Chemical Deposition Method for Synthesis of Pt-TiO₂ Composite Nanotubes with Photoelectrochemical Activity

Abstract:

Pt nanoparticles were successfully assembled in self-organized TiO₂ nanotubes by a chemical deposition method. Scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy were used for characterizing the surface morphology and phase composition. Photocurrent response activity was measured. Different morphology of Pt-TiO₂ NTs exhibited different photocurrent generation efficiency. High density Pt nanoparticles depositing on TiO₂ NTs decreased the photocurrent of Pt-TiO₂ electrodes. It was because the high density Pt nanoparticles could become the recombination centers of photoelectrons and holes.

• Periodical: Advanced Materials Research (Volume 465)
• Pages: 276-282
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.465.276
• Online since: February 2012
• Authors: Zhong Hui Gao, Zhen Duo Cui, Xian Jin Yang
• Keywords: Chemical Deposition Method, Photocurrent Response, Pt Nanoparticle, TiO₂ Nanotube

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