Degradation of Reactive Brilliant Red KE-3B in aqueous solution by mesoporous ZnO

作者：Lv, Hua; Liu, Yumin^*; Li, Shuangqing; Xi, Guoxi; Xing, Xinyan

来源：Desalination and Water Treatment, 2012, 49(1-3): 57-64.

DOI：10.1080/19443994.2012.708198

• ZnO
• Photocatalysis
• Photocatalytic degradation
• Reactive Brilliant Red KE-3B

The photocatalytic degradation of Reactive Brilliant Red KE-3B using mesoporous ZnO as photocatalyst in aqueous solution had been investigated under UV irradiation. The average particle size and specific surface area of the mesoporous ZnO were 40.3 nm and 20.7m(2)/g, respectively. The effects of catalyst loading, solution pH, initial dye concentration and anions (SO42-, NO3-, Cl- and CO32-) on the photocatalytic degradation of the model compound were investigated. Under the optimum conditions, approximately 98.9% decolorization efficiency within 45 min and 83.7% total organic carbon removal efficiency within 3 h were achieved, which were higher than that by the commercial ZnO. In addition, the degradation intermediates were analyzed by a gas chromatography coupled with mass spectrometry system and the probable pathways for the formation of the intermediates were proposed.

• 出版日期2012-11
• 单位河南师范大学