Synergetic effect of ZnO/NiO nanocomposite on the enhancement of photocatalytic degradation efficiency of dyes molecules
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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.
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Iasya, Y. K. A. A., Khoerunnisa, F., Dwi, S. S., Putri, R. A., Nurhayati, M., Arrozi , U. S. F., Permana, Y., Handayani, M., Astuti, W. D., Da, O. W., & Irnanda, I. (2025). Synergetic effect of ZnO/NiO nanocomposite on the enhancement of photocatalytic degradation efficiency of dyes molecules. Communications in Science and Technology, 10(1), 1-9. https://doi.org/10.21924/cst.10.1.2025.1583
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Y. Zhang, J. Zhou, W. Cai, J. Zhou, Z. Li, Enhanced photocatalytic performance and degradation pathway of Rhodamine B over hierarchical double-shelled zinc nickel oxide hollow sphere heterojunction, Appl. Surf. Sci. 430 (2018) 549–560.
F. Tian, W. Han, J. Hu, H. Wang, H. Li, F. Geng, et al., Oxygen vacancy-enriched bilayer flower-like structure of ZnO&NiO@C-ZnO nanorod arrays on carbon cloth with improved electrochemical performance, J. Energy Storage 72 (2023).
E. E. El-Katori, E. A. Kasim, D. A. Ali, Sol–gel synthesis of mesoporous NiO/ZnO heterostructure nanocomposite for photocatalytic and anticorrosive applications in aqueous media, Colloids Surf. A Physicochem. Eng. Asp. 636 (2022).
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Y. Jiang, H. Zhang, X. Zuo, C. Sun, Y. Zhang, H. Huang, et al., Construction of ZnO/Ni@C hollow microspheres as efficient electromagnetic wave absorbers with thin thickness and broad bandwidth, J. Mater. Sci. Technol. 188 (2024) 62–72.
B. Ben Salem, G. Essalah, S. Ben Ameur, B. Duponchel, H. Guermazi, S. Guermazi, et al., Synthesis and comparative study of the structural and optical properties of binary ZnO-based composites for environmental applications, RSC Adv. 13 (2023) 6287–6303.
S. Yousaf, S. Zulfiqar, M. I. Din, P. O. Agboola, M. F. Aly Aboud, M. F. Warsi, et al., Solar light irradiated photocatalytic activity of ZnO-NiO/rGO nanocatalyst, J. Mater. Res. Technol. 12 (2021) 999–1009.
F. Aziz, H. M. Abo-Dief, A. Z. Warsi, M. F. Warsi, M. Shahid, T. Ahmad, et al., Facile synthesis of NiO/ZnO nano-composite by co-precipitation, characterization and photocatalytic study of colored and colorless organic pollutants by solar irradiation, Physica B Condens. Matter 640 (2022).
X. Zhang, L. Zhou, X. Tu, F. Hu, Hydrothermal synthesis of ZnO crystals: Diverse morphologies and characterization of the photocatalytic properties, Polyhedron 246 (2023).
S. R. Jadhav, S. V. Mohite, K. C. An, D. H. Jang, K. Erande, Y. Kim, et al., Crafting defective ZnO nanoparticles: A green synthesis for enhanced photocatalytic degradation of organic pollutants, Ceram. Int. (2024).
M. Priyanka, G. S. Reddy, T. R. Kumar Reddy, C. S. Naveen, C. N. S. Kumar, M. Lodhe, et al., Synthesis and characterization of Y and Mn-doped ZnO nanoparticles: Structural, optical, morphological, and gas sensing investigations, Physica B Condens. Matter 687 (2024).
R. Bairy, P. S. Patil, S. R. Maidur, H. Vijeth, M. S. Murari, U. K. Bhat, The role of cobalt doping in tuning the band gap, surface morphology and third-order optical nonlinearities of ZnO nanostructures for NLO device applications, RSC Adv. 9(39) (2019) 22302–22312.
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