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Platinum Nanoparticle Inclusion into a Carbonized Polymer of Intrinsic Microporosity: Electrochemical Characteristics of a Catalyst for Electroless Hydrogen Peroxide Production
Nanomaterials, Volume: 8, Issue: 7, Start page: 542
Swansea University Author:
Mariolino Carta
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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...
Published in: | Nanomaterials |
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ISSN: | 2079-4991 |
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2018
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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 |
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56aebf2bba457f395149bbecbfa6d3eb |
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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 |
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Nanomaterials |
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Swansea University |
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2079-4991 |
doi_str_mv |
10.3390/nano8070542 |
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Faculty of Science and Engineering |
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School of Engineering and Applied Sciences - Chemistry{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemistry |
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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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1763752586203103232 |
score |
11.021648 |