纯水相Ag^(+)/TiO_(2)溶液的制备及其抗菌性能研究  

Preparation and antibacterial properties of pure aqueous Ag^(+)/TiO_(2) solution

作　　者：吴世斌 谢镇泽 王景光 杜昶[1] WU Shibin;XIE Zhenze;WANG Jiangguang;DU Chang(School of Materials Science and Engineering,South China University of Technology,Guangzhou 510006,China)

机构地区：[1]华南理工大学材料科学与工程学院,广州510006

出　　处：《功能材料》2024年第4期4167-4173,共7页Journal of Functional Materials

基　　金：国家重点研发计划项目(2017YFC1105000)。

摘　　要：采用低温液相法制备了纯水相纳米TiO_(2)溶液,然后在纳米TiO_(2)表面沉积Ag^(+)获得了纯水相Ag^(+)/TiO_(2)溶液。通过扫描电子显微镜(SEM)、X射线能谱仪(EDS)、X射线衍射仪(XRD)、X射线光电子能谱仪(XPS)、傅里叶变换红外光谱仪(FT-IR)、紫外-可见光吸收光谱仪(UV-Vis)和荧光光谱仪(PL)进行表征。经过各项表征分析可知,Ag^(+)/TiO_(2)粒子是粒径10 nm的球形颗粒,XRD特征峰为锐钛矿二氧化钛和硫酸银的叠加峰。此外,沉积的Ag以+1的价态存在,且提高了纳米TiO_(2)的光催化活性,产生了协同效应。抗菌测试结果表明,制备的纯水相Ag^(+)/TiO_(2)溶液在不同菌种和不同应用环境下均表现优异的抗菌性能,说明了Ag^(+)/TiO_(2)抗菌的高效性和广谱性,具有极大的市场应用价值。Pure aqueous nano-TiO_(2) solution was prepared by low temperature liquid phase method,and then Ag^(+)was deposited on nano-TiO_(2) surface to obtain pure aqueous Ag^(+)/TiO_(2) solution.It was characterized by scanning electron microscopy(SEM),X-ray energy spectrometer(EDS),X-ray diffractometer(XRD),X-ray photoelectron spectrometer(XPS),Fourier transform infrared spectrometer(FT-IR),Ultraviolet-visible light absorption spectrometer(UV-Vis)and fluorescence spectrometer(PL).After various characterization analysis,it can be seen that Ag^(+)/TiO_(2) particles are spherical particles with a particle size of 10 nm,and the XRD characteristic peak is the superposition peak of anatase titanium dioxide and silver sulfate.In addition,the deposited Ag exists in the valence state of^(+)1,and the photocatalytic activity of nano-TiO_(2) is improved,resulting in a synergistic effect.The results of antibacterial test show that the prepared pure aqueous Ag^(+)/TiO_(2) solution has excellent antibacterial performance in different strains and different application environments,indication the high efficiency and broad spectrum of Ag^(+)/TiO_(2) antibacterial,which has great market application value.

关 键 词：Ag^(+)/TiO_(2)溶液 低温液相 表面沉积 纯水相 抗菌 

分 类 号：TB333[一般工业技术—材料科学与工程] O611.4[理学—无机化学]