Enhancement of Hydrogen Evolution from Water Photocatalysis Using Liquid Phase Plasma on Metal Oxide-Loaded Photocatalysts

Sangmin Jeong, Kyong Hwan Chung, Heon Lee, Hyunwoong Park, Ki Joon Jeon, Young Kwon Park, Sang Chul Jung

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

This study examined hydrogen evolution by water photocatalysis using liquid phase plasma on metal oxide-loaded photocatalysts. Metal-loaded TiO2 nanocrystallites supported on mesoporous materials were introduced as photocatalysts. SBA-15 and MCM-41 mesoporous materials were applied as a support for the metal-loaded TiO2 nanocrystallites. The photocatalytic activities of the photocatalysts were estimated for hydrogen production from water. Hydrogen was generated in the photodecomposition of water through liquid phase plasma irradiation. The rate of hydrogen evolution was increased by the metal loading on the TiO2 surface. Photocatalytic activity was improved significantly with Ni loading on the TiO2. The TiO2 nanocrystallites prepared by sol-gel method were incorporated above 50 wt % on the MCM-41 mesoporous support. The mesoporous materials acted as an efficient photocatalytic support for the fixation of TiO2. Hydrogen evolution was enhanced with Ni incorporation on the TiO2 supported on the mesoporous supports. The addition of formaldehyde to water induced an apparent enhancement of hydrogen evolution. The formaldehyde assists to improve the hydrogen production with adding of hydrogen by its decomposition.

Original languageEnglish
Pages (from-to)3659-3666
Number of pages8
JournalACS Sustainable Chemistry and Engineering
Volume5
Issue number5
DOIs
StatePublished - 1 May 2017

Keywords

  • Hydrogen evolution
  • Liquid phase plasma
  • Mesoporous supports
  • Metal-loaded TiO
  • Photocatalytic decomposition

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