skip to main content

SciTech ConnectSciTech Connect

Title: Combined Au-plasmonic nanoparticles with mesoporous carbon material (CMK-3) for photocatalytic water splitting

The conventional TiO{sub 2} photoelectrode for water splitting was integrated with ordered mesoporous carbon material (CMK-3) and Au metal nanoparticles (NPs) to improve the photocatalytic efficiency under visible light irradiation. Compared to TiO{sub 2}, Au/TiO{sub 2}-CMK-3 photoelectrode demonstrated over two orders of magnitude enhancement of photocurrent under 532 nm laser irradiation due to the generation of hot electron and near field from Au NPs. Furthermore, the improvement of free carrier transport and additional long-wavelength absorption can be achieved by exploiting the superior conductivity and blackbody-like property of CMK-3. This proposed enhancement mechanism was proved by the measurements of photoluminescence emission spectrum and electrochemical impedance spectroscopy.
Authors:
; ;  [1] ; ; ;  [2] ;  [3]
  1. Department of Materials Science and Engineering, Feng Chia University, No. 100, Wenhwa Rd., Seatwen, Taichung 407, Taiwan (China)
  2. Shanghai Advanced Research Institute, Chinese Academy of Sciences, 99 Haike Road, Zhangjiang Hi-Tech Park, Pudong, Shanghai 201210 (China)
  3. Department of Materials Engineering, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan, New Taipei City 24301, Taiwan (China)
Publication Date:
OSTI Identifier:
22489132
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 7; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ABSORPTION; CARBON; CARRIERS; EFFICIENCY; ELECTROCHEMISTRY; EMISSION SPECTRA; IMPEDANCE; IRRADIATION; LASER RADIATION; NANOPARTICLES; NANOSTRUCTURES; PHOTOCATALYSIS; PHOTOLUMINESCENCE; SPECTROSCOPY; TITANIUM OXIDES; VISIBLE RADIATION; WATER; WAVELENGTHS