Jump to Main Content
Towards efficient visible-light active photocatalysts: CdS/Au sensitized TiO2 nanotube arrays
- Nguyen, VanManh, Cai, Qingyun, Grimes, Craig A.
- Journal of colloid and interface science 2016 v.483 pp. 287-294
- adsorption, gold, lighting, nanogold, nanotubes, photocatalysts, quantum dots, titanium dioxide
- 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.