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Photocatalytic decoloration of RBR X 3B on aggregated 0.1%Al TiO 2 spheres: the role of calcination

HONG WANG1, MING HAN1, HONGLIANG XIN1, WENJIE ZHANG1,*

Affiliation

  1. School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, China

Abstract

Al uminum doped TiO 2 in an aggregated sphere form was synthesized by sol gel method. Graphical spheres were used as template to prepare the aggregated 0.1%Al TiO 2 spheres. Anatase TiO2 in the preferred orientation of (101) plane is the sole phase in all the samples. Increasing calcination temperature leads to enlarging cell volume and growing crystallite size. BET surface area of the 0.1%Al TiO 2 reduces from 37.0 m2/g at 400 o C to 3.4 m2/g at 600 o C. The 0.1%Al TiO 2 calcined at 500 o C has the maximum photocatalytic activity. 43.6% of the total number of RBR X 3B molecules is decomposed after 30 min of illumination. The apparent reaction rate constant i s 0.031 min 1 o f the 0.1%Al TiO 2 sample . Decoloration efficiency i s reduced from 100% to 80% after five photoca talytic cycles..

Keywords

P hotocatalytic S ol gel TiO 2 A luminum C alcination.

Citation

HONG WANG, MING HAN, HONGLIANG XIN, WENJIE ZHANG, Photocatalytic decoloration of RBR X 3B on aggregated 0.1%Al TiO 2 spheres: the role of calcination, Optoelectronics and Advanced Materials - Rapid Communications, 12, 9-10, September-October 2018, pp.622-626 (2018).

Submitted at: Dec. 12, 2017

Accepted at: Oct. 10, 2018