Phosphorus- and fluorine-co-doped carbon nitride: modulated visible light absorption, charge carrier kinetics and boosted photocatalytic hydrogen evolution

2021 ◽  
Author(s):  
Pinnan Li ◽  
Mingya Wang ◽  
Shushu Huang ◽  
Yiguo Su
Keyword(s):  
Charge Carrier ◽  
Visible Light ◽  
Band Gap ◽  
Light Absorption ◽  
Carbon Nitride ◽  
Light Response ◽  
Visible Light Absorption ◽  
Visible Light Response ◽  
Band Gap Structure ◽  
Co Doped

A phosphorus and fluorine co-doped carbon nitride photocatalyst was constructed to modulate the band gap structure and visible light response ability of g-C3N4 as well as the photocatalytic H2 evolution activity.

The origin of the enhanced photocatalytic activity of carbon nitride nanotubes: a first-principles study

2017 ◽  
Vol 5 (10) ◽  
pp. 4827-4834 ◽  
Author(s):  
Qian Gao ◽  
Shuanglin Hu ◽  
Yi Du ◽  
Zhenpeng Hu
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Band Gap ◽  
Light Absorption ◽  
First Principles ◽  
Carbon Nitride ◽  
Oxidative Potential ◽  
Visible Light Absorption ◽  
First Principles Study

Being wrapped into nanotubes benefits both the band gap (visible light absorption) and oxidative potential of 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.

Ni-Bi co-doped TiO2 as highly visible light response nano-photocatalyst for CO2 photo-reduction in a batch photo-reactor

2020 ◽  
Vol 41 ◽  
pp. 101289
Author(s):  
Reza Nematollahi ◽  
Cyrus Ghotbi ◽  
Farhad Khorasheh ◽  
Afsanehsadat Larimi
Keyword(s):  
Visible Light ◽  
Light Response ◽  
Doped Tio2 ◽  
Visible Light Response ◽  
Co Doped

Visible light absorption of (Fe, C/N) co-doped NaTaO${}_{3}$: DFT+ U *

2017 ◽  
Vol 26 (8) ◽  
pp. 087102 ◽  
Author(s):  
Peng-Li Tian ◽  
Zhen-Yi Jiang ◽  
Xiao-Dong Zhang ◽  
Bo Zhou ◽  
Ya-Ru Dong ◽  
...  
Keyword(s):  
Visible Light ◽  
Light Absorption ◽  
Visible Light Absorption ◽  
Co Doped

The Photocatalytic Properties of Fe3+ and N Co-Doped TiO2 Micro/Nanofiber Film for Dye Waste Water Decomposition

2011 ◽  
Vol 356-360 ◽  
pp. 853-856 ◽  
Author(s):  
Qiao Zhen Yu ◽  
Xiang Jun Jin ◽  
Shao Yang Li ◽  
Lei Wang ◽  
Kun Long Liang
Keyword(s):  
Waste Water ◽  
Visible Light ◽  
Light Absorption ◽  
Oxygen Demand ◽  
Photocatalytic Efficiency ◽  
Energy Dispersion Spectroscopy ◽  
Visible Light Absorption ◽  
X Ray ◽  
Nano Fiber ◽  
Co Doped

To obtain a TiO2photocatalyst with high photocatalytic efficiency under visible irradiation and good reusability, the Fe3+and N co-doped TiO2micro/nano fiber films were fabricated by electrospinning and calcinations. The morphologies and structures of the resulting samples were analyzed by scanning electron microscopy (SEM), x-ray diffraction and x-ray energy dispersion spectroscopy (EDS). The absorbance and chemical oxygen demand (COD) were characterized respectively by UV–visible spectrophotometer and COD Rapid Tester. The results show that the Fe3+and N co-doped TiO2micro/nano fiber had a multi-porous structure with an average diameter of about 45 to 506 nm. The crystalinity degrees, visible light absorption of these films were affected by the dosage of Fe3+and N co-doping (DFN). Moreover, these films exhibited high photocatalytic activity for the degradation of dye waste water under sunlight and it was related to DFN. As DFN was 0.5 %, it has highest crystalinity degree, largest visible light absorption and highest photocatalytic efficiency on dye waste water. The decolor rate of the dye waste water was as high as 67.6 % and its COD decreased from 2800±200 to 236.40 ± 15.61, when the photocatalytic time was only 3 h.

A facile approach to synthesize N and B co-doped TiO2 nanomaterials with superior visible-light response

2010 ◽  
Vol 64 (15) ◽  
pp. 1728-1731 ◽  
Author(s):  
Guosheng Wu ◽  
Jiali Wen ◽  
Jingpeng Wang ◽  
Dan F. Thomas ◽  
Aicheng Chen
Keyword(s):  
Visible Light ◽  
Light Response ◽  
Doped Tio2 ◽  
Visible Light Response ◽  
Tio2 Nanomaterials ◽  
Co Doped

scholarly journals Sensitization of Perovskite Strontium Stannate SrSnO3towards Visible-Light Absorption by Doping

2014 ◽  
Vol 2014 ◽  
pp. 1-3 ◽  
Author(s):  
Hungru Chen ◽  
Naoto Umezawa
Keyword(s):  
Solar Energy ◽  
Visible Light ◽  
Band Gap ◽  
Light Absorption ◽  
Density Functional Calculations ◽  
Density Functional ◽  
Visible Light Absorption ◽  
Dopant Level ◽  
Strontium Stannate ◽  
Hybrid Density Functional

Perovskite strontium stannate SrSnO3is a promising photocatalyst. However, its band gap is too large for efficient solar energy conversion. In order to sensitize SrSnO3toward visible-light activities, the effects of doping with various selected cations and anions are investigated by using hybrid density functional calculations. Results show that doping can result in dopant level to conduction band transitions which lie lower in energy compared to the original band gap transition. Therefore, it is expected that doping SrSnO3can induce visible-light absorption.

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