Dual-frequency (20/40 kHz) ultrasonic assisted photocatalysis for degradation of methylene blue effluent: Synergistic effect and kinetic study | |
Xiong, Shao Feng ; Yin, Zhou Lan ; Yuan, Zhang Fu ; Yana, Wen Bin ; Yang, Wen Yin ; Liu, Jin Jian ; Zhang, Fan | |
刊名 | ultrasonics sonochemistry
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2012 | |
关键词 | Dual-frequency ultrasonic assisted phorocatalysis Titanium dioxide Methylene blue Synergistic effect AQUEOUS-SOLUTION TIO2 DYE NITROBENZENE ENHANCEMENT SONOLYSIS FIELDS |
DOI | 10.1016/j.ultsonch.2012.01.007 |
英文摘要 | Dual-frequency ultrasonic assisted photocatalysis (DUAP) was proposed to enhance the degradation efficiency of methylene blue (MB) solution. The influence of operational parameters, i.e., irradiation time, ultrasonic arrangement, TiO2 concentration and power density, was studied. The results implied that the rapid degradation of MB solution was achieved in 18 min under DUAP with the dual frequencies of 20/40 kHz. Kinetic investigation of MB degradation for the DUAP process was conducted on the basis of first-order kinetic equation and the synergistic effect was assessed by examination of the apparent rate constant. The effect of ultrasonic arrangement was analyzed by comparison of the pressure amplitude of ultrasonic superposition field. The evolvement of intermediate products and the role of active species during DUAP were distinguished by UV-Vis spectra and the free radical scavenging experiment. (C) 2012 Elsevier B.V. All rights reserved.; Acoustics; Chemistry, Multidisciplinary; SCI(E); EI; 0; ARTICLE; 4; 756-761; 19 |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.pku.edu.cn/handle/20.500.11897/233106] ![]() |
专题 | 工学院 |
推荐引用方式 GB/T 7714 | Xiong, Shao Feng,Yin, Zhou Lan,Yuan, Zhang Fu,et al. Dual-frequency (20/40 kHz) ultrasonic assisted photocatalysis for degradation of methylene blue effluent: Synergistic effect and kinetic study[J]. ultrasonics sonochemistry,2012. |
APA | Xiong, Shao Feng.,Yin, Zhou Lan.,Yuan, Zhang Fu.,Yana, Wen Bin.,Yang, Wen Yin.,...&Zhang, Fan.(2012).Dual-frequency (20/40 kHz) ultrasonic assisted photocatalysis for degradation of methylene blue effluent: Synergistic effect and kinetic study.ultrasonics sonochemistry. |
MLA | Xiong, Shao Feng,et al."Dual-frequency (20/40 kHz) ultrasonic assisted photocatalysis for degradation of methylene blue effluent: Synergistic effect and kinetic study".ultrasonics sonochemistry (2012). |
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