Fabrication and photoelectrochemical study of Ag@TiO2 nanoparticle thin film electrode

Haw Yeu Chuang, Dong Hwang Chen

研究成果: Article同行評審

49 引文 斯高帕斯(Scopus)

摘要

Ag@TiO2 nanoparticle thin film was fabricated for photoelectrochemical water splitting in the visible light region. Under the irradiation of UV light, positive photocurrent was enhanced in both electrolytes of 0.1 M HNO3 and 0.1 M NaOH owing to the excitation of photoelectrons within the TiO2 shells. However, under the irradiation of visible light, the enhancement of positive photocurrent was observed only in 0.1 M HNO3 because of the formation of a Schottky barrier band bending at the Ag-TiO2 core-shell interface and the generation of photoelectrons resulted from the surface plasmon resonance of Ag cores. In 0.1 M NaOH, significant negative photocurrent was enhanced due to the influences of higher pH on the surface state and energy level of TiO2 shells. Such a visible light-induced photoresponse enhancement and photocurrent direction switching made the Ag@TiO2 nanoparticle thin film useful not only as a photoelectrode for water splitting but also as a photo-switch in a basic electrolyte.

原文English
頁(從 - 到)9487-9495
頁數9
期刊International Journal of Hydrogen Energy
36
發行號16
DOIs
出版狀態Published - 2011 8月

All Science Journal Classification (ASJC) codes

  • 可再生能源、永續發展與環境
  • 燃料技術
  • 凝聚態物理學
  • 能源工程與電力技術

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