New two-dimensional porous graphitic carbon nitride nanosheets for highly efficient photocatalytic hydrogen evolution under visible-light irradiation†,Catalysis Science & Technology

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New two-dimensional porous graphitic carbon nitride nanosheets for highly efficient photocatalytic hydrogen evolution under visible-light irradiation†
Catalysis Science & Technology ( IF 4.4 ) Pub Date : 2018-06-28 00:00:00 , DOI: 10.1039/c8cy00970h
Longshuai Zhang _{1,

2,

3,

4,

5} , Ning Ding _{1,

2,

3,

4,

5} , Jionghua Wu _{1,

2,

3,

4,

5} , Kodai Iwasaki _{6,

7,

8,

9,

10} , Lihua Lin _{11,

12,

13,

14,

15} , Yuichi Yamaguchi _{6,

7,

8,

9,

10} , Yuko Shibayama _{6,

7,

8,

9,

10} , Jiangjian Shi _{1,

2,

3,

4,

5} , Huijue Wu _{1,

2,

3,

4,

5} , Yanhong Luo _{1,

2,

3,

4,

5} , Kazuya Nakata _{6,

7,

8,

9,

10} , Dongmei Li _{1,

2,

3,

4,

5} , Xinchen Wang _{11,

12,

13,

14,

15} , Akira Fujishima _{6,

7,

8,

9,

10} , Qingbo Meng _{1,

2,

3,

4,

5}

Affiliation

Key Laboratory for Renewable Energy, Chinese Academy of Sciences (CAS)
Beijing Key Laboratory for New Energy Materials and Devices
Beijing National Laboratory for Condensed Matter Physics
Institute of Physics, CAS
Beijing 100190
Photocatalysis International Research Center
Research Institute for Science and Technology
Tokyo University of Science
Noda
Japan
State Key Laboratory of Photocatalysis on Energy and Environment
College of Chemistry
Fuzhou University
Fuzhou 350002
China

Aiming at tedious preparation procedures for 2D porous graphitic carbon nitride (2DPCN) nanosheets, a one-step thermal polymerization method based on a supramolecular precursor has been developed. As-prepared 2DPCNs exhibit enlarged specific surface areas with rich reaction sites, better crystallinity, stronger visible-light harvesting capability, aligned energy levels and faster charge transfer. A superior photocatalytic hydrogen evolution rate of 220 μmol h⁻¹ under visible-light (λ > 420 nm) irradiation, has been achieved. In the meantime, an apparent quantum yield of 1.3% at 490 nm is also obtained, indicating that 2DPCN possesses green light activity. Our one-step thermal polymerization method based on a supramolecular precursor provides a new way to develop C₃N₄ photocatalysts with different morphologies and better photoelectric properties.

中文翻译：

新型二维多孔石墨碳氮化碳纳米片，用于在可见光照射下高效光催化制氢†

针对二维多孔石墨氮化碳（2DPCN）纳米片的繁琐制备过程，开发了一种基于超分子前体的一步热聚合方法。制备后的2DPCN具有更大的比表面积，丰富的反应位点，更好的结晶度，更强的可见光收集能力，对齐的能级和更快的电荷转移。在可见光（λ > 420 nm）照射下，实现了220μmolh ^-1的优异光催化氢释放速率。同时，在490nm处还获得了1.3％的表观量子产率，表明2DPCN具有绿光活性。我们基于超分子前体的一步热聚合方法提供了开发C ₃的新途径N ₄光催化剂具有不同的形貌和更好的光电性能。

更新日期：2018-06-28

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