Graphite oxide as a photocatalyst for hydrogen production from water

Te Fu Yeh, Jhih Ming Syu, Ching Cheng, Ting Hsiang Chang, Hsisheng Teng

研究成果: Article同行評審

748 引文 斯高帕斯(Scopus)

摘要

A graphite oxide (GO) semiconductor photocatalyst with an apparent bandgap of 2.4-4.3 eV is synthesized by a modified Hummers' procedure. The as-synthesized GO photocatalyst has an interlayer spacing of 0.42 n m because of its moderate oxidation level. Under irradiation with UV or visible light, this CO photocatalyst steadily catalyzes H2 generation from a 20 vol % aqueous methanol solution and pure water. As the GO sheets extensively disperse in water, a cocatalyst is not required for H2 generation over the GO photocatalyst During photocatalytic reaction, the GO loses some oxygen functional groups, leading to bandgap reduction and increased conductivity. This structural variation does not affect the stable H2 generation over the GO. The encouraging results presented in this study demonstrate the potential of graphitic materials as a medium for water splitting under solar illumination.

原文English
頁(從 - 到)2255-2262
頁數8
期刊Advanced Functional Materials
20
發行號14
DOIs
出版狀態Published - 2010 7月 23

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學
  • 一般化學
  • 一般材料科學

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