Chemical Engineering Journal, volume 438, pages 135652
Hollow spherical biomass derived-carbon dotted with SnS2/g-C3N4 Z-scheme heterojunction for efficient CO2 photoreduction into CO
Publication type: Journal Article
Publication date: 2022-06-01
Journal:
Chemical Engineering Journal
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 15.1
ISSN: 13858947, 03009467
General Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering
Environmental Chemistry
Abstract
Hollow spherical configuration, facilitating internal electric field (IEF), highly-dispersed Z-scheme SnS 2 /g-C 3 N 4 heterostructure, and increased basic sites for CO 2 adsorption, endow the SnS 2 /g-C 3 N 4 /C (SCC) photocatalyst prominent photocatalytic activity of CO 2 -to-CO. • Z-scheme SnS 2 /g-C 3 N 4 /C heterostructure is prepared by morphology-inherited strategy. • It exhibits remarkably enhanced photocatalytic activity for CO 2 photoreduction. • Hollow spherical Z-scheme decreases the energy barriers of formed intermediates. • Z-scheme mechanism is beneficial to the effective separation of charge carriers. The core of realizing the effective CO 2 conversion by solar energy is to develop a stable photocatalyst with high CO 2 adsorption capacity and high charge separation efficiency. In this work, a hollow spherical Z-scheme SnS 2 /g-C 3 N 4 /C (SCC) photocatalyst is successfully constructed by a morphology-inherited strategy. Biomass mabospores are utilized as both the precursor for formation of hollow spherical structure and carbon source, and the g-C 3 N 4 and SnS 2 nanosheets tightly anchor on the surface of mabospores-derived carbon spheres. The Z-scheme SCC heterostructure exhibits 5.5 times activity enhancement on CO 2 photoreduction to CO with a high evolution rate up to 40.86 μmol∙g −1 ∙h −1 . Examined by various photoelectrochemical analysis, the boosted photocatalytic activity originates mainly from the construction of hollow spherical Z-scheme heterojunction, providing the more preferable basic sites for CO 2 adsorption, promoting the separation efficiency of electron-hole pairs, as well as increasing the reductionability of electrons in conduction band of g-C 3 N 4 . The formed internal electric fields between the g-C 3 N 4 and SnS 2 can also further reinforce the spatial separation of photogenerated charge carriers. Theoretical calculations further verify that the SCC Z-scheme heterostructure can effectively decrease the energy barriers of formed intermediates, especially the crucial COOH*, and thus leading to the facile conversion of CO 2 -to-CO. This work induces a new strategy to construct g-C 3 N 4 -based Z-scheme heterojunction assisted by versatile biomasses with optimized structure and enhanced photoelectrochemical merits for efficient CO 2 conversion into chemical fuels.
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5
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35
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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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Li Y. I. et al. Hollow spherical biomass derived-carbon dotted with SnS2/g-C3N4 Z-scheme heterojunction for efficient CO2 photoreduction into CO // Chemical Engineering Journal. 2022. Vol. 438. p. 135652.
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Li Y. I., Yin Q., Zeng Y., Liu Z. Hollow spherical biomass derived-carbon dotted with SnS2/g-C3N4 Z-scheme heterojunction for efficient CO2 photoreduction into CO // Chemical Engineering Journal. 2022. Vol. 438. p. 135652.
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TY - JOUR
DO - 10.1016/j.cej.2022.135652
UR - https://doi.org/10.1016/j.cej.2022.135652
TI - Hollow spherical biomass derived-carbon dotted with SnS2/g-C3N4 Z-scheme heterojunction for efficient CO2 photoreduction into CO
T2 - Chemical Engineering Journal
AU - Li, Yang I
AU - Yin, Qiang
AU - Zeng, Yingshan
AU - Liu, Zhi
PY - 2022
DA - 2022/06/01 00:00:00
PB - Elsevier
SP - 135652
VL - 438
SN - 1385-8947
SN - 0300-9467
ER -
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@article{2022_Li,
author = {Yang I Li and Qiang Yin and Yingshan Zeng and Zhi Liu},
title = {Hollow spherical biomass derived-carbon dotted with SnS2/g-C3N4 Z-scheme heterojunction for efficient CO2 photoreduction into CO},
journal = {Chemical Engineering Journal},
year = {2022},
volume = {438},
publisher = {Elsevier},
month = {jun},
url = {https://doi.org/10.1016/j.cej.2022.135652},
pages = {135652},
doi = {10.1016/j.cej.2022.135652}
}