Fatimah, Is and Nurlaela, Nunung and Nugraha, Rafi Adhi and Fauziyyah, Anas Zahra and Salsabila, Naurah Fitiah and Sagadevan, Suresh and Purwiandono, Gani and Ramanda, Galih Dwiki and Oh, Won-Chun (2025) Zero valent nickel biochar nanocomposites from squeezed orange (Citrus sinensis) as stable and reusable catalyst in wet peroxidation of dye. Materials Chemistry and Physics, 334. ISSN 0254-0584, DOI https://doi.org/10.1016/j.matchemphys.2025.130459.
Full text not available from this repository.Abstract
In this study, zero valent nickel (ZVNi) magnetic biochar nanocomposites were made from squeezed orange peel, and utilized as catalyst in degradation of methyl violet dye under catalytic wet peroxidation (CWPO). The materials were produced by pyrolysis process of nickel-loaded biomass at two varied temperatures; 300o and 400oC with a residence time 120 min. Physicochemical character of the nanocomposites was studied by x-ray diffraction (XRD), gas sorption analysis, x-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), transmission electron microscope (TEM), high resolution transmission electron microscope (HR-TEM), and magnetism measurement. Analysis results from XRD, XPS and HRTEM confirmed the formation of ZVNi dispersed onto biochar with particles size ranging at 5-20 nm. Besides the increased specific surface area that improved adsorptive capability to support catalytic activity, adsorption study revealed the participation of functional group in biochar to reduce dye concentration. Further study on the effect of H2O2 addition as oxidant and the addition of radical scavenger in the reaction system suggest the important role of ZVNi in producing radicals within CWPO process. The materials demonstrated superiority in MV removal by CWPO process with removal efficiency of 99.45 % during 30 min of the treatment. Additionally, the materials expressed reusability until 10th cycles without significant change in removal efficiency.
| Item Type: | Article |
|---|---|
| Funders: | None |
| Uncontrolled Keywords: | Advanced oxidation processes; Biochar; Catalytic wet peroxidation; Magnetic material |
| Subjects: | Q Science > Q Science (General) |
| Divisions: | Nanotechnology & Catalysis Research Centre |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 05 Oct 2025 13:10 |
| Last Modified: | 05 Oct 2025 13:10 |
| URI: | http://eprints.um.edu.my/id/eprint/47922 |
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