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All Journal Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Komunikasi Fisika Indonesia Jurnal Fisika Unand Berkala Ilmiah Pendidikan Fisika JPSE (Journal of Physical Science and Engineering) JURNAL EDUCATION AND DEVELOPMENT International Conference on Mathematics and Science Education of Universitas Pendidikan Indonesia JPPS (Jurnal Penelitian Pendidikan Sains) Jurnal Abdi: Media Pengabdian Kepada Masyarakat Studies in Learning and Teaching Lumbung Inovasi: Jurnal Pengabdian Kepada Masyarakat IJORER : International Journal of Recent Educational Research Jurnal Inovasi Penelitian dan Pengabdian Masyarakat Inovasi Fisika Indonesia (IFI)
M Munasir
Department Of Physics, Faculty Of Mathematics And Natural Science, Universitas Negeri Surabaya, Indonesia
Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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MEMBRAN PVA DENGAN SUBTITUSI NPS DISIAPKAN DENGAN METODE INFERSI: SEBAGAI SEPARATOR BATERAI Li-ION Ajeng Dwi Antika; Munasir MUNASIR
Jurnal Inovasi Fisika Indonesia (IFI) Vol 12 No 1 (2023): Vol 12 No 1
Publisher : Jurusan Fisika FMIPA Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ifi.v12n1.p42-49

Abstract

Abstrak Penelitian ini bertujuan untuk sintesis separator membran PVA dengan subtitusi nano partikel SiO2 (NPS) dengan metode inversi fasa sebagai aplikasi dalam baterai Li-ion. Inversi fasa merupakan metode yang digunakan untuk mengubah polimer cair menjadi lebih padat. Sintesis ini dilakukan dengan cara melarutkan PVA kemudian menambahkan SiO2 dan mencetaknya dalam wadah datar. Morfologi separator membran dapat diamati dengan karakterisasi SEM. Metode inversi fasa dapat membentuk membran separator komposit PVA/SiO2 dalam orde mikro dengan ketebalan terkecil yaitu 38,4 µm. Adanya peningkatan konsentrasi SiO2 dapat menambah ukuran pori membran separator dari 7% - 10% dan dapat meningkatkan sudut kontak dari 59,8° - 65,6°. Resistansi membran separator menurun sebesar 8,2% dan konduktivitas listrik separator semakin meningkat seiring dengan penambahan SiO2 yaitu dari 3,240 x 10-4 S/cm sampai dengan sebesar 3,530 x 10-4 S/cm. Penambahan SiO2 berbanding lurus dengan sifat tahan panas separator membran. Penambahan SiO2 NPS pada larutan PVA dengan menggunakan metode inversi fasa akan meningkatkan porositas, konduktivitas listrik, dan konduktivitas termal sehingga membran dapat di aplikasikan sebagai separator baterai Li-ion. Kata Kunci: PVA, nanopartikel (NPS), inversi fasa, separator. Abstract This research is aimed to synthesize a PVA membrane separator with nanoparticles SiO2 (NPS) substitution using phase inversion method as an application in Li-ion battery. Phase inversion is a method used to convert a liquid polymer into a solid one. This synthesis is carried out by dissolving the PVA, then adding the SiO2, and molding it in a flat container. The morphology of the membrane separator can be observed by SEM characterization. The phase inversion method can form a PVA/SiO2 composite separator membrane in a micro size with the smallest thickness of 38,468 µm. The increase of SiO2 concentration can enlarge the pore size of the separator membrane from 7% - 10% and the contact angle from 59.896° - 65.655°. The separator membrane resistance decreases by 8.2% and the electrical conductivity of the separator increase with the addition of SiO2 from 3.240 x 10-4 S/cm to 3.530 x 10-4 S/cm. The increase of SiO2 is directly proportional to the heat resistance properties of the membrane separator. The addition of SiO2 NPS to the PVA solution using the phase inversion method will raise the porosity, electrical conductivity, and thermal conductivity, so that the membrane can be applied as a Li-ion battery separator. Keywors: PVA, nanoparticles (NPS), phase inversion, separator
A REVIEW : STUDI STRUKTUR, DAN DESAIN DEVAIS PADA SISTEM KOMUNIKASI BAWAH AIR Muhammad Yuanda Risnadiputra; Munasir MUNASIR
Jurnal Inovasi Fisika Indonesia (IFI) Vol 12 No 1 (2023): Vol 12 No 1
Publisher : Jurusan Fisika FMIPA Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ifi.v12n1.p50-62

Abstract

Abstrak Hydrophone merupakan devais yang dapat menangkap gelombang akustik dengan prinsip kerja seperti microphone yang digunakan sebagai alat komunikasi bawah air. Dalam berkomunikasi di bawah air yang memiliki tekanan dan kerapatan yang tinggi dibutuhkan metode khusus menggunakan propagasi gelombang akustik, dikarenakan gelombang akustik mampu merambat dengan jangkauan yang jauh di bawah air dengan karakteristik yang berbeda beda Di dalam artikel ini memberikan gambaran yang komprehensif tentang perangkat komunikasi bawah air dengan mengumpulkan dan mengkategorikan semua informasi tentang perangkat pendengaran bawah air dan parameter yang mempengaruhi fungsi sistem komunikasi bawah air. Gelombang akustik sebagai media komunikasi lebih unggul daripada gelombang elektromagnetik didalam medium fluida dengan jarak jangkauan yang lebih jauh. Gelombang akustik diketahui secara optimal mampu untuk digunakan pada sistem komunikasi bawah air pada rentang frekuensi 20 Hz – 1 kHz. Literatur diringkas sehingga pembaca dapat dengan mudah merujuk ke desain yang cocok untuk skenario aplikasi yang diinginkan. Kata Kunci: hydrophone, karakteristik, akustik, komunikasi bawah air Abstract Hydrophone is devais that can capture acoustic wave with a working principle like a microphone used as an underwater comunication. In communicating underwater which has high pressure and density, special methods are needed using acoustic waves can propagate long distances underwater with another characteristics. In this paper provides a comprehensive overview of underwater communication devais by collected and classified all information about underwater hearing devices and the parameters that affect the functioning of underwater communication systems. Acoustic waves as a communication medium are superior to electromagnetic waves in a fluid medium with a longer range. Acoustic waves are known to be optimally capable of being used in underwater communication systems in the frequency range of 20 Hz – 1 kHz. The literature is summarized so that the reader can easily refer to a design suitable for the desired application scenario. Keywords: Hydrophone, characteristics, acoustic, underwater communication
Green synthesis of TiO2 nanoparticles: dye-sensitized solar cells (DSSC) Applications : a review Mochammad Anang Mustaghfiri; munasir MUNASIR
Jurnal Inovasi Fisika Indonesia (IFI) Vol 12 No 2 (2023): Vol 12 No 2
Publisher : Jurusan Fisika FMIPA Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ifi.v12n2.p10-29

Abstract

Abstrak Peneltian ini bertujuan untuk mempelajaran teknik green synthesis nanopartikel, terkhusus untuk nanopartikel TiO2. Berbagai jenis tenaman bisa digunakan sebagai sumber senyawa ekstraksi (chaping agent, dan deionisasi logam Ti) pada proses sintesis nanopartikel TiO2; diantaranya: daun krokot (Portulaca Oleracea L.), Pisonia grandis (Leechai kottai keerai), jagung (zea mays), Kesumba Keling (bixa orellana), Biji kesumba (Bixa orellana seed), Jeruk (Citrus Limetta), Klabet (Trigonella foenum-graecum), Daun Kelor (Moringa Oleifera Leaf), dan Turi (Sesbania grandiflora). Nanopartikel TiO2 dapat diaplikasi sebagai dye-sensitized solar cells (DSSC). Ukuran nanopartikel TiO2 yang disintesis dengan precursor TPID dan memanfaatkan berbagai ektraksi tanaman telah menghasilkan ukuran 20-100 nm (spherical-like), dan ukuran kristal 9-13 nm (tetragonal crystalline). Sifat dasar dari nanopartikel TiO2 dijelaskna dengan baik (struktur krisal, gugus fungsi dan ukuran artikel), selanjutkan sifat, struktur, dan mekanisme transportasi muatan DSSC- juga dijelaskan dengan rinci. Bagian yang penting pada striuktur DSSC berbasis TiO2 nanopartikel ini adalah fotoanoda, katalis dan elektrolit. DSSC dengan fotoanoda TiO2 nanopartikel memiliki beberapa keunggulan, antara lain: efisiensi tinggi, biaya rendah, kestabilan tinggi, kinerja di bawah cahaya rendah, dan fleksibilitas desain. Hingga pengetahuan saya saat ini, efisiensi DSSC dengan bahan TiO2 telah mencapai lebih dari 14% dalam kondisi laboratorium. Namun, penting untuk dicatat bahwa efisiensi yang dapat diperoleh dalam praktik nyata dapat bervariasi dan masih ada tantangan dalam meningkatkan efisiensi tersebut. Pengembangan dan penelitian terus dilakukan untuk meningkatkan efisiensi DSSC dengan bahan TiO2 serta memperbaiki stabilitas dan biaya produksinya. Demikian halnya untuk DSSC dengan material TiO2-GO; memiliki kinerja tinggi dan sensitivitas yang baik, tetapi DSSC dengan TiO2 nanopartikel lebih teruji dan stabil dalam jangka panjang. Kata Kunci: Green synthesis, Dye-Sensitize solar cells, fotoanoda, Nanopartikel TiO2 Abstract This research aims to study the technique of green synthesis of nanoparticles, especially for TiO2 nanoparticles. Various types of plants can be used as a source of extraction compounds (camping agents, and deionization of Ti metal) in the synthesis of TiO2 nanoparticles, including purslane leaves (Portulaca Oleracea L.), Pisonia grandis (Leechai kottai keerai), corn (Zea mays), Kesumba Keling (bixa orellana), Kesumba seeds (Bixa orellana seed), Oranges (Citrus Limetta), Clabet (Trigonella foenum -graecum), Moringa Leaves (Moringa Oleifera L.), and Turi (Sesbania grandiflora). TiO2 nanoparticles can be applied as dye-sensitized solar cells (DSSC). The size of TiO2 nanoparticles synthesized with TPID precursors and utilizing various plant extractions has resulted in sizes of 20-100 nm (spherical-like) and crystalline sizes of 9-13 nm (tetragonal crystalline). The basic properties of TiO2 nanoparticles are well described (crystal structure, functional groups, and particle size), while the properties, structures, and charge transport mechanisms of DSSC are also described in detail. The essential parts of the DSSC structure based on TiO2 nanoparticles are the photoanode, catalyst, and electrolyte. DSSC with TiO2 nanoparticle photoanode has several advantages, including high efficiency, low cost, high stability, performance under low light, and design flexibility. The efficiency of DSSCs with TiO2 materials has reached over 14% under laboratory conditions. However, it is essential to note that the efficiencies obtained in actual practice may vary, and there are still challenges in increasing these efficiencies. Development and research continue to improve the efficiency of DSSC with TiO2 materials and the stability and production costs. Furthermore, DSSC with TiO2-GO material; has high performance and sound sensitivity, but DSSC with TiO2 nanoparticles is more tested and stable in the long term. Keywords: Green synthesis, Dye-Sensitize solar cells, photoanoda, TiO2 Nanoparticles
Contextual-Based Physics Learning Through Experimental Method to Increase Learning Outcomes in Thermodynamics Material Amalia Hanifah; Elok Sudibyo; Munasir; Mohammad Budiyanto
Studies in Learning and Teaching Vol. 4 No. 2 (2023): August
Publisher : Indonesia Approach Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46627/silet.v4i2.206

Abstract

One of the important benefits of implementing meaningful learning for students is improving better learning outcomes. But in general the ability to manage meaningful learning is still relatively low. This study aimed to describe the effectiveness of contextual-based physics learning through experimental method to increase learning outcomes in thermodynamics material. The effectiveness of contextual-based physics learning through experimental method was described based on the data of increasing students’ learning outcomes. This research employed an one-group pretest-posttest pre-experimental design. The results showed that the contextual-based physics learning through experimental method was able to increase learning outcomes of science education students in thermodynamics material with N-gain of 0.69 in medium category increase. Statistical Wilcoxon test also informed that the learning model can significantly improve learning outcomes of science education students in thermodynamics material. Based on the increase of learning outcomes, it can be concluded the contextual-based physics learning through experimental method was effective.
REVIEW: LAPISAN SUPERHIDROFOBIK BERBASIS SILIKA SEBAGAI APLIKASI SELF-CLEANING Ariyanti Rasiana Putri; Munasir MUNASIR
Jurnal Inovasi Fisika Indonesia (IFI) Vol 12 No 2 (2023): Vol 12 No 2
Publisher : Jurusan Fisika FMIPA Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ifi.v12n2.p66-81

Abstract

Teknologi self-cleaning sangat popular di kalangan para peneliti dan telah banyak diterapkan dalam berbagai aplikasi permukaan. Lapisan self-cleaning dengan sifat superhidrofobik banyak dikembangkan dan diteliti lebih lanjut karena kemampuannya dalam melakukan pembersihan yang sangat baik. Kemampuan self-cleaning lapisan superhidrofobik berbasis silika (SiO2) banyak diteliti. SiO2 dianggap dapat meningkatkan kekasaran suatu permukaan karena memiliki energi permukaaannya yang rendah dan menunjukkan sifat hidrofobik, hidrofilik, dan kestabilan termal. Lapisan superhidrofobik berbasis silika telah disintesis melalui berbagai metode fisik dan kimia. Metode sol-gel menjadi utama dengan ciri khas kemudahannya dalam sintesis melalui pencampuran beberapa material dan lebih hemat biaya. Selain itu, metode sol-gel telah banyak digunakan dalam sintesis material berbasis silika. Pada review ini, membahas mengenai fenomena self-cleaning di alam yang menjadi acuan peneliti, karakteristik lapisan superhidrofobik dalam kemampuan self-cleaning, metode sol-gel dan teknik coating dalam pembuatan lapisan superhidrofobik, dan material silika yang dimodifikasi dengan material lain untuk meningkatkan kemampuan self-cleaning. Kata Kunci: Superhidrofobik; Self-cleaning; Silika; Sol-gel Abstract Self-cleaning technology is very popular among researchers and has been widely applied in various surface applications. Self-cleaning coatings with superhydrophobic properties have been developed and further researched because of their ability to perform excellent cleaning. The self-cleaning ability of silica-based superhydrophobic coatings (SiO2) has been extensively studied. SiO2 considered to be able to increase the roughness of a surface because it has a low surface energy and exhibits hydrophobic, hydrophilic, and thermal stability properties. Silica-based superhydrophobic coatings have been synthesized by various physical and chemical methods. The sol-gel method is the main feature of its ease of synthesis through mixing several materials and is more cost-effective. In addition, the sol-gel method has been widely used in the synthesis of silica-based materials. This review discusses the phenomenon of self-cleaning in nature which is the reference for researchers, the characteristics of the superhydrophobic coating in terms of self-cleaning ability, the sol-gel method and coating techniques in the manufacture of superhydrophobic coatings, and silica material modified with other materials to increase self-cleaning ability. Keywords: Superhydrophobicity; Self-cleaning; Silica; Sol-gel
REVIEW : PERFORMA MEMBRAN KOMPOSIT MENGGUNAKAN ALIRAN DEAD-END FILTRATION Anis As'adah; Munasir MUNASIR
Jurnal Inovasi Fisika Indonesia (IFI) Vol 12 No 2 (2023): Vol 12 No 2
Publisher : Jurusan Fisika FMIPA Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ifi.v12n2.p92-102

Abstract

Teknologi berbasis membran merupakan salah satu teknologi pengolahan air yang paling banyak diminati saat ini karena memiliki beberapa manfaat seperti konsumsi energi yang begitu relatif rendah dan operasi yang sederhana. Membran Graphene Oxide (GO) termasuk membran yang banyak diminati karena memiliki porositas GO yang tinggi serta ukuran pori nano yang baik. Sehingga dilakukan review artikel tentang performa membran komposit menggunakan aliran dead-end filtration. Bahan-bahan lain yang dapat dikompositkan dengan membran GO seperti Ti3C2Tx, Ni, Isophorone Diisocyanate (IPDI), TiO2, Ag, PAM, Attapulgite (ATP) dan SiO2 yang memiliki potensi untuk filtrasi yang berbeda-bedaseperti untuk filtrasi pada pemisahan molekul dan pengolahan air, filtrasi untuk zat pewarna dan lain-lain. Dalam proses filtrasi membran untuk aliran dead-end filtration merupakan aliran yang secara keseluruhannya akan melewati suatu membran serta partikel akan tertahan pada membran tersebut. Pada review artikel ini didapatkan membran komposit GO/SiO2 yang memiliki performa baik dilihat dari nilai fluks tertinggi sebesar 229.15 L/m2.h.bar di antara membran komposit yang lain dan berpotensi untuk filtrasi pencemaran air. Kata Kunci: Membran Komposit, Graphene Oxide, Dead-End Filtration Abstract Membrane-based technology is one of the most popular water treatment technologies today because it has several benefits such as relatively low energy consumption and simple operation. Graphene Oxide (GO) membranes are among the membranes that are in great demand because they have high GO porosity and good nano pore sizes. Therefore, a review of articles on the performance of composite membranes using dead-end filtration was carried out. Other materials that can be composited with GO membranes such as Ti3C2Tx, Ni, Isophorone Diisocyanate (IPDI), TiO2, Ag, PAM, Attapulgite (ATP) and SiO2 which have different potential for filtration such as for filtration in molecular separation and water treatment , filtration for dyes and others. In the membrane filtration process for dead-end filtration flow is a flow that as a whole will pass through a membrane and the particles will be stuck on the membrane. In this review article, it was found that the GO/SiO2 composite membrane had good performance in terms of the highest flux value of 229.15 L/m2.h.bar among other composite membranes and has the potential to filter water pollution. Keywords: Composite Membrane, Graphene Oxide, Dead-End Filtration
REVIEW: GREEN SYNTHESIS NANOPARTIKEL TiO2 SEBAGAI MATERIAL FOTOKATALIS Soffin Harjasa Setiawan Okto; Munasir MUNASIR
Jurnal Inovasi Fisika Indonesia (IFI) Vol 12 No 2 (2023): Vol 12 No 2
Publisher : Jurusan Fisika FMIPA Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Nanopartikel TiO2 merupakan material yang baik digunakan sebagai fotokatalis, hal ini dibuktikan dengan berbagai penelitian yang telah berhasil. Adapun metode sintesis dan ramah lingkungan yaitu dengan metode green synthesis. Metode green synthesis telah menarik perhatian para ilmuan karena proses yang ramah lingkungan dengan pereduksi yang berasal dari ekstrak tanaman. Berbagai macam esktrak tanaman yang telah berhasil disintesis diantaranya daun juwet, kulit lemon, daun Malaka, akar tarum, jeruk nipis, gel aloevera, daun lidah buaya dan daun pagar jarak. Hasil dari nanopartikel tersebut telah sesuai dengan standart TiO2 melalui karakterisasi XRD, FTIR, SEM, TEM dan UV-Vis. Nanopartikel TiO2 yang baik memiliki ukuran partikel yang kecil dan energi band gap yang kecil, dapat diketahui dari SEM, TEM dan UV-Vis. Selain itu, nanopartikel TiO2 yang disintesis menggunakan ekstrak tanaman juga telah berhasil dimanfaatkan sebagai fotokatalis dalam mengurangi konsentrasi polutan diantaranya timbal (Pb), rhodamine B, coralline red, metilen biru, metilen oren, asam pikrat dan treated municipal wastewater (TWW). Dalam proses degradasi nanopartikel TiO2 dapat mencapai hingga 99%, dengan begitu nanopartikel TiO2 yang telah disintesis menggunakan green synthesis berhasil dimanfaatkan dalam aktivitas fotokatalis. Kata Kunci: Nanopartikel TiO2, Green synthesis, Fotokatalis Abstract TiO2 nanoparticles are a good material to use as a photocatalyst, this has been proven by various successful studies. The synthetic and environmentally friendly method is the green synthesis method. The green synthesis method has attracted the attention of scientists because it is an environmentally friendly process with reducing agents derived from plant extracts. Various kinds of plant extracts that have been successfully synthesized include juwet leaves, lemon peel, Malacca leaves, tarum root, lime juice, aloevera gel, aloe vera leaves and jatropha leaves. The results of these nanoparticles comply with the TiO2 standard through XRD, FTIR, SEM, TEM and UV-Visible characterization. TiO2 nanoparticles have a small particle size and a small band gap energy, which can be seen from SEM, TEM and UV-Vis. In addition, TiO2 nanoparticles synthesized using plant extracts have also been successfully used as photocatalysts in reducing pollutant concentrations including lead (Pb), rhodamine B, coralline red, methylene blue, methylene orange, picric acid and treated municipal wastewater (TWW). In the process of degradation of TiO2 nanoparticles it can reach up to 99%, so that TiO2 nanoparticles that have been synthesized using green synthesis are successfully utilized in photocatalyst activities. Keywords: TiO2 Nanoparticles, Green synthesis, Photocatalyst.
A REVIEW : MODIFIKASI DOPING LiFePO4 SEBAGAI KATODA BATERAI Li-ION Hana Nur Hamida; Munasir MUNASIR
Jurnal Inovasi Fisika Indonesia (IFI) Vol 12 No 2 (2023): Vol 12 No 2
Publisher : Jurusan Fisika FMIPA Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ifi.v12n2.p56-65

Abstract

Dalam situasi krisis energi dan perkembangan pesat peralatan elektronik saat ini, baterai lithium ion telah menjadi fokus penelitian sebagai perangkat penyimpanan energi yang memiliki kepadatan energi tinggi, aman, dan terjangkau. Di antara berbagai jenis baterai lithium ion, LiFePO4 telah menarik perhatian dalam bidang baterai dengan kapasitas besar. Keunggulan LiFePO4 antara lain stabilitas yang baik, biaya yang rendah, serta ramah lingkungan. Namun, karena koefisien difusi ion lithium dan konduktivitasnya yang rendah, hal tersebut membatasi kinerja baterai lithium ion. Dalam artikel ini di review pengaruh dari doping logam dan non logam terhadap performa elektrokimia LiFePO4. Setiap ion yang di doping memiliki efek yang berbeda pada bahan katoda LiFePO4. Dari banyak penelitian menjelaskan bahwa jumlah doping yang tepat dapat meningkatkan kinerja bahan katoda LiFePO4 hingga batas tertentu. Setiap ion doping memiliki keunggulan masing-masing sehingga dapat membuktikan bahwa modifikasi doping telah berhasil membantu menstabilkan struktur kristal LiFePO4, dan meningkatkan stabilitas siklusnya serta meningkatkan laju difusi ion lithium dan meningkatkan konduktivitas antarpartikel dalam LiFePO4. Kata Kunci: LiFePO4, Doping, Baterai Lithium Ion Abstract In the current situation of energy crisis and rapid development of electronic equipment, lithium-ion batteries have become the focus of research as energy storage devices that have high energy density, are safe, and affordable. Among the various types of lithium-ion batteries, LiFePO4 has attracted attention in the field of large capacity batteries. The advantages of LiFePO4 include good stability, low cost, and environmental friendliness. However, due to its low lithium-ion diffusion coefficient and conductivity, it limits the performance of lithium-ion batteries. This article reviews the effect of metal and non-metal doping on the electrochemical performance of LiFePO4. Each doped ion has a different effect on the LiFePO4 cathode material. Many studies explain that the right amount of doping can improve the performance of LiFePO4 cathode material to a certain extent. Each doping ion has its own advantages so that it can prove that doping modification has successfully helped stabilize the crystal structure of LiFePO4 and improve its cycle stability as well as increase the diffusion rate of lithium ions and increase the interparticle conductivity in LiFePO4. Keywords: LiFePO4, Doping, Lithium-Ion Battery
Green synthesis of magnetic Fe3O4 nanoparticles (MNPs) using plant extract and Biomedicine Applications: Targeted Anticancer Drug Delivery System Enriko Hendrian; Munasir MUNASIR
Jurnal Inovasi Fisika Indonesia (IFI) Vol 12 No 2 (2023): Vol 12 No 2
Publisher : Jurusan Fisika FMIPA Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ifi.v12n2.p30-46

Abstract

Sekarang, nanosains memberikan dasar ilmiah dan pemahaman tentang sifat dan perilaku materi pada skala nanometer (ukuran » 1-100 nm), adapun nanoteknologi adalah terapan nanosain untuk merancang dan menciptakan struktur serta perangkat baru dengan ukuran nanometer. Bagian penting dari hal tersebut adalah bagaimana membuat material dengan ukuran skala nano (e.i: nanopartikel), berbagai metode sudah dikembangkan baik secara top-down maupun bottom-up. Metode yang paling sederhana adalah secara bottom-up, melakukan fabrikasi dengan menyusun atom demi atom. Untuk metode ini yang paling ramah lingkungan adalah dengan metode green synthesis, dengan memanfaatkan ekstraksi tanaman. Di Indonesia memiliki keunggulan dengan keragaman aneka tanaman yang sangat banyak. Pada studi ini akan ditunjukan bahwa untuk membuat material magnetic, seperti magnetic nanopartikel Fe3O4 (MNPs) yang dapat disintesis dengan mudah dengan menggunakan aneka ektraski tanaman seperti: biji jinten (Syzygium cumini seed), kulit delima (Punica Granatum rind), bunga api-api putih (Avicennia marina flower), akar Chromolaena Odorata, daun Thunbergia Grandiflora, buah Couroupita Guianensis Aubl., dan daun Moringa Oleifera. Pada bidang biomedis khususnya untuk deteksi penyakit, pengiriman obat yang terkontrol. Nanopartikel pengiriman obat harus terutama dapat terdegradasi dan kompatibel dengan organisme. Hasil studi menunjukan MNPs memiliki potensi untuk mengubah secara total metode diagnostik dan terapi klinis, dan ini sangat menarik perhatian. Dan yang terbaru antara lain transfeksi yang ditingkatkan secara magnetik, terapi gen yang dibantu secara magnetik, hipertermia yang diinduksi secara magnetik, dan rekayasa jaringan berdasarkan gaya magnetic. Kata Kunci: Magnetik Nanopartikel (Fe3O4), Green synthesis, DDS, teranostik kanker, terapi genetik Abstract Today, Nanoscience provides the scientific basis and understanding of the properties and behavior of matter at the nanometer scale (size » 1-100 nm). At the same time, nanotechnology is the application of Nanoscience to design and create new structures and devices with nanometer size. An essential part of this is making materials with nanoscale sizes (e.g., nanoparticles); various methods have been developed both top-down and bottom-up. The simplest method is bottom-up, fabricating by assembling atom by atom. For this method, the most environmentally friendly is the green synthesis method, by utilizing plant extraction. Indonesia has an advantage with a vast diversity of various plants. This study will show that to make magnetic materials, such as magnetic nanoparticles Fe3O4 (MNPs), which can be synthesized easily using various plant extracts such as cumin seeds (Syzygium cumin seed), pomegranate peel (Punica Granatum rind), sparks. white (Avicennia marina flower), Chromolaena odorata root, Thunbergia Grandiflora leaf, Couroupita guianensis Aubl. fruit, and Moringa oleifera leaf. In the biomedical field, especially for disease detection, controlled drug delivery. Drug delivery nanoparticles must be primarily degradable and compatible with organisms. The study results show that MNPs have the potential to change clinical diagnostic and therapeutic methods completely, and this is of great interest. Moreover, recent ones include magnetically enhanced transfection, assisted gene therapy, magnetically induced hyperthermia, and magnetic force-based tissue engineering. Keywords: Magnetic Nanoparticles (Fe3O4), Green synthesis, DDS, cancer diagnostics, genetic therapy
Development of Problem-Based Learning Model Physics Learning Tools to Improve Critical Thinking Skills of High School Students Arini Hidayati; Munasir Munasir; Elok Sudibyo
IJORER : International Journal of Recent Educational Research Vol. 5 No. 1 (2024): January
Publisher : Faculty of Teacher Training and Education Muhammadiyah University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46245/ijorer.v5i1.496

Abstract

Objective: Most EFL students need help to develop their speaking abilities. Due to their limited vocabulary, poor grammar, and lack of confidence, they could not practice speaking. Ten students from the English Department joined a study group to address these obstacles. Method: The procedure was carried out online. The teacher created a WhatsApp group as the initial class medium. He added to the vocabulary development and grammar education on the screen. The students studied the material on a video podcast to retell to meet the comprehension criteria, synchronizing their inputs with real life. They then describe a picture to hone their communication skills. They also transcript their story in order to make the spoken and written versions of it coincide. Results: After following the teacher's instructions to build sentences using the lexico-grammar technique, students can identify the grammatical conventions used in podcasts. They can adequately narrate pictures thanks to this type of learning. Their increased confidence fosters mature dialogue. The students' delivery will become more fluid due to the novelty of learning sentence construction through lexico-grammatical techniques and synchronizing it to podcast material. They acquired the ability to apply vocabulary and grammar norms contextually. It was evident from the way they described the images. To fit the needs of their students in the classroom, teachers might change them. It also encourages other researchers to continue their observations.
Co-Authors Ajeng Dwi Antika Amalia Hanifah Anis As'adah Aprillia Nurcahya Putri Arie Realita Arini Hidayati Ariyanti Rasiana Putri Avif Izakul Ikhsan B Jatmiko Binar Kurnia Prahani Budi Jatmiko Budi Jatmiko Budi Jatmiko D Darminto D M T Syahra Dwikoranto Eka Nurul Hidayah Elok Sudibyo Elok Sudibyo Elok Sudibyo Eni Sugiarti Enriko Hendrian Evi Suaebah Fardatul Azkiyah Febryan Andinata Fredina Destyorini H Umah Hainur Rasid A Hana Nur Hamida Ilma Aulia Indah Solichatin Kemas A. Zaini T. Lutfiana Sari Ramadiani M Zainuri Madlazim Madlazim Mochammad Anang Mustaghfiri MOHAMMAD BUDIYANTO Muhammad Yuanda Risnadiputra N R Kapelle Nadi Suprapto Nisa Auliyah Prabowo . ROHIM AMINULLAH FIRDAUS Rosyid Althaf Saiyidah Mahtari Soffin Harjasa Setiawan Okto Suliwa T Triwikantoro Taufanny Putri Pratiwi Utama Alan Deta Vivia Maulida Alfianti Wahono Widodo Wahono Widodo Win Natasa Kharisma Zainal Arifin Imam Supardi