中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Donor-Acceptor Supramolecular Organic Nanofibers as Visible-Light Photoelectrocatalysts for Hydrogen Production

文献类型:期刊论文

作者Yang, LP (Yang, Liping)[ 1,2,3 ]; Wang, MM (Wang, Maomao)[ 1,2 ]; Slattum, PM (Slattum, Paul M.)[ 4,5,6,7 ]; Bunes, BR (Bunes, Benjamin R.)[ 4,6,7 ]; Wang, YH (Wang, Yuanhao)[ 1,2 ]; Wang, CY (Wang, Chuanyi)[ 1,2,8 ]; Zang, L (Zang, Ling)[ 6,7 ]
刊名ACS APPLIED MATERIALS & INTERFACES
出版日期2018
卷号10期号:23页码:19764-19772
关键词one-dimensional self-assembly photoelectrocatalyst hydrogen production nanofiber perylene tetracarboxylic diimide
ISSN号1944-8244
DOI10.1021/acsami.8b05637
英文摘要

Perylene tetracarboxylic diimide (PTCDI) derivatives have been extensively studied for one-dimensional (1D) self-assembled systems and for applications in photocatalysis. Herein, we constructed a PTCDI-based donor - acceptor (D - A) supramolecular system via in situ self-assembly on an indium tin oxide conductive glass surface. The self-assembled PTCDI nano-structures exhibit well-defined nanofibril morphologies and strong photocurrents. Interestingly, a strong and reversible electrochromic color change was observed during cyclic voltammetry. The color of the nanofibers changed from red to blue and then to violet as the reduction progressed to the radical anion and then to the dianion. This series of one-electron reductions was confirmed by UV absorption, electron paramagnetic resonance spectroscopy, and hydrazine reduction. Most importantly, these PTCDI nanofibers exhibit efficient photoelectrocatalytic hydrogen production with remarkable stability under xenon lamp illumination (lambda >= 420 nm). Among the three nanofibers prepared, the fibers assembled from PTCDI molecule 2 were found to be the most effective catalyst with 30% Faradaic efficiency. In addition, the nanofibers produced hydrogen at a steady-state for more than 8 h and produced repeatable results in 3 consecutive testing cycles, giving them great potential for practical industrial applications. Under an applied bias voltage, the 1D intermolecular stacking along the long axis of the nanofibers affords efficient separation and migration of photogenerated charge carriers, which play a crucial role in the photoelectrocatalytic process. As a proof-of-concept, the D-A-structured PTCDI nanofibers presented herein may guide future research on photoelectrocatalysis based on self-assembled supramolecular systems by providing more options for material design of the catalysts to achieve greater efficiencies.

WOS记录号WOS:000435525100053
源URL[http://ir.xjipc.cas.cn/handle/365002/7269]  
专题新疆理化技术研究所_环境科学与技术研究室
作者单位1.Shaanxi Univ Sci & Technol, Sch Environm Sci & Engn, Xian 710021, Shaanxi, Peoples R China
2.Univ Utah, Dept Mat Sci & Engn, Salt Lake City, UT 84112 USA
3.Univ Utah, Nano Inst Utah, Salt Lake City, UT 84112 USA
4.Leibniz Inst Polymerforsch Dresden eV, Hohe Str 6, D-01069 Dresden, Germany
5.Vaporsens Inc, 36 South Wasatch Dr, Salt Lake City, UT 84112 USA
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
7.Chinese Acad Sci, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China
8.Chinese Acad Sci, Lab Environm Sci & Technol, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China
推荐引用方式
GB/T 7714
Yang, LP ,Wang, MM ,Slattum, PM ,et al. Donor-Acceptor Supramolecular Organic Nanofibers as Visible-Light Photoelectrocatalysts for Hydrogen Production[J]. ACS APPLIED MATERIALS & INTERFACES,2018,10(23):19764-19772.
APA Yang, LP .,Wang, MM .,Slattum, PM .,Bunes, BR .,Wang, YH .,...&Zang, L .(2018).Donor-Acceptor Supramolecular Organic Nanofibers as Visible-Light Photoelectrocatalysts for Hydrogen Production.ACS APPLIED MATERIALS & INTERFACES,10(23),19764-19772.
MLA Yang, LP ,et al."Donor-Acceptor Supramolecular Organic Nanofibers as Visible-Light Photoelectrocatalysts for Hydrogen Production".ACS APPLIED MATERIALS & INTERFACES 10.23(2018):19764-19772.

入库方式: OAI收割

来源:新疆理化技术研究所

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