An Li, Zhou Panpan, Yin Jie, Liu He, Chen Fengjuan, Liu Hongyan, Du Yaping, Xi Pinxian
†Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, and The Research Center of Biomedical Nanotechnology, Lanzhou University, Lanzhou 730000, P. R. China.
‡Frontier Institute of Chemistry, Frontier Institute of Science and Technology Jointly with College of Science, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, P. R.China.
Inorg Chem. 2015 Apr 6;54(7):3281-9. doi: 10.1021/ic502920r. Epub 2015 Mar 23.
The synthesis of semiconducting nanoplates (NPs) with defined crystal phase is of particular interest, especially their intriguing properties related to the size, shape, and crystal phase. Herein, a liquid-state transformation process from hexagonal-phase CuS NPs is employed to fabricate the cubic-phase Cu2S NPs. The CuS NPs were converted into Cu2S NPs but maintained the morphology. The Cu2S NPs exhibit better oxygen evolution reaction (OER) activity than CuS NPs. Furthermore, the OER activity of Cu2S NPs can be improved by the addition of a glycine (Gly) solution. The Cu2S NPs with Gly in a phosphate buffer solution exhibit excellent OER activity and durability, which approaches that of the best known commercial Ir/C (20%) nanocatalyst. In this work, a good strategy for fabricating a noble-metal-free OER catalyst has been proposed, which could provide insight into developing new water oxidation catalysts with high activity.
合成具有特定晶相的半导体纳米片（NPs）尤其令人感兴趣，特别是其与尺寸、形状和晶相相关的有趣特性。在此，采用从六方相硫化铜纳米颗粒的液态转变过程来制备立方相硫化亚铜纳米颗粒。硫化铜纳米颗粒被转化为硫化亚铜纳米颗粒，但保持了形态。硫化亚铜纳米颗粒表现出比硫化铜纳米颗粒更好的析氧反应（OER）活性。此外，通过添加甘氨酸（Gly）溶液可以提高硫化亚铜纳米颗粒的析氧反应活性。在磷酸盐缓冲溶液中含有甘氨酸的硫化亚铜纳米颗粒表现出优异的析氧反应活性和耐久性，接近最著名的商业Ir/C（20%）纳米催化剂。在这项工作中，提出了一种制备无贵金属析氧反应催化剂的良好策略，这可为开发具有高活性的新型水氧化催化剂提供思路。
