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Towards efficient visible-light active photocatalysts: CdS/Au sensitized TiO2 nanotube arrays

Author:
Nguyen, VanManh, Cai, Qingyun, Grimes, Craig A.
Source:
Journal of colloid and interface science 2016 v.483 pp. 287-294
ISSN:
0021-9797
Subject:
adsorption, gold, lighting, nanogold, nanotubes, photocatalysts, quantum dots, titanium dioxide
Abstract:
A visible-light active photocatalyst, CdS/Au/TiO2 nanotube array (NTA) photoelectrode, was prepared by electrodeposition of Au nanoparticles onto TiO2 NTA with subsequent deposition of visible-light absorbable 2.4eV band-gap CdS quantum dots using successive ion layer adsorption and reaction (SILAR). The Au nanoparticles here act as electron sinks facilitating charge carrier separation. Under AM1.5G illumination a photoconversion efficiency of 4.06% was achieved for the CdS/Au/TiO2 NTA photoelectrode, suggesting the promise of the material architecture for achieving high-performance cost-effective materials.
Agid:
6059005