Double defects modified carbon nitride nanosheets with enhanced photocatalytic hydrogen evolution

2018 ◽  
Vol 20 (25) ◽  
pp. 17471-17476 ◽  
Author(s):  
Guilan Xu ◽  
Jianchen Shen ◽  
Shumei Chen ◽  
Yujie Gao ◽  
Huabin Zhang ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Hydrogen Evolution ◽  
Light Absorption ◽  
Carbon Nitride ◽  
Photocatalytic Performance ◽  
Photocatalytic Hydrogen Evolution ◽  
Carrier Transfer ◽  
Carbon Nitride Nanosheets

g-C3N4-based photocatalysts with double defects extend light absorption and promote charge carrier transfer and separation, significantly improving photocatalytic performance.

Effect of carbon and nitrogen double vacancies on the improved photocatalytic hydrogen evolution over porous carbon nitride nanosheets

2021 ◽  
Author(s):  
Huihui Li ◽  
Fuchun Ning ◽  
Xiaofei Chen ◽  
Anye Shi
Keyword(s):  
Hydrogen Evolution ◽  
Porous Carbon ◽  
Carbon Nitride ◽  
Soft Template ◽  
One Pot ◽  
Photocatalytic Hydrogen Evolution ◽  
Carbon And Nitrogen ◽  
Minimal Thickness ◽  
Carbon Nitride Nanosheets

Porous carbon nitride nanosheets with carbon and nitrogen double vacancies have been synthesized by soft template-supported one-pot method. Besides a highly defined and unambiguous structure, it also shows minimal thickness...

Highly Crystalline Carbon Nitride Nanosheets for Ultrahigh Photocatalytic Hydrogen Evolution

ChemPhotoChem ◽  
2018 ◽  
Vol 2 (6) ◽  
pp. 490-497 ◽  
Author(s):  
Yang Wang ◽  
Xudong Hou ◽  
Junxiang Zhang ◽  
Tingting Xu ◽  
Shengjun Liu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Carbon Nitride ◽  
Photocatalytic Hydrogen Evolution ◽  
Carbon Nitride Nanosheets

scholarly journals In situ structural modification of graphitic carbon nitride by alkali halides and influence on photocatalytic activity

RSC Advances ◽  
2017 ◽  
Vol 7 (52) ◽  
pp. 32592-32600 ◽  
Author(s):  
Yan Xu ◽  
Yinyan Gong ◽  
Hui Ren ◽  
Wenbo Liu ◽  
Lengyuan Niu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Charge Carrier ◽  
Basal Plane ◽  
Carbon Nitride ◽  
Structural Modification ◽  
Photocatalytic Performance ◽  
Alkali Halides ◽  
Thermal Condensation ◽  
Carrier Transfer

Introducing alkali halides during thermal condensation of melamine disturbs periodic ordering in the basal plane, reduces the band gap, and facilitates charge carrier transfer and separation, and thus enhances the photocatalytic performance of g-C3N4.

scholarly journals Carbon Self-Doped Carbon Nitride Nanosheets with Enhanced Visible-Light Photocatalytic Hydrogen Production

Catalysts ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 366 ◽  
Author(s):  
Hongwei Wang ◽  
Guiqing Huang ◽  
Zhiwei Chen ◽  
Weibing Li
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Transfer Rate ◽  
Carbon Nitride ◽  
Photocatalytic Performance ◽  
Photocatalytic Hydrogen Production ◽  
Feasible Method ◽  
Carrier Transfer ◽  
Carbon Nitride Nanosheets ◽  
Visible Light Photocatalytic

In this study, we prepared carbon self-doped carbon nitride nanosheets through a glucose synergic co-condensation method. In the carbon self-doped structure, the N atoms in the triazine rings were substituted by C atoms, resulting in enhanced visible-light photocatalytic hydrogen production, which is three-times higher than that of bulk carbon nitride. The enhanced photocatalytic hydrogen production was attributed to the higher charge-carrier transfer rate and widened light absorption range of the carbon nitride nanosheets after carbon self-doping. Thus, this work highlights the importance of carbon self-doping for improving the photocatalytic performance. Meanwhile, it provides a feasible method for the preparation of carbon self-doped carbon nitride without destroying the 2D conjugated backbone structures.

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