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Nano Research

Article Title

Integrated hetero-nanoelectrodes for plasmon-enhanced electrocatalysis of hydrogen evolution

Authors

Wenyu Jiang, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100049, China
Xianxin Wu, University of Chinese Academy of Sciences, Beijing 100049, China;CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
Jinquan Chang, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100049, China
Yanhong Ma, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
Luting Song, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
Zhexue Chen, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100049, China
Cheng Liang, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100049, China
Xinfeng Liu, University of Chinese Academy of Sciences, Beijing 100049, China;CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
Yong Zhang, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100049, China

Keywords

nano-integration, heterostructure, plasmonic metal, molybdenum disulfide (MoS2), hydrogen evolution reaction (HER)

Abstract

Hetero-nanostructures of plasmonic metals and semiconductors have attracted increasing attention in the field of photocatalysis. However, most of the hetero-nanostructured catalysts are randomly arranged and therefore require comprehensive structural design for optimizing their properties. Herein, we report the robust construction of hierarchical hetero-nanostructures where gold (Au) nanorods and molybdenum disulfide (MoS2) quantum sheets (QSs) are integrated in highly ordered arrays. Such construction is achieved through porous anodic alumina (PAA) template-assisted electrodeposition. The as-fabricated hetero-nanostructures demonstrate exciting electrocatalysis towards hydrogen evolution reaction (HER). Both plasmon-induced hot-electron injection and plasmonic scattering/reabsorption mechanisms are determinative to the enhanced electrocatalytic performances. Notably, broadband photoresponses of HER activity in the visible range are observed, indicating their superiority compared with random systems. Such integrated hetero-nanoelectrodes could provide a powerful platform for conversion and utilization of solar energy, meanwhile would greatly prompt the production and exploration of ordered nanoelectrodes.

Publisher

Tsinghua University Press

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