Preparation and catalytic performance of the Co₃O₄/AAO composite

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• 作者：Yan Zhang ; Xiangxin Zhang ; Xiaoqiang Zhang ; Guanghui Yue ; Dongliang Peng
• 关键词：Nanocomposites ; Co3O4/AAO nanomaterials ; Thin films ; Colloidal monolayer template ; Solution-dipping method
• 刊名：Materials Letters
• 出版年：15 January, 2014
• 年：2014
• 卷：115
• 期：Complete
• 页码：222-225
• 全文大小：1645 K

文摘

The Co₃O₄/AAO composite with novel morphology was successfully prepared by the solution-dipping method and the calcination of cobalt acetate precursor at 400 掳C for 2 h in air. Porous anodic alumina (AAO) thin film was selected as new substrate to support colloidal monolayer template. Scanning electron microscopy (SEM) analysis indicated that the morphology of the as-prepared product could be controlled by changing the concentration of precursor. Catalytic test shows that the obtained Co₃O₄/AAO composite has a high decolorization ratio in the degradation of methylene blue (MB), which reaches 97.79% in 140 min in the presence of sodium borohydride (NaBH₄). Comparative experiments show that this nanomaterial has enhanced catalytic performance.