Citation: CHENG Ruo-Lin, JIN Xi-Xiong, FAN Xiang-Qian, WANG Min, TIAN Jian-Jian, ZHANG Ling-Xia, SHI Jian-Lin. Incorporation of N-Doped Reduced Graphene Oxide into Pyridine-Copolymerized g-C₃N₄ for Greatly Enhanced H₂ Photocatalytic Evolution[J]. Acta Physico-Chimica Sinica, ;2017, 33(7): 1436-1445. doi: 10.3866/PKU.WHXB201704076 shu

Incorporation of N-Doped Reduced Graphene Oxide into Pyridine-Copolymerized g-C₃N₄ for Greatly Enhanced H₂ Photocatalytic Evolution

CHENG Ruo-Lin ^1,2, ,
JIN Xi-Xiong ^1,2 ,
FAN Xiang-Qian ^1,2 ,
WANG Min ^1,2 ,
TIAN Jian-Jian ^1,2 ,
ZHANG Ling-Xia ^1,2 ,
SHI Jian-Lin ^1,2

1.
State Key Laboratory of High Performance Ceramics and Superfine Microstruture, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P. R. China;
2.
University of Chinese Academy of Sciences, Beijing 100049, P. R. China

Received Date: 27 December 2016
Revised Date: 15 March 2017

Fund Project: The project was supported by the State Key Program for Basic Research of China (2013CB933200).

Here, we fabricated a pyridine-copolymerized g-C₃N₄ by a novel and cost-effective approach based on Schiff-base chemistry. Thus produced g-C₃N₄ showed significantly enhanced and stable visible-light photocatalytic H₂ evolution performance compared to pristine g-C₃N₄ obtained from urea. Subsequently, we constructed a composite of pyridine-modified g-C₃N₄ and N-doped reduced graphene oxide (N-rGO) by facile one-pot calcination to elevate the photocatalytic efficiency further. The peak H₂ production rate achieved using this composite was 304 μmol·h^-1, about 11.7 and 3.1 times as those obtained using pure g-C₃N₄ and pyridine-modified g-C₃N₄, respectively. In addition to enhanced visible light absorbance and enlarged surface area, the promoted separation, transfer, and surface reactivity of photogenerated charge carriers by the pyridine ring as intramolecular electron acceptor and N-rGO as "electron-transfer activation region" are considered responsible for the remarkably enhanced photocatalytic activity.
- Photocatalysis,
- Graphitic carbon nitride,
- Copolymerization,
- Hydrogen evolution,
- Nanocomposite
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Incorporation of N-Doped Reduced Graphene Oxide into Pyridine-Copolymerized g-C3N4 for Greatly Enhanced H2 Photocatalytic Evolution

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通讯作者: 陈斌, bchen63@163.com

Incorporation of N-Doped Reduced Graphene Oxide into Pyridine-Copolymerized g-C₃N₄ for Greatly Enhanced H₂ Photocatalytic Evolution