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All Journal JURNAL KIMIA SAINS DAN APLIKASI Jurnal Ilmiah Aplikasi Isotop Radiasi IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Jurnal Penelitian Pendidikan IPA (JPPIPA) Indonesian Journal of Chemistry Celebes Health Journal Medika Alkhairaat : Jurnal Penelitian Kedokteran dan Kesehatan Jurnal Abdi Masyarakat Indonesia
Misriyani Misriyani
2Fakultas Kedokteran, Universitas Alkhairaat, Jl. Diponegoro Palu 94221, Sulawesi Tengah, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Neuroscience Nursing Physics Public Health

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Pengembangan TiO2 nanowire terdoping Nikel Kobalt sebagai Fotokatalis yang Efisien untuk Menghilangkan Pewarna Tartrazine Misriyani; If'all; Lutfiah Sahabuddin
Jurnal Penelitian Pendidikan IPA Vol 10 No 6 (2024): June
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i6.7533

Abstract

Tartrazine is a yellow synthetic dye that is widely used as a coloring agent in food and beverage products. However, the safety of this chemical compound is still a concern due to potential health risks such as allergic reactions, hyperactive behavior in children, increased risk of cancer and other negative impacts. This research aim to introduces a new approach to reduce the concentration of tartrazine dye using cobalt and nickel doped TiO2 nanowires. Cobalt- and nickel-doped TiO2 nanowires were synthesized by a hydrothermal method, followed by thermal treatment at 270°C, and then used in a photocatalytic reactor using UV irradiation to facilitate the reduction of tartrazine concentration. Material characterization was carried out to determine the morphology and crystallinity of the photocatalyst which is effective in reducing the absorption of tartrazine solution. The photocatalytic degradation experiment demonstrates the ability of the synthesized material as a photocatalyst, effectively reducing the absorbance of tartrazine solution, a commonly used food coloring. This finding promises significant progress in the development of sustainable food safety strategies by offering a dye degradation method.
Recent Advances in Magnetic Feˣ⁺/TiO₂ Microfibers for Wastewater Treatment as Climate Change Mitigation Misriyani Misriyani; Yang Tian; Z. Ryan Tian
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.27.8.403-408

Abstract

Chemical dyeing and finishing processes used in the clothing and textile industries are among the main contributors that can increase the impact of climate change. Photocatalysis using nanosized titanium dioxide (TiO2) has been continuously developed as a promising technology for purifying dye wastewater into simpler and environmentally friendly components. In addition, the decoration of iron cations (Fe2+) and (Fe3+) increases the reusability of the photocatalyst due to their magnetic properties, which are easy to collect for the recycling process. Magnetic Fex+/TiO2 microfibers have been successfully prepared using a hydrothermal method using titanium dioxide in an alkaline solution. Cations were added into the solution with the different molar ratios of Ti/Fex+ to produce Fe2+/TNW and Fe3+/TNW, respectively. Photocatalysis activity test using magnetic Fex+/TNW was carried out using methylene blue in a reactor equipped with an incandescent bulb lamp representing solar light. The results showed that adding the cations resulted in a new shape of palm tree leaves, like titanate microfibers. Controlling the cation’s molar ratio produces the magnetic Fex+/TNW with a 50-150 µm length. SEM images of each material presented the uniformly elongated shape and aggregated on one side morphology. In addition, paramagnetic properties indicate that magnetic Fex+/TNW can be easily separated from the dispersion in less than 1 minute using an external magnet. A photocatalysis activity test of magnetic Fex+/TNW was performed by calculating the percent degradation of methylene blue with variations in irradiation time in visible light conditions. The result showed the effectiveness of photodegradation of methylene blue was significantly increased in materials with 3.3 molar ratios of both Ti/Fe2+ and Ti/Fe3+ with a percent degradation reaching 79% and 70%, respectively, in 5 hours. In conclusion, magnetic Fex+/TNW is introduced as an alternative dye wastewater treatment technology that has reusable properties and works well on sustainable energy sources of solar light.
Co-Authors A. Haryanti Ganie Ganie Abdul Kadir Abdul Wahid Wahab Akhmad Rivandi Andi Meutiah Ilhamjaya Bambang Poerwadi Darjito Darjito Dewi Purnamasari Eko Sri Kunarti Erniawati Firdaus Hamid Haerani If'all, If'all Ika handayani Jarnuzi Gunlazuardi Jusni Lutfiah Sahabuddin Masahide Yasuda Misnawaty Mudyawati Kamaruddin Nurhayani Nurhidayat Triananinsi Paulina Taba Peter Kabo Rafly Suwandhi Wahid Rina Mariana Rizalinda Sjahril Sitti Usmia Sri wahyuni Sumarni Tutik Setianingsih Yang Tian Yulia Yusrini Djabir Z. Ryan Tian