Volume 8 Issue 1
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Jianjun Chen, Rongqiang Yin, Gongda Chen, Junyu Lang, Xiaoping Chen, Xuefeng Chu, Junhua Li. Selective capture of Tl2O from flue gas with formation of p-n junction on V2O5-WO3/TiO2 catalyst under working conditions. Green Energy&Environment, 2023, 8(1): 4-9. doi: 10.1016/j.gee.2021.12.001
Citation: Jianjun Chen, Rongqiang Yin, Gongda Chen, Junyu Lang, Xiaoping Chen, Xuefeng Chu, Junhua Li. Selective capture of Tl2O from flue gas with formation of p-n junction on V2O5-WO3/TiO2 catalyst under working conditions. Green Energy&Environment, 2023, 8(1): 4-9. doi: 10.1016/j.gee.2021.12.001
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Selective capture of Tl2O from flue gas with formation of p-n junction on V2O5-WO3/TiO2 catalyst under working conditions

doi: 10.1016/j.gee.2021.12.001

  • a. State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China;

  • b. School of Physical Science and Technology, Shanghai Tech University, Shanghai, China;

  • c. Key Laboratory of Architectural Cold Climate Energy Management, Ministry of Education, Jilin Jianzhu University, Changchun, China;

  • d. Guangdong Energy Group Science and Technology Research Institute Co., Ltd., Guangdong, China

Funds:

This work was financially supported by the National Natural Science Foundation of China (21936005, 52070114 and 21876093) and Tsinghua-Foshan Innovation Special Fund (TFISF).

  • Received date 12 October 2021, Accepted date 15 December 2021, RevRecd date 28 November 2021, Available online 03 February 2023, Publish date 05 January 2022,
    Abstract
  • Thallium (Tl) compounds, highly toxic to biology, are usually released into flue gas during fossil/minerals combustion, and further distributed in water and soil. In this work, we fundamentally investigated the capture of gaseous Tl2O by industrial V2O5-WO3/TiO2 catalyst under working condition in Tl-containing flue gas. Experimental and theoretical results indicated that the Tl2O has significant electron-feeding capacity and easily donate electron to unoccupied orbitals of TiO2, leading to dismutation of Ti 2p and inartificial formation of p-n junction on TiO2 surface, which prompted Tl2O selectively interacted with TiO2 in flue gas. Herein, we proposed and verified an effective way to capture gaseous Tl2O, which offered almost the best choice to eliminate Tl emission from flue gas and expanded the function of the TiO2-based catalyst. The formation of p-n junction on commercial V2O5-WO3/TiO2 catalyst under working condition was revealed for the first time, which can be a valuable reference for both heterocatalysis and electro/photocatalysis.

     

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