Journal article

Sonophotocatalytic degradation of 4-chlorophenol using Bi2O3/TiZrO4 as a visible light responsive photocatalyst

Bernaurdshaw Neppolian, Luca Ciceri, Claudia L Bianchi, Franz Grieser, Muthupandian Ashokkumar

Ultrasonics Sonochemistry | ELSEVIER SCIENCE BV | Published : 2011


The oxidative degradation of 4-chlorophenol (4-CP) by sonolytic, photocatalytic and sonophotocatalytic processes was studied in aqueous solutions using Bi(2)O(3)/TiZrO(4) as a visible light driven photocatalyst and with 20 kHz ultrasound. The results reveal that Bi(2)O(3)/TiZrO(4) is an efficient photocatalyst capable of degrading 4-CP by both photocatalytic and sonophotocatalytic processes. During the sonolysis of 4-CP solutions, HPLC results showed the formation of a number of intermediate products, whereas, no such intermediates were formed during the sonophotocatalytic degradation of 4-CP. TOC results showed rapid mineralization of 4-CP during the sonophotocatalytic degradation process, ..

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