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All Journal JURNAL KIMIA SAINS DAN APLIKASI Jurnal Riset Kimia Science and Technology Indonesia Molekul: Jurnal Ilmiah Kimia Sains dan Matematika Darma Sabha Cendekia Molekul: Jurnal Ilmiah Kimia Bulletin of Chemical Reaction Engineering & Catalysis Indonesian Journal of Material Research
Anung Riapanitra
Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, Jenderal Soedirman University, Purwokerto|Jenderal Soedirman University|Indonesia
Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Physics

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Journal : JURNAL KIMIA SAINS DAN APLIKASI

 1 
Photodegradation of Methylene Blue Dye Using BiVO₄/g-C₃N₄ Composites under Visible Light Irradiation Anung Riapanitra; Tien Setyaningtyas; Ghinatanitha Haqqu Haryadinaru
Jurnal Kimia Sains dan Aplikasi Vol 27, No 8 (2024): Volume 27 Issue 8 Year 2024
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.27.8.363-370

Abstract

This study evaluates the degradation of methylene blue through photocatalysis using BiVO4/g-C3N4 material with the help of visible light. Material characterization was conducted using X-ray diffraction, scanning electron microscopy, and UV-Vis diffuse reflectance spectroscopy data. The characterization results show that the crystal structure of BiVO4/g-C3N4 is a heterojunction between monoclinic BiVO4 and hexagonal g-C3N4, with a crystal size of about 10.16 nm and a band gap energy value of about 2.16 eV. The morphology formed is a combination of sheet and rod-like. This study optimized the photocatalytic activity of the composite by analyzing the variation of g-C3N4 concentration, degradation time, and methylene blue pH. The results show that the BiVO4/g-C3N4 sample has optimal photocatalytic and adsorption properties in sample B (1:3) with pH 7 and a degradation time of 150 minutes. Under these conditions, the BiVO4/g-C3N4 composite successfully degraded methylene blue by 94.14%. The rate kinetics of the photocatalytic reaction followed first order, with *OH species playing the most role in the degradation mechanism. These findings highlight the potential of BiVO4/g-C3N4 as an effective photocatalyst material for organic pollutant degradation applications, offering a sustainable solution for wastewater treatment.
Physicochemical Characteristics of PVDF/ZSM-5 Composite Membrane for Potential Applications in Vanadium Redox Battery Alifia, Zaskia; Haryanto, Michael Julian; Fitriyani, Devi Ayu; Riapanitra, Anung
Jurnal Kimia Sains dan Aplikasi Vol 28, No 6 (2025): Volume 28 Issue 6 Year 2025
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.28.6.299-306

Abstract

Composite membranes were synthesized using poly-(vinylidene fluoride) (PVDF) and zeolite (ZSM-5) to improve the performance of PVDF as a battery separator. The PVDF-ZSM-5 membranes, prepared with varying concentrations of ZSM-5, underwent characterizations of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). These analyses revealed a notable increase in β-phase formation in PVDF, greater porosity, and improved surface morphology due to the incorporation of ZSM-5. Evaluations of their physicochemical properties showed that these membranes resulted in electrical conductivity up to 96.4 mS/cm, enhanced contact area, porosity reaching 78.61%, and flux value up to 5.4 ×10⁻2 L m⁻2 h⁻2. Adjustments in ZSM-5 concentrations proved instrumental in fine-tuning these performance metrics. These findings highlight the potential of PVDF-ZSM-5 membranes as a cost-effective membrane separator for redox battery systems. This research lays the groundwork for future advancements and broader commercial applications in energy storage technology.
Co-Authors Agus Soleh Alfa Marcorius Alifia, Zaskia Amaliana Sulistyowati, Alin AMIN FATONI Anas Rohadi Anas Rohadi Arieveali, Heroldinho Dian Riana Ningsih Dyah Indriastuti Febiyanto Febiyanto Fitriyani, Devi Ayu Ghinatanitha Haqqu Haryadinaru Hartiwi Diastuti Haryadinaru, Ghinatanitha Haqqu Haryanto, Michael Julian Istinganatun Khoeriyah Kapti Riyani Kapti Riyani Kapti Riyani Mardiyah Kurniasih Mardiyah Kurniasih Mekar Dwi Anggraeni Mohammad Afif Muhamad Wisnu Nugroho Muhammad Sofi Khoerul Amal Ponco Iswanto Qonita Yusry, Azwinda Richo Dwi Permadi Roy Andreas Shu Yin Sukma Sewiji Tien Setyaningtyas Tien Setyaningtyas Tien Setyaningtyas Uyi Sulaeman Uyi Sulaeman Uyi Sulaeman Uyi Sulaeman Uyi Sulaeman Zusfahair Zusfahair