Institute of Safety Engineering, Hubei Huanggang Polytechnic of Emergency Management, Huanggang 438000, People’s Republic of
China
Email: 1107250160@qq.com (J.A.M.); 15507288705@163.com (J.H.Y.); 3317572004@qq.com (Y.H.); 1872107317@qq.com (Y.C.L.);
1343100144@qq.com (J.J.W.); 2234578489@qq.com (Y.N.)
*Corresponding author
Manuscript received December 24, 2024; accepted March 7, 2025; published July 1, 2025.
Abstract—3D-CuO is a new type of semiconductor nanomaterial. The uneven surface provides a larger specific surface area with more reaction sites, which leads to good electrical and optical properties. In the paper, 3D-CuO
semiconductor nanomaterials were synthesized by the solvothermal method. The synthesized 3D-CuO for the
photocatalytic activation of sulfites in order to degrade the organic dye wastewater under visible light was investigated. The results showed that 3D-CuO /NaHSO3 in neutral conditions performed the best photocatalytic degradation effects of methyl orange. Under the visible light, 3D-CuO tends to produce more photogenerated electrons and holes, and HSO3 - is oxidized by the photogenerated holes in the system and finally transformed into SO4 ● - free radicals. A new advanced oxidation method based on SO4●- was developed for the treatment of organic dye wastewater.
Keywords—3D-CuO, NaHSO3, degradation, dye wastewater
Cite: Jinai Ma, Junhao You, Yang Hu, Yongchao Liu, Junjie Wang, and Yao Ning, "Study on the Degradation of Methyl Orange in Wastewater by 3D-CuO Photocatalytic Activation of Sodium Bisulfite," International Journal of Engineering and Technology, vol. 17, no. 3, pp. 140-143, 2025.
Copyright © 2025 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (
CC BY 4.0). 
