Impact of Cu oxidation state on photocatalytic H₂ production by Cu/TiO₂

Minsu Jung, Jason Scott, Yun Hau Ng, Yijiao Jiang, Rose Amal

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

Abstract

This work focuses on the influence of Cu oxidation state on photocatalytic hydrogen generation by Cu/TiO₂. Hydrogen reduction was used to tailor the Cu oxidation state on the TiO₂. Cu⁺ and/or Cu⁰ appeared to be the more favourable oxidation state for generating H₂. Cu²⁺ initially present on the TiO₂ was reduced to Cu⁺ and/or Cu⁰ during the photocatalytic process. Cu deposits on reduced Cu/TiO₂ catalysts were observed to be metallic Cu with a thin shell of CuO and its activity was greater than both bare TiO₂ and air-calcined Cu/TiO₂. This enhancement could be attributed to metallic copper and improved Cu crystallinity.
Original languageEnglish
Title of host publicationProceedings of the 2014 International Conference on Nanoscience and Nanotechnology
Subtitle of host publicationICONN 2014
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages4-6
Number of pages3
ISBN (Electronic)9781479935215, 9781479935222
ISBN (Print)9781479935215
DOIs
Publication statusPublished - 21 Nov 2014
Externally publishedYes
EventInternational Conference on Nanoscience and Nanotechnology - Adelaide, South Australia
Duration: 2 Feb 20146 Feb 2014

Conference

ConferenceInternational Conference on Nanoscience and Nanotechnology
CityAdelaide, South Australia
Period2/02/146/02/14

Keywords

  • copper
  • TiO₂
  • oxidation state
  • photocatalytic hydrogen production

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  • Cite this

    Jung, M., Scott, J., Ng, Y. H., Jiang, Y., & Amal, R. (2014). Impact of Cu oxidation state on photocatalytic H₂ production by Cu/TiO₂. In Proceedings of the 2014 International Conference on Nanoscience and Nanotechnology: ICONN 2014 (pp. 4-6). Piscataway, NJ: Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ICONN.2014.6965246