Parameters affecting the photocatalytic degradation of dyes using TiO2 based photocatalysts: A review

  • Akpan U
  • Hameed B
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Abstract

This paper presents the review of the effects of operating parameters on the photocatalytic degradation of textile dyes using TiO2-based photocatalysts. It further examines various methods used in the preparations of the considered photocatalysts. The findings revealed that various parameters, such as the initial pH of the solution to be degraded, oxidizing agents, temperature at which the catalysts must be calcined, dopant(s) content and catalyst loading exert their individual influence on the photocatalytic degradation of any dye in wastewaters. It was also found out that sol-gel method is widely used in the production of TiO2-based photocatalysts because of the advantage derived from its ability to synthesize nanosized crystallized powder of the photocatalysts of high purity at relatively low temperature. ?? 2009 Elsevier B.V. All rights reserved.

Author-supplied keywords

  • Dopant
  • Parameters
  • Photocatalytic degradation
  • Preparation

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Authors

  • U. G. Akpan

  • B. H. Hameed

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