Using corn stalk as template, FeVO4 photocatalysts were prepared by the sol-gel method. The as-prepared samples were characterized by XRD, FTIR,SEM and BET. The photocatalytic activity under visible light was evaluated by photocatalytic degradation of methyl orange(MO) in the solution. It was found that the samples calcinated at 55℃ for 4 h had the flake structure, which is the copy of the corn stakl micro-structure and had the best photocatalytic activity. The decolorization rate of methyl orange can reach 80% or so, increased 34% than that of sample that prepared with no corn stalk template. It indicated that the sample' s morphology was the main reason of higher photocatalytic activity.%以玉米秸秆为模板,采用溶胶-凝胶法制备FeVO4新型光催化剂,并采用XRD、FTIR、SEM和BET等手段对其物相、表面形貌和比表面积等进行分析表征.以甲基橙水溶液为光催化降解对象,考察样品在可见光作用下的光催化活性.结果表明:制备的光催化剂均为三斜型FeVO4,当以玉米秸秆为模板,550℃煅烧4h时制备的样品较好的复制了玉米秸秆的微观片状结构,在18W荧光灯下光照12h对甲基橙溶液的脱色率达80％左右,较未以模板制备的FeVO4提高34％左右.分析表明,光催化剂的形貌是其光催化活性提高的主要原因.
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