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采用阳极氧化法在Fe上原位生长直立有序的Fe2O3纳米管阵列,脉冲电沉积法将蜂窝状CuO组装到Fe2O3NTs上,得到CuO HCs/Fe2O3NTs催化剂.结果表明:Fe2O3NTs呈“火山状”规则生长,蜂窝状CuO均匀分布在Fe2O3NTs表面.修饰后,材料的能隙由原来的2.03 eV窄化为1.84 eV.同时发现该催化剂具有优良的光催化还原性能和电催化还原性能,光电催化还原CO2的主要生成产物为甲醇,甲醇在6 h时含量峰值为3.77 mmol/L.该研究对光电催化还原CO2有一定的指导和借鉴意义.
The anodic oxidation of Fe2O3 in situ growth of upright ordered Fe2O3 nanotube array, pulse electrodeposition of honeycomb CuO assembly to Fe2O3NTs, CuO HCs / Fe2O3NTs catalyst was obtained. The results show that: Fe2O3NTs were “volcanic” Regular growth, the honeycomb CuO uniformly distributed on the surface of Fe2O3NTs.After modification, the energy gap of the material narrowed from the original 2.03 eV to 1.84 eV.It was also found that the catalyst has excellent photocatalytic reduction and electrocatalytic reduction, The main product of CO2 is methanol, and the peak value of methanol is 3.77 mmol / L at 6 h.The research has some guidance and references for the photo-catalytic reduction of CO2.