Construction of brown mesoporous carbon nitride with a wide spectral response for high performance photocatalytic H2 evolution

2021 ◽  
Author(s):  
Jinzhou Chen ◽  
Xianglin Zhu ◽  
Zhifeng Jiang ◽  
Wei Zhang ◽  
Haiyan Ji ◽  
...  
Keyword(s):  
Active Sites ◽  
High Performance ◽  
Carbon Nitride ◽  
Photocatalytic Performance ◽  
Separation Efficiency ◽  
Spectral Response ◽  
2D Structure ◽  
Charge Separation Efficiency ◽  
The Rich ◽  
Mesoporous Carbon Nitride

Two-dimensional graphitic carbon nitride (2D CN) shows superior photocatalytic performance due to the high charge separation efficiency and the rich active sites endowed with the 2D structure. However, the 2D...

Combination of efficient charge separation with the assistance of novel dual Z-scheme system: self-assembly photocatalyst Ag@AgI/BiOI modified oxygen-doped carbon nitride nanosheet with enhanced photocatalytic performance

2018 ◽  
Vol 8 (4) ◽  
pp. 1161-1175 ◽  
Author(s):  
Chao Liang ◽  
Cheng-Gang Niu ◽  
Hai Guo ◽  
Da-Wei Huang ◽  
Xiao-Ju Wen ◽  
...  
Keyword(s):  
Self Assembly ◽  
Charge Separation ◽  
Carbon Nitride ◽  
Photocatalytic Performance ◽  
Separation Efficiency ◽  
The Self ◽  
High Charge ◽  
Efficient Charge ◽  
Charge Separation Efficiency

The self-assembly dual Z-scheme photocatalyst Ag@AgI/BiOI/g-C3N4 was successfully fabricated with high charge separation efficiency.

scholarly journals MXene-Ti3C2 assisted one-step synthesis of carbon-supported TiO2/Bi4NbO8Cl heterostructures for enhanced photocatalytic water decontamination

Nanophotonics ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 2077-2088 ◽  
Author(s):  
Daixun Jiang ◽  
Xun Sun ◽  
Xilu Wu ◽  
Shuai Zhang ◽  
Xiaofei Qu ◽  
...  
Keyword(s):  
Charge Separation ◽  
Photocatalytic Performance ◽  
Separation Efficiency ◽  
Salt Flux ◽  
The Novel ◽  
Water Contaminants ◽  
Photocatalytic Removal ◽  
One Step ◽  
Charge Separation Efficiency ◽  
Perovskite Type

AbstractThe strategy to improve the photocatalytic removal efficiencies towards organic pollutants is still a challenge for the novel Sillen–Aurivillius perovskite type Bi4NbO8Cl. Herein, we report carbon-supported TiO2/Bi4NbO8Cl (C-TiO2/Bi4NbO8Cl) heterostructures with enhanced charge separation efficiency, which were fabricated via molten-salt flux process. The carbon-supported TiO2 particles were derived from MXene Ti3C2 precursors, and attached on plate-like Bi4NbO8Cl, acting as electron-traps to achieve supressed recombination of photo-induced charges. The improved charge separation confers C-TiO2/Bi4NbO8Cl heterostructures superior photocatalytic performance with 53% higher than pristine Bi4NbO8Cl, towards rhodamine B removal with the help of photo-induced holes. Moreover, the C-TiO2/Bi4NbO8Cl heterostructures can be expanded to deal with other water contaminants, such as methyl orange, ciprofloxacin and 2,4-dichlorophenol with 44, 25 and 13% promotion, respectively, and thus the study offers a series of efficient photocatalysts for water purification.

Enhanced photocatalytic hydrogen production from aqueous-phase methanol reforming over cyano-carboxylic bifunctionally-modified carbon nitride

2019 ◽  
Vol 55 (83) ◽  
pp. 12503-12506 ◽  
Author(s):  
Hao Tan ◽  
Peng Kong ◽  
Meixian Liu ◽  
Xianmo Gu ◽  
Zhanfeng Zheng
Keyword(s):  
Hydrogen Production ◽  
Active Sites ◽  
Carbon Nitride ◽  
Separation Efficiency ◽  
Promising Candidate ◽  
Methanol Reforming ◽  
Metal Free ◽  
Carrier Separation ◽  
Polymeric Carbon ◽  
Low Activity

Polymeric carbon nitride is a promising candidate for metal-free photocatalysis, but it is hampered by low activity due to poor carrier separation efficiency and lack of active sites.

scholarly journals Bottom-Up Enhancement of g-C3N4Photocatalytic H2Evolution Utilising Disordering Intermolecular Interactions of Precursor

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Xue Lu Wang ◽  
Wen Qi Fang ◽  
Yu Hang Li ◽  
Pengfei Liu ◽  
Haimin Zhang ◽  
...  
Keyword(s):  
Charge Separation ◽  
Carbon Nitride ◽  
Separation Efficiency ◽  
Weak Interactions ◽  
Bottom Up ◽  
Optical Window ◽  
Design And Optimization ◽  
Final Sample ◽  
Potential Applications ◽  
Charge Separation Efficiency

Disordered intermolecular interaction carbon nitride precursor prepared by water-assisted grinding of dicyandiamide was used for synthesis of g-C3N4. The final sample possesses much looser structure and provides a broadening optical window for effective light harvesting and charge separation efficiency, which exhibits significantly improved H2evolution by photocatalytic water splitting. The bottom-up mechanochemistry method opens new vistas towards the potential applications of weak interactions in the photocatalysis field and may also stimulate novel ideas completely different from traditional ones for the design and optimization of photocatalysts.

ZnIn2S4 nanosheet growth on amine-functionalized SiO2 for the photocatalytic reduction of CO2

2021 ◽  
Author(s):  
Yuqing Shao ◽  
Zhaolin Dou ◽  
Xiaoyu Liang ◽  
Xinxin Zhang ◽  
Min Ji ◽  
...  
Keyword(s):  
Charge Separation ◽  
Active Sites ◽  
Separation Efficiency ◽  
Sustainable Energy ◽  
Photocatalytic Reduction ◽  
Amine Functionalized ◽  
Charge Separation Efficiency ◽  
Reduction Of Co2 ◽  
Low Charge

The photocatalytic reduction of CO2 into valuable fuels and sustainable energy has a promising future, yet remains a challenge due to low charge separation efficiency and inadequate active sites. We...

Surface defect engineering and morphology control of graphitic carbon nitride synergistically improved photocatalytic performance

2021 ◽  
Author(s):  
Tingting Zhang ◽  
Weinan Xing ◽  
haoxin li ◽  
Zhangzhen Cai ◽  
Yichi Zhang ◽  
...  
Keyword(s):  
Solar Energy ◽  
High Performance ◽  
Carbon Nitride ◽  
Surface Defect ◽  
Photocatalytic Performance ◽  
Morphology Control ◽  
Energy Utilization ◽  
Defect Engineering ◽  
Solar Energy Utilization ◽  
New Strategy

Simultaneously exploration surface defect engineering and morphology control are critical for its application in designing high-performance solar energy utilization system. In this study, a new strategy based on the nitrogen...

Construction of Bi2MoO6/g-C3N4 heterostructure with enhanced visible light photocatalytic performance

2021 ◽  
Author(s):  
Guangxin Zhang ◽  
Jianguang Fang ◽  
Haoran Xu ◽  
Jingmiao Hu
Keyword(s):  
Visible Light ◽  
Carbon Nitride ◽  
Photocatalytic Performance ◽  
Separation Efficiency ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Bismuth Molybdate ◽  
Visible Light Photocatalytic

To improve the separation efficiency of photogenerated carriers, heterogeneous photocatalysts were prepared and characterized in this work. Firstly, graphitic carbon nitride (g-C3N4) and bismuth molybdate (Bi2MoO6) were synthesized by thermal...

scholarly journals A Three-Component Hybrid Templated by Asymmetric Viologen Exhibiting Visible-Light-Driven Photocatalytic Degradation on Dye Pollutant in Maritime Accident Seawater

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 640
Author(s):  
Xueqiang Zhuang ◽  
Qiqi Wu ◽  
Xihe Huang ◽  
Haohong Li ◽  
Tianjin Lin ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Performance ◽  
Separation Efficiency ◽  
Dye Degradation ◽  
Chemical Pollutants ◽  
Degradation Ratio ◽  
Visible Light Driven ◽  
Charge Separation Efficiency ◽  
Photocatalytic Material ◽  
Absorption Zone

The increasing dangerous chemical pollutants led by shipping accidents call for the new pollutant treatment strategy. In this work, a new three-component hybrid {[(BiI6)I13]·2I3·(H-BPA)4}n (1) can be used in dye degradation in seawater. The highly interesting feature of 1 lies in its unique 1-D Z-shape [(BiI6)I13]n6− infinite chain constructed from the I···I contacts between mono-nuclear (BiI6)3− anions and I133− polyiodide anions. Finally, the hydrogen bonds between [(BiI6)I13]n6− polyanions and H-BPA2+ cations contribute to the formation a quasi-3-D network. Specifically, 1 exhibits the wide absorption zone from ultraviolet to visible regions and high charge-separation efficiency, hinting its application in visible-light catalysis. As expected, 1 represents photocatalytic activity for the degradation of rhodamine B in seawater with degradation ratio of 90%, and the photocatalytic performance is stable. This work might provide new photocatalytic material for pollutant treatment in shipping accidents.

Carbon nitride based mesoporous materials as cathode matrix for high performance lithium–sulfur batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (16) ◽  
pp. 13572-13580 ◽  
Author(s):  
Xueliang Li ◽  
Congsheng Xu ◽  
Kun Zhao ◽  
Yiyi Wang ◽  
Lisheng Pan
Keyword(s):  
Mesoporous Materials ◽  
Mesoporous Carbon ◽  
High Performance ◽  
Carbon Nitride ◽  
Lithium Sulfur Batteries ◽  
Silica Template ◽  
Mesoporous Carbon Nitride ◽  
Lithium Sulfur

A facile silica template nanocasting method was adopted to effectively synthesize mesoporous carbon nitride (MCN) based materials as cathode matrixes for advanced lithium/sulfur (Li/S) batteries.

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