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Observation of plasmon boosted photoelectrochemical activities on single Au/Cu2O nanoelectrode

2020-06-19

 

Author(s): Qian, YY (Qian, Yuanyuan); Liu, J (Liu, Jun); Zhang, BT (Zhang, Bo-tao); Huang, YB (Huang, Yanbin); Cao, DW (Cao, Dawei); Ren, KK (Ren, Kuankuan); Tang, HR (Tang, Haoran); Sun, Y (Sun, Yang); Li, QC (Li, Qicong); Yang, C (Yang, Cheng); Qu, SC (Qu, Shengchun); Wang, ZJ (Wang, Zhijie); Li, YX (Li, Yongxin)

Source: JOURNAL OF PHYSICS D-APPLIED PHYSICS Volume: 53 Issue: 16 Article Number: 165102 DOI: 10.1088/1361-6463/ab6e9f Published: APR 15 2020

Abstract: Plasmon related photoelectrochemical (PEC) reactions have been widely reported on metallic nanostructures in a large scale. However, the detailed information on single nanostructure has been rarely reported. Herein, we construct nanoelectrode based on single Au/Cu2O nanowire to unveil how surface plasma in Au nanowire impact the PEC behavior of Au/Cu2O nanoelectrode with diameter as small as 100 nm. Even in such low dimension, we could still observe obvious photocurrent in the scale of nanoamperes. The contribution of plasma in Au nanowire has been confirmed by the external quantum yield spectra and the exponential curve of photocurrent versus light intensity. Importantly, H-2 bubble has also been observed in the water reduction process. Thus, insights on PEC reactions in nanoscale have been provided.

Accession Number: WOS:000537530200002

Author Identifiers:

Author        Web of Science ResearcherID        ORCID Number

LI, YONGXIN         A-7227-2011         0000-0001-5543-4242

ISSN: 0022-3727

eISSN: 1361-6463

Full Text: https://iopscience.iop.org/article/10.1088/1361-6463/ab6e9f



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