期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 27, 期 49, 页码 12649-12658出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202101908
关键词
cross-coupling; cuprous iodide; graphdiyne(g-CnH2n-2); hydrogen evolution reaction; layered double hydroxide; photocatalysis
资金
- Chinese National Natural Science Foundation [22062001]
This study reports an innovative progress in preparing graphdiyne using Cu+ catalyst and coupling it with NiAl-LDH for photocatalytic hydrogen production, resulting in significantly enhanced activity. The successful synthesis of graphdiyne nanosheets by a cross-coupling method is confirmed, leading to improved photocatalytic hydrogen evolution performance.
Graphdiyne (g-CnH2n-2), a novel two-dimension carbon allotrope material composed of a sp- and sp(2)-hybrid carbon network, has been widely explored since it was synthesized for the first time by Li's group in 2010. A series distinct and excellent properties bestow graphdiyne excellent performance in many fields. Here, an innovative progress for preparing graphdiyne by using Cu+ contained material as catalyst is reported and the composite CuI-GD is coupled with flower-like NiAl-LDH to produce H-2 from photocatalytic water splitting. The results of FTIR and Raman spectroscopy together reveal that graphdiyne nanosheets are synthesized successfully by employing a cross-coupling method. Photocatalytic hydrogen evolution performance shows that the hydrogen production activity of CuI-GD/NiAl-LDH has a 15- and 216-fold enhancement compared with CuI-GD and NiAl-LDH, respectively. A series of characterizations are carried out to expound the underlying reasons in the enhancement of the photocatalytic hydrogen production performance of CuI-GD/NiAl-LDH. Meanwhile, a possible mechanism for the photocatalytic hydrogen evolution process was proposed to understand the interaction among these materials.
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