Tri‐s‐triazine‐Based Crystalline Carbon Nitride Nanosheets for an Improved Hydrogen Evolution

Tri‐s‐triazine‐based crystalline carbon nitride nanosheets (CCNNSs) have been successfully extracted via a conventional and cost‐effective sonication–centrifugation process. These CCNNSs possess a highly defined and unambiguous structure with minimal thickness, large aspect ratios, homogeneous tri‐s...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2017-06, Vol.29 (22), p.n/a
Main Authors: Ou, Honghui, Lin, Lihua, Zheng, Yun, Yang, Pengju, Fang, Yuanxing, Wang, Xinchen
Format: Article
Language:English
Subjects:
Carbon
Carbon nitride
Carbon nitrides
crystalline carbon nitride
Crystallinity
Energy storage
few‐layered nanosheets
Hydrogen evolution
Hydrogen production
Hydrogen storage
Medical imaging
Methanol
Nanosheets
Nitrides
Photocatalysis
Quantum efficiency
Raw materials
Thickness
tri‐s‐triazine
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Summary:Tri‐s‐triazine‐based crystalline carbon nitride nanosheets (CCNNSs) have been successfully extracted via a conventional and cost‐effective sonication–centrifugation process. These CCNNSs possess a highly defined and unambiguous structure with minimal thickness, large aspect ratios, homogeneous tri‐s‐triazine‐based units, and high crystallinity. These tri‐s‐triazine‐based CCNNSs show significantly enhanced photocatalytic hydrogen generation activity under visible light than g‐C3N4, poly (triazine imide)/Li+ Cl–, and bulk tri‐s‐triazine‐based crystalline carbon nitrides. A highly apparent quantum efficiency of 8.57% at 420 nm for hydrogen production from aqueous methanol feedstock can be achieved from tri‐s‐triazine‐based CCNNSs, exceeding most of the reported carbon nitride nanosheets. Benefiting from the inherent structure of 2D crystals, the ultrathin tri‐s‐triazine‐based CCNNSs provide a broad range of application prospects in the fields of bioimaging, and energy storage and conversion. Tri‐s‐triazine‐based crystalline carbon nitride nanosheets are successfully extracted via a simple and cost‐effective sonication–centrifugation process. Benefiting from the inherent structure of 2D crystals, these few‐layered tri‐s‐triazine‐based crystalline carbon nitride nanosheets show high photocatalytic H2 production activity under visible‐light irradiation, reaching a high apparent quantum efficiency of 8.57% at 420 nm.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201700008