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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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CONTROLLING FACTOR IN ALUMINA PILLARED SAPONITE AND ALUMINA PILLARED MONTMORILLONITE SYNTHESIS Is Fatimah; Narsito Narsito; Karna Wijaya
Indonesian Journal of Chemistry Vol 9, No 1 (2009)
Publisher : Universitas Gadjah Mada

The effect of synthesis parameters to the physical properties of pillared saponite and pillared montmorillonite was examined. Mol ratio of Al to clay mass in the range 1.0 - 5.0 and two different calcination methods; conventional calcination and microwave irradiation method are evaluated as controlling factors to evolution of basal spacing d001 , surface acidity, specific surface area, pore distribution and catalytic activity in phenol hydroxylation reaction. XRD, FTIR, and N2-adsorption/desorption analysis were used to characterize the materials. Results showed that pillarization produced higher basal spacing d001 and surface acidity and crystalinity of materials in all Al/clay ratio and in both of the calcination methods. In general, Al to clay mass ratio and calcination method remarkably influence to the basal spacing d001, surface acidity and material crystallinity, but the effect of these factors to catalyst activity in phenol hydroxylation depends on nature of clay. It is concluded that the activity as catalyst is affected by the presence of ionic species and surface acidity in the minerals.

PHOTODEGRADATION OF ALIZARIN S DYE USING TiO2-ZEOLITE AND UV RADIATION Karna Wijaya; Eko Sugiharto; Is Fatimah; Iqmal Tahir; Rudatiningsih Rudatiningsih
Indonesian Journal of Chemistry Vol 6, No 1 (2006)
Publisher : Universitas Gadjah Mada

An investigation of Alizarin S photodegradation using TiO2-zeolite and UV radiation was performed. TiO2-zeolite was prepared by dispersing oligocations of titanium into suspension of zeolite. The suspension was stirred and then filtered to separate the solid phase from the filtrate. the solid phase was calcined by microwave oven at 800 Watt for 5 minutes to convert the oligocations into its oxide forms. The calcined product and unmodified zeolite were characterized using x-ray diffractometry, FT-IR spectrophotometry, X-ray fluorescence and gas sorption analysis methods to determine their physicochemical properties. Photocatalytic activity of TiO2-zeolite was tested on Alizarin S solution using following method: 50 mg of zeolite was dispersed into 25 mL of 10-4 M Alizarin S. The dispersion was irradiated using 365 nm UV light at room temperature on various irradiation times, i.e. 10, 20, 30, 40 and 60 minutes. At certain irradiation time, the dispersion was filtered and the filtrate was then analyzed its concentration using UV-Vis spectrophotometry method. Characterization results exhibited that the formation of TiO2 on internal as well as external surfaces of zeolite could not be detected with x-ray diffractometry and FT-IR spectrophotometry, however determination of titanium using x-ray fluorescence analysis on the calcined product showed that the concentration of titanium was much higher than zeolite (0.22% on zeolite and 12.08% on TiO2-zeolite). Gas sorption analysis result indicated that the the calcination resulted in the increase of specific surface area (16,31 m2/g on zeolite and 100.96 m2/g on TiO2-zeolite) as well as total pore volume of calcined product (13.34 mL/Å/g on zeolite and 57.54 mL/Å/g on TiO2-zeolite). The result of photocatalytic activitiy study showed that ca 99 % of Alizarin S was degraded by TiO2-zeolite after UV irradiation for 60 min.

TITANIUM OXIDE DISPERSED ON NATURAL ZEOLITE (TiO2/ZEOLITE) AND ITS APPLICATION FOR CONGO RED PHOTODEGRADATION Is Fatimah; Eko Sugiharto; Karna Wijaya; Iqmal Tahir; Kamalia Kamalia
Indonesian Journal of Chemistry Vol 6, No 1 (2006)
Publisher : Universitas Gadjah Mada

The utilization of TiO2 dispersed on natural zeolite (TiO2/Zeolite) for degradation of Congo Red photocatlytically has been performed. The TiO2/Zeolite was prepared by mechanically mixing of 100 g of natural zeolite, which it has been heated at 400oC, with TiO2 powder, the final weight ratio of the mixture was 5% (w/w). The mixture was then calcined at 400oC for 6 hours. The calcined product was characterized using x-ray diffractometry, x-ray fluorescence analysis and gas sorption analysis methods to determine its physicochemical properties changes caused by mixing and calcination. Investigation of Congo Red photodegradation using TiO2/Zeolite was carried out by mixing 25 mL 10-4 M solution of Congo Red with 25 mg of TiO2/Zeolite and irradiating the suspention with UV-light of 350 nm for 10, 20, 30, 40, 50 and 60 minutes, respectively. The characterization results showed that dispertion of TiO2 on zeolite resulted in the increasing of titanium concentration on TiO2/Zeolite. The concentration of Ti on natural zeolite was found to be 0.15%(w/w), meanwhile on TiO2/Zeolite was 2.29% (w/w). From X-ray diffractometry analysis result no information was found that TiO2 was dipersed on natural zeolite. It was caused by overlapping of the reflections of zeolite with reflections of TiO2. On the otherhand, the gas sorption analysis result exhibited that the dispersion of TiO2 on zeolite resulted in the decreasing of total pore volume as well as specific surface area of the natural zeolite. The specific surface areas of natural zeolite and TiO2/Zeolite were 21.98 and 16.74 m2/g, respectively, meanwhile the total pore volumes of natural zeolite and TiO2/Zeolite were 20.10x10-3 and 13.47x10-3 mL/g. The simple kinetic of photodegradation of Congo Red exhibited that the rate of degradation followed a first order kinetic and the reaction rate constant was 0.0017 minute-1.

PEMANFAATAN BUNGA LANTANA CAMARA UNGU SEBAGAI BIOREDUKTOR DALAM SINTESIS NANOPARTIKEL PERAK SEBAGAI DAN ANTIOKSIDAN Is Fatimah; Nindia Mega Kurniawati; - Rostyanesia; Arvina Adil; Revita Anggreyani
Khazanah: Jurnal Mahasiswa Vol. 8 No. 1: Januari 2016
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/5812016

Teknologi Nano merupakan bentuk aplikasi dari bidang nanomaterial yang memiliki banyak manfaat bagi kehidupan. Metode Fisika dan Kimia telah banyak digunakan untuk menghasilkan Nanopartikel logam dan oksida logam. Namun produksi Nanopartikel tersebut menggunakan agen pereduksi yang berbahaya dan sangat reaktif contohnya adalah NaBH4 atau reduktor lainya. Pada Paper ini telah dilakukan penelitian dari Bunga Lantana camara ungusebagai bioreduktor aktif pada sintesis nanopartikel Perak. Bioreduktor dari ekstrak Bunga Lantana camara ungu didapat dari proses maserasi Bunga Lantana camara ungu yang dikeringkan. Ekstrak tersebut kemudian dicampur dengan larutan 1 mN AgNO3 kemudian dilakukan proses refluk. Pembentukan Nanopartikel lalu diukur menggunakan Spektrofotometri UV-Vis danScanning Electrone Microscope (SEM). Larutan Nanopartikel kemudian diuji aktivitas antibakterinya menggunakan Bakteri E.coli dan aktivitas antioksidanya menggunakan Metode DPPH. Penelitian ini memberikan perspektif baru penggunaan ekstrk Bunga Lantana camara ungu sebagai reagen yang baik pada sintesis nanopartikel. Hasil dari penelitian ini membuktikan bahwa ekstrak Bunga Lantana camara ungu dapat digunakan sebagai bioreduktor pada sintesis Nanopartikel perak. Nanoparikel yang didapatkan memiliki ukuran antara 20-100nm. Nanopartikel dapat digunakan sebagai agen antibakterial serta antioksidan. Aktivitas antioksidan dari nanopartikel ini adalah 98.18% .

PENGOLAHAN LIMBAH BATIK CAIR MENGGUNAKAN FOTOKATALIS TiO2-ABU VULKANIK DESA WUKIRSARI YOGYAKARTA Rico Nurillahi; Dwi Nur Halimah; Dwi Gusti Apriliani; Is Fatimah
Khazanah: Jurnal Mahasiswa Vol. 10 No. 2: Oktober 2018
Publisher : Universitas Islam Indonesia

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Penelitian ini bertujuan untuk mendapatkan katalis TiO2 yang termodifikasi abu vulkanik sehingga memiliki serapan energi yang lebih aktif untuk mendegradasi senyawa polutan dalam limbah batik cair. Metode yang dikembangkan dalam penelitian ini menggunakan oksidasi fotokatalitik dengan biaya rendah dan bahan baku yang melimpah dialam. Bahan fotokatalis dibuat dengan cara mendispersikan prekusor titanum kedalam suspensi material abu vulkanik yang diikuti dengan pengeringan dan kalsinasi. Karakterisasi material dilakukan dengan menggunakan XRay Diffraction (XRD), X-Ray Fluorescene (XRF), Fourier Transform InfraRed (FT-IR), dan Spektrofotmetri UV-Visible. Materi tersebut diaplikasikan pada fotooksidasi air limbah batik dengan variasi penambahan H2O2 sebagai oksidator. Dari penelitian yang telah dilakukan dapat disimpulkan bahwa dengan penambahan oksidator H2O2 memiliki efektifitas yang lebih baik dalam metode pengolahan limbah ini sehingga TiO2 ttermodifikasi abu vulkanik merupakan bahan potensial yang dapat digunakan dalam pengolahan limbah batik.

PHYSICOCHEMICAL AND PHOTOCATALYTIC STUDIES OF ZNO-SUPPORTED INDONESIAN KAOLINITE (ZNO/KAOLINITE) FOR METHYL VIOLET PHOTOOXIDATION Endah Desiyani; Fitriani Harjati; Is Fatimah
Khazanah: Jurnal Mahasiswa Vol. 11 No. 2: Oktober 2019
Publisher : Universitas Islam Indonesia

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Research on preparation of photocatalyst of zno-supported onto Indonesian Kaolinite (ZnO/Kaolinite) and photocatalytic activity for methyl violet photo-oxidation has been conducted. ZnO/Kaolinite was prepared by impregnation method utilizing zinc acetate as ZnO precursor and kaolinite sample obtained from Bangka Belitung province, Indonesia. Physicochemical study of the photocatalyst was conducted by x-ray diffraction (XRD), gas sorption analyzer and scanning electrone microscope-energy dispersive x-ray (SEMEDX). Furthermore, photocatalytic activity of the material was evaluated in a bacth photooxidation system of methyl violet degradation. The results showed that prepared ZnO/Kaolinite demonstrated superior and high stable photocatalytic performance in the photooxidation system. The prepared ZnO/Kaolinite is a simply prepared, recovered and reused for advance application of dye wastewater treatment.

PENENTUAN NILAI AMINE STRENGTH DAN H2S LOADING SERTA HUBUNGANNYA DENGAN pH SAMPEL LEAN AMINE DI LABORATORIUM PT. SIPL Rifaldi Lutfi Fahmi; Is Fatimah; Asep Abdurrahman
Khazanah: Jurnal Mahasiswa Vol. 12 No. 1: Oktober 2020
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/khazanah.vol12.iss1.art12

Bahan bakar merupakan hal essensial dalam kehidupan manusia, salah satunya adalah gas alam. Gas alam banyak digunakan di berbagai sektor seperti industri, transportasi, dan rumah tangga. Gas alam diperoleh dari proses pengeboran minyak bumi. Gas alam yang diperoleh masih mengandung gas-gas seperti karbondioksida CO2) dan hidrogen sulfida (H2S) yang perlu dihilangkan karena dapat menyebabkan korosi pipa bahkan memicu terjadinya ledakan. Hasil pembakarannya pun berbahaya bagi manusia dan lingkungan. Oleh karena itu penelitian ini dilakukan untuk menentukan nilai amine strength dan H2S loading serta hubungannya dengan pH sampel lean amine. Analisis nilai amine strength dan H2S loading dilakukan terhadap sampel lean amine, yaitu sampel yang berasal dari amine regenerator system di PT. SIPL. Penentuan nilai amine strength dilakukan dengan titrasi asidimetri dengan larutan HCl 0,5 N sebagai titran menggunakan autotitrator. Penentuan nilai H2S loading dilakukan dengan titrasi iodometri menggunakan larutan standar Na2S2O3 0,1 N. Nilai amine strength yang diperoleh dari hasil analisis selama 7 hari adalah 33,620%; 34,295%; 34,725%; 35,139%; 35,583%; 36,464% dan 36,683%. Nilai H2S loading yang diperoleh dari hasil analisis selama 7 hari yaitu, 0,0587; 0,0376; 0,0372; 0,0500; 0,0356; 0,0367 dan 0,0359 mol/mol. Semakin tinggi nilai pH sampel semakin rendah nilai H2S loading. Nilai H2S loading yang diperoleh masih dalam batas aman yang ditentukan oleh US EPA yaitu 16 ppm. Kata kunci: lean amine, amine strength, H2S loading, MDEA

A Comparative Study on Aluminium Pillared Smectite Synthesis From Synthetic Saponite and Indonesian Montmorillonite Is Fatimah; Shaobin Wang; Karna Wijaya; Narsito
ASEAN Journal of Chemical Engineering Vol 8, No 1 & 2 (2008)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Synthesis of aluminium pillared smectite from two raw clays, saponite and Indonesian montmorillonite, has been investigated. The clays were characterized by XRD, N2 adsorption isotherm, DTA-TGA, surface acidity measurements using pyridine-FTIR method, and evaluated for catalytic esterification reaction. The characterization indicated an increase in d001 by metal oxide pillar, increase in BET specific surface area, and surface acidity. DTA-curves showed exothermic peaks in the range of 100-130oC and 400-800oC. TGA curves showed an increase in thermal stability of pillared clays. For both kinds of clays, it was also observed that pillarization reduced weight loss at high temperature. Esterification reaction rate constant and surface acidity data showed that the Brønsted acidity dominantly affects the reaction mechanism compared with the effect of specific surface area and Lewis acid site. Montmorillonite and pillared montmorillonite exhibited higher catalytic activity than saponite and pillared saponite although the specific surface areas of the latter are higher.

Indonesian Modified Clay for Dye Waste Treatment Iwan Sumarlan; Is Fatimah; Karna Wijaya
Acta Chimica Asiana Vol. 3 No. 1 (2020)
Publisher : Chemistry Education Program, the University of Mataram

Synthesis and Characterization of TiO2 Coated on Clay Pillared Alumina (PILC) for Methyl Orange Photodegradation Under UV Illumination. The synthesis included both pillarization the clay with alumina and TiO2 coated on PILC using impregnation method. Some characterizations also were employed to this research such as X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), N2 Adsorption Isotherm and UV-Visible Diffuse Reflectance (DR UV). The photocatalyst was then used to decompose waste dye, methyl orange (MO). Among three photocatalysts that were successfully synthesized, PILC Ti 1.0% had the highest activity to decompose the waste dye.

Synthesis and Characterization of 2,4-Dichlorophenoxypropanoic Acid (2,4-DP) Herbicide Interleaved into Calcium-Aluminium Layered Double Hydroxide and the Study of Controlled Release Formulation Farah Liyana Bohari; Nur Aishah Mohd Noor; Sheikh Ahmad Izaddin Sheikh Mohd Ghazali; Nur Nadia Dzulkifli; Is Fatimah; Nurain Adam
Indonesian Journal of Chemistry Vol 22, No 5 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.73546

The commonly used herbicide in agriculture, namely 2,4-dichlorophenoxypropanoic acid (2,4-DP), is an anionic herbicide used to interleave into the interlayer of calcium-aluminum layered double hydroxide (Ca-Al LDH) employing co-precipitation method to form a new nanohybrid labeled as CAL-2,4DP. The LDH compound serves as a host in supporting the herbicide’s controlled release formulation. The effective interleave was investigated by employing a powder X-Ray Diffraction (XRD) pattern at 0.025 M nanocomposite, which revealed that the basal spacing has increased from 8.0 Å to 23.8 Å. The ATR-FTIR spectra further supported the interleaving, where the nitrate peak (NO−) diminished, and the carboxylate ion (COO−) band appeared at 1653 cm−1. The percentage loading of CAL-2,4DP was 71.26%, calculated from the carbon content in the sample. The BET analysis shows that CAL-2,4DP was a mesoporous material relying on nitrogen-desorption isotherms. The release of 2,4-DP ions into the aqueous solutions followed the order of PO43− > CO32− > Cl− with a percentage of 83, 65, and 30%, respectively. This work indicates the successful interleaving process of the 2,4-DP anion and the potential of CAL-2,4DP as an eco-friendly agrochemical that can be beneficial for farmers in minimizing herbicide usage to the environment.

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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