期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 190, 期 -, 页码 93-102出版社
ELSEVIER
DOI: 10.1016/j.apcatb.2016.03.002
关键词
Porous carbon nitride nanosheets; In situ ion-intercalated exfoliation; Hydrogen production; Electronic structure
资金
- Natural Science Foundation [51172187]
- SPDRF [20116102130002]
- 111 Program of MOE [B08040]
- Xi'an Science and Technology Foundation [CXY1510-2]
- NPU Graduate Seeding Foundation
- Fundamental Research Funds for the Central Universities of China [3102014JGY01004]
- SKLP Foundation [KP201421]
Two-dimension layered polymeric carbon nitride possessing unique electronic structure and high specific surface area exhibits immense potentials for visible light driven photocatalytic activity for hydrogen production by the decomposition of water molecules. Herein, porous polymeric carbon nitride nanosheets were obtained by lithium chloride ions in situ intercalating bulk materials in thermal polycondensation process and followed by liquid exfoliation in water. The porous nanosheets show two-dimension layered structure with the thickness of 2-3 nm, a high density in-plane pores with 2-3 nm diameter, a higher surface area (186.3 m(2)g(-1)), enlarged bandgap (by 0.16 eV), prolonged charge carrier lifetime, enhanced electronic transport ability, increased charge carrier density and improved photocurrent responses, which could significantly give rise to photocatalytic activity. The results highlight the crucial role of 2D porous structure, high specific surface area and unique electronic structure on the photocatalytic performance of polymeric carbon nitride materials. (C) 2016 Elsevier B.V. All rights reserved.
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