Semiconductor mediated photocatalysed degradation of an anthraquinone dye, Remazol Brilliant Blue R under sunlight and artificial light source
Semiconductor mediated photocatalysed degradation of an anthraquinone dye, Remazol Brilliant Blue R under sunlight and artificial light source
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DOI：
10.1016/s0143-7208(02)00024-4
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发表时间：
2002-06
影响因子：
4.5
通讯作者：
M. Saquib;M. Muneer
中科院分区：
文献类型：
--
作者：
M. Saquib;M. Muneer
Semiconductor mediated photocatalysed degradation of an anthraquinone dye Remazol Brilliant Blue R under sunlight and artificial light source has been investigated in aqueous suspensions of titanium dioxide by monitoring the change in absorption intensity as a function of irradiation time under a variety of conditions. The degradation kinetics were studied under different conditions such as pH, catalyst concentration, substrate concentration, different types of TiO2and in the presence of electron acceptors such as hydrogen peroxide (H2O2), potassium bromate (KBrO3) and ammonium persulphate (NH4)2S2O8besides molecular oxygen. The degradation rates were found to be strongly influenced by all the above parameters. The photocatalyst Degussa P25 was found to be more efficient under UV light, whereas Hombikat UV100 was better under sunlight as compared with other photocatalysts. The degradation products were analysed by GC–MS technique and probable pathways for the formation of products are proposed.
