scholarly journals Improving the photocatalytic activity of graphitic carbon nitride by thermal treatment in a high-pressure hydrogen atmosphere

2018 ◽  
Vol 28 (2) ◽  
pp. 183-188 ◽  
Author(s):  
Xiangdong Kang ◽  
Yuyang Kang ◽  
Xingxing Hong ◽  
Zhenhua Sun ◽  
Chao Zhen ◽  
...  
Keyword(s):  
High Pressure ◽  
Photocatalytic Activity ◽  
Thermal Treatment ◽  
Carbon Nitride ◽  
Hydrogen Atmosphere ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Pressure Hydrogen

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.

Cellulose nanofibrils anchored Ag on graphitic carbon nitride for efficient photocatalysis under visible light

2018 ◽  
Vol 5 (9) ◽  
pp. 2129-2143 ◽  
Author(s):  
Cuihua Tian ◽  
Xu Tao ◽  
Sha Luo ◽  
Yan Qing ◽  
Xihong Lu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Carbon Nitride ◽  
Cellulose Nanofibrils ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride

Cellulose nanofibrils were employed to anchor Ag onto a g-C3N4 framework to improve its photocatalytic activity remarkably under visible light.

Photo-accelerated Co3+/Co2+ Transformation on Cobalt and Phosphorus Co-doped g-C3N4 for Fenton-like Reaction

2021 ◽  
Author(s):  
Xiaomei Liu ◽  
Yang Li ◽  
Xiaobin Fan ◽  
Fengbao Zhang ◽  
Guoliang Zhang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Organic Pollutants ◽  
Carbon Nitride ◽  
Reactive Species ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Oxygen Reactive Species ◽  
Co Doped ◽  
Co2 Transformation

Peroxydisulfate (PDS) can be activated by graphitic carbon nitride (g-C3N4) under irradiation, and the generated oxygen reactive species (ROSs) can degrade organic pollutants effectively. However, the photocatalytic activity of pristine...

Silver Doped Graphitic Carbon Nitride for the Enhanced Photocatalytic Activity Towards Organic Dyes

2019 ◽  
Vol 19 (8) ◽  
pp. 5241-5248 ◽  
Author(s):  
Devina Rattan Paul ◽  
Rishabh Sharma ◽  
Priyanka Panchal ◽  
Ritu Malik ◽  
Anshu Sharma ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Carbon Nitride ◽  
Organic Dyes ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride
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