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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 PublicationAPPLIED CATALYSIS B-ENVIRONMENTAL
ISSN0926-3373
SubtypeArticle
AbstractBack 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.
DOI10.1016/j.apcatb.2019.118331
WOS KeywordCARBON-DIOXIDE ; HYDROGEN EVOLUTION ; TIO2 ; WO3 ; PHOTOREDUCTION ; CHALLENGES ; CATALYSTS ; METHANE ; CH4 ; OPPORTUNITIES
Language英语
WOS Research AreaChemistry ; Engineering
PublisherELSEVIER
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://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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