气候变化领域集成服务门户(CCPortal): Nature-inspired CaCO3 loading TiO2 composites for efficient and durable photocatalytic mineralization of gaseous toluene

CCPortal

DOI	10.1016/j.scib.2020.05.024
	Nature-inspired CaCO3 loading TiO2 composites for efficient and durable photocatalytic mineralization of gaseous toluene
	Cui W.; Li J.; Chen L.; Dong X.; Wang H.; Sheng J.; Sun Y.; Zhou Y.; Dong F.
发表日期	2020
ISSN	20959273
起始页码	1626
结束页码	1634
卷号	65 期号:19
英文摘要	The accumulation of intermediates or final products on TiO2 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 (CaCO3 + H2O + CO2 ↔ Ca(HCO3)2), we fabricated CaCO3 loading TiO2 composites (CCT21) to realize the spontaneously transfer of accumulated final products (CO2 and H2O). 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 CaCO3 induces the interaction between TiO2 and CaCO3 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 TiO2. 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 TiO2-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. © 2020 Science China Press
关键词	Immobilization Photocatalysis Reaction mechanism Toluene VOCs decomposition
英文关键词	Biomimetics; Calcite; Calcium carbonate; Carbon dioxide; Environmental technology; Oxide minerals; Toluene; Volatile organic compounds; Environmental remediation; Flexible supports; Gaseous toluene; Natural formations; Photo-catalytic; Photocatalytic mineralizations; Photogenerated carriers; Specific activity; Titanium dioxide
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207017
作者单位	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; School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu, 611731, China
推荐引用方式 GB/T 7714	Cui W.,Li J.,Chen L.,et al. Nature-inspired CaCO3 loading TiO2 composites for efficient and durable photocatalytic mineralization of gaseous toluene[J],2020,65(19).
APA	Cui W..,Li J..,Chen L..,Dong X..,Wang H..,...&Dong F..(2020).Nature-inspired CaCO3 loading TiO2 composites for efficient and durable photocatalytic mineralization of gaseous toluene.Science Bulletin,65(19).
MLA	Cui W.,et al."Nature-inspired CaCO3 loading TiO2 composites for efficient and durable photocatalytic mineralization of gaseous toluene".Science Bulletin 65.19(2020).