Preparation of ternary Pt–NiO–ZnO hybrids and investigation of its photocatalytic performance toward methyl orange
- 67 Downloads
ZnO has received much attention as a photocatalyst due to its abundant source and nontoxic nature. However, the rapid recombination of e−/h+ pairs gravely hinders the practical application of ZnO photocatalyst. Incorporation of noble metal Pt and the formation of NiO–ZnO heterostructures have been proved effective way to improve the photocatalytic performance of ZnO. However, photocatalytic behavior of ternary Pt–NiO–ZnO hybrids has not been studied yet. In this paper, we successfully prepared Pt doped ZnO as well as NiO–ZnO heterostructures. The photocatalytic performance of the as-prepared composites has been systematically investigated. Under the optimized ratio of Ni/Zn = 2:10, NiO–ZnO–Pt ternary hybrids were fabricated and NiO–ZnO with 1% of Pt incorporated revealed the highest degradation rate toward methyl orange. Nearly 95% of methyl orange can be degraded within 90 min. The photocatalytic reaction mechanism of the MO degradation by ternary Pt–NiO–ZnO hybrids has also been proposed. The Pt–NiO–ZnO composite not only can serve as a high-performance photocatalyst, but also can be applied in the fields of sensors, hydrogen generation and environmental pollution treatment, etc.
This work was financially supported by the National Natural Science Foundation of China (Grant Nos. 21806129, 51872238), the Fundamental Research Funds for the Central Universities (Grant Nos. 3102018zy045 and 3102017zy002) and the Natural Science Basic Research Plan in Shaanxi Province of China (No. 2017JQ5116). Funding was provided by National Natural Science Foundation of China with Grant No. 51704242 and Natural Science Foundation of Shaanxi Province (CN) with Grant no. 2018JM5094.
- 13.Y.K. Mishra, G. Modi, V. Cretu, V. Postica, O. Lupan, T. Reimer, I. Paulowicz, V. Hrkac, W. Benecke, L. Kienle, R. Adelung, Direct growth of freestanding ZnO tetrapod networks for multifunctional applications in photocatalysis, UV photodetection, and gas sensing. ACS Appl. Mater. Inter. 7, 14303–14316 (2015)CrossRefGoogle Scholar
- 18.Y.M. Hunge, A.A. Yadav, B.M. Mohite, V.L. Mathe, C.H. Bhosale, Photoelectrocatalytic degradation of sugarcane factory wastewater using WO3/ZnO thin films. J. Mater. Sci.: Mater. Electron. 29, 3808–3816 (2018)Google Scholar
- 20.Y.M. Hunge, A.A. Yadav, V.L. Mathe, Oxidative degradation of phthalic acid using TiO2 photocatalyst. J. Mater. Sci.: Mater. Electron. 29, 6183–6187 (2018)Google Scholar
- 22.Y.M. Hunge, A.A. Yadav, V.L. Mathe, Photoelectrocatalytic degradation of methylene blue using spray deposited ZnO thin films under UV illumination. MOJ Poly. Sci. 1(4), 00020 (2018)Google Scholar
- 34.M. Qin, K. Lin, Q. Shuai, H. Liang, J. Peng, C. Mao, Y. Ji, H. Wu, Facile synthesis of 2D single-phase Ni0.9Zn0.1O and its application in decolorization of dye. J. Mater. Sci.: Mater. Electron. 29, 9740–9744 (2018)Google Scholar
- 36.A. Sápi, A. Varga, G.F. Samu, D. Dobó, K.L. Juhász, B. Takács, E. Varga, Á Kukovecz, Z. Kónya, C. Janáky, Photoelectrochemistry by design: tailoring the nanoscale structure of Pt/NiO composites leads to enhanced photoelectrochemical hydrogen evolution performance. J. Phys. Chem. C 121, 12148–12158 (2017)CrossRefGoogle Scholar
- 48.Z. He, X. Sun, X. Gu, SrTiO3 nanoparticles and nanofibers: synthesis and comparison of photocatalytic properties. J. Mater. Sci.: Mater. Electron. 28, 13950–13955 (2017)Google Scholar