CuO纳米片催化H_2O_2氧化降解亚甲基蓝(英文)

Degradation of methylene blue with H_2O_2 over a cupric oxide nanosheet catalyst

以十六烷基三甲基溴化铵(CTAB)为保护剂,采用水热法成功制备了CuO纳米片.将制备的CuO纳米片在H2O2存在下用于催化氧化降解亚甲基蓝,探讨了其在不同反应条件(如温度、氧化剂浓度及催化剂用量)下对亚甲基蓝降解反应的影响.该催化反应符合一级动力学模型,活化能为54.0 kJ/mol.CuO纳米片表现出非常高的催化活性,但其稳定性与重复利用性有待于进一步提高.

Cupric oxide (CuO) nanosheets were prepared by the hydrothermal method with the use of cetyltrimethylammonium bromide(CTAB) and were used as the catalyst for the oxidation degrada- tion of methylene blue with H2 O2.The effects of temperature,oxidant concentration,and catalyst dosage were evaluated.The catalytic reaction obeyed first order kinetics,and the activation energy was 54 kJ/mol.Although the CuO nanosheets show high activity,their stability and reusability still need improvement.