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Surface Lattice Oxygen Activation on Sr2Sb2O7 Enhances the Photocatalytic Mineralization of Toluene: from Reactant Activation, Intermediate Conversion to Product Desorption

  • Lvcun Chen
    Lvcun Chen
    The Center of New Energy Materials and Technology, School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, P. R. China
    Yangtze Delta Region Institute (Huzhou), & Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Huzhou 313001, China
    More by Lvcun Chen
  • Peng Chen
    Peng Chen
    The Center of New Energy Materials and Technology, School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, P. R. China
    Yangtze Delta Region Institute (Huzhou), & Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Huzhou 313001, China
    More by Peng Chen
  • Hong Wang
    Hong Wang
    Yangtze Delta Region Institute (Huzhou), & Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Huzhou 313001, China
    More by Hong Wang
  • Wen Cui
    Wen Cui
    The Center of New Energy Materials and Technology, School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, P. R. China
    Yangtze Delta Region Institute (Huzhou), & Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Huzhou 313001, China
    More by Wen Cui
  • Jianping Sheng
    Jianping Sheng
    Yangtze Delta Region Institute (Huzhou), & Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Huzhou 313001, China
  • Jieyuan Li
    Jieyuan Li
    Yangtze Delta Region Institute (Huzhou), & Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Huzhou 313001, China
    More by Jieyuan Li
  • Yuxin Zhang
    Yuxin Zhang
    College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
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  • Ying Zhou*
    Ying Zhou
    The Center of New Energy Materials and Technology, School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, P. R. China
    *Email: [email protected]
    More by Ying Zhou
  • , and 
  • Fan Dong*
    Fan Dong
    The Center of New Energy Materials and Technology, School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, P. R. China
    Yangtze Delta Region Institute (Huzhou), & Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Huzhou 313001, China
    State Centre for International Cooperation on Designer Low-carbon and Environmental Materials (CDLCEM), School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
    *Email: [email protected], [email protected]
    More by Fan Dong
Cite this: ACS Appl. Mater. Interfaces 2021, 13, 4, 5153–5164
Publication Date (Web):January 21, 2021
https://doi.org/10.1021/acsami.0c20996
Copyright © 2021 American Chemical Society
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Abstract

Transition-metal oxide photocatalysis has attracted increasing attention in environmental remediation and solar energy conversion. Surface lattice oxygen is the key active site on the metal oxide, but its role and activation mechanism in the photocatalytic VOC mineralization are still unclear. In this work, we have demonstrated that Sr2Sb2O7 exhibits an excellent photocatalytic activity and stability compared to TiO2 (P25) in gaseous toluene mineralization because the lattice oxygen on Sr2Sb2O7 can be activated efficiently. The lattice oxygen of Sr2Sb2O7 promotes the adsorption and activation of O2 and H2O molecules and enhances the production of O2 and OH radicals, as confirmed by the electron spin resonance and DFT calculations. The in situ diffuse reflectance infrared Fourier transform spectroscopy spectra are applied to dynamically monitor the intermediate activation and selective conversion. Combined with DFT calculation, the role and the mechanism of lattice oxygen in photocatalysis have been revealed. Owing to the promoted surface lattice oxygen, the selectivity for benzoic acid formation is enhanced and final product desorption is promoted, which could largely advance the ring opening and mineralization of toluene. This work reveals the origin of lattice oxygen activation and the role for efficient VOC degradation at the atomic scale.

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The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acsami.0c20996.

  • Schematic illustrations for the continuous photocatalytic reactor, in situ DRIFTS reactors, SEM image of prepared Sr2Sb2O7 at higher magnification, PL spectra of P25 and Sr2Sb2O7, full spectrum of in situ DRIFTS with/without O2 and H2O, bond lengths of Ti–O and Sb–O, and assignments of the DRIFTS bands (PDF)

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Cited By


This article is cited by 6 publications.

  1. Wenjun Ma, Xing'an Dong, Yun Wang, Wenjie He, Wendong Zhang, Yi Liang, Yi Wang, Wensheng Fu, Jiazhen Liao, Fan Dong. Highly enhanced photocatalytic toluene degradation and in situ FT-IR investigation on designed Sn-doped BiOCl nanosheets. Applied Surface Science 2022, 578 , 152002. https://doi.org/10.1016/j.apsusc.2021.152002
  2. Zhengmao Cao, Wu Wang, Hao Ma, Lei Xiao, Jieyuan Li, Yanjuan Sun, Jianping Sheng, Fan Dong. Porous Mn-doped Co3O4 nanosheets: Gas sensing performance and interfacial mechanism investigation with In situ DRIFTS. Sensors and Actuators B: Chemical 2022, 353 , 131155. https://doi.org/10.1016/j.snb.2021.131155
  3. Linxuan Xie, Ting Du, Jing Wang, Yiyue Ma, Yongsheng Ni, Zhaoli Liu, Liang Zhang, Chengyuan Yang, Jianlong Wang. Recent advances on heterojunction-based photocatalysts for the degradation of persistent organic pollutants. Chemical Engineering Journal 2021, 426 , 130617. https://doi.org/10.1016/j.cej.2021.130617
  4. Ruimin Chen, Jieyuan Li, Hong Wang, Peng Chen, Xing'an Dong, Yanjuan Sun, Ying Zhou, Fan Dong. Photocatalytic reaction mechanisms at a gas–solid interface for typical air pollutant decomposition. Journal of Materials Chemistry A 2021, 9 (36) , 20184-20210. https://doi.org/10.1039/D1TA03705F
  5. Phuoc Loc Truong, Alemayehu Kidanemariam, Juhyun Park. A critical innovation of photocatalytic degradation for toxic chemicals and pathogens in air. Journal of Industrial and Engineering Chemistry 2021, 100 , 19-39. https://doi.org/10.1016/j.jiec.2021.05.012
  6. Lei Xiao, Peng Chen, Weiping Yang, Xiaoli Zhao, Fan Dong. Photocatalytic reaction mechanisms at the gas–solid interface for environmental and energy applications. Catalysis Science & Technology 2021, 11 https://doi.org/10.1039/D1CY01776D