Open Access
Green Energy and Environment, volume 6, issue 6, pages 938-951
Photoreduction of CO2 in the presence of CH4 over g-C3N4 modified with TiO2 nanoparticles at room temperature
Ming Chen
,
Jiachen Wu
,
Chongchong Lu
,
Xiao Luo
,
Yangqiang Huang
,
Bo Hwan Jin
,
Hongxia Gao
,
Xiaowen Zhang
1
,
Morris D. Argyle
2
,
Mohammed J. Al-Marri
1
Department of Chemical and Petroleum Engineering, University of Wyoming, Laramie, Wyoming, 82071, USA
|
2
Department of Chemical Engineering Brigham Young University Provo, Utah 84602, USA
|
Publication type: Journal Article
Publication date: 2021-12-01
Journal:
Green Energy and Environment
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 13.3
ISSN: 20962797, 24680257
Renewable Energy, Sustainability and the Environment
Abstract
CO 2 reduction under simulated sunlight over photocatalysts has become an attractive researcher area recently. In this work, carbon nitride compounds modified by TiO 2 nanoparticles (TNPs) have been used for the photoreduction of CO 2 in the presence of CH 4 at room temperature. Briefly, a series of noble-metal-free TNP-graphitic-carbon nitride (g-C 3 N 4 , also abbreviated CN) photocatalysts with different TNPs loadings and calcination temperatures have been synthesized by a wet-chemical method. The characterization results of XRD, FTIR, SEM, TEM, BET, XPS, CO 2 Adsorption, UV-vis, and PL demonstrate that the BET surface area and CO 2 adsorption capacity have been improved after the calcination. Besides, the g-C 3 N 4 has been successfully coupled with the TNPs and a heterojunction has formed at their interface. These characters contribute to increase the photocatalytic activity of TNPs-CN toward reducing CO 2 in the presence of CH 4 , and its’ performance is better than bare g-C 3 N 4 , Titania (P 25 )–CN, MgO–CN, or Cu 2 O–CN. Orthogonal experiments are then carried out to investigate the sensitivity factors and optimum conditions. The sensitivity results show that the reaction pressure makes little difference on the photocatalysis results, which verifies the photoinduced CO 2 –CH 4 reaction has a tiny change in gas volume. In addition, under the optimum conditions, the turnover frequency (TOF) of CO after 4 h reaction can reach 9.98 μmol g-cat. −1 h −1 , and traces of ethane and ethylene have been detected during the reactions. In addition, surface acetate and carbonaceous deposit are found on the (20)TNPs-CN/450 surface after continuous 24 h irradiation under the optimum conditions, which resulting in the inactivation of the catalyst. Finally, possible reaction mechanisms have been proposed based on the results. CO 2 and CH 4 are possible alternative energy sources. In this work, the noble-metal-free TNP-CN photocatalyst was used to convert them into value added chemicals, such as H 2 , CO, C 2 H 6 , C 2 H 4 and surface acetate.
Top-30
Citations by journals
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1 publication, 3.23%
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1 publication, 3.23%
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1 publication, 3.23%
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1 publication, 3.23%
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1 publication, 3.23%
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1 publication, 3.23%
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1 publication, 3.23%
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1 publication, 3.23%
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1 publication, 3.23%
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1 publication, 3.23%
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1 publication, 3.23%
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1 publication, 3.23%
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1 publication, 3.23%
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1 publication, 3.23%
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1 publication, 3.23%
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1 publication, 3.23%
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1 publication, 3.23%
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1 publication, 3.23%
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1 publication, 3.23%
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Citations by publishers
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Elsevier
15 publications, 48.39%
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Multidisciplinary Digital Publishing Institute (MDPI)
3 publications, 9.68%
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Wiley
3 publications, 9.68%
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Springer Nature
2 publications, 6.45%
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American Chemical Society (ACS)
2 publications, 6.45%
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Royal Society of Chemistry (RSC)
2 publications, 6.45%
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Higher Education Press
1 publication, 3.23%
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KeAi Communications Co.
1 publication, 3.23%
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Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii
1 publication, 3.23%
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- We do not take into account publications without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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Chen M. et al. Photoreduction of CO2 in the presence of CH4 over g-C3N4 modified with TiO2 nanoparticles at room temperature // Green Energy and Environment. 2021. Vol. 6. No. 6. pp. 938-951.
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Chen M., Wu J., Lu C., Luo X., Huang Y., Jin B. H., Gao H., Zhang X., Argyle M. D., Al-Marri M. J. Photoreduction of CO2 in the presence of CH4 over g-C3N4 modified with TiO2 nanoparticles at room temperature // Green Energy and Environment. 2021. Vol. 6. No. 6. pp. 938-951.
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RIS
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TY - JOUR
DO - 10.1016/j.gee.2020.07.001
UR - https://doi.org/10.1016/j.gee.2020.07.001
TI - Photoreduction of CO2 in the presence of CH4 over g-C3N4 modified with TiO2 nanoparticles at room temperature
T2 - Green Energy and Environment
AU - Chen, Ming
AU - Wu, Jiachen
AU - Lu, Chongchong
AU - Luo, Xiao
AU - Huang, Yangqiang
AU - Jin, Bo Hwan
AU - Gao, Hongxia
AU - Zhang, Xiaowen
AU - Argyle, Morris D.
AU - Al-Marri, Mohammed J.
PY - 2021
DA - 2021/12/01 00:00:00
PB - KeAi Communications Co.
SP - 938-951
IS - 6
VL - 6
SN - 2096-2797
SN - 2468-0257
ER -
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@article{2021_Chen,
author = {Ming Chen and Jiachen Wu and Chongchong Lu and Xiao Luo and Yangqiang Huang and Bo Hwan Jin and Hongxia Gao and Xiaowen Zhang and Morris D. Argyle and Mohammed J. Al-Marri},
title = {Photoreduction of CO2 in the presence of CH4 over g-C3N4 modified with TiO2 nanoparticles at room temperature},
journal = {Green Energy and Environment},
year = {2021},
volume = {6},
publisher = {KeAi Communications Co.},
month = {dec},
url = {https://doi.org/10.1016/j.gee.2020.07.001},
number = {6},
pages = {938--951},
doi = {10.1016/j.gee.2020.07.001}
}
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MLA
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Chen, Ming, et al. “Photoreduction of CO2 in the presence of CH4 over g-C3N4 modified with TiO2 nanoparticles at room temperature.” Green Energy and Environment, vol. 6, no. 6, Dec. 2021, pp. 938-951. https://doi.org/10.1016/j.gee.2020.07.001.