载银TiO2纳米管阵列的光催化和抗菌性能研究

Photocatalytic and Antibacterial Properties of TiO2 Nanotube Arrays Loaded with Ag Nanoparticals

摘要:

利用阳极氧化法在钛金属基体表面制备高度有序的TiO2纳米管阵列薄膜(TNA)，将其浸泡在AgNO3溶液中，通过紫外光照射，得到Ag纳米颗粒负载在TNA表面的复合结构(Ag-TNA)。采用SEM、EDS、XRD、XPS、UV-Vis光谱等手段对Ag-TNA复合结构进行分析，研究了Ag-TNA复合纳米结构的光催化性能、光电化学性能及抗菌性能。结果表明，相对于TNA，Ag-TNA复合结构表现出更为优良的光电化学活性，同时又具有优良的广谱抗菌性能

Abstract:

TiO2 nanotube arrays (TNA) were fabricated by anodization of Ti in fluoride containing electrolytes. Then Ag-TiO2 nanotube arrays (Ag-TNA) were prepared by loading silver nanoparticles into TiO2 nanotube via photochemical reduction of AgNO3 solution with different Ag contents. The as-prepared samples were characterized by field-emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and UV-Vis diffuse reflectance spectroscopy (UV-Vis). The result shows Ag-TNA have the best efficiency of photocatalytic degradation with methyl blue (MB) as probing molecule in aqueous solution and good anti-bacterial properties.