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All Journal Jurnal Neutrino : jurnal fisika dan aplikasinya Alchemy : Journal of Chemistry SAINSTIS The Journal of Pure and Applied Chemistry Research JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Science and Technology Indonesia ALCHEMY Jurnal Penelitian Kimia Bulletin of Chemical Reaction Engineering & Catalysis al Kimiya : Jurnal Ilmu Kimia dan Terapan
Anton Prasetyo
Program Studi Kimia, Fakultas Sains Dan Teknologi, UIN Maulana Malik Ibrahim Malang
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Environmental Science Materials Science & Nanotechnology Medicine & Pharmacology Physics

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Synthesis and Characterization of Fe-Doped CaTiO3 Polyhedra Prepared by Molten NaCl Salt Dwi Rahayu Novianti; Fikri Haikal; Usman Ali Rouf; Arie Hardian; Anton Prasetyo
Science and Technology Indonesia Vol. 7 No. 1 (2022): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2353.615 KB) | DOI: 10.26554/sti.2022.7.1.17-21

Abstract

CaTiO3 as one of the perovskite-based photocatalysts has a band gap energy of 3.5 eV (~354 nm), thus will work at the ultraviolet light region. One of the strategies to decrease the band gap energy is doping metal. In this research, CaTiO3 was doped by Fe element as purposes to decreasing its band gap energy. Fe doped CaTiO3 compounds were synthesized using molten NaCl salt method. The diffractogram samples showed that the Fe-doped CaTiO3 crystal was successfully prepared. Meanwhile, the SEM images showed that the particle shape was regular polyhedral morphology, and doping Fe3+ caused the particle size to decrease and agglomerated. The UV-Vis DRS spectra showed that the Fe-dopant revealed the absorption light at visible range wavelength.
Kinetic Study of Styrene Oxidation over Titania Catalyst Supported on Sulfonated Fish Bone-derived Carbon Ratna Kusumawardani; Mukhamad Nurhadi; Teguh Wirawan; Anton Prasetyo; Nabila Nur Agusti; Sin Yuan Lai; Hadi Nur
Bulletin of Chemical Reaction Engineering & Catalysis 2022: BCREC Volume 17 Issue 1 Year 2022 (March 2022)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.17.1.13133.194-204

Abstract

The kinetic evaluation of titania supported sulfonated fish bone-derived carbon (TiO2/SFBC) as a catalyst in styrene oxidation by aqueous hydrogen peroxide was carried out. The catalysts were prepared by carbonation of fishbone powder at varying temperatures 500, 600 and 700 °C, respectively for 2 h, followed by sulfonation with sulfuric acid (1M) for 24 h and impregnated by varied titania concentration 500, 1000 and 1500 µmol. The physical properties of catalysts were characterized using Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), Scanning Electron Microscope-Energy Dispersive X-Ray (SEM-EDX) and the nitrogen adsorption-desorption analysis. The catalytic activity result showed that TiO2/SFBC can be used as a potential catalyst in styrene oxidation. Worth noting that the sulfonation process has not only transformed the TiO2/FBC particulates (without sulfonation) to cuboid-shaped TiO2/SFBC (with sulfonation) but also contributed to the high selectivity of benzaldehyde. On the other hand, carbonization at different temperatures has an indistinct effect on catalytic performance due to their similar surface areas. The styrene conversion rate responded positively with the increasing amount of titania in the functionalized composites. The styrene oxidation by aqueous H2O2 unraveled the first-order reaction with the activation energy of ⁓63.5 kJ. 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). 
Uji Aktivitas Fotokatalis Senyawa Aurivillius Lapis EmpaT SrBi4Ti4O15 dalam Mendegradasi Rhodamine-B Fikri Haikal; Anton Prasetyo
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol 8, No 1 (2021): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v8i1.11885

Abstract

Senyawa berstruktur Aurivillius dilaporkan mempunyai potensi untuk digunakan sebagai material fotokatalis. Dalam penelitian ini dikaji kemampuan aktivitas fotokatalis senyawa Aurivillius lapis empat SrBi4Ti4O15 dalam mendegradasi senyawa Rhodamine-B. Senyawa uji SrBi4Ti4O15 disintesis melalui metode lelehan garam campuran Na2SO4/K2SO4. Difraktogram menunjukkan bahwa senyawa SrBi4Ti4O15 telah berhasil disintesis dan tidak ditemukan fasa pengotor. Hasil refinement difraktogram dengan metode Rietvield diketahui bahwa senyawa produk SrBi4Ti4O15 memiliki grup ruang A21am dengan parameter kisi a, b, c masing-masing 5,4498; 5,4336; 40,9469 Å. Spektrum ultraviolet visible diffuse reflectancy spectroscopy (UV-Vis DRS) menunjukkan bahwa senyawa SrBi4Ti4O15 memiliki energi celah pita sebesar 3,02 eV (~410,54 nm). Hasil uji degradasi larutan Rhodamine-B menunjukkan bahwa senyawa SrBi4Ti4O15 mengikuti model reaksi pseudo orde kedua dengan kemampuan mendegradasi sebesar 41,10% pada waktu 120 menit.
Pengaruh Penggantian Kation-A/Sr oleh Ba pada Morfologi Partikel BaxSr(1-x)TiO3 (x = 0; 0,2; 0,4; 0,6; 0,8) Hasil Sintesis dengan Metode Lelehan Garam Hasal Maulidianingtiyas; Aldi Dwi Prasetiyo; Fikri Haikal; Indra Nur Cahyo; Vina Nurul Istighfarini; Anton Prasetyo
ALCHEMY Jurnal Penelitian Kimia Vol 17, No 2 (2021): September
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.17.2.48554.211-218

Abstract

SrTiO3 adalah material berstruktur perovskit yang dilaporkan berpotensi sebagai material fotokatalis. Penggantian pada sebagian kation-A material fotokatalis berstruktur perovskit dilaporkan dapat menurunkan energi celah pitanya, akan tetapi unsur pengganti juga dilaporkan mempengaruhi morfologi partikel yang terbentuk. Dalam penelitian ini, dikaji pengaruh penggantian kation-A pada SrTiO3(BaxSr(1-x)TiO3 (x = 0; 0,2; 0,4; 0,6; 0,8)) terhadap morfologi partikelnya. Senyawa uji disintesis dengan metode lelehan garam dan dalam penelitian ini menggunakan garam NaCl. Difraktogram sampel menunjukkan bahwa senyawa uji berhasil disintesis kecuali pada x = 0,8 masih ditemukan senyawa pengotor yang berupa TiO2 dan BaCO3. Gambar SEM menunjukkan bahwa keberadaan kation Ba mengubah morfologi partikel dari nearly cubic menjadi bentuk polihedra dan menyebabkanukuran partikel menjadi lebih besar.The Effect of Cation-A/Sr Replacement by Ba on Particle Morphology of BaxSr(1-x)TiO3 (x = 0; 0.2; 0.4; 0.6; 0.8) Synthesized by Molten Salt Method. SrTiO3 is a perovskite structure material that is reported as a potential photocatalyst material. Replacement of a part of the A-cation on a perovskite structure was reported can reduce its bandgap energy. However, the replacement element was also reported to affect the particle morphology. In this study, the effect of A-cation replacement on SrTiO3 (BaxSr(1-x)TiO3 (x = 0, 0.2, 0.4, 0.6, 0.8) to its particle morphology was studied. The sample of BaxSr(1-x)TiO3 (x = 0, 0.2, 0.4, 0.6) were synthesized by molten salt synthesis method (using NaCl salt). The diffractogram showed that the target compound was successfully synthesized but at x = 0.8 still found impurities TiO2 and BaCO3. SEM images showed that Ba-cation presence changes the particle morphology from nearly cubic to polyhedral shape and the particle size also becomes larger. 
Co-Authors Abdul Aziz Abi Dwi Hastono Agie Botianovi Aldi Dwi Prasetiyo Aminatus Arifah Andy Nur Muhammad Guntur Arie Hardian Dwi Rahayu Novianti Erna Hastuti Fahmi Eksa Sagita Fikri Haikal Fikri Haikal Fikri Haikal Hadi Nur Hasal Maulidianingtiyas Himmatul Barroroh Indra Nur Cahyo Khoridatud Diyanah Maksum Maksum Mohamad Thoif Muhammad Lathif al-Abror Mukhamad Nurhadi, Mukhamad Nabila Nur Agusti Nur Aini Nur Aini Nur Robi'ah Adawiyah Mahmud Puspa Sari Ratna Kusumawardani, Ratna Rini Nafsiati Saiyidatul Umah Sheley Marela Sin Yuan Lai Siti Nur Chasanah Suci Noerfaiqotul Himmah Suci Noerfaiqotul Himmah Susi Nurul Khalifah Susi Nurul Kholifah Teguh Wirawan Usman Ali Rouf Usman Ali Rouf Veinardi Suendo Vina Nurul Istighfarini