A general strategy via chemically covalent combination for constructing heterostructured catalysts with enhanced photocatalytic hydrogen evolution

2019 ◽  
Vol 55 (29) ◽  
pp. 4150-4153 ◽  
Author(s):  
Gang Zhou ◽  
Ling-Ling Zheng ◽  
Dengke Wang ◽  
Qiu-Ju Xing ◽  
Fei Li ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Evolution ◽  
Carbon Nitride ◽  
General Strategy ◽  
Covalent Organic Frameworks ◽  
Photocatalytic Hydrogen Evolution

A general strategy via chemically covalent combination was reported to fabricate heterostructures of carbon nitride/covalent organic frameworks (CN/COFs), which show superior photocatalytic activity and higher stability.

Cobalt ion redox and conductive polymers boosted the photocatalytic activity of the graphite carbon nitride–Co3O4 Z-scheme heterostructure

2021 ◽  
Vol 45 (1) ◽  
pp. 162-168
Author(s):  
Tao Li ◽  
Jiandong Cui ◽  
Yezhan Lin ◽  
Kecheng Liu ◽  
Rui Li ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Synergistic Effect ◽  
Hydrogen Evolution ◽  
Carbon Nitride ◽  
Conductive Polymers ◽  
Cobalt Ion ◽  
Photocatalytic Hydrogen Evolution ◽  
Conductive Polyaniline

The enhanced photocatalytic hydrogen evolution performance of g-C3N4–Co3O4 2D–1D Z-scheme heterojunctions was achieved through the synergistic effect of the cobalt ion redox, conductive polyaniline, and a Co3O4 nanobelt.

The doping of phosphorus atoms into graphitic carbon nitride for highly enhanced photocatalytic hydrogen evolution

2019 ◽  
Vol 7 (18) ◽  
pp. 11506-11512 ◽  
Author(s):  
Xiao-Xiang Fang ◽  
Liu-Bo Ma ◽  
Kuang Liang ◽  
Sheng-Jie Zhao ◽  
Yi-Fan Jiang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Evolution ◽  
Electron Donor ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Photocatalytic Hydrogen Evolution

The introduction of phosphorus atoms, as an electron donor, effectively enhance the photocatalytic activity.

Enhanced photocatalytic hydrogen evolution over a heterojunction composed of silver cyanamide and graphitic carbon nitride

2018 ◽  
Vol 42 (19) ◽  
pp. 16005-16012 ◽  
Author(s):  
Chunpeng Bai ◽  
Jingce Bi ◽  
Junbiao Wu ◽  
Yide Han ◽  
Xia Zhang
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Evolution ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Simulated Sunlight ◽  
Sunlight Irradiation ◽  
Photocatalytic Hydrogen Evolution ◽  
Excellent Photocatalytic Activity

A semiconductor heterojunction composed of silver cyanamide (Ag2NCN) and graphitic carbon nitride (g-C3N4) exhibited excellent photocatalytic activity for hydrogen evolution under simulated sunlight irradiation.

Tuning of the Oxygen Species Linker on the Surface of Polymeric Carbon Nitride to Promote the Photocatalytic Hydrogen Evolution Performance

ChemSusChem ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3605-3613 ◽  
Author(s):  
Qin Lei ◽  
Rongzhi Chen ◽  
Yurong Zhao ◽  
Huanyu Chen ◽  
Xinxin Long ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Carbon Nitride ◽  
Oxygen Species ◽  
Photocatalytic Hydrogen Evolution ◽  
Polymeric Carbon

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.

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...

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