TY - JOUR
T1 - Effect of conjugation degree and delocalized Π-system on the photocatalytic activity of single layer g-C3N4
AU - Shi, Anye
AU - Li, Huihui
AU - Yin, Shu
AU - Liu, Bin
AU - Zhang, Jiachi
AU - Wang, Yuhua
N1 - Funding Information:
This research was supported by the National Natural Science Foundation of China (51402139), and the Fundamental Research Funds for the Central Universities (lzujbky-2016-129). Thanks to the partial supporting from the JSPS KAKENHI Grant Number JP16H06439 (Grant-in-Aid for Scientific Research on Innovative Areas), the Dynamic Alliance for Open Innovation Bridging Human, Environment and Materials, the Cooperative Research Program of “Network Joint Research Center for Materials and Devices”.
Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017
Y1 - 2017
N2 - Single layer g-C3N4 could be obtained from a protonic acid treatment of g-C3N4 or a new sandwich-like orientation growth of melamine. Through the self-assembly of melamine and polyacrylamide by hydrogen bonds and electrostatic interactions, g-C3N4, with extended planarized atomic single layer, exhibits superiority in both photocatalytic hydrogen evolution and photocatalytic degradation under visible light irradiation. Besides low efficiency, the acid exfoliation will destroy the delocalized π-system by inducing O atoms. The decrease of conjugation degree increases the optical gaps, making it hard for g-C3N4 to capture photons. On the contrary, the facile sandwich-like orientation growth of melamine highly keeps the conjugation degree of g-C3N4 and extends its delocalized π-system. Such single layer g-C3N4 is more active even better than N-doped TiO2 under visible light irradiation.
AB - Single layer g-C3N4 could be obtained from a protonic acid treatment of g-C3N4 or a new sandwich-like orientation growth of melamine. Through the self-assembly of melamine and polyacrylamide by hydrogen bonds and electrostatic interactions, g-C3N4, with extended planarized atomic single layer, exhibits superiority in both photocatalytic hydrogen evolution and photocatalytic degradation under visible light irradiation. Besides low efficiency, the acid exfoliation will destroy the delocalized π-system by inducing O atoms. The decrease of conjugation degree increases the optical gaps, making it hard for g-C3N4 to capture photons. On the contrary, the facile sandwich-like orientation growth of melamine highly keeps the conjugation degree of g-C3N4 and extends its delocalized π-system. Such single layer g-C3N4 is more active even better than N-doped TiO2 under visible light irradiation.
KW - Conjugation degree
KW - Delocalized π-system
KW - Photocatalyst
KW - Single layer
KW - g-CN
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U2 - 10.1016/j.apcatb.2017.06.017
DO - 10.1016/j.apcatb.2017.06.017
M3 - Article
AN - SCOPUS:85021083997
VL - 218
SP - 137
EP - 146
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
SN - 0926-3373
ER -