Heteronanostructure of Ag particle on titanate nanowire membrane with enhanced photocatalytic properties and bactericidal activities.
A novel seed induced method has been developed for syntheses of Ag particles on titanate nanowires, and then the heteronanostructured Ag/titanate nanowires were assembled into porous, flexible membranes. These titanate nanowires were about several hundreds micrometers in length and about 80 nm in diameter. The size of the Ag particle can be tuned within 300-700 nm. The pore size and thickness of the heteronanostructured membrane were easily controlled. An Ag/titanate nanowire membrane reactor has been developed to study the photocatalytic degradation of methamidophos in aqueous solution, and 87.0% of the methamidophos can be degraded in a concurrent filtration and photocatalytic oxidation process. The antibacterial activity was also investigated on the heteronanostructured membrane with UVA light (365 nm) irradiation, and a 99.99% satisfactory antibacterial effect on Escherichia coli was achieved.
Shang
Lu
L
Department of Physics, Center for Optoelectronics Materials and Devices, and Key Laboratory of ATMMT, Zhejiang Sci-Tech University, Hangzhou 310018, PR China.
Li
Bingjie
B
Dong
Wenjun
W
Chen
Benyong
B
Li
Chaorong
C
Tang
Weihua
W
Wang
Ge
G
Wu
Jian
J
Ying
Yibin
Y
D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D002384:Catalysis; D004926:Escherichia coli / Q000187:drug effects; D007306:Insecticides / Q000737:chemistry; D008567:Membranes, Artificial; D008826:Microbial Sensitivity Tests; D008855:Microscopy, Electron, Scanning; D053758:Nanoparticles / Q000737:chemistry*; D053770:Nanowires; D009946:Organothiophosphorus Compounds / Q000737:chemistry; D010084:Oxidation-Reduction; D010777:Photochemistry; D016062:Porosity; D012834:Silver / Q000737:chemistry* / Q000494:pharmacology*; D013052:Spectrometry, X-Ray Emission; D013193:Stainless Steel; D014025:Titanium / Q000737:chemistry*; D014466:Ultraviolet Rays
D000900:Anti-Bacterial Agents; D007306:Insecticides; D008567:Membranes, Artificial; D009946:Organothiophosphorus Compounds; D013193:Stainless Steel; D012834:Silver; C014655:methamidophos; D014025:Titanium