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All Journal POSITRON JURNAL FISIKA CHEMPUBLISH JOURNAL Jurnal Fisika FLUX Science and Technology Indonesia Jurnal Pengabdian UntukMu NegeRI Jurnal Penelitian Sains INDONESIAN JOURNAL OF APPLIED PHYSICS Indonesian Journal of Chemistry IJEMS (Indonesian Journal of Environmental Management and Sustainability) Riau Journal of Empowerment Jurnal Pengabdian Masyarakat Teknik Bulletin of Chemical Reaction Engineering & Catalysis
Idha Royani
Jurusan Fisika, Universitas Sriwijaya
Religion Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences

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Recycle Performance of Heterogeneous Catalyst Metal Oxides-Based Layered Double Hydroxide for Oxidative Desulfurization Process of 4-methyldibenzothiophene Ahmad, Nur; Rohmatullaili, Rohmatullaili; Hanifah, Yulizah; Wibiyan, Sahrul; Amri, Amri; Wijaya, Alfan; Mardiyanto, Mardiyanto; Mohadi, Risfidian; Royani, Idha; Lesbani, Aldes
Bulletin of Chemical Reaction Engineering & Catalysis 2023: BCREC Volume 18 Issue 4 Year 2023 (December 2023)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20034

Abstract

The desulfurization of oil must be resolved as soon as possible due to a variety of issues, including environmental contamination and protection regulations. It was believed that oxidative desulfurization (ODS) was the most promising method. In this research, metal oxide-based layered double hydroxides (TiO2@Ni-Al and ZnO@Ni-Al) were effectively synthesized for the ODS of 4-methyldibenzothiophene (4-MDBT). TiO2@Ni-Al and ZnO@Ni-Al exhibited superior catalytic performance and high recycling capacity, achieving a 99% removal rate after five reactions in 30 min. The heterogeneous catalyst TiO2@Ni-Al/ZnO@Ni-Al is easy to separate and recover from a reaction system. Increased temperature facilitates the transformation of 4-MDBT into 4-MDBTO2. The influence of H2O2's rapid decomposition rate, which can inhibit oxidation reactions, reduces the catalytic activity as the temperature increases. 4-MDBT Sulphur removal on TiO2@Ni-Al and ZnO@Ni-Al is 99.48 and 99.51%, respectively. TiO2@Ni-Al and ZnO@Ni-Al have great potential for use in the industry based on these results. Copyright © 2023 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 
Serat Nanofiber Berbasis PVA dengan Penambahan Ekstrak Daun Pepaya dan Sirsak: Tinjauan Sistematis dalam Perspektif Nanoteknologi Sastia, Eti Desti; Johan, Akmal; Royani, Idha
Jurnal Penelitian Sains Vol 27, No 3 (2025)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56064/jps.v27i3.1231

Abstract

Penelitian ini merupakan tinjauan sistematis terhadap pengembangan serat nanofiber berbasis Poly(vinyl) alcohol (PVA) yang dimodifikasi dengan ekstrak daun pepaya (Carica papaya L.) dan daun sirsak (Annona muricata L.) sebagai inovasi bahan aktif untuk perawatan jerawat (acne treatment). Dengan menggunakan metode Systematic Literature Review (SLR), studi ini mengidentifikasi artikel-artikel ilmiah dari berbagai basis data (Google Scholar, PubMed, ScienceDirect, dan lainnya) dalam rentang 10 tahun terakhir yang membahas sintesis nanofiber, teknologi elektrospinning, dan aplikasi bahan alam sebagai antibakteri. Hasil kajian menunjukkan bahwa daun pepaya dan daun sirsak mengandung senyawa aktif seperti flavonoid, saponin, dan acetogenin yang bersifat anti-inflamasi, antioksidan, serta antibakteri. Kombinasi kedua ekstrak tersebut dalam matriks PVA melalui teknik elektrospinning berpotensi menghasilkan serat nanofiber dengan karakteristik fisikokimia yang mendukung efektivitas terapi topikal jerawat. Studi ini merekomendasikan kelanjutan pengembangan formulasi dan pengujian in vitro/in vivo guna memastikan keamanan dan efikasi nanofiber berbahan dasar alami untuk aplikasi dermatologis berkelanjutan.
Pemasangan Modem Detektor Gempa Ekonomis di Krui, Kabupaten Pesisir Barat, Provinsi Lampung berbasis Sensor Getaran Khairul Saleh; Menik Ariani; Fitri Suryani Arsyad; Erry Koriyanti; Fiber Monado; Idha Royani; Assaidah, Assaidah
Jurnal Pengabdian UntukMu NegeRI Vol. 10 No. 1 (2026): Pengabdian Untuk Mu negeRI
Publisher : LPPM UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jpumri.v10i1.11202

Abstract

Telah diimplementasikan modem detektor gempa di kota Krui, Kabupaten Pesisir Barat, Provinsi Lampung pada Bulan Agustus 2025. Wilayah yang berada di area ring of fire ini memerlukan banyak sensor untuk mendeteksi gempa agar mitigasi bencana dapat dilaksanakan dengan baik. Oleh karena itu, riset yang dilaksanakan oleh Jurusan Fisika dengan output berupa modem detektor gempa berbasis sensor getaran dipasang di dua lokasi berbeda di Krui. Penentuan lokasi tersebut ditetapkan oleh tim bekerja sama dengan Badan Penanggulangan Bencana Daerah (BPBD) Krui setelah melakukan serangkaian survey di beberapa tempat. Setelah lokasi pemasangan diputuskan, BPBD mengerahkan komunitas nelayan di sekitar Pantai Walur dan warga di Kampung Sunda untuk membantu tim dalam proses instalasi modem dan sel surya yang menjadi sumber tenaga listrik mandiri bagi detektor. Data yang diukur oleh sensor pada modem dapat dipantau melalui website yang telah dibangun oleh tim riset Jurusan Fisika, FMIPA, Universitas Sriwijaya.
Bioactive Metabolites in Melaleuca leucadendra Leaves Extract: Phytochemical Profilling and GC-MS Characterization for Antimicrobial Relevance Atina, Atina; Royani, Idha; Indah, Assa; Setiabudidaya, Dedi; Miksusanti, Miksusanti; Arsyad, Fitri Suryani
Chempublish Journal Vol. 10 No. 1 (2026): Chempublish Journal (January - June)
Publisher : Department of Chemistry, Faculty of Science and Technology Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/chp.v10i1.49078

Abstract

The global escalation of antimicrobial resistance (AMR) necessitates the exploration of natural sources of antibacterial agents. This study examined the ethanolic leaf extract of Melaleuca leucadendra's phytochemical composition, chemical profile, and antibacterial activity. Alkaloids, flavonoids, saponins, tannins, phenolics, terpenoids, and steroids were all detected by phytochemical screening. The quantitative total flavonoid content (TFC) of the extract was 17.78 mg QE/g, while the total phenolic content (TPC) was 292.43 mg GAE/g extract. Gas Chromatography–Mass Spectrometry (GC–MS) analysis identified oxygenated esters (18.86%), oxygenated aromatics (15.22%), phenolic derivatives (13.44%), and flavonoids (12.86%), methoxylated aromatics and terpenoids (5.34%), phytol, and fatty acid derivatives. These metabolite classes are widely reported to exert antibacterial effects through multiple mechanisms such as membrane disruption, enzyme inactivation, and inhibition of nucleic acid synthesis. Antibacterial testing against Staphylococcus aureus and Escherichia coli using the agar diffusion method showed a concentration-dependent response, with the highest activity at 80% extract (15.67 ± 0.58 mm and 15.33 ± 0.58 mm inhibition zones, respectively). Raman spectroscopy confirmed the interaction between polymer molecules and secondary metabolite compounds in the extract, thereby potentially enhancing antibacterial properties. These findings highlight that the antibacterial activity of M. leucadendra is mediated by the synergistic interplay of phenolics, flavonoids, methoxylated aromatics, terpenoids, and fatty acids. The findings offer compelling proof that M. leucadendra is a viable natural source for the creation of antibacterial compounds that will lessen antibiotic resistance.
Evaluation of Ferric Ion Adsorption On The Surface Imprinting Adsorbent Alfikro, Ihsan; Jorena, Jorena; Koriyanti, Erry; Satya, Octavianus Cakra; Monado, Fiber; Royani, Idha
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 14, No 2 (2024): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v14i2.89893

Abstract

Rapidity in technological aspects encourages industrial sector to utilize and apply the latest technology to accelerate and optimize production in its field. Thus, waste from industry polluting various aspects of environment, such as water, gives rise to environmental impacts. Heavy metals, including iron, are one of the most common and dangerous pollutants often found in water environments. Therefore, consideration of methods for heavy metal separation from water becomes important. The adsorption method has been used for separating heavy metals because of its simplicity, thus effectively cuts energy consumption and costs in process. However, heavy metal characteristics in water can vary depending on the element. Consequently, understanding the heavy metal characteristics in water is important, hence capable of formulate appropriate and effective adsorption systems. This study, Fe(III)-IIPs was applied to adsorb and separate iron from water through repeated adsorption with parameter improvements. The pH parameter plays an important role, with ion competition happens at pH <2 and the formation of iron hydroxide species at pH >4.5, which results in adsorption inhibition. The modeling of adsorption kinetic equation was found that the adsorption system carries chemisorption characteristics, with adsorption capacity of 11.15 mg/g and reaction rate constant of 19 min-1.
Analisis Proses Ekstraksi pada Nano Kafein Terhadap Konsentrasi Kafein Terbuang pada Molecularly Imprinted Polymer (MIP) dan Rongga Tercipta Rahmayani, Jumatul; Maimuna, Maimuna; Bangun, Jorena; Royani, Idha
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 11, No 1 (2021): April
Publisher : Department of Physics, Sebelas Maret University

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

Abstract

Molecularly Imprinted Polymer (MIP) nano kafein telah disintesis menggunakan metode cooling-heating dengan melibatkan kafein sebagai analit, Methacrylic Acid (MAA) sebagai monomer fungsional, Benzoil Peroksida (BPO) sebagai inisiator reaksi, Ethylene Glycol Dimethacrylac (EDMA) sebagai pengikat silang dan kloroform sebagai pelarut. Nano kafein diperoleh dengan mengubah kafein ke dalam skala nanopartikel menggunakan alat High Energy Milling (HEM) jenis Shaker Mill-miller 1st selama 10 menit. Ukuran partikel berdasarkan karakterisasi menggunakan XRD adalah sebesar 19,029 nm. Kemudian polimer nano kafein digerus dan dilakukan pencucian berulang untuk membuang kafein dari polimer. Berdasarkan hasil FTIR, terjadi penurunan konsentrasi pada gugus penciri kafein yakni N-H, C-N, dan C=O yang dapat dilihat berdasarkan kenaikan persen transmitansi akibat proses pencucian pada MIP nano kafein. Untuk mengetahui jumlah dan ukuran rongga sebagai tempat yang ditinggalkan kafein maka MIP di karakterisasi menggunakan SEM dan dianalisis menggunakan software porediz dengan bantuan Matlab. Hasilnya menunjukkan bahwa jumlah dan ukuran rongga yang terbentuk pada MIP nano kafein sebanyak 233 rongga pada ukuran rongga di bawah 100 nm. Artinya penggunaan analit dalam skala nano dapat memberikan peluang tercipta rongga yang lebih banyak. Jumlah dan ukuran rongga yang tercipta ini akan meningkatkan selektivitas MIP dalam aplikasinya.
Co-Authors Akmal Johan Aldes Lebani, Aldes Aldes Lesbani Alfahidayah, Arini Alfikro, Ihsan Alfikro, Muhammad Ihsan Almafie, Muhammad Rama Amiruddin Supu Amri Amri Arsyad, Fitri Suryani Assa'idah Assaidah, Assaidah Atina Atina, Atina Berliani, Berliani Dedi Setiabudidaya Edianta, Jaya Enda Susanty Erry Koriyanti Erry Koriyanti Fiber Monado Fitri Suryani Arsyad Fitria, Silfiyana Frinsyah Virgo Hadir Kaban Hadir Kaban, Hadir Hanifah, Yulizah Hesti Dwi Kartika Hijrah, Muhammad Husin, Sadam Ida Sriyanti Indah, Assa Irma Suryani Ismail, Dede Ridwan Jorena Jorena Jorena, Jorena Karvenia, Icha Aulia Khairul Saleh Liasari, Beta Riana Maimuna Maimuna, Maimuna Maimunah Mardiyanto Mardiyanto Megawanto, Dian Menik Ariani Miksusanti Miksusanti Nur Ahmad, Nur Nur’aini, Siti Octavianus Cakra S. Octavianus Cakra Satya Rahmayani, Jumatul Rakhmawati Farma Risfidian Mohadi Rohmatullaili, Rohmatullaili Rudy Setiawan Sari, Putri Ailana Yhawita Sastia, Eti Desti Soerya, Balada Su'ud, Zaki Supardi Supardi Weanda, W Wibiyan, Sahrul Wijaya, Alfan Yulinar Adnan Zahara, Zaqiya Artha Zaki Su&#039;ud