Materials Research Bulletin, volume 137, pages 111177

In-situ growth of ultrafine ZnO on g-C3N4 layer for highly active and selective CO2 photoreduction to CH4 under visible light

Publication typeJournal Article
Publication date2021-05-01
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor5.4
ISSN00255408
Condensed Matter Physics
General Materials Science
Mechanical Engineering
Mechanics of Materials
Abstract
• g-C 3 N 4 /ZnO composite is fabricated via refluxing zinc salt solution containing g-C 3 N 4 . • In-situ grown ultrafine ZnO decorated on g-C 3 N 4 thin layers with well-defined interface. • Efficient charge separation and CO 2 adsorption/activation are attained in the composite. • g-C 3 N 4 /ZnO delivers an overall photoactivity and CH 4 selectivity than the g-C 3 N 4 alone. Photocatalytic CO 2 reduction to solar fuels is considered as a promising strategy to address the global warming and energy shortages. Herein, a novel method is proposed to prepare g-C 3 N 4 /ZnO nanocomposites via refluxing zinc salt methanol solution containing pre-formed g-C 3 N 4 with KOH methanol solution as precipitating agent. Some in-situ grown ultrafine ZnO nanoparticles are decorated on ultrathin g-C 3 N 4 layers with well-defined interface, which not only causes efficient charge transfer and separation, but also creates more active sites for CO 2 adsorption and activation. The resultant g-C 3 N 4 /ZnO composites demonstrate significant enhanced CO 2 photoreduction activity and selectivity for CH 4 production under visible light irradiation, and the optimal g-C 3 N 4 /ZnO composite delivers the best overall photoactivity (158.4 μmol g −1 h −1 ) with CH 4 /CO production rates of 19.8/0.37 μmol g −1 h −1 , which is 9.42 times higher than that of g-C 3 N 4 alone. This work provides an ideal synthetic strategy for g-C 3 N 4 -based hybrid materials with highly efficient CO 2 photoreduction.

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Chen C. et al. In-situ growth of ultrafine ZnO on g-C3N4 layer for highly active and selective CO2 photoreduction to CH4 under visible light // Materials Research Bulletin. 2021. Vol. 137. p. 111177.
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Chen C., Jin J., CHEN S., Wang T., Xiao J., Peng T. In-situ growth of ultrafine ZnO on g-C3N4 layer for highly active and selective CO2 photoreduction to CH4 under visible light // Materials Research Bulletin. 2021. Vol. 137. p. 111177.
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RIS Copy
TY - JOUR
DO - 10.1016/j.materresbull.2020.111177
UR - https://doi.org/10.1016/j.materresbull.2020.111177
TI - In-situ growth of ultrafine ZnO on g-C3N4 layer for highly active and selective CO2 photoreduction to CH4 under visible light
T2 - Materials Research Bulletin
AU - Chen, Chi-Long
AU - Jin, Jingpeng
AU - CHEN, SHENGTAO
AU - Wang, Tingxia
AU - Xiao, Jiangrong
AU - Peng, Tianyou
PY - 2021
DA - 2021/05/01 00:00:00
PB - Elsevier
SP - 111177
VL - 137
SN - 0025-5408
ER -
BibTex
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BibTex Copy
@article{2021_Chen,
author = {Chi-Long Chen and Jingpeng Jin and SHENGTAO CHEN and Tingxia Wang and Jiangrong Xiao and Tianyou Peng},
title = {In-situ growth of ultrafine ZnO on g-C3N4 layer for highly active and selective CO2 photoreduction to CH4 under visible light},
journal = {Materials Research Bulletin},
year = {2021},
volume = {137},
publisher = {Elsevier},
month = {may},
url = {https://doi.org/10.1016/j.materresbull.2020.111177},
pages = {111177},
doi = {10.1016/j.materresbull.2020.111177}
}
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