Hierarchical TiO2 nanowire/microflower photoanode modified with Au nanoparticles for efficient photoelectrochemical water splitting
Duan, Yanyan; Zhou, Shaochen; Chen ZH(陈志鸿); Luo, Jianmin; Zhang, Mei; Wang F(王富); Xu, Tao; Wang, Chuanyi
作者部门广州中国科学院沈阳自动化研究所分所
发表期刊Catalysis Science and Technology
ISSN2044-4753
2018
卷号8期号:5页码:1395-1403
收录类别SCI ; EI
EI收录号20181104893563
WOS记录号WOS:000427157000018
产权排序2
资助机构National Natural Science Foundation of China ; '1000 Talent Program' (The Recruitment Program of Global Experts) ; Guangdong Provincial Science and Technology Project ; Support Scheme of Guangzhou for Leading Talents in Innovation and Entrepreneurship funding from Guangzhou ; U.S. National Science Foundation
摘要

An efficient photoelectrochemical water splitting system is developed based on a hierarchical TiO2nanowire/microflower (H-TiO2) photoanode, which is synthesized via a one-step hydrothermal process. The H-TiO2structure is formed via three primary self-assembly processes and simultaneously offers excellent ultraviolet light absorption capacity and large specific surface area. The H-TiO2photoanode achieves a 1.3 fold enhancement in photocurrent density compared to its TiO2nanowire-based counterpart at 1.23 V vs. reversible hydrogen electrode (the theoretical potential for water electrolysis). More strikingly, by incorporating the surface plasmon resonance (SPR) effect from Au nanoparticles (NPs), the resulting Au/H-TiO2-based photoanodes (Au/H-TiO2) exhibit an about two-fold enhancement in photocurrent density under both simulated sunlight and visible-light illumination. Moreover, the maximum photoconversion efficiency of Au/H-TiO2gives three fold enhancement compared to that in the absence of Au NPs. Significantly, Au NPs incorporated on the H-TiO2surface also serve as co-catalysts like Pt under white-light illumination, reducing the onset potential by about 0.15 V and the current saturation potential by about 0.18 V. The enhanced photoactivity under white light is due to the co-action of electron transfer from the efficient carrier separation of H-TiO2(ultraviolet part) and Au to H-TiO2under the SPR effect (visible part). The present study provides a new strategy for designing and fabricating TiO2-based devices with favorable energy conversion efficiency for photoelectrochemical water splitting. © 2018 The Royal Society of Chemistry.

语种英语
WOS类目Chemistry, Physical
关键词[WOS]SENSITIZED SOLAR-CELLS ; VISIBLE-LIGHT ; NANOTUBE ARRAYS ; NANOWIRE ARRAYS ; HYDROGEN GENERATION ; PHOTOCATALYTIC PERFORMANCE ; OXIDATION ; SEMICONDUCTOR ; NANOCRYSTALS ; NANORODS
WOS研究方向Chemistry
资助项目National Natural Science Foundation of China[21473248] ; National Natural Science Foundation of China[21503271] ; '1000 Talent Program' (The Recruitment Program of Global Experts) ; Guangdong Provincial Science and Technology Project[2017A050506009] ; Support Scheme of Guangzhou for Leading Talents in Innovation and Entrepreneurship funding from Guangzhou[2016015] ; U.S. National Science Foundation[CBET-1150617]
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sia.cn/handle/173321/21570
专题广州中国科学院沈阳自动化研究所分所
通讯作者Wang F(王富)
作者单位1.Laboratory of Environmental Science and Technology, Key Laboratory of Functional Materials and Devices for Special Environments, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
2.Shenyang Institute of Automation, Chinese Academy of Sciences, Guangzhou 511458, China
3.Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL 60115, United States
推荐引用方式
GB/T 7714
Duan, Yanyan,Zhou, Shaochen,Chen ZH,et al. Hierarchical TiO2 nanowire/microflower photoanode modified with Au nanoparticles for efficient photoelectrochemical water splitting[J]. Catalysis Science and Technology,2018,8(5):1395-1403.
APA Duan, Yanyan.,Zhou, Shaochen.,Chen ZH.,Luo, Jianmin.,Zhang, Mei.,...&Wang, Chuanyi.(2018).Hierarchical TiO2 nanowire/microflower photoanode modified with Au nanoparticles for efficient photoelectrochemical water splitting.Catalysis Science and Technology,8(5),1395-1403.
MLA Duan, Yanyan,et al."Hierarchical TiO2 nanowire/microflower photoanode modified with Au nanoparticles for efficient photoelectrochemical water splitting".Catalysis Science and Technology 8.5(2018):1395-1403.
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