| Title: | Nature-inspired CaCO(3) loading TiO(2) composites for efficient and durable photocatalytic mineralization of gaseous toluene |
| Author(s): | Cui W; Li J; Chen L; Dong X; Wang H; Sheng J; Sun Y; Zhou Y; Dong F; |
| Address: | "The Center of New Energy Materials and Technology, School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, China; Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China. Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China. School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu 611731, China. The Center of New Energy Materials and Technology, School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, China. The Center of New Energy Materials and Technology, School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, China; Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China. Electronic address: dfctbu@126.com" |
| DOI: | 10.1016/j.scib.2020.05.024 |
| ISSN/ISBN: | 2095-9281 (Electronic) 2095-9273 (Linking) |
| Abstract: | "The accumulation of intermediates or final products on TiO(2) during photocatalytic volatile organic compounds (VOCs) degradation is typically neglected, despite the fact that it could result in the block of active sites and the deactivation of photocatalysts. Inspired from the natural formation of stalactite (CaCO(3) + H(2)O + CO(2) <--> Ca(HCO(3))(2)), we fabricated CaCO(3) loading TiO(2) composites (CCT21) to realize the spontaneously transfer of accumulated final products (CO(2) and H(2)O). Efficient and durable performance for gaseous toluene removal has been demonstrated and the cost of photocatalyst is greatly reduced by the comparison of specific activity. The introduction of CaCO(3) induces the interaction between TiO(2) and CaCO(3) to stimulate abundant activated electrons for the improvement on the adsorption and activation of reactants and the transformation of photogenerated carriers, and most importantly, facilitates the transfer of final products to release active sites and thus suppress the deactivation of TiO(2). Furthermore, we develop a facile method to immobilize CCT21 powder on flexible support, which greatly reduces the loss of photocatalysts and correspondingly enables the practical application of TiO(2)-based products. Therefore, this work presents a novel nature-inspired strategy to address the challenge of deactivation, and advances the development of photocatalytic technology for environmental remediation" |
| Keywords: | Immobilization Photocatalysis Reaction mechanism Toluene VOCs decomposition; |
| Notes: | "PubMed-not-MEDLINECui, Wen Li, Jieyuan Chen, Lvcun Dong, Xing'an Wang, Hong Sheng, Jianping Sun, Yanjuan Zhou, Ying Dong, Fan eng Netherlands 2020/10/15 Sci Bull (Beijing). 2020 Oct 15; 65(19):1626-1634. doi: 10.1016/j.scib.2020.05.024. Epub 2020 May 28" |
