The activated carbon-supported TiO2 nanoparticles(TiO2/AC)were prepared by a properly controlled sol-gel method.The effects of activated carbons(AC)support on inactivated properties of TiO2 nanoparticles were evaluated by photocatalytic inactivation experiments of Escherichia coli.The key factors affecting the inactivation effciency were investigated,including electric power of lamp, temperature,and pH values.The results show that the TiO2/AC composites have high inactivation properties of E.coli in comparison with pure TiO2 powder.The kinetics of photocatalytic inactivation of E.coli was found to follow a pseudo-first order rate law for TiO2/AC composites,and kinetic behavior could be described in terms of a modified Langmuir-Hinshelwood model.The values of the adsorption equilibrium constants for the bacteria,Kc,and for the rate constants,kr,were certainly depended on TiO2 content.At 47 wt.%TiO2 coatings with the highest rate constant,the Kc and kr were 1.17×10 -8 L/cfu and 1.43×106 cfu/(L·min),respectively.The variety of parameters shows significant effects on inactivation rate.The outer layer of bacteria decomposed first resulting in inactivation of cell,and with further illumination,the cells nearly decomposed.
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机译:利用扫描穿隧显微镜探讨在硒化铟上未氧化表面和氧化表面之介面接合处的电子特性 =Scanning Tunneling Microscope study of InSe Surface Electronic Properties at the Fresh/Oxided Interface Junction
机译:Kinetics of mn-based sorbents for hot gas desulfurization: Task 2 - exploratory experimental studies. Quarterly report, march 15, 1996--June 15, 1996