Harmonious K-I-O Co-modification of g-C3N4 for Improved Charge Separation and Photocatalysis

2022 ◽  
Author(s):  
Shifei Kang ◽  
Zhihao Zhang ◽  
Maofen He ◽  
Zirou Fang ◽  
Di Sun ◽  
...  
Keyword(s):  
Charge Separation ◽  
Active Sites ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Structural Collapse ◽  
Multistep Reactions

Co-modification of graphitic carbon nitride (g-C3N4) photocatalysts can maximally optimize its intrinsic photoelectric structures, but usually involve complex multistep reactions, thus is challenging because the structural collapse and active sites...

Incorporating p ‐Phenylene as an Electron‐Donating Group into Graphitic Carbon Nitride for Efficient Charge Separation

ChemSusChem ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 4285-4292 ◽  
Author(s):  
Honglin Gao ◽  
Yong Guo ◽  
Zhiwu Yu ◽  
Meiming Zhao ◽  
Yang Hou ◽  
...  
Keyword(s):  
Charge Separation ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Efficient Charge

Novel composites of graphitic carbon nitride and NiO nanosheet arrays as effective photocathodes with enhanced photocurrent performances

RSC Advances ◽  
2016 ◽  
Vol 6 (86) ◽  
pp. 83350-83355 ◽  
Author(s):  
Zhonghao Wang ◽  
Guojun Zou ◽  
Chenchen Feng ◽  
Ying Ma ◽  
Xiaolai Wang ◽  
...  
Keyword(s):  
Charge Separation ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Hole Transfer ◽  
Nanosheet Arrays ◽  
Type Semiconductor ◽  
P Type ◽  
First Time

Novel composites composed of graphitic carbon nitride (GCN) and p-type semiconductor of NiO nanosheet arrays were fabricated for the first time and demonstrated to be efficient photocathodes for enhancing charge separation and hole transfer.

scholarly journals Influence of Hydrogenation on Morphology, Chemical Structure and Photocatalytic Efficiency of Graphitic Carbon Nitride

2021 ◽  
Vol 22 (23) ◽  
pp. 13096
Author(s):  
Daria Baranowska ◽  
Tomasz Kędzierski ◽  
Małgorzata Aleksandrzak ◽  
Ewa Mijowska ◽  
Beata Zielińska
Keyword(s):  
Photocatalytic Activity ◽  
Active Sites ◽  
Chemical Structure ◽  
Carbon Nitride ◽  
Elevated Temperatures ◽  
Hydrogen Atmosphere ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Photocatalytic Efficiency ◽  
Highly Active

In this contribution, the effect of hydrogenation conditions atmosphere (temperature and time) on physicochemical properties and photocatalytic efficiency of graphitic carbon nitride (g-C3N4, gCN) was studied in great details. The changes in the morphology, chemical structure, optical and electrochemical properties were carefully investigated. Interestingly, the as-modified samples exhibited boosted photocatalytic degradation of Rhodamine B (RhB) with the assistance of visible light irradiation. Among modified gCN, the sample annealed at 500 °C for 4 h (500-4) in H2 atmosphere exhibited the highest photocatalytic activity—1.76 times higher compared to pristine gCN. Additionally, this sample presented high stability and durability after four cycles. It was noticed that treating gCN with hydrogen at elevated temperatures caused the creation of nitrogen vacancies on gCN surfaces acting as highly active sites enhancing the specific surface area and improving the mobility of photogenerated charge carriers leading to accelerating the photocatalytic activity. Therefore, it is believed that detailed optimization of thermal treatment in a hydrogen atmosphere is a facile approach to boost the photoactivity of gCN.

Scalable and clean exfoliation of graphitic carbon nitride in NaClO solution: enriched surface active sites for enhanced photocatalytic H2 evolution

2018 ◽  
Vol 20 (6) ◽  
pp. 1354-1361 ◽  
Author(s):  
Lifeng Cui ◽  
Yanfei Liu ◽  
Xueyou Fang ◽  
Chaochuang Yin ◽  
Shasha Li ◽  
...  
Keyword(s):  
Drinking Water ◽  
Active Sites ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
H2 Evolution ◽  
Surface Active ◽  
Photocatalytic H2 Evolution

The challenge of exfoliation of bulk g-C3N4 into nanosheets was tackled using green drinking-water disinfectant NaClO in solution.

Tuning local carbon active sites saturability of graphitic carbon nitride to boost CO2 electroreduction towards CH4

Nano Energy ◽  
2020 ◽  
Vol 73 ◽  
pp. 104833 ◽  
Author(s):  
Zhou Chen ◽  
Min-Rui Gao ◽  
Ya-Qian Zhang ◽  
Nanqi Duan ◽  
Tingting Fan ◽  
...  
Keyword(s):  
Active Sites ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Co2 Electroreduction
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