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Constructing S-scheme heterojunction of CoAlLa-LDH/g-C3N4 through monolayer Ti3C2-MXene to promote photocatalytic CO2 re-forming of methane to solar fuels

Multi-heterostructure interfaces of CoAlLa-LDH with porous g-C3N4 on monolayer Ti3C2-MXene was designed to get double-S-scheme heterojunction through in situ grown titania nanoparticles using a single-step ultrasonic assisted hydrothermal approach. The Ti3C2 MXene nanotexture embedded TiO2 NPs provi...

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Main Authors: Azmat Ali Khan, Azmat Ali Khan, Muhammad Tahir, Muhammad Tahir
Format: Article
Published: American Chemical Society 2022
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TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/100557/
http://dx.doi.org/10.1021/acsaem.1c03266
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spelling my.utm.1005572023-04-17T06:58:04Z http://eprints.utm.my/id/eprint/100557/ Constructing S-scheme heterojunction of CoAlLa-LDH/g-C3N4 through monolayer Ti3C2-MXene to promote photocatalytic CO2 re-forming of methane to solar fuels Azmat Ali Khan, Azmat Ali Khan Muhammad Tahir, Muhammad Tahir TP Chemical technology Multi-heterostructure interfaces of CoAlLa-LDH with porous g-C3N4 on monolayer Ti3C2-MXene was designed to get double-S-scheme heterojunction through in situ grown titania nanoparticles using a single-step ultrasonic assisted hydrothermal approach. The Ti3C2 MXene nanotexture embedded TiO2 NPs provides 3D nanotexture for promoting the interface interaction of g-C3N4 with CoAlLa-LDH. The g-C3N4/Ti3C2T/CoAlLa-LDH dual-S-scheme assembly possesses merits of conductive and semiconductive components with higher charges separation. The photoactivity test was conducted for CO2 reduction through different re-forming systems such as dry re-forming of methane (DRM) and bi-re-forming of methane (BRM), whereas acidic and basic sites over the composite enabled the attachment of both the CO2 and CH4 molecules for their activation under solar energy. The electron rich composite resulted in CO and H2 production of 55.25 and 54.72 µmol g-1 h-1, respectively under visible light during DRM process. These amounts of CO and H2 were many folds higher than the pristine g-C3N4 and LDH samples. This significant performance was ascribed to the strong interfacial interaction with a dual-step-scheme formation and electron rich linkers of oxygen defective La/Ti sites for superior charge-transfer separation. More importantly, by introducing water to CO2/CH4, a further efficiency was enhanced due to more utilization of holes. The hydrogen rich syngas production through feed ratio and reducing agents with tremendous stability further endorses good sorption characteristics of newly developed nanotextures. This electrostatic attraction approach presented a promising route for the rational design of layered multicomponent heterojunctions with 2D/2D/2D architecture for CO2 reduction to solar fuels. American Chemical Society 2022 Article PeerReviewed Azmat Ali Khan, Azmat Ali Khan and Muhammad Tahir, Muhammad Tahir (2022) Constructing S-scheme heterojunction of CoAlLa-LDH/g-C3N4 through monolayer Ti3C2-MXene to promote photocatalytic CO2 re-forming of methane to solar fuels. ACS Applied Energy Materials, 5 (1). pp. 784-806. ISSN 2574-0962 http://dx.doi.org/10.1021/acsaem.1c03266 DOI : 10.1021/acsaem.1c03266
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TP Chemical technology
spellingShingle TP Chemical technology
Azmat Ali Khan, Azmat Ali Khan
Muhammad Tahir, Muhammad Tahir
Constructing S-scheme heterojunction of CoAlLa-LDH/g-C3N4 through monolayer Ti3C2-MXene to promote photocatalytic CO2 re-forming of methane to solar fuels
description Multi-heterostructure interfaces of CoAlLa-LDH with porous g-C3N4 on monolayer Ti3C2-MXene was designed to get double-S-scheme heterojunction through in situ grown titania nanoparticles using a single-step ultrasonic assisted hydrothermal approach. The Ti3C2 MXene nanotexture embedded TiO2 NPs provides 3D nanotexture for promoting the interface interaction of g-C3N4 with CoAlLa-LDH. The g-C3N4/Ti3C2T/CoAlLa-LDH dual-S-scheme assembly possesses merits of conductive and semiconductive components with higher charges separation. The photoactivity test was conducted for CO2 reduction through different re-forming systems such as dry re-forming of methane (DRM) and bi-re-forming of methane (BRM), whereas acidic and basic sites over the composite enabled the attachment of both the CO2 and CH4 molecules for their activation under solar energy. The electron rich composite resulted in CO and H2 production of 55.25 and 54.72 µmol g-1 h-1, respectively under visible light during DRM process. These amounts of CO and H2 were many folds higher than the pristine g-C3N4 and LDH samples. This significant performance was ascribed to the strong interfacial interaction with a dual-step-scheme formation and electron rich linkers of oxygen defective La/Ti sites for superior charge-transfer separation. More importantly, by introducing water to CO2/CH4, a further efficiency was enhanced due to more utilization of holes. The hydrogen rich syngas production through feed ratio and reducing agents with tremendous stability further endorses good sorption characteristics of newly developed nanotextures. This electrostatic attraction approach presented a promising route for the rational design of layered multicomponent heterojunctions with 2D/2D/2D architecture for CO2 reduction to solar fuels.
format Article
author Azmat Ali Khan, Azmat Ali Khan
Muhammad Tahir, Muhammad Tahir
author_facet Azmat Ali Khan, Azmat Ali Khan
Muhammad Tahir, Muhammad Tahir
author_sort Azmat Ali Khan, Azmat Ali Khan
title Constructing S-scheme heterojunction of CoAlLa-LDH/g-C3N4 through monolayer Ti3C2-MXene to promote photocatalytic CO2 re-forming of methane to solar fuels
title_short Constructing S-scheme heterojunction of CoAlLa-LDH/g-C3N4 through monolayer Ti3C2-MXene to promote photocatalytic CO2 re-forming of methane to solar fuels
title_full Constructing S-scheme heterojunction of CoAlLa-LDH/g-C3N4 through monolayer Ti3C2-MXene to promote photocatalytic CO2 re-forming of methane to solar fuels
title_fullStr Constructing S-scheme heterojunction of CoAlLa-LDH/g-C3N4 through monolayer Ti3C2-MXene to promote photocatalytic CO2 re-forming of methane to solar fuels
title_full_unstemmed Constructing S-scheme heterojunction of CoAlLa-LDH/g-C3N4 through monolayer Ti3C2-MXene to promote photocatalytic CO2 re-forming of methane to solar fuels
title_sort constructing s-scheme heterojunction of coalla-ldh/g-c3n4 through monolayer ti3c2-mxene to promote photocatalytic co2 re-forming of methane to solar fuels
publisher American Chemical Society
publishDate 2022
url http://eprints.utm.my/id/eprint/100557/
http://dx.doi.org/10.1021/acsaem.1c03266
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score 13.211869

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