Photocatalytic CO2 reduction over platinum modified hexagonal tungsten oxide: Effects of platinum on forward and back reactions

doi:10.1016/j.apcatb.2019.118331

SIC OpenIR

	Photocatalytic CO2 reduction over platinum modified hexagonal tungsten oxide: Effects of platinum on forward and back reactions
	Wang, HP; Zhang, L; Zhou, YY; Qiao, SM; Liu, XC; Wang, WZ
	2020-04-01
Source Publication	APPLIED CATALYSIS B-ENVIRONMENTAL
ISSN	0926-3373
Subtype	Article
Abstract	Back reaction is an important factor hindering the efficiency of photocatalytic reaction in suspension system. Pt is an excellent cocatalyst that is widely used in photocatalytic CO2 reduction, however, its effects on the forward and back reactions have not been clearly clarified. Here, Pt modified hexagonal tungsten oxide (h-WO3) is prepared and the role of Pt is investigated based on the performance of CO2 reduction and its back reactions behavior. Appropriate amount of Pt modification proves not only to improve charge separation and transfer efficiency, but also to enhance CO2 adsorption and activation ability. Therefore, Pt modified h-WO3 promotes forward reactions of photocatalytic CO2 reduction to CO and CH4. Furthermore, the back reactions of CO* and CH4 oxidation to CO2 are confirmed and accelerated with excess Pt modified on h-WPO3, which limit the further improvement of CO2 reduction performance. The enhanced CO adsorption strength and electronic localization with excess Pt modification may contribute to the accelerated back reactions.
DOI	10.1016/j.apcatb.2019.118331
WOS Keyword	CARBON-DIOXIDE ; HYDROGEN EVOLUTION ; TIO2 ; WO3 ; PHOTOREDUCTION ; CHALLENGES ; CATALYSTS ; METHANE ; CH4 ; OPPORTUNITIES
Language	英语
WOS Research Area	Chemistry ; Engineering
Publisher	ELSEVIER
Citation statistics	Cited Times:3[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/28200
Collection	中国科学院上海硅酸盐研究所
Recommended Citation GB/T 7714	Wang, HP,Zhang, L,Zhou, YY,et al. Photocatalytic CO2 reduction over platinum modified hexagonal tungsten oxide: Effects of platinum on forward and back reactions[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2020.
APA	Wang, HP,Zhang, L,Zhou, YY,Qiao, SM,Liu, XC,&Wang, WZ.(2020).Photocatalytic CO2 reduction over platinum modified hexagonal tungsten oxide: Effects of platinum on forward and back reactions.APPLIED CATALYSIS B-ENVIRONMENTAL.
MLA	Wang, HP,et al."Photocatalytic CO2 reduction over platinum modified hexagonal tungsten oxide: Effects of platinum on forward and back reactions".APPLIED CATALYSIS B-ENVIRONMENTAL (2020).

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