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Molecular-level understanding of the deactivation pathways during methanol photo-reforming on Pt-decorated TiO2
Huang, HT; Feng, JY; Zhang, S; Zhang, HN; Wang, X; Yu, T; Chen, CC; Yi, ZG; Ye, JH; Li, ZS; Zou, ZG
2020-09-05
Source PublicationAPPLIED CATALYSIS B-ENVIRONMENTAL
ISSN0926-3373
SubtypeArticle
AbstractThe methanol photo-reforming offers an environmentally friendly approach for hydrogen production. However, the widely studied catalyst for this reaction, Pt loaded titanium dioxide (Pt/P25), is found to suffer from the deactivation problem. Here, we employed various techniques including in situ spectroscopy characterization to probe the underlying mechanism. The formed intermediates formaldehyde and formic acid result in the decreased activity of hydrogen production over Pt/P25. Formic acid harms the Pt co-catalyst, whereas formaldehyde can inhibit both the Pt co-catalyst and P25 photocatalyst and plays a major role in the deteriorative effect on Pt/P25. In addition, rutile in P25 is identified to be the bottleneck against the poisoning of the reaction intermediate. A deactivation mechanism is developed, which helps to troubleshoot the deactivation problem; for example, a strategy based on the chemical potential difference applied to the deactivated photocatalyst enables it to recover similar to 80 % of its original hydrogen production activity.
DOI10.1016/j.apcatb.2020.118980
WOS KeywordPHOTOCATALYTIC HYDROGEN-PRODUCTION ; TITANIUM-DIOXIDE ; PLATINIZED TIO2 ; WATER ; METAL ; EFFICIENCY ; PT/TIO2 ; FORMALDEHYDE ; OXIDATION ; EVOLUTION
Language英语
WOS Research AreaChemistry ; Engineering
PublisherELSEVIER
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27770
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Huang, HT,Feng, JY,Zhang, S,et al. Molecular-level understanding of the deactivation pathways during methanol photo-reforming on Pt-decorated TiO2[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2020.
APA Huang, HT.,Feng, JY.,Zhang, S.,Zhang, HN.,Wang, X.,...&Zou, ZG.(2020).Molecular-level understanding of the deactivation pathways during methanol photo-reforming on Pt-decorated TiO2.APPLIED CATALYSIS B-ENVIRONMENTAL.
MLA Huang, HT,et al."Molecular-level understanding of the deactivation pathways during methanol photo-reforming on Pt-decorated TiO2".APPLIED CATALYSIS B-ENVIRONMENTAL (2020).
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