Electronic Structure Regulations of Polymeric Carbon Nitride via Molecular Engineering for Enhanced Photocatalytic Activity

Solar RRL ◽  
2021 ◽  
pp. 2100569
Author(s):  
Xixiong Jin ◽  
Lingxia Zhang ◽  
Jianlin Shi
Keyword(s):  
Electronic Structure ◽  
Photocatalytic Activity ◽  
Carbon Nitride ◽  
Molecular Engineering ◽  
Polymeric Carbon

Energy gap engineering of polymeric carbon nitride nanosheets for matching with NaYF4:Yb,Tm: enhanced visible-near infrared photocatalytic activity

2016 ◽  
Vol 52 (3) ◽  
pp. 453-456 ◽  
Author(s):  
Xuefeng Li ◽  
Hao Ren ◽  
Zhijuan Zou ◽  
Jiaojiao Sun ◽  
Jingyu Wang ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Photocatalytic Activity ◽  
Carbon Nitride ◽  
Near Infrared ◽  
Energy Gap ◽  
Emission Energy ◽  
Highly Efficient ◽  
Carbon Nitride Nanosheets ◽  
Polymeric Carbon

A highly efficient visible-NIR photocatalyst: the electronic structure of CN nanosheets is engineered to match well with the emission energy of UCPs.

Doping-induced enhancement of crystallinity in polymeric carbon nitride nanosheets to improve their visible-light photocatalytic activity

Nanoscale ◽  
2019 ◽  
Vol 11 (14) ◽  
pp. 6876-6885 ◽  
Author(s):  
Yuan-Yuan Li ◽  
Bing-Xin Zhou ◽  
Hua-Wei Zhang ◽  
Shao-Fang Ma ◽  
Wei-Qing Huang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Carbon Nitride ◽  
Structural Defects ◽  
Two Dimensional ◽  
Utilization Ratio ◽  
Carbon Nitride Nanosheets ◽  
Polymeric Carbon ◽  
Visible Light Photocatalytic

Structural defects can greatly inhibit electron transfer in two-dimensional (2D) layered polymeric carbon nitride (CN), seriously lowering its utilization ratio of photogenerated charges during photocatalysis.

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.

Molecular engineering of polymeric carbon nitride: advancing applications from photocatalysis to biosensing and more

2018 ◽  
Vol 47 (7) ◽  
pp. 2298-2321 ◽  
Author(s):  
Zhixin Zhou ◽  
Yuye Zhang ◽  
Yanfei Shen ◽  
Songqin Liu ◽  
Yuanjian Zhang
Keyword(s):  
Carbon Nitride ◽  
Molecular Engineering ◽  
Molecular Structures ◽  
Polymeric Carbon

Different designs and constructions of molecular structures of carbon nitride for emerging applications, such as biosensing, are discussed.

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