CAS OpenIR
Oxygen vacancies-enriched Ta-doped Bi2WO6 with Pt as cocatalyst for boosting the dehydrogenation of benzyl alcohol in water
Shen, Zewen1; Hu, Yezi1; Pan, Qiushi2; Huang, Chunhua3,4; Zhu, Benzhan3,4; Xia, Wei2; Wang, Huihui1; Yue, Junrong5; Muhler, Martin2; Zhao, Guixia1,2; Wang, Xiangke1; Huang, Xiubing6
2022
Source PublicationAPPLIED SURFACE SCIENCE
ISSN0169-4332
Volume571Pages:8
AbstractSelective photocatalytic oxidation of alcohols into value-added aldehydes or ketones is a promising alternative for alcohol oxidation concerning the mild reaction conditions and the controllable selectivity. To increase the activity, defective Bi2WO6 with abundant oxygen vacancies (OVs) was synthesized via substitution of W by Ta. The resulting Ta-doped Bi2WO6 loaded with Pt nanoparticles as co-catalyst efficiently converted aromatic and aliphatic alcohols into the corresponding carbonyl compounds with high selectivity (>99%) in aqueous solution under visible-light irradiation and anaerobic conditions, with equivalent H-2 as a coupled product. The optimal amount of benzyl alcohol converted by the Ta-doped catalyst was two times higher than that of the undoped catalyst. Surface OVs were found to favor the dissociative adsorption of the alcohols and to prolong the life time of the charge carriers. More importantly, isotopic labelling experiments confirmed that over Pt-loaded pristine undoped Bi2WO6, the coupled H-2 product results from water reduction, while over Pt-loaded Ta-doped Bi2WO6, the produced H-2 originates from benzyl alcohol, implying that benzyl alcohol can be photo-oxidized via a complete dehydrogenation pathway. Thus, enriched surface OVs in photocatalysts can activate alpha-C-H bonds in alcohols, boosting the photocatalytic oxidation performance.
KeywordOxygen vacancies alpha-C-H bonds Bi2WO6 Photocatalysis Anaerobic alcohol oxidation
DOI10.1016/j.apsusc.2021.151370
Language英语
WOS KeywordPHOTOCATALYTIC ANAEROBIC OXIDATION ; VISIBLE-LIGHT ; SELECTIVE OXIDATION ; TITANIUM-DIOXIDE ; CARBONYL-COMPOUNDS ; AROMATIC ALCOHOLS ; AQUEOUS-SOLUTION ; CO2 REDUCTION ; DRIVEN ; SOLVENT
Funding ProjectNational Natural Science Foundation of China[21976054] ; Fundamental Research Funds for the Central Universities[2020MS036]
WOS Research AreaChemistry ; Materials Science ; Physics
WOS SubjectChemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter
Funding OrganizationNational Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities
WOS IDWOS:000728672600003
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/51391
Collection中国科学院过程工程研究所
Corresponding AuthorZhao, Guixia; Wang, Xiangke; Huang, Xiubing
Affiliation1.North China Elect Power Univ, Coll Environm Sci & Engn, Beijing 102206, Peoples R China
2.Ruhr Univ Bochum, Fac Chem & Biochem, Lab Ind Chem, Univ Str 150, D-44780 Bochum, Germany
3.Chinese Acad Sci, Res Ctr EcoEnvironmental Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multi Phase Complex Syst, Beijing 100190, Peoples R China
6.Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing Key Lab Funct Mat Mol & Struct Construct, Beijing Adv Innovat Ctr Mat Genome Engn, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Shen, Zewen,Hu, Yezi,Pan, Qiushi,et al. Oxygen vacancies-enriched Ta-doped Bi2WO6 with Pt as cocatalyst for boosting the dehydrogenation of benzyl alcohol in water[J]. APPLIED SURFACE SCIENCE,2022,571:8.
APA Shen, Zewen.,Hu, Yezi.,Pan, Qiushi.,Huang, Chunhua.,Zhu, Benzhan.,...&Huang, Xiubing.(2022).Oxygen vacancies-enriched Ta-doped Bi2WO6 with Pt as cocatalyst for boosting the dehydrogenation of benzyl alcohol in water.APPLIED SURFACE SCIENCE,571,8.
MLA Shen, Zewen,et al."Oxygen vacancies-enriched Ta-doped Bi2WO6 with Pt as cocatalyst for boosting the dehydrogenation of benzyl alcohol in water".APPLIED SURFACE SCIENCE 571(2022):8.
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