Degradation of microcystin-LR by highly efficient AgBr/Ag3PO4/TiO2 heterojunction photocatalyst under simulated solar light irradiation

作者: Xin Wang , Motoo Utsumi , Yingnan Yang , Dawei Li , Yingxin Zhao

DOI: 10.1016/J.APSUSC.2014.10.078

关键词:

摘要: Abstract A novel photocatalyst AgBr/Ag 3 PO 4 /TiO 2 was developed by a simple facile in situ deposition method and used for degradation of mirocystin-LR. TiO (P25) as cost effective chemical to improve the stability under simulated solar light irradiation. The photocatalytic activity tests this heterojunction were conducted irradiation using methyl orange targeted pollutant. results indicated that optimal Ag Ti molar ratio resulting 1.5 (named BrPTi), which possessed higher capacity than . BrPTi also more stable photocatalysis. This highly efficient relatively further tested hepatotoxin microcystin-LR (MC-LR). suggested MC-LR much easily degraded quenching effects different scavengers proved reactive h + •OH played important roles degradation.

参考文章(56)
Maria G. Antoniou, Jody A. Shoemaker, Armah A. de la Cruz, Dionysios D. Dionysiou, LC/MS/MS structure elucidation of reaction intermediates formed during the TiO2 photocatalysis of microcystin-LR Toxicon. ,vol. 51, pp. 1103- 1118 ,(2008) , 10.1016/J.TOXICON.2008.01.018
Mingcai Yin, Zhaosheng Li, Jiahui Kou, Zhigang Zou, Mechanism Investigation of Visible Light-Induced Degradation in a Heterogeneous TiO2/Eosin Y/Rhodamine B System Environmental Science & Technology. ,vol. 43, pp. 8361- 8366 ,(2009) , 10.1021/ES902011H
Kiyomi Tsuji, Shoji Naito, Fumio Kondo, Naohisa Ishikawa, Mariyo F Watanabe, Makoto Suzuki, Ken-ichi Harada, Stability of microcystins from cyanobacteria: effect of light on decomposition and isomerization. Environmental Science & Technology. ,vol. 28, pp. 173- 177 ,(1994) , 10.1021/ES00050A024
Sugang Meng, Danzhen Li, Meng Sun, Wenjuan Li, Jinxiu Wang, Jing Chen, Xianzhi Fu, Guangcan Xiao, Sonochemical synthesis, characterization and photocatalytic properties of a novel cube-shaped CaSn(OH)6 Catalysis Communications. ,vol. 12, pp. 972- 975 ,(2011) , 10.1016/J.CATCOM.2011.02.026
Lionel Ho, Gretchen Onstad, Urs von Gunten, Stéphanie Rinck-Pfeiffer, Keith Craig, Gayle Newcombe, Differences in the chlorine reactivity of four microcystin analogues Water Research. ,vol. 40, pp. 1200- 1209 ,(2006) , 10.1016/J.WATRES.2006.01.030
Yang Liu, Xiaolei Wang, Fan Yang, Xiurong Yang, Excellent antimicrobial properties of mesoporous anatase TiO2 and Ag/TiO2 composite films Microporous and Mesoporous Materials. ,vol. 114, pp. 431- 439 ,(2008) , 10.1016/J.MICROMESO.2008.01.032
Iain Liu, Linda A. Lawton, Peter K. J. Robertson, Mechanistic studies of the photocatalytic oxidation of microcystin-LR: an investigation of byproducts of the decomposition process. Environmental Science & Technology. ,vol. 37, pp. 3214- 3219 ,(2003) , 10.1021/ES0201855
Hao Zhang, Geng Wang, Da Chen, Xiaojun Lv, Jinghong Li, Tuning Photoelectrochemical Performances of Ag−TiO2 Nanocomposites via Reduction/Oxidation of Ag Chemistry of Materials. ,vol. 20, pp. 6543- 6549 ,(2008) , 10.1021/CM801796Q
Yujing Zang, Ramin Farnood, Photocatalytic activity of AgBr/TiO2 in water under simulated sunlight irradiation Applied Catalysis B-environmental. ,vol. 79, pp. 334- 340 ,(2008) , 10.1016/J.APCATB.2007.10.019