Water splitting reaction on NiO/InVO4 under visible light irradiation

Hsin Yu Lin, Yueh Fang Chen, Yu Wen Chen

Research output: Contribution to journalArticlepeer-review

108 Scopus citations

Abstract

The photocatalytic activities of InVO4 and NiO/InVO4 for water splitting under visible light irradiation were investigated. NiO/InVO4 photocatalysts pretreated by different process were also investigated. The catalysts were characterized by X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, and UV-vis spectroscopy. The photocatalytic reaction was carried out in a Pyrex glass reactor under visible light irradiation. The XRD patterns indicated that the InVO4 material was fully crystallized. SEM images showed that after loading NiO, many pin-holes were observed on the surface of the InVO4 particles. The particle size of the catalyst was about 5 μ m. The band gap of InVO4 samples was 1.8 eV as estimated from UV-vis spectra. InVO4 was very active to produce H2. The NiO/InVO4 catalyst which was reduced at 500 {ring operator} C for 2 h and then oxidized at ambient condition for 48 h gave the highest activity, which demonstrated that the pre-treatment process plays a key role in creating high catalytic performance for the NiO/InVO4 catalyst.

Original languageEnglish
Pages (from-to)86-92
Number of pages7
JournalInternational Journal of Hydrogen Energy
Volume32
Issue number1
DOIs
StatePublished - Jan 2007

Keywords

  • Hydrogen energy
  • InVO
  • Photocatalyst
  • Water splitting

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