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Journal of CO2 Utilization, volume 21, pages 327-335

Adsorption investigation of CO2 on g-C3N4 surface by DFT calculation

Publication typeJournal Article
Publication date2017-10-01
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor7.7
ISSN22129820, 22129839
Process Chemistry and Technology
Waste Management and Disposal
Chemical Engineering (miscellaneous)
Abstract
Photocatalytic CO2 reduction is a widely studied approach applied in abating the atmospheric CO2 levels and relieving energy shortage. As the first step in the process of CO2 reduction, CO2 adsorption plays an important role in photocatalytic activity. In the present work, the CO2 adsorption ability of graphitic carbon nitride (g-C3N4) was evaluated by adsorption energy derived from first-principle calculation. To provide a more realistic result, a variety of parameters, including various adsorption sites, separation distances and rotation angles were examined to determine the most stable adsorption system. The results showed that CO2 molecule preferred to adsorb at the two-coordinated nitrogen atom, which contributed to both valance band and conduction band edge. The most negative adsorption energy obtained was −0.4181 eV, which is indicative of physisorption. The electronic properties of the adsorbed system were investigated, including band gap, density of states, work function, the highest occupied molecular orbital and the lowest unoccupied molecular orbital. The effects of molecular number of the adsorbate and layer number of the adsorbent on the adsorption behavior were also examined. This work provides initial and significant reference for the in-depth study of the process of photocatalytic CO2 reduction on g-C3N4.

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GOST Copy
Zhu B. et al. Adsorption investigation of CO2 on g-C3N4 surface by DFT calculation // Journal of CO2 Utilization. 2017. Vol. 21. pp. 327-335.
GOST all authors (up to 50) Copy
Zhu B., Zhang L., Xu D., CHENG B. Adsorption investigation of CO2 on g-C3N4 surface by DFT calculation // Journal of CO2 Utilization. 2017. Vol. 21. pp. 327-335.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1016/j.jcou.2017.07.021
UR - https://doi.org/10.1016/j.jcou.2017.07.021
TI - Adsorption investigation of CO2 on g-C3N4 surface by DFT calculation
T2 - Journal of CO2 Utilization
AU - Zhu, Bicheng
AU - Zhang, Liu-Yang
AU - Xu, Difa
AU - CHENG, BEI
PY - 2017
DA - 2017/10/01 00:00:00
PB - Elsevier
SP - 327-335
VL - 21
SN - 2212-9820
SN - 2212-9839
ER -
BibTex
Cite this
BibTex Copy
@article{2017_Zhu,
author = {Bicheng Zhu and Liu-Yang Zhang and Difa Xu and BEI CHENG},
title = {Adsorption investigation of CO2 on g-C3N4 surface by DFT calculation},
journal = {Journal of CO2 Utilization},
year = {2017},
volume = {21},
publisher = {Elsevier},
month = {oct},
url = {https://doi.org/10.1016/j.jcou.2017.07.021},
pages = {327--335},
doi = {10.1016/j.jcou.2017.07.021}
}
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