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All Journal VALENSI Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Journal of the Indonesian Tropical Animal Agriculture Chimica et Natura Acta Environmental and Materials
RAHMAT WIBOWO
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Earth & Planetary Sciences Energy Engineering Environmental Science Materials Science & Nanotechnology Physics

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Back-matter (June 2025) Wibowo, Rahmat
Journal of the Indonesian Tropical Animal Agriculture Vol 50, No 2 (2025): June
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.50.2.%p

Abstract

Back-matter (June 2025)
Front-matter (September 2025) Wibowo, Rahmat
Journal of the Indonesian Tropical Animal Agriculture Vol 50, No 3 (2025): September
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.50.3.%p

Abstract

Front-matter (September 2025)
Back-matter (September 2025) Wibowo, Rahmat
Journal of the Indonesian Tropical Animal Agriculture Vol 50, No 3 (2025): September
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.50.3.%p

Abstract

Back-matter (September 2025)
Preparation and Characterization of Pt/TiO2 Nanotube Arrays (TNAs) Cathode by Photoreduction Method for Hydrogen Evolution Ningsih, Sherly Kasuma Warda; Wibowo, Rahmat; Gunlazuardi, Jarnuzi
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 11, No. 2, November 2025
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v11i2.46475

Abstract

TiO2 nanotube arrays were fabricated using a two-step anodization method. TNAs have been modified by the photoreduction technique with Pt as the cathode in the photoelectrocatalytic zone for the reduction reaction of H+ to produce hydrogen. TNAs with Pt were modified using H2PtCl6 as the precursor by immersion of this solution on the TNA substrate. Pt/TNAs were characterized using SEM-EDX, UV-Vis DRS, XRD, Raman Spectroscopy, Photoluminescence (PL), and photoelectrochemical analysis. The results show that the morphology of TNAs in the tube forms 2.1mm in height, and Pt nanoparticles are formed on the mouth wall of the tube with a size of approximately 10nm. EDX analysis shows that the composition of Pt/TNAs is approximately 0.15%, Ti 37.09%, and O 62.76%, indicating that Pt has been decorated on the TNAs photoanode. The band gap of Pt/TNAs was 2.82 eV. The diffractogram shows three groups of diffraction peaks, indicating the presence of anatase TiO2, Ti as a substrate, and Pt, which has been modified in the TNAs. The Raman peaks of TNAs are confirmed to appear at Raman shifts of 144.75, 196.51, 395.94, 517.14, and 638.85 cm-1. PEC cathodes for hydrogen production using Pt-decorated TNAs have been successfully prepared using photoreduction.
Front-matter (Desember 2025) Wibowo, Rahmat
Journal of the Indonesian Tropical Animal Agriculture Vol 50, No 4 (2025): December
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.50.4.%p

Abstract

Front-matter (Desember 2025)
Back-matter (Desember2025) Wibowo, Rahmat
Journal of the Indonesian Tropical Animal Agriculture Vol 50, No 4 (2025): December
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.50.4.%p

Abstract

Back-matter (Desember 2025)
Co-Authors Afiten Rahmin Sanjaya Aliyah Einaga, Yasuaki Endang Saepudin, Endang Feri Candra Ivandini Tribidasari Anggraningrum Jarnuzi Gunlazuardi Nurhidayat , Reza Rizqi Sherly Kasuma Warda Ningsih Syauqi, Muhammad Iqbal Utami, Chichi Amne