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CdS/Au/Ti/Pb(Mg1/3Nb2/3)(0.7)Ti0.3O3 photocatalysts and biphotoelectrodes with ferroelectric polarization in single domain for efficient water splitting

文献类型：期刊论文

作者Song, Zhimin3,4; Hong, Bin4; Zhu, Xiaodi4; Zhang, Fan4; Li, Shikuo3; Ding, Jianjun2; Jiang, Xiaoming1; Bao, Jun4; Gao, Chen4; Sun, Song3,4
刊名APPLIED CATALYSIS B-ENVIRONMENTAL
出版日期2018-12-15
卷号238页码:248-254
关键词Photocatalysis Ferroelectric polarization CdS Water splitting Pb(Mg1/3Nb2/3)(0.7)Ti0.3O3
ISSN号0926-3373
DOI10.1016/j.apcatb.2018.07.033
通讯作者Bao, Jun(baoj@ustc.edu.cn) ; Sun, Song(suns@ustc.edu.cn)
英文摘要The construction of efficient photocatalysts for water splitting is still challenging, mainly due to the unexpected recombination of photogenerated carriers. Ferroelectric polarization-induced charge separation of photo catalysts has been demonstrated as an effective method for improving photocatalytic performance. However, ferroelectric domains in existing works are random before polarization-switching, which results in lower polarization electric field intensity and limits the charge separation efficiency. Here, we report that the spontaneous ferroelectric polarization in a single domain for efficient charge separation over a representative semiconductor CdS, in the form of CdS/Au/Ti/Pb(Mg1/3Nb2/3)(0.7)Ti0.3O3 (CdS/Au/Ti/PMN-PT), for water splitting in absence of any cocatalyst or external voltage. The photocurrent value of the positive polarized CdS/Au/Ti/PMN-PT yields 1.70 mA.cm(-2), which is about 20 times higher than the value of the non-polarized sample. In addition, a biphotoelectrode cell composed of a positively and a negatively polarized CdS/Au/Ti/PMN-PT was constructed. A considerable solar-to-hydrogen conversion efficiency of 0.19% was achieved. It was found that the interfacial resistance and the surface reaction kinetics may be the main factors governing the photocatalytic performance. This work not only provides a strategy to promote charge separation but also develops a new biphotoelectrode cell capable of obtaining efficient solar water splitting.
WOS关键词SOLAR HYDROGEN-PRODUCTION ; VISIBLE-LIGHT ; CHARGE SEPARATION ; PHOTOELECTROCHEMICAL CELLS ; ENERGY-CONVERSION ; ELECTRIC-FIELDS ; H-2 GENERATION ; CDS ; SURFACE ; HETEROSTRUCTURES
资助项目National Key Research and Development Program of China[2016YFB0700205] ; National Natural Science Foundation of China[U1632273] ; National Natural Science Foundation of China[21673214] ; Foundation from Key Laboratory of Photovoltaic and Energy Conservation, CAS[PECL2018KF012] ; Hefei Center for Physical Science and Technology[2016FXZY002] ; Anhui Provincial Natural Science Foundation[17080885MB46]
WOS研究方向Chemistry ; Engineering
语种英语
WOS记录号WOS:000443666000025
出版者ELSEVIER SCIENCE BV
资助机构National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; 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源URL[http://ir.hfcas.ac.cn:8080/handle/334002/38588]  
专题合肥物质科学研究院_应用技术研究所
通讯作者Bao, Jun; Sun, Song
作者单位1.Chinese Acad Sci, Beijing Adv Sci & Innovat Ctr, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Appl Technol, Hefei Inst Phys Sci, Hefei 230031, Anhui, Peoples R China
3.Anhui Univ, Sch Chem & Chem Engn, Hefei 230601, Anhui, Peoples R China
4.Univ Sci & Technol China, Collaborat Innovat Ctr Chem Energy Mat, Natl Synchrotron Radiat Lab, Hefei 230029, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Song, Zhimin,Hong, Bin,Zhu, Xiaodi,et al. CdS/Au/Ti/Pb(Mg1/3Nb2/3)(0.7)Ti0.3O3 photocatalysts and biphotoelectrodes with ferroelectric polarization in single domain for efficient water splitting[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2018,238:248-254.
APA Song, Zhimin.,Hong, Bin.,Zhu, Xiaodi.,Zhang, Fan.,Li, Shikuo.,...&Sun, Song.(2018).CdS/Au/Ti/Pb(Mg1/3Nb2/3)(0.7)Ti0.3O3 photocatalysts and biphotoelectrodes with ferroelectric polarization in single domain for efficient water splitting.APPLIED CATALYSIS B-ENVIRONMENTAL,238,248-254.
MLA Song, Zhimin,et al."CdS/Au/Ti/Pb(Mg1/3Nb2/3)(0.7)Ti0.3O3 photocatalysts and biphotoelectrodes with ferroelectric polarization in single domain for efficient water splitting".APPLIED CATALYSIS B-ENVIRONMENTAL 238(2018):248-254.

入库方式： OAI收割

来源：合肥物质科学研究院

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