CARBON QUANTUM DOTS (CQDS) COMPOSITES PHOTOCATALYST FOR PHOTOCATALYTIC DEGRADATION OF WASTEWATER CONTAINING METHYL BLUE DYE
Abstract
CARBON QUANTUM DOTS (CQDS) COMPOSITES PHOTOCATALYST FOR PHOTOCATALYTIC DEGRADATION OF WASTEWATER CONTAINING METHYL BLUE DYE
Journal: Acta Chemica Malaysia (ACMY)
Author: H. M. Solayman, Umi Rabiatul Ramzilah P. Remli, Md. Arif Hossen, Kah Hon Leong, Sim Lan Ching, Noor Yahida Yahya, Azrina Abd Aziz, Minhaj Uddin Monir
ISSN: 2576-6732
e-ISSN: 2576-6724
This is an open access journal distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
DOI: 10.26480/acmy.01.2025.06.16
CQDs are one of the fast growing photocatalyst in the field of nanotechnology due to their excellent chemical, photostability and photoluminescence ability. Recently, CQDs are used as prominence photocatalyst in the field of photocatalytic dye wastewater treatment, bioimaging, bio sensing, bio medicine, photocatalytic hydro production and so on. The purpose of this research is to treat the methyl blue (MB) dye containing wastewater by using CQDs composites derived by water melon rinds (WMR). CQDs, TiO2, and CQDs/TiO2 photocatalysts were prepared by hydrothermal method and characterized by XRD, SEM, EDX, BET, XPS, UV-Vis and Photoluminescence spectra. In the results, it is found that CQDs with 0.1 g/L catalyst loading at 5 mg/L of dye concentration has the highest photocatalytic activity with 73% of MB removal compared to TiO2 (55%) and CQDs/TiO2 (27%) respectively. The photodegradation rate of MB was decreased with the increased of catalyst loading and higher degradation were achieved at the lowest initial dye concentration. Interestingly the degradation efficiency of MB was increased with augmented of pH concentration. So, this study proved that MB dye is reduced by utilizing CQDs photocatalyst in an environmentally friendly way. Finally, it can be summaries that CQDs has the potentiality to enhance photocatalytic performance.
Pages | 06-16 |
Year | 2025 |
Issue | 1 |
Volume | 9 |
