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All Journal The Journal of Pure and Applied Chemistry Research Jurnal Riset Kimia Walisongo Journal of Chemistry Jurnal Kartika Kimia Jurnal Abdimas Kartika Wijayakusuma Asean Journal of Science and Engineering (AJSE) al Kimiya : Jurnal Ilmu Kimia dan Terapan
Anceu Murniati
Program Studi Kimia, FMIPA-ITB Jl. Ganesha No.10, Bandung 40321
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Engineering Materials Science & Nanotechnology Medicine & Pharmacology Social Sciences Other

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EVALUATION OF MINERAL-BASED HYDROXYAPATITE/ZnO COMPOSITES AS PHOTOCATALISTS FOR METHYLEN BLUE DEGRADATION Hardian, Arie; Nafisah, Aulia Zakiyatun; Karya, Teguh; Halim, Riyan; Murniati, Anceu; Syarif, Dani Gustaman; Noviyanti, Atiek Rostika; Nurhayati, Mita; Jasmansyah, Jasmansyah; Reza, Muhammad
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol. 11 No. 2 (2024): 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.v11i2.37886

Abstract

The use of dyes in the textile industry has increased significantly, raising concerns about their potential to pollute the environment and harm human health. Methylene blue is a widely used synthetic dye, necessitating effective methods for its degradation. Photodegradation is a promising approach to decompose dyes into simpler, less harmful compounds. In this study, hydroxyapatite combined with ZnO was employed as a photocatalyst material to enhance photocatalytic performance. The research aims to degrade methylene blue using a Hydroxyapatite/ZnO (HAp/ZnO) nanocomposite through photodegradation. The optimization of the photodegradation process was investigated by varying irradiation time, methylene blue concentration, and pH. The optimum degradation of methylene blue was achieved using 20 mg of HAp/ZnO nanocomposite at an irradiation time of 120 minutes, an initial methylene blue concentration of 5 ppm, and pH 7. Adsorption isotherm modeling revealed that the process followed the Langmuir isotherm model, with a maximum adsorption capacity (qmax) of 0.3353 mg/g. The degradation followed pseudo-second-order kinetics with a reaction rate constant of 4.0026×105 L/mol·s.
NICKEL-BASED CATALYSTS FOR UREA ELECTROLYSIS: A REVIEW OF ELECTROLYSIS PERFORMANCE AND CATALYST DESIGN Situmorang, Raja Doli Tota Parulian; Sujono, Hernandi; Jasmansyah, Jasmansyah; Murniati, Anceu; Hardian, Arie; Irwansyah, Ferli Septi
Walisongo Journal of Chemistry Vol. 8 No. 2 (2025): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology UIN Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v8i2.26973

Abstract

The increasing concentration of urea in wastewater poses both an environmental challenge and an opportunity for sustainable hydrogen production through urea electrolysis, which depends on efficient electrocatalysts. This review focused on nickel-based catalysts due to their high catalytic activity and stability in alkaline media. Using the PRISMA method, twenty studies published between 2020 and 2025 were analyzed based on current density, cell potential, Tafel slope, and stability. Through thematic analysis, catalysts were categorized according to their structure, composition, design strategy, and performance at 10, 50, 100, and 500 mA cm⁻². The review also highlights the importance of testing catalysts in real wastewater rather than in idealized electrolytes. An effective catalyst should exhibit a porous or layered nanostructure, multimetallic composition, and surface doping, while avoiding noble metals and overly complex architectures that hinder charge transfer and scalability.
Co-Authors Abidin, Muhamad Afiyah, Delinda Nirmala Agma, Muljadji Agustini, Dewi Meliati Ahmad Aminudin Anggi Suprabawati Arie Hardian Asep Najmurrokhman Atiek Rostika Noviyanti Buchari Buchari Budiman, Senadi Dani Gustaman Syarif Gumelar, Niki Gustaman Syarif, Dani Hafidh, Ashary Fathul Halim, Riyan Jasmansyah, Jasmansyah Kamka, Vienna D. Karya, Teguh Kusumaningtyas, Valentina Adimurti Lilis Siti Aisyah, Lilis Siti Muhammad Reza Mulyani, Rahmaniar Nafisah, Aulia Zakiyatun Nisrina, Aniqa Nur, Ilahi Hidayanti Nurhayati, Mita Purbaya, Sari Ragadhita, Risti Rinto Yusriski Rivaldi, Mochammad Heldry Rizky, Amelia Rizky, Karina Mulya Saefudin, Deny Bayu Safi'i, Abdi Wadud Situmorang, Raja Doli Tota Parulian Sujono, Hernandi Suryo Gandasasmita Widyaningsih, Mia Yenny Febriani Yun, Yenny Febriani Yuliana, Trisna ZEILY NURACHMAN