†School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China.
‡Key Laboratory of Advanced Micro/Nano Functional Materials, Xinyang Normal University, Xinyang 464000, People's Republic of China.
ACS Appl Mater Interfaces. 2015 May 13;7(18):9682-90. doi: 10.1021/acsami.5b01451. Epub 2015 May 1.
Novel graphene-like CuO nanofilms are grown on a copper foam substrate by in situ anodization for multifunctional applications as supercapacitor electrodes and photocatalysts for the degradation of dye pollutants. The as-prepared CuO consists of interconnected, highly crystalline, conductive CuO nanosheets with hierarchical open mesopores and a large surface area. The CuO nanofilms supported on a copper foam are employed as freestanding, binder-free electrodes for supercapacitors, which exhibit wonderful electrochemical performance with a large specific capacitance (919 F g(-1) at 1 A g(-1)), an excellent cycling stability (7% capacitance loss after 5000 cycles), and a good rate capability (748 F g(-1) at 30 A g(-1)). The porous CuO nanofilms also demonstrate excellent photocatalytic activities for degradation of methylene blue, with a degradation rate 99% much higher than 54% of the commercial CuO powders after 60 min. This excellent energy storage and photocatalytic performance of the graphene-like CuO nanofilms can open a new avenue for large-scale applications in energy and environmental fields.
新型类石墨烯 CuO 纳米带通过原位阳极氧化生长在泡沫铜基底上，可作为超级电容器电极和光催化剂应用于多功能领域，用于降解染料污染物。所制备的 CuO 由相互连接的、高度结晶的、导电的 CuO 纳米片组成，具有分级的开放介孔和大的表面积。泡沫铜支撑的 CuO 纳米带作为无粘结剂的超级电容器的自支撑电极，具有出色的电化学性能，比电容（1 A g(-1) 时为 919 F g(-1)）、优异的循环稳定性（5000 次循环后电容损失 7%）和良好的倍率性能（30 A g(-1) 时为 748 F g(-1)）。多孔 CuO 纳米带在降解亚甲基蓝方面也表现出优异的光催化活性，60 分钟后降解率为 99%，远高于商用 CuO 粉末的 54%。这种优异的储能和光催化性能为大规模应用于能源和环境领域开辟了新途径。
