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All Journal Communications in Science and Technology Jurnal Kartika Kimia JKPK (Jurnal Kimia dan Pendidikan Kimia) Journal of Fibers and Polymer Composites Jurnal Pengabdian Isola Jurnal Riset dan Praktik Pendidikan Kimia al Kimiya : Jurnal Ilmu Kimia dan Terapan
Nurhayati, Mita
Universitas Pendidikan Indonesia
Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Engineering Materials Science & Nanotechnology Other

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Synergetic effect of ZnO/NiO nanocomposite on the enhancement of photocatalytic degradation efficiency of dyes molecules Iasya, Yurin Karunia Apsha Albaina; Khoerunnisa, Fitri; Dwi, Sadina Sahitya; Putri, Restiani Alia; Nurhayati, Mita; Arrozi , Ubed Sonai Fahruddin; Permana, Yessi; Handayani, Murni; Astuti, Wijayanti Dwi; Da, Oh Wen; Irnanda, Istifhamy
Communications in Science and Technology Vol 10 No 1 (2025)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.10.1.2025.1583

Abstract

The discharge of organic dyes into water systems poses severe risks to human health and aquatic ecosystems. A remarkable technique that is increasingly recognized for dyes degradation is photocatalysis. This work aims to investigate the role of zinc oxide/nickel oxide (ZnO/NiO) nanocomposites in enhancing photocatalytic degradation efficiency of dyes molecules. The nanocomposites were prepared using a simple ultrasonication technique and analyzed through X-ray diffraction (XRD), scanning electron microscopy (SEM), and electrochemical impedance spectroscopy (EIS). The XRD pattern of the ZnO/NiO nanocomposites exhibited characteristic peaks aligned with the ZnO and NiO phases, referring to JCPDS standards. The SEM images of nanocomposites featured the rod and irregular flake-like structures with the average size of 80 nm. The nanocomposites showed the highest dye photodegradation efficiency (RB 93.65% and MO 94.82%) in view of a larger semicircular diameter and lowest band gap energy as verified by Nyquist plot and DFT calculation. These results emphasized the synergistic effect of ZnO/NiO nanocomposites in promoting dye photocatalytic degradation.
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.
Co-Authors Agus Setiabudi Anceu Murniati Annifah, Riri Uswatun Aprianto, Agil Arie Hardian Arrozi , Ubed Sonai Fahruddin Asep Kadarohman Asep Suryatna Ashfiya, Putri Sayyida Astuti, Wijayanti Dwi Atiek Rostika Noviyanti Aziz, Hafiz Aji Boon Seng Ooi Budiman Anwar Da, Oh Wen Dani Gustaman Syarif Dwi, Sadina Sahitya Eli Hendrik Sanjaya Fauzi, Rafi N. Fitri Khoerunnisa Gebi Dwiyanti Halim, Riyan Hendrawan Hendrawan Hendrawan Hendrawan Hera Herlina Iasha, Yurin Karunia Apsha Albaina Iasya, Yurin Karunia Apsha Albaina Ida Hamidah Ijang Rohman Irnanda, Istifhamy Jasmansyah, Jasmansyah Karya, Teguh Khoiriah, Selmi F. Lathifah, Siti Maulani Maharani, Brigitta Stacia Mr Sjaeful Anwar Muhammad Reza Murni Handayani Nafisah, Aulia Zakiyatun putri kania, putri Putri, Restiani Alia Silvia Widiyanti Sri Mulyani Widiyanti, Silvia Yaya Sonjaya Yessi Permana Yuliani, Galuh