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All Journal Jurnal Periodic Jurusan Kimia UNP Jurnal Penelitian Pendidikan IPA (JPPIPA) Sains Natural: Journal of Biology and Chemistry JURNAL PENDIDIKAN TAMBUSAI FONDATIA EDUKATIF : JURNAL ILMU PENDIDIKAN JURNAL PENDIDIKAN MIPA Pelita Eksakta Jurnal Paedagogy Edunesia : jurnal Ilmiah Pendidikan Edukimia Hydrogen: Jurnal Kependidikan Kimia Jurnal Simki Pedagogia Afeksi: Jurnal Penelitian dan Evaluasi Pendidikan Jurnal Pijar MIPA Prisma Sains: Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram MASALIQ: Jurnal Pendidikan dan Sains International Journal of Educational Research Excellence (IJERE) Duta Pharma Journal Chimica Didactica Acta : Journal of Chemistry and Chemistry Education
Suryani, Okta
Departemen Kimia, Fakultas Matematika Dan Ilmu Pengetahuan Alam Universitas Negeri Padang
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Social Sciences Other

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Sintesis dan Karakterisasi Fotokatalis TiO2/Cu dengan Metode yang Ramah Lingkungan Rahmi, Zulfiyanti; Suryani, Okta
Periodic Vol 13, No 3 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i3.125759

Abstract

Most of the energy consumed comes from non-renewable fossil fuel resources. Therefore, a renewable and environmentally friendly energy source is needed, namely sunlight. One way to utilize sunlight is to store it into chemical compounds, namely hydrogen. The hydrogen used comes from water through a process of decomposing its molecules called water decomposition. Water decomposition uses sunlight and semiconductor photocatalysts, such as TiO2. In this study, TiO2 has been synthesized and doped with Cu metal to reduce the band gap with a simple and environmentally friendly method. XRD characterization to determine the structure and particle size. TiO2 has an anatase crystal structure with an average particle size of 28.28 nm. TiO2 has an energy band gap of 3.2 eV. Then doping with Cu metal with varying concentrations of Cu metal soluble (0.1 M san 0.5 M) causes the energy band gap to decrease to 3.17 and 3.07 eV. Metal doping is proven to reduce the band gap energy of TiO2 photocatalysts. In addition, metal doping also helps widen the light absorption area by TiO2, but the absorption is still in the UV region.
Development of Teaching Materials to Support Merdeka Curriculum Learning on Salt Hydrolysis for Phase F Senior High School Mardhiyatul Khairat; Mawardi; Okta Suryani; Reza Akmar
International Journal of Educational Research Excellence (IJERE) Vol. 3 No. 2 (2024): July-December
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/ijere.v3i2.1139

Abstract

This aims of this research is to develop teaching materials that incorporate multiple representations of chemistry concepts, especially on the salt hydrolysis topic, to support the Merdeka Curriculum and improve students' mental models in the F phase of high school. Educational Research Development (EDR) is the method chosen, using Plomp’s development model. The subject are three UNP chemistry lecturers, two chemistry teachers and nine SMAN 8 Padang students. The developed teaching material have been validated with a construct validity value of 0.89 which is classified as valid and. Then it has also been tested for practicality with a score of 96% from teachers and 94% from students, this shows that the development teaching materials are very practical, which indicates their ease of use and application in an educational environment. It concludes, that the developed teaching materials are for the topic of salt hydrolysis, which incorporate a comprehensive range of chemical representations proven to be valid and highly practical can effectively assist students in building mental models and improving their understanding of chemical concepts and support the goals of the Merdeka Curriculum in fostering deeper student understanding.
Efektivitas Sistem Pembelajaran Flipped Classroom Berbasis Inkuiri Terbimbing Menggunakan Aplikasi Discord Pada Materi Termokimia Amien, Nurkholishah; Mawardi, Mawardi; Suryani, Okta
Edukimia Vol 6, No 3 (2024): Edukimia - Vol. 06, Issue 03
Publisher : Universitas Negeri Padang

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

Abstract

Penelitian ini bertujuan untuk mengetahui efektivitas pembelajaran flipped class  berbasis inkuiri terbimbing menggunakan aplikasi Discord tentang materi termokimia terhadap hasil belajar peserta didik. Penelitian ini adalah lanjutan dari penelitian pengembangan model Plomp dengan jenis penelitian quasi eksperimen berdesain Non-equivalent control group design . Penelitian ini melibatkan dua kelas sampel yaitu eksperimen dan kontrol dengan jumlah sampel 60 orang yang dipilih melalui teknik purposive sampling . Berdasarkan hasil penelitian yang diperoleh, kelas eksperimen memiliki nilai N-gain 0,70 dan kelas kontrol memiliki nilai N-gain 0,54. Sesuai dengan nilai N-gain, esektivitas kelas eksperimen termasuk dalam kategori tinggi, dan kelas kontrol termasuk dalam kategori sedang. Hipotesis selanjutnya diuji menggunakan uji-t, diperoleh nilai t-hitung sebesar 0,73 dan t-tabel sebesar 2,048. Hasil analisis data menunjukkan bahwa pembelajaran dengan flipped class berbasis inkuiri terbimbing dengan memanfaatkan aplikasi Discord untuk materi termokimia efektif meningkatkan hasil belajar siswa.
Efektivitas Bahan Ajar konten Materi Penerapan Hukum Dasar Kimia terhadap Hasil Belajar Siswa Fase E Furqon, Muhammad; Mawardi, Mawardi; Suryani, Okta
EDUKATIF : JURNAL ILMU PENDIDIKAN Vol 6, No 5 (2024)
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/edukatif.v6i5.7475

Abstract

Tersedianya bahan ajar konten materi pada materi penerapan hukum dasar kimia sudah valid dan Praktis namun belum di uji efektivitasnya terhadap siswa kelas fase E SMA/MA. Tujuan Penelitian ini untuk menganalisis tingkat efektivitas bahan ajar konten materi penerapan hukum dasar kimia terhadap hasil belajar peserta didik. Metode penelitian ini menggunakan kuasi eksperimen dan menggunakan model Non-equivalent Control Group Design. populasi penelitian yaitu seluruh siswa kelas Fase E SMAN 8 Padang tahun ajaran 2023/2024 dengan pengambilan sampel menggunaakn Purposive sampling. Instrumen yang digunakan yaitu berupa tes hasil belajar siswa dalam bentuk soal pilihan ganda yang yang memiliki realibilitas, validitas, indeks kesukaran dan daya pembeda dengan kriteria soal yang baik. Analisis data dilakukan dengan uji N-Gain dan didapati hasil n-gain sebesar 0,75 menyatakan bahwa bahan ajar konten materi penerapan hukum dasar kimia efektif digunakan dalam meningkatakna hasil belajar peserta didik. Uji hipotesis diperoleh dengan menggunakan uji independent sample t-test  yaitu dengan nilai Thitung sebesar 3,947 > 1,667 Ttabel. Analisis data tersebut menyatakan bahwa Ho ditolak dan Hi diterima. Kesimpulannya bahwa bahan ajar konten materi pada materi penerapan hukum dasar kimia Efektif dalam meningkatkan Hasil belajar siswa Fase E SMA/MA.
Sintesis dan Karakterisasi Fotokatalis TiO2/Cu Menggunakan Lampu UV Syawal, M Ichlas; Suryani, Okta
MASALIQ Vol 3 No 6 (2023): NOVEMBER
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v3i6.2088

Abstract

Most of the energy consumed comes from non-renewable fossil fuel resources. Burning fossil fuels has been found to be a major cause of environmental pollution and greenhouse gas emissions, making it the most common energy source. Therefore, renewable and environmentally friendly energy resources are needed, namely sunlight. One way to utilize sunlight is to store it into hydrogen compounds. Hydrogen comes from water through a process of breaking down its molecules which is called water decomposition. Water decomposition uses sunlight and a semiconductor photocatalyst, such as TiO2. In this research, TiO2 doped with Cu metal has been synthesized using UV lamp irradiation. TiO2 has been successfully synthesized. XRD characterization to determine the structure of TiO2. TiO2 has an anatase crystal structure. Then XRF characterization is done to see the percentage of Cu that has been successfully doped. When exposed to a UV lamp for 1 hour, 0.347% Cu was successfully doped. When exposed to a UV lamp for 5 hours, 1.28% Cu was successfully doped.
Interaction of Coumarin, Daphnetin, Fraxetin from Natural Materials with Carbanoic anhydrase II in Inhibiting Glaucoma Rismi Verawati; Fajri Ikhsan; Okta Suryani
Sains Natural: Journal of Biology and Chemistry Vol. 14 No. 4 (2024): Sains Natural
Publisher : Universitas Nusa Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31938/jsn.v14i4.735

Abstract

This article explores the interaction of Coumarin compounds and their derivatives obtained from natural extracts with Carbonic anhydrase II protein in inhibiting Glaucoma computationally. This research method includes modeling using software such as Pymol, Pyrx, Protein Plus, and Lipinski Rule of Five. The results showed Binding Affinity and RMSD of Coumarin, Daphnetin, and Fraxetin compounds with Carbonic anhydrase II with strong interaction. Protein Plus analysis was used to visualize the interaction that occurred between the compound and the Carbonic anhydrase II protein, in addition to the Lipinski Rule of Five test results, which showed results that were in accordance with the rules and met the drug criteria. These results indicate that Coumarin, Daphnetin, and Fraxetin compounds as Carbonic anhydrase II inhibitors have the potential to inhibit glaucoma. Daphnetin compound is the best inhibitor seen from the Binding Affinity value of -6.9, -5.8, and -5.5, as well as the results of Daphnetin's Lipinski Rule of Five data. However, further research is needed to validate this computational study.
Molecular Docking of Brassicasterol Inhibition from Green Mustard Plant (Brassica Chinensis Var. Parachinensis) with Cytochrome P450 in Treating Chagas Disease Suryani, Okta; Fahira, Ade Irma
Sains Natural: Journal of Biology and Chemistry Vol. 14 No. 4 (2024): Sains Natural
Publisher : Universitas Nusa Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31938/jsn.v14i4.736

Abstract

The aim of this study was to evaluate the potential of brassicasterol found in mustard greens as a cytochrome P450 inhibitor using a computational approach. The research method involved the use of various software such as PyRx, Pymol, Protein Plus, Protein Data Bank (PDB), and Lipinski's rule to analyze the molecular interactions and physicochemical characteristics of brassicasterol. The analysis results showed that brassicasterol has a significant affinity for cytochrome P450, with binding affinity values reaching -8.5, -8.4, and -8.2. RMSD analysis also showed that the brassicasterol-cytochrome P450 complex showed good stability, with RMSD values ranging from 0 to 2.832. The use of Protein Plus software illustrated the interaction between brassicasterol and cytochrome P450, while Lipinski analysis showed that brassicasterol meets the expected physicochemical criteria to be a chagas disease drug candidate, such as a molecular mass of 353, having one hydrogen bond donor and acceptor, and having a log P of 2.2 and a molar reactivity of 99.08. These findings provide new insights into therapeutic development in treating chagas disease using mustard green extract and brassicasterol as a cytochrome P450 inhibitor, but further study is needed to verify the potential of brassicasterol as a chagas disease drug.
Betalains as Natural Dyes and Applications Fauziah, Tasya; Suryani, Okta
Sains Natural: Journal of Biology and Chemistry Vol. 14 No. 4 (2024): Sains Natural
Publisher : Universitas Nusa Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31938/jsn.v14i4.737

Abstract

Betalains are natural pigments that include betacyanin and betaxanthin, found in plants such as beets and cacti. In the food industry, betalains are used as natural colorants due to their color stability and health benefits, including antioxidant and anti-inflammatory properties that support the prevention of degenerative diseases. With increasing demand for natural ingredients, betalains are also being promoted in the cosmetics and health product industries. In the healthy food sector, new extraction techniques like microwave-assisted extraction and aqueous two-phase technology have improved the purification efficiency and quality of betalain pigments. In cosmetics, betalains are utilized as anti-aging and anti-inflammatory components, with innovative approaches like biopolymer encapsulation to enhance product stability. Geographical trends show significant interest in betalain use in natural cosmetics and healthy foods in Europe and Asia, while research in Latin America focuses on its potential as a supplement and food colorant. In renewable energy technology, betalains act as photosensitizers in dye-sensitized solar cells (DSSCs), though their stability still requires optimization, such as through co-sensitization with other pigments. These innovations suggest that betalains hold considerable potential in the food, cosmetics, and energy industries, making them a versatile and globally relevant natural material.
EFFECTIVENESS OF A PROBLEM-BASED LEARNING MODULE ON SALT HYDROLYSIS IN IMPROVING STUDENT LEARNING OUTCOMES Batu Bara, Humairoh Azhari; Mawardi, Mawardi; Akmar, Reza; Ulianas, Alizar; Suryani, Okta; Aini, Faiza Qurrata; Mulyanti, Mulyanti
Chimica Didactica Acta Vol 12, No 2: December 2024
Publisher : FKIP USK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jcd.v12i2.41972

Abstract

This study aimed to analyze the effectiveness of the problem-based learning module on students' learning outcomes at SMAN 1 Bukittinggi. This study employed Plomp's development model. The research applies a quasi-experimental type with a non-equivalent control group design. The population includes phase F students of Class XI of SMAN 1 Bukittinggi who are studying chemistry in the 2023/2024 academic year as many as six classes. The sample was taken with a purposive sampling technique, and the selected classes XI F9 and XI F10. The test instrument was 20 multiple-choice questions. The data obtained were analyzed using the n-gain and hypothesis testing with the Mann-Whitney test. The results of data analysis obtained the n-gain value of the experimental class and control class, respectively, namely 0.74 with a high category and 0.58 with a medium category. As for hypothesis testing, the calculation of Asymps. Sig 0.05, then the learning outcomes of experimental class students are higher than those of the control class. The results showed that problem-based learning module learning on is effective in improving student learning outcomes at SMAN 1 Bukittingi.
DEVELOPMENT OF TEACHING MATERIALS TO SUPPORT THE MERDEKA CURRICULUM IN REDOX REACTIONS AND ELECTROCHEMISTRY FOR PHASE F SENIOR HIGH SCHOOL Jasmine, Nalisha; Mawardi, Mawardi; Suryani, Okta; Akmar, Reza
Chimica Didactica Acta Vol 12, No 2: December 2024
Publisher : FKIP USK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jcd.v12i2.41981

Abstract

AbstractThe research aims to evaluate the development of teaching materials that incorporate multiple representations of chemical concepts, specifically on the topic of redox and electrochemistry, to support the Merdeka Curriculum and enhance students mental models in Phase F of senior high school. Educational Design Research (EDR) was the chosen methodology and the study involved three university chemistry lecturers, two chemistry teachers, and nine students. Data collection was carried out using validity and practicality questionnaires. The results revealed that the average construct validity score of 0.87 and the average content validity score of 0,86 classified the materials as valid. Furthermore, the practicality assessment showed that this teaching material received a high practicality score, with a score of 97% from teachers and 92% from students indicating ease of application in learning. In conclusion, the teaching materials developed for redox and electrochemistry lessons, incorporating multiple chemical representations, were proven to be both valid and highly practical, supporting the goals of the Merdeka Curriculum in fostering deeper student understanding.
Co-Authors Ahadul Putra Aini, Faiza Qurrata Aini, Faizah Qurrata Aini, Syamsi Akhmad, Ashta Varan Akila, Alya Akmar, Reza Amien, Nurkholishah Anastasya, Wulanda Andromeda Annisa, Ananda Suci Aprilia Susanti, Aprilia Arief Muttaqiin Arrum Permata S. Tuti Aviva Alamanda Batu Bara, Humairoh Azhari Benti Etika, Sri Berlianda, Anisa Chatarina Umbul Wahyuni Dafista, Nara Damiyanti, Damiyanti Darussalam, Rahni Della Rosalynna Stiadi Desy Kurniawati Edi Nasra Ezra Delfianza Fahira, Ade Irma Fajri Ikhsan Fallahu Fauzan Fauziah, Tasya Feliska Amanda Fitri Amelia Fitria Ningsih, Rahmadhani Hakim, Lara Azzahra Hamsil, Fatia Hapzi Ali Harahap, Aprilia Silviani Hardeli Hardeli Hardeli Haris Prayudha Setyawan Herianto Ifan Rivaldo Ilham Fauzi Imelda, Fitria Indang Dewata Insani, Munadia Intan Nofita Sari, Intan Nofita Irma Fahira, Ade Iryani Iryani Ismail, Irfan Ananda Iswendi iswendi Jasmine, Nalisha Jayawarsa, A.A. Ketut Katonnia, Eka Putri Khairani Novia Kiki Amelia, Kiki Lailatul Rahmi Lazaro Sofian Arif Lendarwati, Yana Maharani, Mellysa Maida, Margarita Claudya Mardhiyatul Khairat Mawardi Mawardi Mawardi Mawardi Mawardi Mawardi Mawardi Mawardi Mawardi Mawardi Mawardi Mawardi Mawardi Mawardi Mawardi Mawardi Melati Alicia Firdaus Miftahul Khair Mulyanti Mulyanti Naibaho, Sriwahyuni Nizar, Umar Kalmar Nofri Yuhelman Nurisa, Sindya Rahmatul Pangestuti, Annisa Dewi Parbuntari, Hesty Pebrianti, Puji Putra, Ahadul Putri, Wiandi Melati Raden Mohamad Herdian Bhakti Rahimmah, Nur Rahmad, Nafisah Yulia Rahmadhani, Melia Rahmi Fadila Rahmi, Zulfiyanti Ramadhan, Muhammad Arvito Ramdhani, Amelia Restu Ananda Reza Akmar Reza Akmar Riga Riga Riga, Riga Rismi Verawati Rizal, Putri Nadia Romy Dwipa Yamesa Away Ruri Januarita Santia, Andini Sari, Melinda Sari, Trisna Kumala Sembiring, Rinawati Sofyan, Mega Sonnya Camelia Suci Sukmawati Syawal, M Ichlas Ulianas, Alizar Velly, Aglin Verawati, Rismi Vika Aumi Yana Lendarwati Yeni, Isra Yerimadesi Yulinda Sari Z, Martias Zahran, Jihan Fadhilah Zonalia Fitriza