Superior solar- to- hydrogen energy conversion efficiency by visible light- driven hydrogen production via highly reduced Ti2+/ Ti3+states in a blue titanium dioxide photocatalyst

doi:10.1039/c8cy01212a

GIEC OpenIR

	Superior solar- to- hydrogen energy conversion efficiency by visible light- driven hydrogen production via highly reduced Ti2+/ Ti3+states in a blue titanium dioxide photocatalyst
	De Silva, Nuwan Lakshitha 1; Jayasundera, A. C. A.2; Folger, A.3; Kasian, O.3; Zhang, S.3; Yan, Chang-Feng4 ; Scheu, C.3; Bandara, J.1
	2018-10-21
发表期刊	CATALYSIS SCIENCE & TECHNOLOGY
ISSN	2044-4753
卷号	8 期号:18 页码:4657-4664
通讯作者	Bandara, J.(bandaraj@ifs.ac.lk)
摘要	Photocatalytic water splitting is one of the most important renewable paths and a reliable hydrogen production system. In most successful molecular and supramolecular biomimetic hydrogen production methods, a photosensitizer and a catalyst were constructed where the photoexcited electron in the photosensitizer is transferred either inter- or intramolecularly to the catalytic centre. Similar to supramolecular complexes in a photocatalytic hydrogen production scheme, here we develop a redox system that contains Ti3+/Ti2+ reduced states in TiO2 which act as both visible light harvesting components and the catalytic sites for the catalytic hydrogen production with visible-near infrared photons. The Ti3+/Ti2+ states in TiO2 produce hydrogen from pure water with a solar-to-hydrogen energy conversion efficiency of 0.89% and a quantum yield of 43% at 655 nm. The mechanism of hydrogen production by the Ti3+/Ti2+ reduced states in TiO2 involves the initial generation of highly air stable and highly reduced Ti3+ and Ti2+ states in TiO2 by the formation of an AlOOH layer surrounding the anatase and rutile particles. Once Ti3+ and Ti2+ states are generated, these states are continuously self-generated via absorption of visible-near infrared radiation where hydrogen is produced by the transfer of electrons from Ti3+/Ti2+ to H+.
DOI	10.1039/c8cy01212a
关键词[WOS]	TIO2 NANOTUBE ARRAYS ; ANATASE TIO2 ; OXYGEN VACANCIES ; WATER ; SURFACE ; GENERATION ; NANOPARTICLES ; IRRADIATION ; POLLUTANTS ; ELECTRODES
收录类别	SCI
语种	英语
资助项目	AvH Foundation, Germany ; Chinese Academy of Sciences for the CAS PIFI fellowship ; National Natural Science Foundation of China[51576201]
WOS研究方向	Chemistry
项目资助者	AvH Foundation, Germany ; Chinese Academy of Sciences for the CAS PIFI fellowship ; National Natural Science Foundation of China
WOS类目	Chemistry, Physical
WOS记录号	WOS:000448144600010
出版者	ROYAL SOC CHEMISTRY
引用统计	被引频次：31[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/24047
专题	中国科学院广州能源研究所
通讯作者	Bandara, J.
作者单位	1.Natl Inst Fundamental Studies, Hantana Rd,CP 20000, Kandy, Sri Lanka 2.Univ Peradeniya, Dept Chem, Peradeniya, Sri Lanka 3.Max Planck Inst Eisenforsch GmbH, Max Planck Str 1, D-40237 Dusseldorf, Germany 4.Chinese Acad Sci, Guangzhou Inst Energy Convers, Hydrogen Prod & Utilizat Lab, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	De Silva, Nuwan Lakshitha,Jayasundera, A. C. A.,Folger, A.,et al. Superior solar- to- hydrogen energy conversion efficiency by visible light- driven hydrogen production via highly reduced Ti2+/ Ti3+states in a blue titanium dioxide photocatalyst[J]. CATALYSIS SCIENCE & TECHNOLOGY,2018,8(18):4657-4664.
APA	De Silva, Nuwan Lakshitha.,Jayasundera, A. C. A..,Folger, A..,Kasian, O..,Zhang, S..,...&Bandara, J..(2018).Superior solar- to- hydrogen energy conversion efficiency by visible light- driven hydrogen production via highly reduced Ti2+/ Ti3+states in a blue titanium dioxide photocatalyst.CATALYSIS SCIENCE & TECHNOLOGY,8(18),4657-4664.
MLA	De Silva, Nuwan Lakshitha,et al."Superior solar- to- hydrogen energy conversion efficiency by visible light- driven hydrogen production via highly reduced Ti2+/ Ti3+states in a blue titanium dioxide photocatalyst".CATALYSIS SCIENCE & TECHNOLOGY 8.18(2018):4657-4664.