4.8 Article

Surface Chlorination of TiO2-Based Photocatalysts: A Way to Remarkably Improve Photocatalytic Activity in Both UV and Visible Region

Journal

ACS CATALYSIS
Volume 1, Issue 3, Pages 200-206

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/cs100122v

Keywords

Photocatalysis; chlorine; visible light; TiO2

Funding

  1. National Nature Science Foundation of China [21077023, 20701008, U1033603]
  2. Natural Science Foundation of Fujian Province of China [2010J01035, JA10008]
  3. Chinese Ministry of Education [207053]
  4. National Basic Research Program of China (973 Program) [2007CB613306]
  5. Program for Changjiang Scholars and Innovative Research Team in University [PCSIRT0818]

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Endeavoring to the imperative and challenging issue of developing efficient and applicable visible route for modifying TiO2-based photocatalysts work efficiently in both the UV and visible regions. The cholorine acted not only as a key component, endowing TiO2 with fascinating visible light activity,but also as an effective promoter rendering both visible light and UV photocatalysts with remarkly enhanced activity. The increase in oxygen vacanies and the chain transfer reaction initiated by chlorine radicals were mainly responsible for the remarkable improvement in activity.

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