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Synthesis of BaTaO2N oxynitride from Ba-rich oxide precursor for construction of visible-light-driven Z-scheme overall water splitting
Dong, Beibei1,2; Qi, Yu1,2; Cui, Junyan1,3; Liu, Baodan4; Xiong, Fengqiang1; Jiang, Xin; Li, Zheng1,2; Xiao, Yejun1,2; Zhang, Fuxiang1; Li, Can1
Source PublicationDALTON TRANSACTIONS
2017-08-28
ISSN1477-9226
DOI10.1039/c7dt00854f
Volume46Issue:32Pages:10707-10713
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Inorganic & Nuclear
WOS Research AreaChemistry
WOS KeywordHYDROGEN EVOLUTION ; SOLID-SOLUTION ; WIDE-RANGE ; PHOTOCATALYST ; OXIDATION ; SEMICONDUCTORS ; FABRICATION ; SR ; CA
AbstractBarium tantalum oxynitride (BaTaO2N) with an absorption edge of ca. 660 nm is one of the most promising photocatalysts for solar water splitting, and is usually synthesized by nitriding a mixture of Ba and Tacontaining compounds with a Ba/Ta molar ratio of unity under ammonia flow at high temperature, usually causing a high density of defect sites. Herein, we introduce a novel synthesis method for BaTaO2N (BTON) by employing Ba-rich LiBa4Ta3O12, prepared by a flux method, as a precursor of nitridation. As a comparison, BaTaOx was prepared by conventional solid state reaction and used as the precursor. The as-nitrided samples were correspondingly denoted as BTON-Flux and BTON-SSR. It was found that well-crystallized BTON oxynitride can be similarly obtained by both methods, but the BTON-Flux sample exhibits significantly decreased defect density and enhanced surface area relative to the BTON-SSR sample. As a result of their structural differences, the photocatalytic water splitting performance of the BTON-Flux sample, regardless of the H-2-evolving half reaction in the presence of methanol or Z-scheme overall water splitting, is much better than that of BTON-SSR. This study may open up a novel strategy for preparing oxynitride photocatalyst with decreased defect density for the promotion of solar water splitting.
Language英语
WOS IDWOS:000408696500026
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/168315
Collection中国科学院大连化学物理研究所
Corresponding AuthorZhang, Fuxiang; Li, Can
Affiliation1.Chinese Acad Sci, Dalian Natl Lab Clean Energy, State Key Lab Catalysis, iChEM,Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Jilin Univ, Coll Chem, Key Lab Surface & Interface Chem Jilin Prov, Changchun 130021, Jilin, Peoples R China
4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci SYNL, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Dong, Beibei,Qi, Yu,Cui, Junyan,et al. Synthesis of BaTaO2N oxynitride from Ba-rich oxide precursor for construction of visible-light-driven Z-scheme overall water splitting[J]. DALTON TRANSACTIONS,2017,46(32):10707-10713.
APA Dong, Beibei.,Qi, Yu.,Cui, Junyan.,Liu, Baodan.,Xiong, Fengqiang.,...&Li, Can.(2017).Synthesis of BaTaO2N oxynitride from Ba-rich oxide precursor for construction of visible-light-driven Z-scheme overall water splitting.DALTON TRANSACTIONS,46(32),10707-10713.
MLA Dong, Beibei,et al."Synthesis of BaTaO2N oxynitride from Ba-rich oxide precursor for construction of visible-light-driven Z-scheme overall water splitting".DALTON TRANSACTIONS 46.32(2017):10707-10713.
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