Highly Conductive Cable-Like Bicomponent Titania Photoanode Approaching Limitation of Electron and Hole Collection

doi:10.1002/adfm.201803328

	Highly Conductive Cable-Like Bicomponent Titania Photoanode Approaching Limitation of Electron and Hole Collection
	Tian, Zhangliu 1; Wang, Dong ; Bu, Kejun 1; Lin, Jie 1; Zhang, Shaoning ; Zhao, Wei ; Qin, Peng ; Huang, Fuqiang 2
刊名	ADVANCED FUNCTIONAL MATERIALS
	2018
卷号	28 期号:36
关键词	conductive cable-like nanowires electron collection hole collection photoelectrochemical devices
ISSN号	1616-301X
DOI	10.1002/adfm.201803328
英文摘要	TiO2-based materials are cheap and stable choices for photoelectrochemical devices. However, the activity is still limited by the inefficient charge extraction. Here a highly conductive cable-like bicomponent titania photoanode, consisting of reduced anatase-coated TiO2-B nanowires, is proposed to simultaneously establish effective electron and hole transport channels separately, which meets the requirements of electronic dynamics for efficient water splitting. A synergistic effect of charge separation from the built-in electric field is demonstrated with this 1D TiO2-B/anatase heterojunction, in which a high electron collection efficiency of up to 97.1% at 0.6 V versus reversible hydrogen electrode is achieved. The efficient electron collection approaching the limitation is also attributed to the large electron conducting region in the photoanode. Moreover, the O-deficient amorphous layer is found to be more catalytic toward the oxygen evolution reaction through quantifying rate constants for charge recombination and charge transfer. It can reduce onset potential and suppress charge-carrier recombination simultaneously, prompting surface hole collection efficiency up to 95% at 0.6 V versus reversible hydrogen electrode.
学科主题	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000443375900024
资助机构	This work was financially supported by the National Key Research and Development Program of China (Grant no. 2016YFB0901600), the NSF of China (Grant no. 51502331), the STC of Shanghai (Grants no. 16JC1401700 and 17ZR1434400), the Key Research Program of Chinese Academy of Sciences (Grants no. QYZDJ-SSW-JSC013 and KGZD-EW-T06), and CAS pioneer hundred talents program. ; This work was financially supported by the National Key Research and Development Program of China (Grant no. 2016YFB0901600), the NSF of China (Grant no. 51502331), the STC of Shanghai (Grants no. 16JC1401700 and 17ZR1434400), the Key Research Program of Chinese Academy of Sciences (Grants no. QYZDJ-SSW-JSC013 and KGZD-EW-T06), and CAS pioneer hundred talents program.
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/24680]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China 2.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China 3.Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Tian, Zhangliu,Wang, Dong,Bu, Kejun,et al. Highly Conductive Cable-Like Bicomponent Titania Photoanode Approaching Limitation of Electron and Hole Collection[J]. ADVANCED FUNCTIONAL MATERIALS,2018,28(36).
APA	Tian, Zhangliu.,Wang, Dong.,Bu, Kejun.,Lin, Jie.,Zhang, Shaoning.,...&Huang, Fuqiang.(2018).Highly Conductive Cable-Like Bicomponent Titania Photoanode Approaching Limitation of Electron and Hole Collection.ADVANCED FUNCTIONAL MATERIALS,28(36).
MLA	Tian, Zhangliu,et al."Highly Conductive Cable-Like Bicomponent Titania Photoanode Approaching Limitation of Electron and Hole Collection".ADVANCED FUNCTIONAL MATERIALS 28.36(2018).