采用水热法制备了钙钛矿型化合物Ag-NbO3晶体,对化合物进行粉末X射线表征。Rietveld精修结果表明化合物AgNbO3属于三方晶系,空间群为R-3C。并对化合物进行了扫描电子显微镜（SEM）、BET法测定比表面积和对固体紫外漫反射光谱进行表征。对该化合物的光催化性质进行了测试,在可见光照射下降解染料龙胆紫。结果表明此化合物在室温下具有很高的光催化性质,在光催化性能方面具有潜在的应用价值。%The perovskite-type AgNbO3 crystals was prepared by mild hydrothermal method and determined by powder X-ray diffraction. Rietveld refinements indicate that AgNbO3 crystallize in trigonal system with space group R-3C. The compounds were characterized by scanning electron microscopy （SEM）, brunauer-emmet-tell- er surface area （BET）, XPS, FT-IR and UV-Vis diffuse reflectance spectra （UV-Vis DRS）. The photocatalytic activity of AgNbO3 powders were evaluated by degradation of gentian violet under visible-light irradiation. The results show that the titled compounds have high photocatalytic activity at room temperature and potential fu- ture applications in photocatalysis.
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