采用溶胶-凝胶方法制备Ag掺杂TiO2,掺杂Ag的摩尔浓度为:1 mol%、2 mol%、5 mol%,利用XRD对Ag不同掺杂浓度的TiO2的晶型结构进行了表征.结果表明:掺杂Ag降低了TiO2从锐钛矿相向金红石相转变的温度,促进了TiO2晶型结构的转变.通过Scherrer公式计算发现,适量的掺杂,可以使具有光催化活性的锐钛矿粒子粒径减小.
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