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All Journal Jurnal Penelitian Saintek Jurnal Ilmiah Farmasi EKSAKTA: Journal of Sciences and Data Analysis Jurnal Teknoin Reaktor Jurnal Ilmu Dasar Jurnal technoscientia Bulletin of Chemical Reaction Engineering & Catalysis Journal of Mathematical and Fundamental Sciences Science and Technology Indonesia Indonesian Journal of Chemistry Molekul: Jurnal Ilmiah Kimia ASEAN Journal of Chemical Engineering Acta Chimica Asiana JURNAL TEKNOLOGI TECHNOSCIENTIA IJCR (Indonesian Journal of Chemical Research) Jurnal Pijar MIPA Khazanah: Jurnal Mahasiswa Bulletin of Chemical Reaction Engineering & Catalysis
Is Fatimah
Department Of Chemistry, Islamic University Of Indonesia, Jl. Kaliurang KM 14.5 Sleman Yogyakarta 55584
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Journal : Science and Technology Indonesia

 1 
Heterogeneous Catalytic Conversion of Citronellal into Isopulegol and Menthol: Literature Review Amri Yahya; Dwiarso Rubiyanto; Is Fatimah
Science and Technology Indonesia Vol. 6 No. 3 (2021): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1535.031 KB) | DOI: 10.26554/sti.2021.6.3.166-180

Abstract

The conversion of citronellal into isopulegol is a key route in the production of a number of important chemicals. In the perspective of green conversion, the use of a heterogeneous catalyst is superior due to its ease in separation and reusability, so it facilitates a highly economical conversion. In this review, we examine the use of some transition metals in cyclization reactions, which are suitable for citronellal conversion into isopulegol, and consider the potential progress in clay-based catalysts. The structure of clay which potentially provides the porosity by modification and supporting active metal is proposed to be the low-cost catalyst for the conversion. As other mechanism by porous materials-supported metal, the porosity of clay support contributes to conduct thesurface adsorption mechanism and the Broensted acid supply, meanwhile the metal acts as active site for cyclization, and in the one-pot conversion into menthol, as both cyclization and hydrogenation.
Biogenic Silica Extracted from Salacca Leaves Ash for The Adsorption of Salycilic Acid Is Fatimah; Faiha Ulfiyani Zaenuri; Lolita Narulita Doewandono; Amri Yahya; Putwi Widya Citradewi; Suresh Sagadevan; Won-Chun Oh
Science and Technology Indonesia Vol. 6 No. 4 (2021): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2021.6.4.296-302

Abstract

Extraction of biogenic silica from Salacca leaves ash and it’s utilization as adsorbent for salycilic acid has been successfully conducted. The caustic extraction by Refluxing the ash in NaOH followed by slow titration using acid produced the silica gel, and in order to evaluate the physicochemical character for adsorption purpose, the sintering of the dried gel was varied at 300, 400 and 500oC. Instrumental analysis of x-ray diffraction, scanning electron microscopy, gas sorption analysis, and Fourier transform infrared spectroscopy were employed. The kinetics of the salycilic acid adsorption was investigated in a batch adsorption system and the quantitative analysis was based on UV–Vis spectrometry. The results showed that the produced silica exhibited adsorption capability for salycilic acid in an aqueous solution. At varied sintering temperature, the highest adsorption capacity and affinity was achieved by temperature of 500oC, and the adsorption kinetics obeyed the Langmuir isotherm. The varied pH for adsorption suggested neutral pH is the most feasible compared to the acidic and basic conditions.
Thermal Conversion of Coral Waste and its Utilization as Low-Cost Catalyst for Biodiesel Production Widianingsih, Suci; Yanti , Ika; Kamari, Azlan; Fatimah, Is
Science and Technology Indonesia Vol. 9 No. 4 (2024): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.4.866-875

Abstract

This study investigates the thermal conversion of waste coral and its utilization as a heterogeneous catalyst for biodiesel production from soybean oil. In this work, waste coral is calcined at varied temperatures of 800, 900, and 1000°C, and the effect of the calcination temperature on the physicochemical character of the solid is evaluated through Fourier-transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and basicity measurement. The results show that the higher temperature facilitates the conversion of CaCO3 of the aragonite and calcite phases in raw waste coral into CaO, achieving a complete conversion at the temperature of 1000°C. Thermal conversion influences the increased surface basicity of the solid, which is associated with the higher activity for biodiesel production. Further studies on the obtained CaO as a catalyst demonstrate the catalyst dosage and the methanol-to-oil ratio as significant factors for fatty acid methyl ester production. The highest yield of 98.7% is achieved after a 3 hours reaction with 8 wt.% catalyst dosage and 9:1 methanol-to-oil ratio. The catalyst exhibits stability with an insignificantly decreased yield until the fifth usage cycle. The optimum conditions and reusability features of the calcined waste coral suggest that waste coral is a favorable CaO catalyst source for biodiesel production.
Clitoria ternatea Flower Extract Mediated Synthesis of Ni-Doped Hydroxyapatite as Photocatalyst, Antibacterial, and Drug Delivery Agent for Anticancer Drug Fatimah, Is; Nurlaela, Nunung; Fauziyyah, Anas Zahra; Sagadevan, Suresh; Hidayat, Habibi; Haneef, Mehru Nisha Muhamad; Daud, Muhammad Fauzi; Kamari, Azlan; Oh, Won-Chun
Science and Technology Indonesia Vol. 10 No. 2 (2025): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.2.360-373

Abstract

In the present study, green synthesis of nickel-doped hydroxyapatite using Clitoria ternatea flower extract, and activity testing as photocatalyst, antibacterial agent and drug delivery agent were performed. Synthesis was conducted by hydrothermal treatment of co-precipitated precursors previously mediated with the extract. As drug delivery agent, immobilization of 5-fluorouracil (5FU) onto the prepared sample was performed by spray-drying method. Physicochemical characterization techniques of X-ray diffraction, UV-Visible Diffuse Reflectance Spectrophotometry, transmission electron microscopy, Raman and Fourier-Transform Infra-red spectroscopy were performed to determine the structural and surface properties of material. Photocatalytic activity evaluation for tetracycline removal showed that material has capability to reduce concentration by photocatalytic degradation and photocatalytic oxidation. The degradation efficiency of material was 83.78%. The prepared material exhibited a significant activity against Staphylococcus aureus and Escherichia coli bacteria. The material also expressed the potency as a drug-delivery agent of 5-fluorouracil as shown by the reduced CT26 cell viability of more than 85% during 48 hours.
Research Trends in Green Synthesis of CeO2 Nanoparticles: A Bibliometric Review Prihatiningsih, Elisa; Sagadevan, Suresh; Nisha, Mehru; Fatimah, Is
Science and Technology Indonesia Vol. 11 No. 1 (2026): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2026.11.1.182-195

Abstract

This bibliometric review examines the trends in green synthesis of CeO2 nanoparticles (NPs) emphasizing significant contributions and emerging research applications. Through an analysis of keywords, co-authorship networks, countries, and affiliation metworks, findings highlight that green synthesis of nanoparticles, applications of CeO2 as antibacterial agent, catalyst, and photocatalysts are the most used keywords reflecting strong interests. By evaluating the citation metrics within last 20 years, it could be concluded that green synthesis of CeO2 still have position to fill the map on the use of nanoparticles for various applications, mainly in medicine and environmental engineering. Stronger collaborations to explore linkages for creating new route as greener and sustainable method as innovation are still required.
Co-Authors - Rostyanesia Ahmad Said Ahmad Said Allwar Allwar Amri Yahya Apriliani, Gusti Dwi Arif Hidayat Arjek, Orien Claudia Handayani Arvina Adil Asep Abdurrahman Bambang Hernawan Nugroho Daud, Muhammad Fauzi Dian Riyanti Diyan Kurniaysih Dwi Gusti Apriliani Dwi Nur Halimah Dwiarso Rubianto Dwiarso Rubiyanto Dwiki Ramanda, Galih Eko Sugiharto Endah Desiyani Faiha Ulfiyani Zaenuri Farah Liyana Bohari Fauziyyah, Anas Zahra Fethi Kooli Fitriani Harjati Galih Dwiki Ramanda Getu Kassegn Weldegebrieal Getu Kassegn Weldegebrieal Habibi Hidayat Habibi Hidayat, Habibi Halimah, Dwi Nur Haneef, Mehru Nisha Muhamad Hasna' Azizah Azzahra' Hikmah Fatmawati Imam Sahroni Iqmal Tahir Iwan Sumarlan J. Anita Lett Jaka Nugraha Kamalia Kamalia Kamari, Azlan Karna Wijaya Karna Wijaya Karna Wijaya Karna Wijaya Karna Wijaya Karna Wijaya Karna Wijaya Khoirul Himmi Setyawan Khoirunisa khoirunisa Lolita Narulita Doewandono Minh-Vien Le Mohd Rafie Bin Johan Mohd Rafie Johan Muchammad Tamyiz Nanda Candra Kartika Narsito Narsito Narsito Narsito Narsito Nindia Mega Kurniawati Nisha, Mehru Noor Fitri Nur Afisa Lintang Mutiara Nur Aishah Mohd Noor Nur Nadia Dzulkifli Nurain Adam Nurcahyo Iman Prakoso Nurillahi, Rico Nurlaela, Nunung Oh, Won-Chun Pertiwi, Lita Dewi Prihatiningsih Prihatiningsih, Prihatiningsih Prihatiningsih, Elisa Putwi Widya Citradewi Rahmania Audita Rahmawati, Cicik Revita Anggreyani Rico Nurillahi Rico Nurillahi Rifaldi Lutfi Fahmi Riyanto Riyanto Rohini Pujiarti Rudatiningsih Rudatiningsih Ruey-an Doong Sagadevan, Suresh Septian Perwira Yudha Sesy Ardyanti Shaobin Wang Sheikh Ahmad Izaddin Sheikh Mohd Ghazali Sheikh Ahmad Izaddin Sheikh Mohd Ghazali Solhe F. Alshahateet Sri Sudiono Suci Widianingsih Suresh Sagadevan Suresh Sagadevan Suresh Sagadevan Suresh Sagadevan Suresh Sagadevan Tesha Yuliarni Thorikul Huda Titus Chinedu Egbosiuba Torikul Huda Totok Eka Suharto Tuty Alawiyah Uun Ayil Hasanah Uun Ayyil Hasanah Wellyana Puspitasari Won-Chun Oh Yanti , Ika Yunani, Yuyun Yusak Maryunianta Yuyun Yunani Nurkholifah Zakiyah, Zahrah Nur