CoO-Bi2WO6Z型异质结的构建及其光催化降解C2H4性能研究
Enhanced Ethylene Photodegradation Performance of CoO/Bi2WO6 Composites with Direct Z-Scheme Configuration
DOI: 10.12677/NAT.2020.102002, PDF,    国家自然科学基金支持
作者: 姚慧娟, 黄忠兵：湖北大学物理与电子科学学院，湖北 武汉；苏扬航, 韩亚翔, 陈绪兴, 高 云*, 李 荣*：湖北大学材料科学与工程学院，湖北 武汉
关键词: 乙烯；光催化；CoO；Bi2WO6；Z型结构；Ethylene； Photocatalysis； CoO； Bi2WO6； Z-Scheme
摘要: 利用太阳光高效光催化降解空气中的微量乙烯依然是一个很大的挑战。本文在前期研究的基础上，根据半导体光催化降解乙烯的基本原理，选择两种窄带隙的半导体CoO、Bi2WO6来构建CoO-Bi2WO6的Z型结构并研究其光催化性能。利用两部步水热法成功制备了一系列超薄的Bi2WO6负载的CoO复合材料，并采用XRD、SEM、UV-Visible DRS对其结构、形貌和吸光特性进行了表征，然后系统研究了其在模拟太阳光下光催化降解乙烯的性能，4-COBWO样品的性能最佳，在90 min内可以完全光催化降解100 ppm的乙烯，同时具有良好的稳定性。该研究为实现高效光催化净化空气材料的设计与环境污染治理提供了理论研究基础与借鉴。
Abstract: Photocatalytic oxidation of ethylene under sunshine continues to be a challenge at the frontier of chemistry. Based on the previous research and the basic principle of semiconductor photocatalytic degradation of ethylene, in this study, CoO-Bi2WO6 composite semiconductors with Z-scheme configuration were fabricated by two-step hydrothermal method. The structure, morphology and absorptivity of the samples were characterized by XRD, UV-Visible diffusive-reflectance spectra (DRS), SEM. Their performances on photocatalytic degradation of ethylene under simulated sunlight illumination were investigated. The highest activity for C2H4 photo degradation was obtained on 4-COBWO. C2H4 was completely decomposed within only 90 min. Moreover, stable C2H4 photo-oxidationactivity could be obtained. From the point of view of the material design perspective and the application in the field of environmental pollutant remediation, the present research will provide potential value for further study on the removal of C2H4.
文章引用：姚慧娟, 苏扬航, 韩亚翔, 陈绪兴, 黄忠兵, 高云, 李荣. CoO-Bi2WO6Z型异质结的构建及其光催化降解C2H4性能研究[J]. 纳米技术, 2020, 10(2): 7-15. https://doi.org/10.12677/NAT.2020.102002

参考文献

[1] Saltveit, M.E. (1999) Effect of Ethylene on Quality of Fresh Fruits and Vegetables. Postharvest Biology and Technology, 15, 279-292. [Google Scholar] [CrossRef] 
[2] Chaves, A.L.S. and Mello-Farias, P.C. (2006) Ethylene and Fruit Ripening: From Illumination Gas to the Control of Gene Expression, More than a Century of Discoveries. Genetics and Molecular Biology, 29, 508-515. [Google Scholar] [CrossRef] 
[3] Jiang, C., Hara, K. and Fukuoka, A. (2013) Low-Temperature Oxidation of Ethylene over Platinum Nanoparticles Supported on Mesoporous Silica. Angewandte Chemie International Edition, 52, 6265-6268. [Google Scholar] [CrossRef] [PubMed]
[4] 陈绪兴. 空气中典型小分子HC化合物的室温催化降解研究[D]: [博士学位论文]. 武汉: 华中师范大学, 2017.
[5] Kader, A.A. (2003) A Perspective on Postharvest Horticulture (1978-2003). HortScience, 38, 1004-1008. [Google Scholar] [CrossRef] 
[6] Ekman, J.H., Golding, J.B. and McGlasson, W.B. (2005) Innovation in Cold Storage Technologies. Stewart Postharvest Review, 1, 1-14. [Google Scholar] [CrossRef] 
[7] Elsgaard, L. (1998) Ethylene Removal by a Biofilter with Immobilized Bacteria. Applied and Environmental Microbiology, 64, 4168-4173. [Google Scholar] [CrossRef] 
[8] Mo, J., Zhang, Y., Xu, Q., et al. (2009) Photocatalytic Purification of Volatile Organic Compounds in Indoor Air: A Literature Review. Atmospheric Environment, 43, 2229-2246. [Google Scholar] [CrossRef] 
[9] Ahn, H.G., Choi, B.M. and Lee, D.J. (2006) Complete Oxidation of Ethylene over Supported Gold Nanoparticle Catalysts. Journal of Nanoscience and Nanotechnology, 6, 3599-3603. [Google Scholar] [CrossRef] [PubMed]
[10] Xue, W.J., Wang, Y.F., Li, P., et al. (2011) Morphology Effects of Co3O4 on the Catalytic Activity of Au/Co3O4 Catalysts for Complete Oxidation of Trace Ethylene. Catalysis Communications, 12, 1265-1268. [Google Scholar] [CrossRef] 
[11] Pan, X.Y., Chen, X.X. and Yi, Z.G. (2016) Defective, Porous TiO2 Nanosheets with Pt Decoration as an Efficient Photocatalyst for Ethylene Oxidation Synthesized by a C3N4 Templating Method. ACS Applied Materials & Interfaces, 8, 10104-10108. [Google Scholar] [CrossRef] [PubMed]
[12] Westrich, T.A., Dahlberg, K.A., Kaviany, M., et al. (2011) High-Temperature Photocatalytic Ethylene Oxidation over TiO2. The Journal of Physical Chemistry C, 115, 16537-16543. [Google Scholar] [CrossRef] 
[13] Wang, X., Yu, J.C., Ho, C., et al. (2005) Photocatalytic Activity of a Hierarchically Macro/Mesoporoustitania. Langmuir, 21, 2552-2559. [Google Scholar] [CrossRef] [PubMed]
[14] Chen, X.X., Huang, X.T. and Yi, Z.G. (2014) Enhanced Ethylene Photodegradation Performance of g-C3N4-Ag3PO4 Composites with Direct Z-Scheme Configuration. Chemistry A European Journal, 20, 17590-17596. [Google Scholar] [CrossRef] [PubMed]
[15] Chen, X.X., Li, R., Pan, X.Y., Huang, X.T. and Yi, Z.G. (2017) Fabrication of In2O3-Ag-Ag3PO4 Composites with Z-Scheme Configuration for Photocatalytic Ethylene Degradation under Visible Light Irradiation. Chemical Engineering Journal, 320, 644-652. [Google Scholar] [CrossRef] 
[16] Zhou, Y., Zhang, Y., Lin, M., Long, J., Zhang, Z., Lin, H., Wu, Jeffery, C. and Wang, X. (2015) Monolayered Bi2WO6 Nanosheets Mimicking Heterojunction Interface with Open Surfaces for Photocatalysis. Nature Communications, 6, Article No. 8340. [Google Scholar] [CrossRef] [PubMed]
[17] Shi, W., Guo, F., Wang, H., Han, M., Li, H., Yuan, S., Huang, H., Liu, Y. and Kang, Z. (2017) Carbon Dots Decorated the Exposing High-Reactive (111) Facets CoO Octahedrons with Enhanced Photocatalytic Activity and Stability for Tetracycline Degradation under Visible Light Irradiation. Applied Catalysis B: Environmental, 219, 36-44. [Google Scholar] [CrossRef] 

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