Insight into the Enhanced Hydrogen Evolution Activity of 2,4-Diaminopyrimidine-Doped Graphitic Carbon Nitride Photocatalysts

2019 ◽  
Vol 123 (4) ◽  
pp. 2228-2237 ◽  
Author(s):  
Zehao Li ◽  
Siyu Zhou ◽  
Qian Yang ◽  
Zhengguo Zhang ◽  
Xiaoming Fang
Keyword(s):  
Hydrogen Evolution ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Insight Into

scholarly journals Band Engineering and Morphology Control of Oxygen-Incorporated Graphitic Carbon Nitride Porous Nanosheets for Highly Efficient Photocatalytic Hydrogen Evolution

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Yunyan Wu ◽  
Pan Xiong ◽  
Jianchun Wu ◽  
Zengliang Huang ◽  
Jingwen Sun ◽  
...  
Keyword(s):  
Surface Area ◽  
Hydrogen Evolution ◽  
Carbon Nitride ◽  
Separation Efficiency ◽  
Physical Adsorption ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Photocatalytic Hydrogen Evolution ◽  
Band Engineering ◽  
Highly Efficient

AbstractGraphitic carbon nitride (g-C3N4)-based photocatalysts have shown great potential in the splitting of water. However, the intrinsic drawbacks of g-C3N4, such as low surface area, poor diffusion, and charge separation efficiency, remain as the bottleneck to achieve highly efficient hydrogen evolution. Here, a hollow oxygen-incorporated g-C3N4 nanosheet (OCN) with an improved surface area of 148.5 m2 g−1 is fabricated by the multiple thermal treatments under the N2/O2 atmosphere, wherein the C–O bonds are formed through two ways of physical adsorption and doping. The physical characterization and theoretical calculation indicate that the O-adsorption can promote the generation of defects, leading to the formation of hollow morphology, while the O-doping results in reduced band gap of g-C3N4. The optimized OCN shows an excellent photocatalytic hydrogen evolution activity of 3519.6 μmol g−1 h−1 for ~ 20 h, which is over four times higher than that of g-C3N4 (850.1 μmol g−1 h−1) and outperforms most of the reported g-C3N4 catalysts.

scholarly journals A comparison study of sodium ion- and potassium ion-modified graphitic carbon nitride for photocatalytic hydrogen evolution

RSC Advances ◽  
2021 ◽  
Vol 11 (26) ◽  
pp. 15701-15709
Author(s):  
Siyu Hu ◽  
Anchi Yu ◽  
Rong Lu
Keyword(s):  
Size Effect ◽  
Hydrogen Evolution ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Sodium Ion ◽  
Graphitic Carbon Nitride ◽  
Comparison Study ◽  
Photocatalytic Hydrogen Evolution ◽  
Optical And Electronic Properties ◽  
Ion Size

The ion size effect on graphitic carbon nitride is responsible for variations in its structure, optical and electronic properties, and hence the enhancement in photocatalytic hydrogen evolution.

scholarly journals Hierarchical meso/macro-porous TiO2/graphitic carbon nitride nanofibers with enhanced hydrogen evolution

2021 ◽  
Vol 202 ◽  
pp. 109542
Author(s):  
Xinxin Zou ◽  
Yanling Yang ◽  
Huajun Chen ◽  
Xiao-Lei Shi ◽  
Shaoli Song ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Porous Tio2

Graphitic Carbon Nitride Composites with MoO3-Decorated Co3O4 Nanorods as Catalysts for Oxygen and Hydrogen Evolution

2021 ◽  
Author(s):  
Imtiaz Ahmed ◽  
Rathindranath Biswas ◽  
Ranjit A. Patil ◽  
Krishna Kamal Halder ◽  
Harjinder Singh ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Co3o4 Nanorods
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