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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 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

Author-ID : 264427

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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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

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

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

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.

Preparation of TiO2Â¬ Bamboo Leaves Ash Composite as Photocatalyst for Dye Photodegradation Prihatiningsih, Prihatiningsih; Pertiwi, Lita Dewi; Fatimah, Is
INDONESIAN JOURNAL OF CHEMICAL RESEARCH VOLUME 2, ISSUE 1-2, 2017
Publisher : Chemistry Department, Universitas Islam Indonesia

Textile waste containing dye can generate environmental problems especially for human. Therefore some techniques are developed to overcome the impact of toxic contaminant from dyes residue, one of these is the photocatalysis technique. The photocatalysis mechanism TiO2 is a popular photocatalyst and in order to improve its activity the composite formation with a some solid support are attempted. The development of TiO2 composite with a sustainable support source; bamboo leaves was conducted. The composite was prepared by dispersing titanium isopropoxide into bamboo leaves ash (BLA) followed by calcination process. Hysicochemical characterization of the photocatalyst was performed by using XRD, gas sorption analyzer and SEM-EDX analysis. By the characterization it is found that BLA contains silica in highest percentage and furthermore TiO2 in the mixed anatase and rutile phases were formed the composite.

Modifikasi Zeolit Dengan Tembaga (Cu) Dan Uji Sifat Katalitiknya Pada Reaksi Esterifikasi Arjek, Orien Claudia Handayani; Fatimah, Is
INDONESIAN JOURNAL OF CHEMICAL RESEARCH VOLUME 2, ISSUE 1-2, 2017
Publisher : Chemistry Department, Universitas Islam Indonesia

Zeolite modification with Cu has been conducted. Material modification is done by impregnating Cu through a zeolite powder reflux process with CuSO4.5H2O solution so that theoretical Cu concentration is 5% followed by oxidation and reduction of solids. Material characterization was performed by x-ray diffraction analysis (XRD), Fourier Transform Infra-Red (FTIR) and acidity testing of Cu/Zeolite catalyst.The results showed that the crystallinity level of Cu/Zeolite did not change significantly when compared with natural zeolite. Changes occur at the intensity of the resulting peak, as at the peak of 2Î¸ 27.826 Âº which is the mordenite phase in Cu-zeolite has a peak intensity of 1360, while at zeolite with peak of 2Î¸ 27,760 Âº with the same phase meliki the smaller intensity of 1048. Testing the acidity of the catalyst was carried out by adsorbing pyridine into the catalyst, then calculating the adsorbed pyridine level, in the zeolite samples of pyridine adsorbed by 0.003 g / g while in the Cu-zeolite sample of 1.0574 g / g. The result of analysis with FTIR to show acidity level is seen in the range of wave number between 1450-1495 cm-1, from zeolite catalyst with wave number 1491,17 cm-1 peak intensity (% T) equal to 6,53, while at Cu-zeolite with wave number 1468.05 cm-1 peak intensity (% T) of 10.99. Testing of catalytic properties of Cu-zeolite catalyst on esterification reaction was done by taking acetic acid with concentration of 0.05 mol and methanol with concentration of 0.1 mol, then added 0.2 gram of catalyst, then reflux process for 1 hour. The results of reflux in the form of methyl esters were then analyzed by gas chromatography to see the retention time and the area of the resulting area. The use of Cu-zeolite catalysts yielding ester is indicated by the appearance of the ester peak.

Metal Oxide and Metal Complex Immobilization Modified Smectite Clay For Green Catalysis and Photo-Catalysis Applications: A Mini Review Fatimah, Is
INDONESIAN JOURNAL OF CHEMICAL RESEARCH VOLUME 2, ISSUE 1-2, 2017
Publisher : Chemistry Department, Universitas Islam Indonesia

Clay minerals are promising modifiable material for catalysis application. Fit to green chemistry issue, green catalysis based on clay minerals modification has been designed in our research group. Metal oxide and metal complexes modification onto natural and synthetic smectite clay via pillarization and intercalation processes and its application as green catalyst have been investigated.Â This paper presents the study on preparation of Ni, Zr and PtÂ insertion on smectite clay structure for green conversion of citronellal to menthol via catalytic hydrogen transfer mechanism and Ru-complex modified smectite clay as novel photocatalysis application.Â Effect of clay structure modification was also studied in order to investigate theÂ relationship between physicochemical characteristic change of material modifications and its catalytic/photo-catalytic activity. Some interesting phenomena related to the interaction of metal-clay support for their performance toward reaction kinetics and mechanism are reviewed, with emphasis on the evolution of surface properties and some factors affecting catalytic/photo-catalytic activity

Preparasi Fe(III)-Montmorillonit Sebagai Katalis Pada Fotooksidasi Metilen Biru Yunani, Yuyun; Fatimah, Is; Riyanto, Riyanto
INDONESIAN JOURNAL OF CHEMICAL RESEARCH VOLUME 1, ISSUE 1, 2014
Publisher : Chemistry Department, Universitas Islam Indonesia

Preparasi Fe(III)-montmorilloit dan aplikasinya pada fotodegradasi metilen biru dengan sinar UV telah dilakukan. Preparasi Fe(III)-montmorillonit dilakukan dengan tahapan pembuatan larutan agen pemilar, interkalasi, dan kalsinasi. Karakterisasi material dilakukan menggunakan XRD, dan SAA melalui persamaan BET. Degradasi metilen biru dilakukan menggunakan beberapa metode yaitu adsorpsi, fotokatalis, fotolisis, fotooksidasi dan oksidasi. Hasil karakterisasi menggunakan XRD menunjukkan Fe(III)-montmorillonit mempunyai basal spacing 12,23 Å, luas permukaan spesifik 110,513 m2g-1, volume total pori 158,8x10-3 cm3g-1 dan rerata jejari pori 28,74075 Å. Hasil degradasi metien biru dianalisis dengan menggunakan Spektrofotometer UV-Vis. Metode degradasi yang paling optimal adalah uji fotooksidasi pada pH 10, selama 180 menit, penyinaran di bawah sinar UVB (λ .. nm) dengan menggunakan 0,1 g Fe(III)-montmorillonit untuk setiap 500 mL MB 10-4 M dan peroksida (H2O2 50%) sebanyak 0,025 mL dapat menurunkan kadar metilen biru sebesar 92,564 %.

ANALYSIS OF PHOSPHORUS AND POTASSIUM LEVELS IN ORGANIC FERTILIZER IN THE INTEGRATED LABORATORY OF JOMBANG DISTRICT AGRICULTURE OFFICE Zakiyah, Zahrah Nur; Rahmawati, Cicik; Fatimah, Is
INDONESIAN JOURNAL OF CHEMICAL RESEARCH VOLUME 3, ISSUE 2, 2018
Publisher : Chemistry Department, Universitas Islam Indonesia

Quantitative analysis in the integrated laboratory of Jombang District Agriculture Office has been done on two samples of organic fertilizer with phosphorus and potassium parameters, considering these two elements are macronutrients which have an important role in the growth and development of plants. Determination of phosphorus level has been done by ascorbic acid method using double beam UV-Visible spectrophotometer, while determination of potassium level has been done by flame photometric method. There are 2 samples code of organic fertilizer, 13/F/16 and 14/F/16. From the result of analysis, the phosphorus level as P2O5 in 13/F/16 sample is 0.275%, while in the 14/F/16 sample is 0.29%. The potassium level as K2O in 13/F/16 sample is 2.58%, while in the 14/F/16 sample is 2.67%. These results meet the requirements for compost quality standards based on SNI 19-7030-2004, because they exceed the minimum requirements, which are 0.10% for phosphorus level and 0.20% for potassium level.

Sintesis TiO2/Abu Vulkanik sebagai Fotokatalis untuk Pengolahan Limbah Cair Batik pada Skala Rumah Tangga Nurillahi, Rico; Fatimah, Is; Halimah, Dwi Nur; Apriliani, Gusti Dwi
INDONESIAN JOURNAL OF CHEMICAL RESEARCH Volume 5, ISSUE 1, 2020
Publisher : Chemistry Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcr.vol5.iss1.art5

Fotokatalis TiO2/abu vulkanik telah dibuat pada penelitian ini untuk pengolahan limbah batik. Bahan fotokatalis dibuat dengan mendispersi prekursor titanium ke dalam suspensi serbuk abu vulkanik dilanjutkan dengan pengeringan dan kalsinasi. Identifikasi material dilakukan dengan instrumen X-Ray Diffraction (XRD), X-Ray Fluorescene (XRF), Fourier Transform InfraRed (FT-IR) dan spektrofotometer UV-Visible. Material katalis diaplikasikan pada fotooksidasi air limbah batik pada variasi perlakuan penambahan H2O2 dan kalium peroksodisulfat sebagai oksidan. Dalam penelitian ini, dari berbagai perlakuan diperoleh hasil bahwa penambahan kalium peroksodisulfat memiliki efektivitas yang lebih baik dibandingkan dengan penggunaan H2O2. TiO2 /abu vulkanik merupakan material potensial yang dapat dikembangkan untuk pengolahan air limbah batik dengan mekanisme photooksidasi dengan biaya yang murah dan ramah lingkungan.

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

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 Doong, Ruey-an 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 Rizky, Indah Tri 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 Sheikh Mohd Ghazali, Sheikh Ahmad Izaddin Solekah 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 Wijayanti, Hiroko Kawaii Won-Chun Oh Yanti , Ika Yunani, Yuyun Yusak Maryunianta Yuyun Yunani Nurkholifah Zakiyah, Zahrah Nur Zeeshan Ahmad

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