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Fabricating structured 2D Ti3AlC2 MAX dispersed TiO2 heterostructure with Ni2P as a cocatalyst for efficient photocatalytic H2 production

A novel 2D MAX structure of Ti3AlC2 multilayers dispersed with TiO2/Ni2P heterojunction was designed and fabricated through modified sol-gel method for enhanced photocatalytic hydrogen production. Ni2P cocatalyst coupled 2D Ti3AlC2/TiO2 composite showed enhanced visible light absorption with promote...

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Main Authors: Tasleem, Sehar, Muhammad Tahir, Muhammad Tahir, Zakaria, Zaki Yamani
Format: Article
Published: Elsevier Ltd 2020
Subjects:
TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/87138/
http://dx.doi.org/10.1016/j.jallcom.2020.155752
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spelling my.utm.871382020-10-31T12:23:46Z http://eprints.utm.my/id/eprint/87138/ Fabricating structured 2D Ti3AlC2 MAX dispersed TiO2 heterostructure with Ni2P as a cocatalyst for efficient photocatalytic H2 production Tasleem, Sehar Muhammad Tahir, Muhammad Tahir Zakaria, Zaki Yamani TP Chemical technology A novel 2D MAX structure of Ti3AlC2 multilayers dispersed with TiO2/Ni2P heterojunction was designed and fabricated through modified sol-gel method for enhanced photocatalytic hydrogen production. Ni2P cocatalyst coupled 2D Ti3AlC2/TiO2 composite showed enhanced visible light absorption with promoted charge carrier separation. The activity of pristine Ti3AlC2 was obviously increased with the growth of TiO2 NPs and by exfoliating 2D MAX structure into multilayers. 2D Ti3AlC2/TiO2/Ni2P composite exhibited highest H2 production of 13000 μmol g−1 which was 1.29, 3.63 and 3.80 times more than the amount generated by TiO2/Ti3AlC2, TiO2/Ni2P and pristine TiO2, respectively. This enhanced activity was obviously due to good dispersion of TiO2/Ni2P over the Ti3AlC2 multilayers with boosted photoinduced charge carrier separation. Among the sacrificial reagents, glycerol-water mixture gave maximum H2 production due to the presence of more α-hydrogen atoms. More importantly, highest CO2 was evolved using a glycerol-water mixture compared to methanol, confirming both photocatalytic water splitting and photoreforming reactions occur simultaneously. The reaction mechanism to understand the role of each component in the composite catalyst is further discussed. The findings of this work would be helpful in commercial applications of Ti3AlC2 MAX based structured catalysts for H2 production and other sustainable energy systems. Elsevier Ltd 2020-11 Article PeerReviewed Tasleem, Sehar and Muhammad Tahir, Muhammad Tahir and Zakaria, Zaki Yamani (2020) Fabricating structured 2D Ti3AlC2 MAX dispersed TiO2 heterostructure with Ni2P as a cocatalyst for efficient photocatalytic H2 production. Journal of Alloys and Compounds, 842 . p. 155752. ISSN 0925-8388 http://dx.doi.org/10.1016/j.jallcom.2020.155752
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
Tasleem, Sehar
Muhammad Tahir, Muhammad Tahir
Zakaria, Zaki Yamani
Fabricating structured 2D Ti3AlC2 MAX dispersed TiO2 heterostructure with Ni2P as a cocatalyst for efficient photocatalytic H2 production
description A novel 2D MAX structure of Ti3AlC2 multilayers dispersed with TiO2/Ni2P heterojunction was designed and fabricated through modified sol-gel method for enhanced photocatalytic hydrogen production. Ni2P cocatalyst coupled 2D Ti3AlC2/TiO2 composite showed enhanced visible light absorption with promoted charge carrier separation. The activity of pristine Ti3AlC2 was obviously increased with the growth of TiO2 NPs and by exfoliating 2D MAX structure into multilayers. 2D Ti3AlC2/TiO2/Ni2P composite exhibited highest H2 production of 13000 μmol g−1 which was 1.29, 3.63 and 3.80 times more than the amount generated by TiO2/Ti3AlC2, TiO2/Ni2P and pristine TiO2, respectively. This enhanced activity was obviously due to good dispersion of TiO2/Ni2P over the Ti3AlC2 multilayers with boosted photoinduced charge carrier separation. Among the sacrificial reagents, glycerol-water mixture gave maximum H2 production due to the presence of more α-hydrogen atoms. More importantly, highest CO2 was evolved using a glycerol-water mixture compared to methanol, confirming both photocatalytic water splitting and photoreforming reactions occur simultaneously. The reaction mechanism to understand the role of each component in the composite catalyst is further discussed. The findings of this work would be helpful in commercial applications of Ti3AlC2 MAX based structured catalysts for H2 production and other sustainable energy systems.
format Article
author Tasleem, Sehar
Muhammad Tahir, Muhammad Tahir
Zakaria, Zaki Yamani
author_facet Tasleem, Sehar
Muhammad Tahir, Muhammad Tahir
Zakaria, Zaki Yamani
author_sort Tasleem, Sehar
title Fabricating structured 2D Ti3AlC2 MAX dispersed TiO2 heterostructure with Ni2P as a cocatalyst for efficient photocatalytic H2 production
title_short Fabricating structured 2D Ti3AlC2 MAX dispersed TiO2 heterostructure with Ni2P as a cocatalyst for efficient photocatalytic H2 production
title_full Fabricating structured 2D Ti3AlC2 MAX dispersed TiO2 heterostructure with Ni2P as a cocatalyst for efficient photocatalytic H2 production
title_fullStr Fabricating structured 2D Ti3AlC2 MAX dispersed TiO2 heterostructure with Ni2P as a cocatalyst for efficient photocatalytic H2 production
title_full_unstemmed Fabricating structured 2D Ti3AlC2 MAX dispersed TiO2 heterostructure with Ni2P as a cocatalyst for efficient photocatalytic H2 production
title_sort fabricating structured 2d ti3alc2 max dispersed tio2 heterostructure with ni2p as a cocatalyst for efficient photocatalytic h2 production
publisher Elsevier Ltd
publishDate 2020
url http://eprints.utm.my/id/eprint/87138/
http://dx.doi.org/10.1016/j.jallcom.2020.155752
_version_ 1683230705569497088
score 13.211869

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