Montmorillonite-supported Ag/TiO(2) nanoparticles: an efficient visible-light bacteria photodegradation material.
Montmorillonite (MMT)-supported Ag/TiO(2) composite (Ag/TiO(2)/MMT) has been prepared through a one-step, low-temperature solvothermal technique. Powder X-ray diffraction (XRD) and transmission electron microscopy (TEM) reveal that the Ag particles coated with TiO(2) nanoparticles are well-dispersed on the surface of MMT in the composite. As a support for the Ag/TiO(2) composite, the MMT prevents the loss of the catalyst during recycling test. This Ag/TiO(2)/MMT composite exhibits high photocatalytic activity and good recycling performance in the degradation of E. coli under visible light. The high visible-light photocatalytic activity of the Ag/TiO(2)/MMT composite is ascribed to the increase in surface active centers and the localized surface plasmon effect of the Ag nanoparticles. The Ag/TiO(2)/MMT materials with excellent stability, recyclability, and bactericidal activities are promising photocatalysts for application in decontamination.
Wu
Tong-Shun
TS
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.
Wang
Kai-Xue
KX
Li
Guo-Dong
GD
Sun
Shi-Yang
SY
Sun
Jian
J
Chen
Jie-Sheng
JS
D001546:Bentonite / Q000737:chemistry*; D002470:Cell Survival / Q000187:drug effects; D004926:Escherichia coli / Q000187:drug effects / Q000502:physiology*; D008027:Light; D008422:Materials Testing; D053758:Nanoparticles / Q000008:administration & dosage* / Q000737:chemistry* / Q000528:radiation effects; D036103:Nanotechnology / Q000379:methods; D012834:Silver / Q000008:administration & dosage* / Q000737:chemistry* / Q000528:radiation effects; D014025:Titanium / Q000737:chemistry* / Q000528:radiation effects
D001546:Bentonite; C009495:titanium dioxide; D012834:Silver; D014025:Titanium