TY - JOUR
T1 - Sonophotoelectrocatalytic degradation of azo dye on TiO2 nanotube electrode
AU - Zhang, Zhonghai
AU - Yuan, Yuan
AU - Liang, Linhong
AU - Fang, Yanju
AU - Cheng, Yuxiao
AU - Ding, Hongchun
AU - Shi, Guoyue
AU - Jin, Litong
PY - 2008/4
Y1 - 2008/4
N2 - The degradation of azo dye, methyl orange (MeO) in aqueous solution with sonophotoelectrocatalytic process was investigated. The TiO2 nanotubes were used as electrode in photoelectrocatalytic (PEC), sonophotoelectrocatalytic (SPEC) processes or as photocatalyst in photocatalytic (PC), sonophotocatalytic (SPC) processes, respectively. Experimental results showed that the hybrid processes could efficiently enhance the degradation efficiency of MeO, and followed pseudo-first-order kinetics. At the optimized experimental conditions, the rate constants of decolorization of MeO were 0.0732 min-1 for SPEC process; 0.0523 min-1 for PEC process, 0.0073 min-1 for SPC process and 0.0035 min-1 for PC process. The rate constants obviously indicated that there existed synergistic effect in the ultrasonic, electro-assisted and photocatalytic processes.
AB - The degradation of azo dye, methyl orange (MeO) in aqueous solution with sonophotoelectrocatalytic process was investigated. The TiO2 nanotubes were used as electrode in photoelectrocatalytic (PEC), sonophotoelectrocatalytic (SPEC) processes or as photocatalyst in photocatalytic (PC), sonophotocatalytic (SPC) processes, respectively. Experimental results showed that the hybrid processes could efficiently enhance the degradation efficiency of MeO, and followed pseudo-first-order kinetics. At the optimized experimental conditions, the rate constants of decolorization of MeO were 0.0732 min-1 for SPEC process; 0.0523 min-1 for PEC process, 0.0073 min-1 for SPC process and 0.0035 min-1 for PC process. The rate constants obviously indicated that there existed synergistic effect in the ultrasonic, electro-assisted and photocatalytic processes.
KW - Methyl orange
KW - Photocatalytic (PC)
KW - Photoelectrocatalytic (PEC)
KW - Sonophotocatalytic (SPC)
KW - Sonophotoelectrocatalytic (SPEC)
KW - TiO nanotube
KW - Ultrasound
UR - https://www.scopus.com/pages/publications/44249123509
U2 - 10.1016/j.ultsonch.2007.09.017
DO - 10.1016/j.ultsonch.2007.09.017
M3 - 文章
C2 - 18054266
AN - SCOPUS:44249123509
SN - 1350-4177
VL - 15
SP - 370
EP - 375
JO - Ultrasonics Sonochemistry
JF - Ultrasonics Sonochemistry
IS - 4
ER -