Citation: Wangchen Huo, Tong Cao, Weina Xu, Ziyang Guo, Xiaoying Liu, Hong-Chang Yao, Yuxin Zhang, Fan Dong. Facile construction of Bi₂Mo₃O₁₂@Bi₂O₂CO₃ heterojunctions for enhanced photocatalytic efficiency toward NO removal and study of the conversion process[J]. Chinese Journal of Catalysis, ;2020, 41(2): 268-275. doi: S1872-2067(19)63460-1 shu

Facile construction of Bi₂Mo₃O₁₂@Bi₂O₂CO₃ heterojunctions for enhanced photocatalytic efficiency toward NO removal and study of the conversion process

a State Key Laboratory of Mechanical Transmissions, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China;
b Research Center for Environmental Science & Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, Sichuang, China;
c Department of Physics, Chongqing University, Chongqing 401331, China;
d Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China;
e College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, Henan, China

Received Date: 14 May 2019
Revised Date: 5 July 2019

Fund Project: This work was supported by the Fundamental Research Funds for the Central Universities (2018CDYJSY0055), the National Natural Science Foundation of China (21576034), Joint Funds of the National Natural Science Foundation of China-Guangdong (U1801254), the project funded by Chongqing Special Postdoctoral Science Foundation (XmT2018043), Technological projects of Chongqing Municipal Education Commission (KJZDK201800801), and the Innovative Research Team of Chongqing (CXTDG201602014).

Charge separation and transformation are some of the key requirements for high-efficiency photocatalysis. The photocatalytic reaction mechanism provides a guideline for the development and commercialization of high-efficiency photocatalysts. In this study, we designed and favorably synthesized BMO@BOC heterojunctions via a facile solvothermal route and applied the heat treatment method for application in high-efficiency photocatalytic NO removal. More importantly, both continuous stream and intermittent stream methods with in situ diffuse reflectance infrared Fourier transform spectroscopy were applied to intuitively and dynamically investigate the adsorption process and oxidation process of NO removal over the photocatalyst surface. The intermediate products (NO^-, NO₂^-, and NO₂) were explicitly detected in both the adsorption process and oxidation process, whilst the final product (NO₃^-) appeared only in the oxidation process, owing to the separation, migration, and conversion of photoinduced electron-hole pairs.
- Heterojunction,
- NO removal,
- Photocatalysis,
- In situ DRIFTS,
- Reaction process
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Facile construction of Bi₂Mo₃O₁₂@Bi₂O₂CO₃ heterojunctions for enhanced photocatalytic efficiency toward NO removal and study of the conversion process