Graphitic carbon nitride nanoribbons: graphene-assisted formation and synergic function for highly efficient hydrogen evolution.
Graphitic carbon nitride nanoribbons: graphene-assisted formation and synergic function for highly efficient hydrogen evolution.
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DOI：
10.1002/anie.201409080
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发表时间：
2014-12
影响因子：
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通讯作者：
Yang Zhao;Fei Zhao;Xiaopeng Wang;Chenyu Xu;Zhipan Zhang;G. Shi;L. Qu
中科院分区：
文献类型：
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作者：
Yang Zhao;Fei Zhao;Xiaopeng Wang;Chenyu Xu;Zhipan Zhang;G. Shi;L. Qu
开发新型无金属催化剂对电催化析氢反应具有重要意义。本文采用一步水热法制备了一维石墨碳氮化物（g-C3 N4）纳米带与二维石墨烯片的三维结构。由于电荷和质量传输的多途径，分级结构的g-C3 N4纳米带-石墨烯杂化物导致对HER的高电催化能力，具有54 mV decade（-1）的塔菲尔斜率，80 mV的低起始过电位和207 mV的接近10 mA cm（-2）的电流的过电位，上级于以往报道的非金属材料和成熟的金属催化剂。本工作为设计和开发高效的无金属析氢催化剂提供了一个很大的进展。
The development of new promising metal-free catalysts is of great significance for the electrocatalytic hydrogen evolution reaction (HER). Herein, a rationally assembled three-dimensional (3D) architecture of 1D graphitic carbon nitride (g-C3N4) nanoribbons with 2D graphene sheets has been developed by a one-step hydrothermal method. Because of the multipathway of charge and mass transport, the hierarchically structured g-C3N4 nanoribbon-graphene hybrids lead to a high electrocatalytic ability for HER with a Tafel slope of 54 mV decade(-1), a low onset overpotential of 80 mV and overpotential of 207 mV to approach a current of 10 mA cm(-2), superior to those non-metal materials and well-developed metallic catalysts reported previously. This work presents a great advance for designing and developing highly efficient metal-free catalyst for hydrogen evolution.