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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
Religion Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences

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ZnO-Porous Clay Heterostructure from Saponite as Green Catalyst for Citronellal Cyclization Dwiarso Rubiyanto; Nurcahyo Iman Prakoso; Imam Sahroni; Rico Nurillahi; Is Fatimah
Bulletin of Chemical Reaction Engineering & Catalysis 2020: BCREC Volume 15 Issue 1 Year 2020 (April 2020)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.15.1.5800.137-145

Abstract

Green conversion in organic synthesis is one of the interesting and important topics in green chemistry. The use of heterogeneous catalysis instead of homogeneous catalysis offers some advantages, such as easy separation and reusability. In this research, a heterogeneous acid catalyst was prepared from saponite by immobilizing ZnO in the form of a pillared clay (Zn/PILS) and Zn supported on porous clay heterostructure (Zn/PCH). Physicochemical studies involving X-ray diffraction measurement, surface analysis using a gas sorption analyzer, and surface acidity measurement were performed. Results indicated that the increasing surface acidity and the high specific surface area of the material were the relevant physicochemical properties that facilitate environment-friendly citronellal cyclization. The higher values for both parameters in Zn/PCH than in Zn/PILS linearly affected citronellal conversion and the selectivity for isopulegol production. Zn/PCH demonstrated a conversion rate of 98.9% for a 3-hour reaction and a selectivity of 100% for isopulegol production, and it exhibited reusability properties. Copyright © 2020 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). 
Nickel/Biochar from Palm Leaves Waste as Selective Catalyst for Producing Green Diesel by Hydrodeoxygenation of Vegetable Oil Galih Dwiki Ramanda; Allwar Allwar; Muchammad Tamyiz; Is Fatimah; Ruey-an Doong
Bulletin of Chemical Reaction Engineering & Catalysis 2023: BCREC Volume 18 Issue 1 Year 2023 (April 2023)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.16403

Abstract

The objective of this research was to prepare low-cost catalyst for green diesel conversion from vegetable oil. The catalyst of nickel-dispersed biochar (Ni/BC) was prepared by direct pyrolysis of nickel precursor with palm leaves waste under N2 stream at 500 °C. The obtained catalyst was examined by using x-ray diffraction, scanning electron microscope-energy dispersive x-ray, transmission electron microscopy, gas sorption analysis, FTIR and surface acidity examination. The catalytic activity testing was performed on rice bran oil hydrodeoxygenation at varied temperature and time of reaction. Based on analyses, the results showed the successful preparation of Ni/BC with the characteristic of single nickel nanoparticles decorated on surface. The increasing specific surface area of material was conclusively remarked the surface area enhancement by nickel dispersion along with the increased surface acidity, suggesting that the material can be applied for acid catalysis applications. The Ni/BC exhibited excellent catalytic conversion of rice bran oil with the high selectivity toward diesel fraction with 85.3% yield and 92.6% selectivity. 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). 
Photocatalytic Efficiency of Titanium Dioxide for Dyes and Heavy Metals Removal from Wastewater Suresh Sagadevan; Is Fatimah; Titus Chinedu Egbosiuba; Solhe F. Alshahateet; J. Anita Lett; Getu Kassegn Weldegebrieal; Minh-Vien Le; Mohd Rafie Johan
Bulletin of Chemical Reaction Engineering & Catalysis 2022: BCREC Volume 17 Issue 2 Year 2022 (June 2022)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.17.2.13948.430-450

Abstract

The hazardous toxicity of dye materials, even in low concentrations, harms ecological systems. It releases a large number of contaminants into the water, resulting as waste water. Dyes prevent the process of photosynthesis by obstructing light passage, lowers the oxygen levels dissolved in the water. Also, a good number of the dyes and heavy metals are carcinogenic and mutagenic to human beings. Heterogeneous photocatalysis is a promising technology for removing organic, inorganic, and microbial pollutants from water and wastewater. It is preferable to other conventional wastewater treatment approaches due to its benefit, such as low cost, environmental friendliness, ability to proceed at ambient temperature and pressure conditions, and to completely degrade pollutants into environmentally safe products with suitable measures. The titanium oxide (TiO2) is one of the most promising material that has gained enormous importance in the field of energy and environmental applications. The unique physicochemical properties of TiO2 make it one of the best candidates among existing photocatalysts. This review provides an overview of strategies employed to augment its catalytic performance as well as the impact of different operational parameters on the removal proficiency of various organic and inorganic pollutants in water and wastewater treatment. Copyright © 2022 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).
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.
Ni-Biochar dari limbah daun kelapa sawit sebagai fotokatalis berbiaya rendah untuk degradasi zat warna metil jingga Dwiki Ramanda, Galih; Is Fatimah; Suresh Sagadevan; Mohd Rafie Bin Johan
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 6, ISSUE 2, October 2025
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/EKSAKTA.vol6.iss2.art1

Abstract

Photocatalytic oxidation is one of the methods in the advanced oxidation process. The method depends on several factors to be effective in application, one of these is the cost-effectivity and sustainability. The intent of this research work is to synthesize low-cost photocatalyst by using waste: palm leaves ash. Lignocellulosic as a structural compenent found in palm leaves has the potential for various applications, including as a catalyst for wastewater treatment. The Ni-biochar (Ni-BC) photocatalyst based on nickel nanoparticles was synthesized by using palm leaves under pyrolysis method on two varied Ni content; 10 and 30 % wt to get Ni10-BC and Ni30-BC, respectively. Various characterization techniques consist of XRD, SEM, and VSM were conducted, meanwhile the photocatalytic activity for methyl orange photodegradation was employed as activity testing. Results showed that single nickel nanoparticles dispersed on biochar structure are appeared by XRD measurement. The porous structure of materials is derived, with the magnetism of 9.64 emu/g and 3.87 emu/g for Ni content of 10 and 30 % wt., respectively. The fabricated Ni-BC samples showed excellent photoactivity represented by 74.73 and 50.01% of the degradation efficency towards methyl orange by Ni10-BC and Ni30-BC, respectively. A persuasive mechanism and kinetics are well presented. The kinetics study expressed the fitness of the degradation that follow pseudo-first order kinetics.
Co-Authors - Rostyanesia Ahmad Said Ahmad Said Allwar Allwar Amri Yahya Arif Hidayat Arjek, Orien Claudia Handayani Arvina Adil Asep Abdurrahman Bambang Hernawan Nugroho Cicik Rahmawati Daud, Muhammad Fauzi Dian Riyanti Diyan Kurniaysih Dwi Gusti Apriliani Dwi Nur Halimah 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 Gusti Dwi Apriliani Habibi Hidayat Habibi Hidayat, Habibi 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 Lita Dewi Pertiwi 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 Noor Fitri Nur Afisa Lintang Mutiara Nur Aishah Mohd Noor Nur Nadia Dzulkifli Nurain Adam Nurcahyo Iman Prakoso Nurlaela, Nunung Oh, Won-Chun Orien Claudia Handayani Arjek Pertiwi, Lita Dewi Prihatiningsih Prihatiningsih Prihatiningsih Prihatiningsih, Prihatiningsih Putwi Widya Citradewi Rahmania Audita Rahmawati, Cicik Revita Anggreyani Rico Nurillahi Rico Nurillahi Rico Nurillahi Rifaldi Lutfi Fahmi Riyanto Riyanto 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 Yuyun Yunani Nurkholifah Zahrah Nur Zakiyah Zakiyah, Zahrah Nur