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首页> 外文期刊>Materials Chemistry and Physics >Effect of annealing temperature on Ag nano-composite synthesized by sol-gel
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Effect of annealing temperature on Ag nano-composite synthesized by sol-gel

机译：退火温度对溶胶-凝胶法合成Ag纳米复合材料的影响

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摘要

Composite silicate thin films containing silver nano-particles were prepared on the glass substrate by sol-gel method to investigate the effect of annealing temperature. The sol coated samples were annealed in the oxidative air environment and subsequently reduced in pure hydrogen environment at 400, 500 and 600℃ for the formation of silver nano-particles. Evolution of silver nano-particles in the amorphous SiO_2 matrix as a function of annealing temperature has been studied. Coating structure, morphology and optical properties of nano-particle formation in the matrix were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-vis Spectrophotometery. Spherical, isolated and well dispersed Ag nano-particles with size between 12 and 25 nm were produced. The theoretical model based on diffusion and coalescence predicts the particle sizes close to the experimental values.
机译：通过溶胶-凝胶法在玻璃基板上制备了含银纳米粒子的复合硅酸盐薄膜，研究了退火温度的影响。将溶胶涂覆的样品在氧化性空气环境中退火，然后在400、500和600℃的纯氢气环境中还原，以形成银纳米粒子。研究了纳米银在非晶态SiO_2基体中随退火温度的变化。通过X射线衍射（XRD），扫描电子显微镜（SEM）和紫外可见分光光度计对基质中纳米颗粒形成的涂层结构，形貌和光学性质进行了表征。制备了尺寸在12至25 nm之间的球形，分离且分散良好的Ag纳米颗粒。基于扩散和聚结的理论模型可预测接近实验值的粒径。

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