Dual-frequency (20/40 kHz) ultrasonic assisted photocatalysis for   degradation of methylene blue effluent: Synergistic effect and kinetic   study

doi:10.1016/j.ultsonch.2012.01.007

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	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
	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).