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题名: Achievement of visible-light-driven Z-scheme overall water splitting using barium-modified Ta3N5 as a H-2-evolving photocatalyst
作者: Qi, Yu1, 2;  Chen, Shanshan1;  Li, Mingrun1;  Ding, Qian1, 2;  Li, Zheng1, 2;  Cui, Junyan1, 3;  Dong, Beibei1, 2;  Zhang, Fuxiang1;  Li, Can1
刊名: CHEMICAL SCIENCE
发表日期: 2017
DOI: 10.1039/c6sc02750d
卷: 8, 期:1, 页:437-443
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: Ta3N5 is one of the most promising photocatalyst candidates for solar water splitting, but it still remains challenging to achieve overall water splitting via Ta3N5-based photocatalysts regardless of whether it uses a one step or two step method. Here we will address the relatively poor photocatalytic proton reduction of Ta3N5 with an effort for the promotion of charge separation via barium modification. Onepot nitridation of barium nitrate-impregnated Ta2O5 precursor was adopted here for the synthesis of Ta3N5 accompanied with the creation of a Ta3N5/BaTaO2N heterostructure and surface passivation. Due to the synergetic effect of the improved interfacial charge separation and the decreased defect density, the photocatalytic H-2 evolution rate of barium-modified Ta3N5 is effectively promoted. Encouraged by this, a visible-light-driven Z-scheme overall water splitting system was successfully constructed by using the barium-modified Ta3N5 as a H-2-evolving photocatalyst, together with a PtOx/WO3 and IO3-/I- pair as an O-2-evolving photocatalyst and a redox mediator, respectively.
关键词[WOS]: HYDROGEN-PRODUCTION ;  CARBON NITRIDE ;  SOLAR ;  OXIDATION ;  PHOTOANODE ;  IRRADIATION ;  REDUCTION ;  EVOLUTION ;  NANOPARTICLES ;  PERFORMANCE
语种: 英语
WOS记录号: WOS:000391454500050
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/151876
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.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, Peoples R China

Recommended Citation:
Qi, Yu,Chen, Shanshan,Li, Mingrun,et al. Achievement of visible-light-driven Z-scheme overall water splitting using barium-modified Ta3N5 as a H-2-evolving photocatalyst[J]. CHEMICAL SCIENCE,2017,8(1):437-443.
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