Distinctive improved synthesis and application extensions graphdiyne for efficient photocatalytic hydrogen evolution
Distinctive improved synthesis and application extensions graphdiyne for efficient photocatalytic hydrogen evolution
复制标题
独特改进的石墨二炔合成和应用扩展，可实现高效光催化析氢
DOI：
10.1002/cctc.201902405
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发表时间：
2020
期刊：
影响因子：
4.5
通讯作者：
Zhiliang Jin
中科院分区：
文献类型：
--
作者：
Yanbing Li;Hao Yang Guorong Wang Bingzhen Ma;Zhiliang Jin
石墨二炔（Graphdiyne，GD）是一种新型的二维碳杂化材料，自2010年由李玉良教授成功合成以来，因其独特而优异的性能受到广泛关注。传统上，其合成方法是在铜箔或泡沫铜上生长石墨二炔作为基础催化材料，以在吡啶条件下传递铜离子（Cu 2+）。本文报道了以Cu+离子为催化剂的石墨烯制备方法的创新性进展及其在光催化水裂解制氢中的应用。 具体地，通过使用碘化亚铜作为催化剂-载体在单体己炔基苯的吡啶溶液中生长石墨二炔，并且这种CuI-石墨二炔复合催化剂直接应用于原位光催化制氢。 GD和CuI的产氢量分别为29.42 μmol/5 h和156.49 μmol/5 h。 其中，复合催化剂GD-CuI的光催化产氢活性最高（465.95 μmol/5 h），分别是GD和CuI的15.8倍和3.0倍。 这种合理的设计，一步构建GD-CuI，成功增强了光催化析氢活性。对TEM、SEM、XPS、XRD、维斯DRS、瞬态光电流和FT-IR等更深层次的表征研究结果进行了充分的研究，其结果相互吻合。
Graphdiyne (GD), a novel two‐dimension carbon hybrid material, due to its unique and excellent properties, has been widely concerned since this innovative material was successfully synthesized by Prof. Yuliang Li in 2010. Traditionally, its synthesis method is growing graphdiyne on copper foils or foam copper as a base catalytic material to deliver copper ions (Cu2+) under pyridine conditions. Here, an innovative progress for graphdiyne preparation approach of using Cu+ion as a catalytic material is reported and its application in extending to the photocatalytic water‐splitting to produce hydrogen in situ as well. In detail, by means of cuprous iodide used as a catalyst‐carrier to grow a graphdiyne in a pyridine solution of monomeric hexynylbenzene and such CuI‐graphdiyne composite catalyst is directly applied to photocatalytic hydrogen production in situ. Meanwhile, the hydrogen production of GD and CuI are 29.42 μmol/5 h and 156.49 μmol/5 h, respectively. In particular, the composite catalyst GD‐CuI exhibits an optimum photo‐catalytic hydrogen production activity (465.95 μmol/5 h) which is 15.8 times and 3.0 times that of pure GD and CuI respectively. This rational design, one‐step construction of GD‐CuI, successfully enhances photo‐catalytic hydrogen evolution activity. The deeper characterization study results such as TEM, SEM, XPS, XRD, UV‐vis DRS, Transient photocurrent and FT‐IR etc. have been well researched and the results of which are in good agreement with each other.