Silver-supporting Diatomite Preparation and Antibacterial Performance Test
The silver-supporting diatomite was prepared by the vacuum heating decomposition method with diatomite as the carrier and AgNO3 solution as the reaction solution.Its structure was characterized by X-ray diffraction (XRD).The factors influencing silver content of diatomite have been discussed in prepared silver-supporting diatomite.The results show that when the mass ratio of diatomite to AgNO3 is 10∶1,the dipping time of 2 hours and the decomposing temperature of 350 ℃ are suitable to preparing silver-supporting diatomite.XRD analyses show that the Ag loaded on the surface and micropore of the diatomite is nano-silver.The antimicrobial effect of silver-supporting diatomite was investigated against Escherichia coli (E.coli).The results show that the silver-supporting diatomite have obvious inhibiting effect on E.coli and its minimum inhibitory concentration decrease with increase of its silver content.The silver-supporting diatomite with the silver content of 1.46% is suitable to kill E.coli in water.
Silver-supporting diatomite Nano-silver XRD Antibacterial effect Escherichia coli
Fene HU Zhijuan Wang Junli Li
College of Chemical & Chemical Engineering,Qujing Normal University,Qujing 655011,P.R.China
国际会议
大理
英文
742-745
2011-08-18（万方平台首次上网日期，不代表论文的发表时间）