以工业TiOSO4为原料,分别通过水解法和胶溶法制备载银纳米TiO2抗菌竹炭.采用XRD和SEM对样品进行了表征,研究了不同载银量、煅烧温度、TiO2/C和竹炭粒径对抗菌率的影响.结果表明,水解法制备的抗菌竹炭的抗菌效果优于胶溶法制备的抗菌竹炭,控制载银量、煅烧温度、TiO2/C、竹炭粒径分别为2%、500℃、2%、200目时,水解法制备的抗菌竹炭抗菌率最佳;控制载银量、煅烧温度、TiO2/C、竹炭粒径分别为3%、500℃、3%、200目时,胶溶法制备的抗菌竹炭抗菌率最佳.
The nano Ag-TiO2-doped bamboo charcoal is prepared by hydrolysis and sol-gel method with industrial titanic solution respectively. The samples prepared are then characterized using XRD and SEM. The effects of loading silver concentration,calcination temperature, TiO2/C ratio and particle size of bamboo charcoal on the rate of sterilization are investigated. The results show that the antibacterial function of Ag-TiO2-doped bamboo charcoal obtained by hydrolysis is better than that obtained by sol-gel method. The optimal parameters of preparing Ag-TiO2doped bamboo charcoal obtained by hydrolysis are 2% of Ag/TiO2, 500℃ for thermal treatment, 2% of TiO2/C, 200mesh of bamboo charcoal particle size. The optimal parameters of preparing Ag-TiO2-doped bamboo charcoal obtained by sol-gel method are 3% of Ag/TiO2, 500℃ for thermal treatment, 3 % of TiO2/C, 200 mesh of bamboo charcoal particle size.
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