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首页> 外文期刊>Applied Nanoscience >Highly oriented and physical properties of sprayed anatase Sn-doped TiO2 thin films with an enhanced antibacterial activity
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Highly oriented and physical properties of sprayed anatase Sn-doped TiO2 thin films with an enhanced antibacterial activity

机译：锐钛矿型Sn掺杂TiO2喷涂薄膜的高取向和物理性能，具有增强的抗菌活性

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摘要

Pristine TiO2 and Sn-doped TiO2 thin films with different Sn doping levels (2, 4, 6 and 8?at.%) were deposited by employing a simplified spray pyrolysis technique. The XRD pattern of the films confirmed tetragonal structure with the polycrystalline nature. The films exhibited a pure anatase titanium dioxide (TiO2) with a strong orientation along (101) plane. The scanning electron microscopy image of 6?at.% Sn-doped TiO2 thin film depicted nanosized grains with porous nature. The atomic force microscopy study had shown the columnar arrangement of grains with the increase in particle size and surface roughness for 6?at.% Sn-doped TiO2 thin films. The optical transmittance was increased with the decrease in the optical energy band gap. The optical constants such as extinction coefficient and refractive index were determined. The intensity of the photoluminescence emission was observed at 398?nm for doped films. The resistivity decreased with the increasing carrier concentration and Hall mobility. The incorporation of Sn into TiO2 matrix yielded a well-pronounced antibacterial activity for Bacillus subtilis .
机译：通过简化喷涂工艺沉积了具有不同Sn掺杂水平（2、4、6和8at。％）的原始TiO 2 和Sn掺杂TiO 2 薄膜。热解技术。膜的XRD图谱证实具有多晶性质的四方结构。薄膜表现出沿（101）平面具有强取向的纯锐钛矿型二氧化钛（TiO 2 ）。 6at。％Sn掺杂的TiO 2 薄膜的扫描电子显微镜图像显示了具有多孔性质的纳米晶粒。原子力显微镜研究表明，对于6at。％Sn掺杂的TiO 2 薄膜，随着颗粒尺寸和表面粗糙度的增加，晶粒呈柱状排列。随着光能带隙的减小，光透射率增加。确定诸如消光系数和折射率的光学常数。掺杂膜在398？nm处观察到光致发光强度。电阻率随着载流子浓度和霍尔迁移率的增加而降低。将Sn掺入TiO 2 基质中对枯草芽孢杆菌具有明显的抑菌活性。

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