采用声化学法,以偏钒酸铵(NH4VO3)和九水硝酸铁(Fe(NO3)3 ·9H2O)为原料制备了FeVO4微晶.利用X射线衍射仪(XRD),扫描电子显微镜(SEM),紫外可见吸收光谱(UV-vis)和示差扫描量热分析(DSC)分别对产物的物相、形貌和光学性能等进行了表征.结果表明:所制备的FeVO4微晶为三斜型结构,超声功率由300 W增加到500 W,微晶尺寸逐渐下降,大小更为均匀.UV-vis分析表明所制备的FeVO4微晶具有较强的吸收可见光特性,且随着超声辐射的功率的增加,粒径减小,禁带宽度由2.17 eV减小到2.08 eV.
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