Construction of CuO/CdS composite nanostructure for photodegradation of pollutants in sewage
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The composite of semiconductor photocatalytic materials can effectively improve the solar energy utilization efficiency and quantum efficiency. Therefore, composite semiconductor materials have gradually become one of the most promising photocatalyst for solving water pollution problems. In this work, CuO nanowire arrays were prepared on Cu substrate by a thermal oxidation method, then CuO/CdS composite nanostructure was synthesized through an SILAR technique sequentially. The morphology, micro-area element composition, phase structure and optical properties of CuO/CdS nanostructure were characterized by field emission scanning electron microscopy, energy-dispersive spectroscopy, X-ray diffraction, ultraviolet–visible and photoluminescence spectroscopy respectively. Based on the test results, we systematically discussed the effects of several experimental conditions such as copper substrate, annealing temperature and reaction time on the properties and structure of CuO/CdS composite nanostructure. The resultant binary CuO/CdS composite nanostructure exhibited more excellent photocatalytic activity than pure CuO nanowire arrays both in the photodegradation of simulated contaminant methylene blue (MB) and practical pollutants of sewage.
This work was supported by the Open Research Foundation of Engineering Research Center of Nano-Geomaterials of Ministry of Education (No. NGM2019KF026) and Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control (No. 2017B030301012). The financial support was gratefully appreciated.
- 20.S.H. Wu, G.L. Fu, W.Q. Lv, J.K. Wei, W.J. Chen, H.Q. Yi, M. Gu, X.D. Bai, L. Zhu, C. Tan, Y.C. Liang, G.L. Zhu, J.R. He, X.Q. Wang, K.H.L. Zhang, J. Xiong, W.D. He, A single-step hydrothermal route to 3D hierarchical Cu2O/CuO/rGO nanosheets as high-performance anode of lithium-ion batteries. Small 14(5), 1702667 (2018)CrossRefGoogle Scholar
- 23.Q. Xin, A. Papavasilou, N. Boukos, A. Glisenti, J.P.H. Li, Y. Yang, C.J. Philippopoulos, E. Poulakis, F.K. Katsaros, V. Meynen, P. Cool, Preparation of CuO/SBA-15 catalyst by the modified ammonia driven deposition precipitation method with a high thermal stability and an efficient automotive CO and hydrocarbons conversion. Appl. Catal. B 223, 103–115 (2018)CrossRefGoogle Scholar
- 25.Z.F. Wang, F. Li, H.T. Wang, A. Wang, S.M. Wu, An enhanced ultra-fast responding ethanol gas sensor based on Ag functionalized CuO nanoribbons at room-temperature. J. Mater. Sci. 29(19), 16654–16659 (2018)Google Scholar
- 30.J.J.Y. Sung, S.C. Ng, F.K.L. Chan, H.M. Chiu, H.S. Kim, T. Matsuda, S.S.M. Ng, J.Y.W. Lau, S. Zheng, S. Adler, N. Reddy, K.G. Yeoh, K.K.F. Tsoi, J.Y.L. Ching, E.J. Kuipers, L. Rabeneck, G.P. Young, R.J. Steele, D. Lieberman, K.L. Goh, An updated asia pacific consensus recommendations on colorectal cancer screening. Gut 64(1), 121–132 (2015)CrossRefGoogle Scholar
- 36.Y.H. Zhang, Y.L. Li, B.B. Jiu, F.L. Gong, J.L. Chen, S.M. Fang, H.L. Zhang, Highly enhanced photocatalytic H2 evolution of Cu2O microcube by coupling with TiO2 nanoparticles. Nanoscale 30, 145401 (2019)Google Scholar
- 47.G. Sun, Y. Zhang, Q. Kong, X. Zheng, J. Yu, X. Song, CuO-induced signal amplification strategy for multiplexed photoelectrochemical immunosensing using CdS sensitized ZnO nanotubes arrays as photoactive material and AuPd alloy nanoparticles as electron sink. Biosens. Bioelectron. 66, 565–571 (2015)CrossRefGoogle Scholar
- 49.J.M. Du, M.K. Yang, F.F. Zhang, X.C. Cheng, H.R. Wu, H.C. Qin, Q.S. Jian, X.L. Lin, K.D. Li, D.J. Kang, Enhanced charge separation of CuS and CdS quantum-dot-cosensitized porous TiO2-based photoanodes for photoelectrochemical water splitting. Ceram. Int. 44(3), 3099–3106 (2018)CrossRefGoogle Scholar