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Efficient Visible-Light-Driven Z-Scheme Overall Water Splitting Using a MgTa2O6-xNy/TaON Heterostructure Photocatalyst for H-2 Evolution
Chen, Shanshan1,2; Qi, Yu1,2; Hisatomi, Takashi3; Ding, Qian1,2; Asai, Tomohiro3; Li, Zheng1,2; Ma, Su Su Khine3; Zhang, Fuxiang1; Domen, Kazunari3; Li, Can1
KeywordHeterostructures Hydrogen Overall Water Splitting Oxynitrides Photocatalysis
Source PublicationANGEWANDTE CHEMIE-INTERNATIONAL EDITION
2015-07-13
DOI10.1002/anie.201502686
Volume54Issue:29Pages:8498-8501
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
WOS KeywordSHUTTLE REDOX MEDIATOR ; HYDROGEN EVOLUTION ; IRRADIATION ; OXIDATION ; O-2 ; SEMICONDUCTORS ; SPECTROSCOPY ; SEPARATION ; OXYNITRIDE ; REDUCTION
AbstractAn (oxy)nitride-based heterostructure for powdered Z-scheme overall water splitting is presented. Compared with the single MgTa2O6-xNy or TaON photocatalyst, a MgTa2O6-xNy/TaON heterostructure fabricated by a simple one-pot nitridation route was demonstrated to effectively suppress the recombination of carriers by efficient spatial charge separation and decreased defect density. By employing Pt-loaded MgTa2O6-xNy/TaON as a H-2-evolving photocatalyst, a Z-scheme overall water splitting system with an apparent quantum efficiency (AQE) of 6.8% at 420 nm was constructed (PtOx-WO3 and IO3- /I- pairs were used as an O-2-evolving photocatalyst and a redox mediator, respectively), the activity of which is circa 7 or 360 times of that using Pt-TaON or Pt-MgTa2O6-xNy as a H-2-evolving photocatalyst, respectively. To the best of our knowledge, this is the highest AQE among the powdered Z-scheme overall water splitting systems ever reported.
Language英语
WOS IDWOS:000358050300034
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/146401
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, State Key Lab Catalysis,iChEM, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Tokyo, Sch Engn, Dept Chem Syst Engn, Bunkyo Ku, Tokyo 1138656, Japan
Recommended Citation
GB/T 7714
Chen, Shanshan,Qi, Yu,Hisatomi, Takashi,et al. Efficient Visible-Light-Driven Z-Scheme Overall Water Splitting Using a MgTa2O6-xNy/TaON Heterostructure Photocatalyst for H-2 Evolution[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2015,54(29):8498-8501.
APA Chen, Shanshan.,Qi, Yu.,Hisatomi, Takashi.,Ding, Qian.,Asai, Tomohiro.,...&Li, Can.(2015).Efficient Visible-Light-Driven Z-Scheme Overall Water Splitting Using a MgTa2O6-xNy/TaON Heterostructure Photocatalyst for H-2 Evolution.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,54(29),8498-8501.
MLA Chen, Shanshan,et al."Efficient Visible-Light-Driven Z-Scheme Overall Water Splitting Using a MgTa2O6-xNy/TaON Heterostructure Photocatalyst for H-2 Evolution".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 54.29(2015):8498-8501.
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