Department of Chemistry, National Taiwan University , Taipei 106, Taiwan.
Department of Physics, National Taiwan Normal University , Taipei 116, Taiwan.
ACS Appl Mater Interfaces. 2016 Oct 12;8(40):26690-26696. doi: 10.1021/acsami.6b06520. Epub 2016 Sep 27.
An efficient H evolution catalyst is developed by grafting CoSe nanorods into CN nanosheets. The as-obtained CN-CoSe heterostructure can show excellent performance in H evolution with outstanding durability. To generate phatocathode for photoelectrochemical water splitting CoSe grafted in CN was decorated on the top of p-Si microwires (MWs). p-Si/CN-CoSe heterostructure can work as an efficient photocathode material for solar H production in PEC water splitting. In 0.5 M HSO, p-Si/CN-CoSe can afford photocurrent density -4.89 mA/cm at "0" V vs RHE and it can efficiently work for 3.5 h under visible light. Superior activity of CN-CoSe compared to CoSe toward H evolution is explained with the help of impedance spectroscopy.
通过将 CoSe 纳米棒嫁接到 CN 纳米片上，开发出一种高效的 H 演化催化剂。所得到的 CN-CoSe 异质结构在 H 演化中表现出优异的性能，具有出色的耐久性。为了生成用于光电化学水分解的光阴极，在 CN 上修饰了 CoSe 以接枝在 p-Si 微米线 (MWs) 的顶部。p-Si/CN-CoSe 异质结构可用作光电化学水分解中太阳能 H 生产的高效光阴极材料。在 0.5 M HSO 中，p-Si/CN-CoSe 在“0”V 相对于 RHE 时可提供 -4.89 mA/cm 的光电流密度，并且在可见光下可有效工作 3.5 小时。借助阻抗光谱解释了 CN-CoSe 相对于 CoSe 在 H 演化方面的优越活性。
