Fabrication of graphene nanoplatelets/MgAl-layered double hydroxide nanocomposites as efficient support for gold nanoparticles and their catalytic performance in 4-nitrophenol reduction

Banou, Meriem; Niu, Yubiao; Ammari, Fatima; Dunlop, Tom; Palmer, Edward; Tizaoui, Chedly

doi:10.1016/j.psep.2023.04.051

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Fabrication of graphene nanoplatelets/MgAl-layered double hydroxide nanocomposites as efficient support for gold nanoparticles and their catalytic performance in 4-nitrophenol reduction

Meriem Banou, Yubiao Niu, Fatima Ammari, Tom Dunlop

, Edward Palmer, Chedly Tizaoui

Process Safety and Environmental Protection, Volume: 174

Swansea University Authors: Tom Dunlop , Edward Palmer, Chedly Tizaoui

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DOI (Published version): 10.1016/j.psep.2023.04.051

Abstract

The catalytic reduction of 4-nitrophenol is of considerable importance to a multitude of applications and industries. The present work introduces a new catalyst (AuNP/GNP/MgAl-LDH) containing gold nanoparticles (AuNP) supported on graphene nanoplatelets (GNP) intercalated in Mg Al layered double hyd...

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Published in:	Process Safety and Environmental Protection
ISSN:	0957-5820
Published:	Elsevier BV 2023
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URI:	https://cronfa.swan.ac.uk/Record/cronfa63347
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spelling	v2 63347 2023-05-04 Fabrication of graphene nanoplatelets/MgAl-layered double hydroxide nanocomposites as efficient support for gold nanoparticles and their catalytic performance in 4-nitrophenol reduction 809395460ab1e6b53a906b136d919c41 0000-0002-5851-8713 Tom Dunlop Tom Dunlop true false 08cdd17a3d9994d116305d7f0fada749 Edward Palmer Edward Palmer true false 4b34a0286d3c0b0b081518fa6987031d 0000-0003-2159-7881 Chedly Tizaoui Chedly Tizaoui true false 2023-05-04 MTLS The catalytic reduction of 4-nitrophenol is of considerable importance to a multitude of applications and industries. The present work introduces a new catalyst (AuNP/GNP/MgAl-LDH) containing gold nanoparticles (AuNP) supported on graphene nanoplatelets (GNP) intercalated in Mg Al layered double hydroxides (MgAl-LDH) for the reduction of 4-nitrophenol to 4-aminophenol using NaBH4 as a reducing agent. The catalyst was characterized by FTIR, XRD, STEM, TEM, and BET specific surface area. The XRD analysis showed the presence of crystalline phases of gold on the supports, while TEM demonstrated that MgAl-LDH provided uniform binding sites for AuNPs and prevented agglomeration. Similar reaction rate constant was determined for the disappearance of 4-nitrophenol and for the appearance of 4-aminophenol. The reaction rate constant was the highest for AuNP/GNP/MgAl-LDH, followed by AuNP/MgAl-LDH and AuNP/GNP. AuNP/GNP/MgAl-LDH was found stable after five repeated cycles. Journal Article Process Safety and Environmental Protection 174 Elsevier BV 0957-5820 hydrotalcite, gold nanoparticles, graphene, nitrophenol, reduction 3 5 2023 2023-05-03 10.1016/j.psep.2023.04.051 http://dx.doi.org/10.1016/j.psep.2023.04.051 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University SU Library paid the OA fee (TA Institutional Deal) Meriem Banou acknowledges the financial support from the Ministry of Higher Education of Algeria under the National Exceptional Program Grant (PNE). The authors acknowledge access to the Swansea University Advanced Imaging of Materials (AIM) Facility for catalyst characterisation. AIM is funded in part by the EPSRC (EP/M028267/1), the European Regional Development Fund through the Welsh Government (80708) and the Welsh Government's Ser Cymru program. 2023-06-09T14:17:17.5109173 2023-05-04T13:54:36.6869699 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Meriem Banou 1 Yubiao Niu 2 Fatima Ammari 3 Tom Dunlop 0000-0002-5851-8713 4 Edward Palmer 5 Chedly Tizaoui 0000-0003-2159-7881 6 63347__27395__706ddb84c8eb4dacb7b2628cb4a4e3dd.pdf 63347.pdf 2023-05-10T10:30:03.5595441 Output 4631935 application/pdf Version of Record true 2023 The Author(s). Published by Elsevier Ltd on behalf of Institution of Chemical Engineers. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). true eng http://creativecommons.org/licenses/by/4.0/
title	Fabrication of graphene nanoplatelets/MgAl-layered double hydroxide nanocomposites as efficient support for gold nanoparticles and their catalytic performance in 4-nitrophenol reduction
spellingShingle	Fabrication of graphene nanoplatelets/MgAl-layered double hydroxide nanocomposites as efficient support for gold nanoparticles and their catalytic performance in 4-nitrophenol reduction Tom Dunlop Edward Palmer Chedly Tizaoui
title_short	Fabrication of graphene nanoplatelets/MgAl-layered double hydroxide nanocomposites as efficient support for gold nanoparticles and their catalytic performance in 4-nitrophenol reduction
title_full	Fabrication of graphene nanoplatelets/MgAl-layered double hydroxide nanocomposites as efficient support for gold nanoparticles and their catalytic performance in 4-nitrophenol reduction
title_fullStr	Fabrication of graphene nanoplatelets/MgAl-layered double hydroxide nanocomposites as efficient support for gold nanoparticles and their catalytic performance in 4-nitrophenol reduction
title_full_unstemmed	Fabrication of graphene nanoplatelets/MgAl-layered double hydroxide nanocomposites as efficient support for gold nanoparticles and their catalytic performance in 4-nitrophenol reduction
title_sort	Fabrication of graphene nanoplatelets/MgAl-layered double hydroxide nanocomposites as efficient support for gold nanoparticles and their catalytic performance in 4-nitrophenol reduction
author_id_str_mv	809395460ab1e6b53a906b136d919c41 08cdd17a3d9994d116305d7f0fada749 4b34a0286d3c0b0b081518fa6987031d
author_id_fullname_str_mv	809395460ab1e6b53a906b136d919c41_*_Tom Dunlop 08cdd17a3d9994d116305d7f0fada749__Edward Palmer 4b34a0286d3c0b0b081518fa6987031d_**_Chedly Tizaoui
author	Tom Dunlop Edward Palmer Chedly Tizaoui
author2	Meriem Banou Yubiao Niu Fatima Ammari Tom Dunlop Edward Palmer Chedly Tizaoui
format	Journal article
container_title	Process Safety and Environmental Protection
container_volume	174
publishDate	2023
institution	Swansea University
issn	0957-5820
doi_str_mv	10.1016/j.psep.2023.04.051
publisher	Elsevier BV
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department_str	School of Engineering and Applied Sciences - Chemical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemical Engineering
url	http://dx.doi.org/10.1016/j.psep.2023.04.051
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description	The catalytic reduction of 4-nitrophenol is of considerable importance to a multitude of applications and industries. The present work introduces a new catalyst (AuNP/GNP/MgAl-LDH) containing gold nanoparticles (AuNP) supported on graphene nanoplatelets (GNP) intercalated in Mg Al layered double hydroxides (MgAl-LDH) for the reduction of 4-nitrophenol to 4-aminophenol using NaBH4 as a reducing agent. The catalyst was characterized by FTIR, XRD, STEM, TEM, and BET specific surface area. The XRD analysis showed the presence of crystalline phases of gold on the supports, while TEM demonstrated that MgAl-LDH provided uniform binding sites for AuNPs and prevented agglomeration. Similar reaction rate constant was determined for the disappearance of 4-nitrophenol and for the appearance of 4-aminophenol. The reaction rate constant was the highest for AuNP/GNP/MgAl-LDH, followed by AuNP/MgAl-LDH and AuNP/GNP. AuNP/GNP/MgAl-LDH was found stable after five repeated cycles.
published_date	2023-05-03T14:17:15Z
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Fabrication of graphene nanoplatelets/MgAl-layered double hydroxide nanocomposites as efficient support for gold nanoparticles and their catalytic performance in 4-nitrophenol reduction

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