以乙酸锌(Zn(CH3COO)2)和草酸(H2C2O4)为原料,采用直接沉淀法,分别在水相和有机相中,制备出两份纳米氧化锌.以它们作为光催化剂,考察了酸性红G水溶液在可见光下的褪色实验和N,N-二甲基乙酰胺(DMAC)水溶液紫外光催化降解实验.实验结果表明:(1)直接沉淀法制备的两份样品,经X衍射和扫描电镜分析是纳米氧化锌;以它们作为光催化剂,都能使酸性红G,在可见光下褪色,褪色速率与ZnO纳米粒度有关.(2)加入纳米氧化锌能够提高DMAC水溶液的紫外降解速率;降解过程中发生了去甲基化反应,产物是N,N-二甲基甲酰胺.
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