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Platinum Nanoparticle Inclusion into a Carbonized Polymer of Intrinsic Microporosity: Electrochemical Characteristics of a Catalyst for Electroless Hydrogen Peroxide Production

Robert Adamik, Naiara Hernández-Ibáñez, Jesus Iniesta, Jennifer Edwards, Alexander Howe, Robert Armstrong, Stuart Taylor, Alberto Roldan, Yuanyang Rong, Richard Malpass-Evans, Mariolino Carta Orcid Logo, Neil McKeown, Daping He, Frank Marken

Nanomaterials, Volume: 8, Issue: 7, Start page: 542

Swansea University Author: Mariolino Carta Orcid Logo

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DOI (Published version): 10.3390/nano8070542

Abstract

The one-step vacuum carbonization synthesis of a platinum nano-catalyst embedded in a microporous heterocarbon (Pt@cPIM) is demonstrated. A nitrogen-rich polymer of an intrinsic microporosity (PIM) precursor is impregnated with PtCl62− to give (after vacuum carbonization at 700 °C) a nitrogen-contai...

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Published in: Nanomaterials
ISSN: 2079-4991
Published: 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa41082
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spelling 2018-08-09T12:22:58.7759566 v2 41082 2018-07-20 Platinum Nanoparticle Inclusion into a Carbonized Polymer of Intrinsic Microporosity: Electrochemical Characteristics of a Catalyst for Electroless Hydrogen Peroxide Production 56aebf2bba457f395149bbecbfa6d3eb 0000-0003-0718-6971 Mariolino Carta Mariolino Carta true false 2018-07-20 CHEM The one-step vacuum carbonization synthesis of a platinum nano-catalyst embedded in a microporous heterocarbon (Pt@cPIM) is demonstrated. A nitrogen-rich polymer of an intrinsic microporosity (PIM) precursor is impregnated with PtCl62− to give (after vacuum carbonization at 700 °C) a nitrogen-containing heterocarbon with embedded Pt nanoparticles of typically 1–4 nm diameter (with some particles up to 20 nm diameter). The Brunauer-Emmett-Teller (BET) surface area of this hybrid material is 518 m2 g−1 (with a cumulative pore volume of 1.1 cm3 g−1) consistent with the surface area of the corresponding platinum-free heterocarbon. In electrochemical experiments, the heterocarbon-embedded nano-platinum is observed as reactive towards hydrogen oxidation, but essentially non-reactive towards bigger molecules during methanol oxidation or during oxygen reduction. Therefore, oxygen reduction under electrochemical conditions is suggested to occur mainly via a 2-electron pathway on the outer carbon shell to give H2O2. Kinetic selectivity is confirmed in exploratory catalysis experiments in the presence of H2 gas (which is oxidized on Pt) and O2 gas (which is reduced on the heterocarbon surface) to result in the direct formation of H2O2. View Full-Text Journal Article Nanomaterials 8 7 542 2079-4991 heterocarbon; microporosity; voltammetry; peroxide; bifunctional catalysis 18 7 2018 2018-07-18 10.3390/nano8070542 http://www.mdpi.com/2079-4991/8/7/542 COLLEGE NANME Chemistry COLLEGE CODE CHEM Swansea University 2018-08-09T12:22:58.7759566 2018-07-20T19:34:51.7423009 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemistry Robert Adamik 1 Naiara Hernández-Ibáñez 2 Jesus Iniesta 3 Jennifer Edwards 4 Alexander Howe 5 Robert Armstrong 6 Stuart Taylor 7 Alberto Roldan 8 Yuanyang Rong 9 Richard Malpass-Evans 10 Mariolino Carta 0000-0003-0718-6971 11 Neil McKeown 12 Daping He 13 Frank Marken 14 0041082-20072018193703.pdf nanomaterials-08-00542.pdf 2018-07-20T19:37:03.7970000 Output 3876518 application/pdf Version of Record true 2018-07-20T00:00:00.0000000 This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license. true eng
title Platinum Nanoparticle Inclusion into a Carbonized Polymer of Intrinsic Microporosity: Electrochemical Characteristics of a Catalyst for Electroless Hydrogen Peroxide Production
spellingShingle Platinum Nanoparticle Inclusion into a Carbonized Polymer of Intrinsic Microporosity: Electrochemical Characteristics of a Catalyst for Electroless Hydrogen Peroxide Production
Mariolino Carta
title_short Platinum Nanoparticle Inclusion into a Carbonized Polymer of Intrinsic Microporosity: Electrochemical Characteristics of a Catalyst for Electroless Hydrogen Peroxide Production
title_full Platinum Nanoparticle Inclusion into a Carbonized Polymer of Intrinsic Microporosity: Electrochemical Characteristics of a Catalyst for Electroless Hydrogen Peroxide Production
title_fullStr Platinum Nanoparticle Inclusion into a Carbonized Polymer of Intrinsic Microporosity: Electrochemical Characteristics of a Catalyst for Electroless Hydrogen Peroxide Production
title_full_unstemmed Platinum Nanoparticle Inclusion into a Carbonized Polymer of Intrinsic Microporosity: Electrochemical Characteristics of a Catalyst for Electroless Hydrogen Peroxide Production
title_sort Platinum Nanoparticle Inclusion into a Carbonized Polymer of Intrinsic Microporosity: Electrochemical Characteristics of a Catalyst for Electroless Hydrogen Peroxide Production
author_id_str_mv 56aebf2bba457f395149bbecbfa6d3eb
author_id_fullname_str_mv 56aebf2bba457f395149bbecbfa6d3eb_***_Mariolino Carta
author Mariolino Carta
author2 Robert Adamik
Naiara Hernández-Ibáñez
Jesus Iniesta
Jennifer Edwards
Alexander Howe
Robert Armstrong
Stuart Taylor
Alberto Roldan
Yuanyang Rong
Richard Malpass-Evans
Mariolino Carta
Neil McKeown
Daping He
Frank Marken
format Journal article
container_title Nanomaterials
container_volume 8
container_issue 7
container_start_page 542
publishDate 2018
institution Swansea University
issn 2079-4991
doi_str_mv 10.3390/nano8070542
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Chemistry{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemistry
url http://www.mdpi.com/2079-4991/8/7/542
document_store_str 1
active_str 0
description The one-step vacuum carbonization synthesis of a platinum nano-catalyst embedded in a microporous heterocarbon (Pt@cPIM) is demonstrated. A nitrogen-rich polymer of an intrinsic microporosity (PIM) precursor is impregnated with PtCl62− to give (after vacuum carbonization at 700 °C) a nitrogen-containing heterocarbon with embedded Pt nanoparticles of typically 1–4 nm diameter (with some particles up to 20 nm diameter). The Brunauer-Emmett-Teller (BET) surface area of this hybrid material is 518 m2 g−1 (with a cumulative pore volume of 1.1 cm3 g−1) consistent with the surface area of the corresponding platinum-free heterocarbon. In electrochemical experiments, the heterocarbon-embedded nano-platinum is observed as reactive towards hydrogen oxidation, but essentially non-reactive towards bigger molecules during methanol oxidation or during oxygen reduction. Therefore, oxygen reduction under electrochemical conditions is suggested to occur mainly via a 2-electron pathway on the outer carbon shell to give H2O2. Kinetic selectivity is confirmed in exploratory catalysis experiments in the presence of H2 gas (which is oxidized on Pt) and O2 gas (which is reduced on the heterocarbon surface) to result in the direct formation of H2O2. View Full-Text
published_date 2018-07-18T03:52:21Z
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score 11.035655

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