Potassium/oxygen co-doped polymeric carbon nitride for enhanced photocatalytic CO2 reduction

2021 ◽  
pp. 150310
Author(s):  
Yanting Hou ◽  
Honghao Guan ◽  
Jiaguo Yu ◽  
Shaowen Cao
Keyword(s):  
Carbon Nitride ◽  
Co2 Reduction ◽  
Polymeric Carbon ◽  
Co Doped

scholarly journals Tailoring the Grain Boundary Chemistry of Polymeric Carbon Nitride for Enhanced Solar Hydrogen Production and CO2 Reduction

2019 ◽  
Vol 131 (11) ◽  
pp. 3471-3475 ◽  
Author(s):  
Guigang Zhang ◽  
Guosheng Li ◽  
Tobias Heil ◽  
Spiros Zafeiratos ◽  
Feili Lai ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Grain Boundary ◽  
Carbon Nitride ◽  
Co2 Reduction ◽  
Solar Hydrogen ◽  
Solar Hydrogen Production ◽  
Boundary Chemistry ◽  
Polymeric Carbon

scholarly journals Conjugated Electron Donor–Acceptor Hybrid Polymeric Carbon Nitride as a Photocatalyst for CO2 Reduction

Molecules ◽  
2019 ◽  
Vol 24 (9) ◽  
pp. 1779 ◽  
Author(s):  
Asif Hayat ◽  
Mati Ur Rahman ◽  
Iltaf Khan ◽  
Javid Khan ◽  
Muhammad Sohail ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Molecular Orbital ◽  
Density Functional ◽  
Carbon Nitride ◽  
Co2 Reduction ◽  
Characterization Methods ◽  
Base Functions ◽  
Activity Performance ◽  
Donor Acceptor ◽  
Polymeric Carbon

This work incorporates a variety of conjugated donor-acceptor (DA) co-monomers such as 2,6-diaminopurine (DP) into the structure of a polymeric carbon nitride (PCN) backbone using a unique nanostructure co-polymerization strategy and examines its photocatalytic activity performance in the field of photocatalytic CO2 reduction to CO and H2 under visible light irradiation. The as-synthesized samples were successfully analyzed using different characterization methods to explain their electronic and optical properties, crystal phase, microstructure, and their morphology that influenced the performance due to the interactions between the PCN and the DPco-monomer. Based on the density functional theory (DFT) calculation result, pure PCN and CNU-DP15.0 trimers (interpreted as incorporation of the co-monomer at two different positions) were extensively evaluated and exhibited remarkable structural optimization without the inclusion of any symmetry constraints (the non-modified sample derived from urea, named as CNU), and their optical and electronic properties were also manipulated to control occupation of their respective highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO). Also, co-polymerization of the donor–acceptor 2,6-diamino-purine co-monomer with PCN influenced the chemical affinities, polarities, and acid–base functions of the PCN, remarkably enhancing the photocatalytic activity for the production of CO and H2 from CO2 by 15.02-fold compared than that of the parental CNU, while also improving the selectivity.

Facile fabrication of oxygen and carbon co-doped carbon nitride nanosheets for efficient visible light photocatalytic H2 evolution and CO2 reduction

2019 ◽  
Vol 48 (32) ◽  
pp. 12070-12079 ◽  
Author(s):  
Shipeng Wan ◽  
Man Ou ◽  
Xinming Wang ◽  
Yanan Wang ◽  
Yiqing Zeng ◽  
...  
Keyword(s):  
Carbon Nitride ◽  
Co2 Reduction ◽  
Mechanistic Study ◽  
H2 Evolution ◽  
Co Doping ◽  
Facile Fabrication ◽  
Carbon Nitride Nanosheets ◽  
Co Doped ◽  
Photocatalytic H2 Evolution ◽  
Visible Light Photocatalytic

C3N4 nanosheets with oxygen and carbon co-doping were successfully designed for H2 evolution and CO2 reduction. A mechanistic study was also performed.

Edge activation of an inert polymeric carbon nitride matrix with boosted absorption kinetics and near-infrared response for efficient photocatalytic CO2 reduction

2020 ◽  
Vol 8 (23) ◽  
pp. 11761-11772 ◽  
Author(s):  
Qiong Liu ◽  
Zhongxin Chen ◽  
Weijian Tao ◽  
Haiming Zhu ◽  
Linxin Zhong ◽  
...  
Keyword(s):  
Activation Energy ◽  
Energy Barrier ◽  
Carbon Nitride ◽  
Near Infrared ◽  
Co2 Reduction ◽  
Absorption Capacity ◽  
Absorption Kinetics ◽  
Activation Energy Barrier ◽  
Polymeric Carbon

The edge-activation of the polymeric carbon nitride matrix by hydroxyethyl groups results in enhanced CO2 absorption capacity and decrease in the CO2 activation energy barrier.

scholarly journals Pyrene-functionalized polymeric carbon nitride with promoted aqueous–organic biphasic photocatalytic CO2 reduction

2019 ◽  
Vol 7 (13) ◽  
pp. 7373-7379 ◽  
Author(s):  
Xuezhong Gong ◽  
Sijia Yu ◽  
Meili Guan ◽  
Xianglin Zhu ◽  
Can Xue
Keyword(s):  
Aqueous Solution ◽  
Organic Phase ◽  
Carbon Nitride ◽  
Co2 Reduction ◽  
Alkene Oxidation ◽  
Polymeric Carbon

Covalently grafting pyrene groups on polymeric carbon nitride enables photocatalytic CO2 reduction in aqueous solution with simultaneous alkene oxidation in organic phase.

Efficient photoreforming of lignocellulose into H2 and photocatalytic CO2 reduction via in-plane surface dyadic heterostructure of porous polymeric carbon nitride

Carbon ◽  
2020 ◽  
Vol 170 ◽  
pp. 199-212 ◽  
Author(s):  
Qiong Liu ◽  
Fuxian Wang ◽  
Yu Jiang ◽  
Wei Chen ◽  
Ren Zou ◽  
...  
Keyword(s):  
Carbon Nitride ◽  
Plane Surface ◽  
Co2 Reduction ◽  
Polymeric Carbon

Regulating morphological and electronic structures of polymeric carbon nitrides by successive copolymerization and stream reforming for photocatalytic CO2 reduction

2021 ◽  
Author(s):  
Ruirui Wang ◽  
Pengju Yang ◽  
Sibo Wang ◽  
Xinchen Wang
Keyword(s):  
Electronic Structures ◽  
Carbon Nitride ◽  
Co2 Reduction ◽  
Carbon Nitrides ◽  
Polymeric Carbon

Greatly reinforced photocatalytic CO2 reduction is realized with carbon nitride polymers tailored via a coupled copolymerization and stream reforming strategy.

scholarly journals FeP modified polymeric carbon nitride as a noble-metal-free photocatalyst for efficient CO2 reduction

2021 ◽  
pp. 106326
Author(s):  
Yangkun Guo ◽  
Qiang Wang ◽  
Min Wang ◽  
Meng Shen ◽  
Lingxia Zhang ◽  
...  
Keyword(s):  
Noble Metal ◽  
Carbon Nitride ◽  
Co2 Reduction ◽  
Metal Free ◽  
Polymeric Carbon

scholarly journals Tailoring the Grain Boundary Chemistry of Polymeric Carbon Nitride for Enhanced Solar Hydrogen Production and CO2 Reduction

2019 ◽  
Vol 58 (11) ◽  
pp. 3433-3437 ◽  
Author(s):  
Guigang Zhang ◽  
Guosheng Li ◽  
Tobias Heil ◽  
Spiros Zafeiratos ◽  
Feili Lai ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Grain Boundary ◽  
Carbon Nitride ◽  
Co2 Reduction ◽  
Solar Hydrogen ◽  
Solar Hydrogen Production ◽  
Boundary Chemistry ◽  
Polymeric Carbon
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