Photocatalytic splitting of seawater and degradation of methylene blue on CuO/nano TiO 2

A. J. Simamora, T. L. Hsiung, F. C. Chang, T. C. Yang, C. Y. Liao, H. Paul Wang

Research output: Contribution to journalArticlepeer-review

80 Citations (Scopus)


The main objective of this study was to prepare effective photocatalysts for splitting of seawater for solar fuel - H 2 and degradation of seawater organic pollutants such as dyes. To enhance photocatalytic activities, CuO is supported on nano TiO 2 (CuO/nano TiO 2). By X-ray absorption near edge structure (XANES) spectroscopy, CuO clusters are found on nano TiO 2. The 2.5% CuO/nano TiO 2 has greater activities in photocatalytic splitting of water and seawater than nano TiO 2 by 9.9 and 7.8 times, respectively. Interestingly, the 2.5% CuO/nano TiO 2 is also very active for photocatalytic splitting of water and seawater contaminated with dyes such as methylene blue (MB) (10 ppm). Under a 5-h irradiation of the UV-Vis light, about 99% of MB is degraded while 3.1 μmol/h g cat of H 2 are generated from seawater in the photocatalysis process. Highlights: CuO/nano TiO 2 can enhance photocatalytic splitting of seawater for H 2 fuel. Nano TiO 2 promoted with CuO clusters has enhanced photoactivity. Photocatalytic degradation of dyes in seawater with desired H 2 yields.

Original languageEnglish
Pages (from-to)13855-13858
Number of pages4
JournalInternational Journal of Hydrogen Energy
Issue number18
Publication statusPublished - 2012 Sept

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology


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