Nitrogen deficient carbon nitride for efficient visible light driven tetracycline degradation: a combination of experimental and DFT studies

2020 ◽  
Vol 10 (20) ◽  
pp. 6800-6808
Author(s):  
Mier Wang ◽  
Changzheng Fan ◽  
Shuaijun Yang ◽  
Milan Liu ◽  
Jun Luo ◽  
...  
Keyword(s):  
Visible Light ◽  
Light Absorption ◽  
Recombination Rate ◽  
Carbon Nitride ◽  
Photocatalytic Performance ◽  
Graphitic Carbon Nitride ◽  
Dft Studies ◽  
Visible Light Absorption ◽  
Tetracycline Degradation ◽  
Visible Light Driven

The narrow visible-light absorption range and a high recombination rate of photo-excited electrons and holes are the main reasons for the confined photocatalytic performance of graphitic carbon nitride (g-C3N4).

scholarly journals Electrostatic interaction mechanism of visible light absorption broadening in ion-doped graphitic carbon nitride

RSC Advances ◽  
2021 ◽  
Vol 11 (37) ◽  
pp. 22652-22660
Author(s):  
Zengyu Cen ◽  
Yuna Kang ◽  
Rong Lu ◽  
Anchi Yu
Keyword(s):  
Visible Light ◽  
Electrostatic Interaction ◽  
Light Absorption ◽  
Carbon Nitride ◽  
Interaction Mechanism ◽  
Graphitic Carbon ◽  
Electrostatic Attraction ◽  
Graphitic Carbon Nitride ◽  
Visible Light Absorption

H2O2 treated K-doped graphitic carbon nitride presents an enhanced visible light absorption, which is due to the electrostatic attraction between K ions and OOH ions inside graphitic carbon nitride.

scholarly journals Visible-Light Driven TiO2 Photocatalyst Coated with Graphene Quantum Dots of Tunable Nitrogen Doping

Molecules ◽  
2019 ◽  
Vol 24 (2) ◽  
pp. 344 ◽  
Author(s):  
Xiong Sun ◽  
Hui-Jun Li ◽  
Nanquan Ou ◽  
Bowen Lyu ◽  
Bojie Gui ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Light Absorption ◽  
Photocatalytic Performance ◽  
Light Emission ◽  
Graphene Quantum Dots ◽  
Visible Light Absorption ◽  
Visible Light Driven ◽  
Nitrogen Doped Graphene

Nitrogen doped graphene quantum dots (NGQDs) were successfully prepared via a hydrothermal method using citric acid and urea as the carbon and nitrogen precursors, respectively. Due to different post-treatment processes, the obtained NGQDs with different surface modifications exhibited blue light emission, while their visible-light absorption was obviously different. To further understand the roles of nitrogen dopants and N-containing surface groups of NGQDs in the photocatalytic performance, their corresponding composites with TiO2 were utilized to degrade RhB solutions under visible-light irradiation. A series of characterization and photocatalytic performance tests were carried out, which demonstrated that NGQDs play a significant role in enhancing visible-light driven photocatalytic activity and the carrier separation process. The enhanced photocatalytic activity of the NGQDs/TiO2 composites can possibly be attributed to an enhanced visible light absorption ability, and an improved separation and transfer rate of photogenerated carriers.

The role of nitrogen defects in graphitic carbon nitride for visible-light-driven hydrogen evolution

2019 ◽  
Vol 21 (5) ◽  
pp. 2318-2324 ◽  
Author(s):  
Jiawei Xue ◽  
Mamoru Fujitsuka ◽  
Tetsuro Majima
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Light Absorption ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Visible Light Driven ◽  
Negative Factors

Extending the light absorption range of g-C3N4 by introducing N defects may be accompanied by some negative factors for the photocatalytic activity.

scholarly journals Enhanced visible-light-driven photocatalytic performance of porous graphitic carbon nitride

2015 ◽  
Vol 358 ◽  
pp. 270-277 ◽  
Author(s):  
Fei Chang ◽  
Chenlu Li ◽  
Jieru Luo ◽  
Yunchao Xie ◽  
Baoqing Deng ◽  
...  
Keyword(s):  
Visible Light ◽  
Carbon Nitride ◽  
Photocatalytic Performance ◽  
Porous Graphitic Carbon ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Visible Light Driven

scholarly journals Simultaneous layer exfoliation and defect activation in g-C3N4 nanosheets with air-water interfacial plasma: Spectroscopic defects probing with tailored optical properties

2021 ◽  
Author(s):  
Trishamoni Kashyap ◽  
Palash Jyoti Boruah ◽  
Heremba Bailung ◽  
Dirtha Sanyal ◽  
Biswajit Choudhury
Keyword(s):  
Optical Properties ◽  
Visible Light ◽  
Charge Transport ◽  
Transport Properties ◽  
Light Absorption ◽  
Charge Separation ◽  
Carbon Nitride ◽  
Graphitic Carbon Nitride ◽  
Visible Light Absorption ◽  
Carbon Nitride Nanosheets

Defect-activated ultrathin graphitic carbon nitride nanosheets (g-C3N4) show an enhanced visible light absorption, better charge-separation, and facile charge transport properties. These are requisite for the designing of an active photocatalyst....

KNO3-assisted incorporation of K dopants and N defects into g-C3N4 with enhanced visible light driven photocatalytic H2O2 production

2021 ◽  
Author(s):  
Haihua Yang ◽  
Xiaorong Qian ◽  
Na Zhang ◽  
Li Zhang ◽  
Minjie Zhou
Keyword(s):  
Visible Light ◽  
Carbon Nitride ◽  
Photocatalytic Performance ◽  
Thermal Polymerization ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
H2o2 Production ◽  
One Pot ◽  
Visible Light Driven

Doping with heteroatoms and introducing defects are efficient protocols to enhance the photocatalytic performance of graphitic carbon nitride (g-C3N4) for H2O2 production. Herein, a facile one-pot KNO3-assisted thermal polymerization of...

scholarly journals A metal-free 3C-SiC/g-C3N4 composite with enhanced visible light photocatalytic activity

RSC Advances ◽  
2017 ◽  
Vol 7 (63) ◽  
pp. 40028-40033 ◽  
Author(s):  
Hao Xu ◽  
Zhixing Gan ◽  
Weiping Zhou ◽  
Zuoming Ding ◽  
Xiaowei Zhang
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Light Absorption ◽  
Carbon Nitride ◽  
Photocatalytic Performance ◽  
Photogenerated Electron ◽  
Electron Hole ◽  
Visible Light Absorption ◽  
Metal Free ◽  
Visible Light Photocatalytic

Insufficient visible light absorption and fast recombination of the photogenerated electron–hole pairs have seriously hampered the photocatalytic performance of graphitic carbon nitride (g-C3N4) up to now.

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