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采用改进的电化学法制备了ZnO-SnO2纳米复合氧化物粉体,通过XRD、FT-IR、TEM等测试手段,对产物的物相组成、粒径大小、形貌等进行了表征;并考察了该纳米复合粉体的光催化活性。结果表明,得到的产物(氧化锌与氧化锡的复合物)颗粒分布均匀、平均粒径约为30～50nm;该复合氧化物对甲基橙及亚甲基蓝溶液的光催化降解明显优于单纯的ZnO或SnO2;前驱体的焙烧温度以及ZnO和SnO2的复合摩尔比对ZnO-SnO2的光催化活性有较大的影响。
ZnO-SnO2 nanocomposite powders were prepared by the improved electrochemical method. The phase composition, particle size and morphology of the ZnO-SnO2 nanocomposite were characterized by XRD, FT-IR and TEM. The photocatalytic activity of the nano-composite powder. The results show that the obtained product (zinc oxide and tin oxide composite) particles are evenly distributed with an average particle diameter of about 30-50 nm. The photocatalytic degradation of methyl orange and methylene blue solution of the composite oxide is obviously better than that of pure ZnO Or SnO2; the calcination temperature of the precursor and the composite molar ratio of ZnO and SnO2 have a greater impact on the photocatalytic activity of ZnO-SnO2.