Novel nitrogen-doped anatase TiO2 mesoporous bead photocatalysts for enhanced visible light response

Wei Chung Huang, Jyh Ming Ting

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

This work reports the synthesis and characterization of a novel, high surface area N-doped anatase TiO2 mesoporous bead as a photocatalyst for visible light photodegradation. The beads were prepared using a two-cycle microwave-assisted hydrothermal method using three different types of nitrogen dopants: diaminohexane, triethylamine, and urea. In the first cycle, TiO2 mesoporous beads with controlled structures were synthesized at 200 °C without further calcination. The obtained beads were then subjected to a second cycle of microwave -assisted hydrothermal process for nitrogen doping. The photocatalytic activity of the N-doped mesoporous TiO2 beads was determined by measuring the decomposition of a methyl blue aqueous solution under UV and visible light. It was found that different precursors lead to different degrees of doping which enhances the light absorption primarily in the visible light region. We demonstrate that the photocatalytic activity or photodegradation is enhanced in the visible light region.

Original languageEnglish
Pages (from-to)9992-9997
Number of pages6
JournalCeramics International
Volume43
Issue number13
DOIs
Publication statusPublished - 2017 Jan 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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