Photoelectrochemistry of immobilised Pt@g-C3N4 mediated by hydrogen and enhanced by a polymer of intrinsic microporosity PIM-1

Graphitic carbon nitride with photo-attached platinum nanoparticles of typically 2.5 nm diameter, Pt@g-C3N4, is known for photo-generation of hydrogen in aqueous environments and in the presence of hole quenchers. Here, the generation of photocurrents from photo‑hydrogen production is observed at a...

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Main Authors:	Yuanzhu Zhao, Nawal Abdullah Al Abass, Richard Malpass-Evans, Mariolino Carta, Neil B. McKeown, Elena Madrid, Philip J. Fletcher, Frank Marken
Format:	Article
Language:	English
Published:	Elsevier 2019-06-01
Series:	Electrochemistry Communications
Online Access:	http://www.sciencedirect.com/science/article/pii/S1388248119300955

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spelling	doaj-2b4c511df1ae4cdf8a7233a249fc32f92020-11-24T21:21:29ZengElsevierElectrochemistry Communications1388-24812019-06-0110316Photoelectrochemistry of immobilised Pt@g-C3N4 mediated by hydrogen and enhanced by a polymer of intrinsic microporosity PIM-1Yuanzhu Zhao0Nawal Abdullah Al Abass1Richard Malpass-Evans2Mariolino Carta3Neil B. McKeown4Elena Madrid5Philip J. Fletcher6Frank Marken7Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UKKACST, PO Box 6086, Riyadh 11442, Saudi ArabiaSchool of Chemistry, University of Edinburgh, Joseph Black Building, West Mains Road, Edinburgh, Scotland EH9 3JJ, UKDepartment of Chemistry, Swansea University, College of Science, Grove Building, Singleton Park, Swansea SA2 8PP, UKSchool of Chemistry, University of Edinburgh, Joseph Black Building, West Mains Road, Edinburgh, Scotland EH9 3JJ, UKDepartment of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UKMaterials and Chemical Characterisation Facility (MC2), University of Bath, Claverton Down, BA2 7AY, UKDepartment of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK; Corresponding author.Graphitic carbon nitride with photo-attached platinum nanoparticles of typically 2.5 nm diameter, Pt@g-C3N4, is known for photo-generation of hydrogen in aqueous environments and in the presence of hole quenchers. Here, the generation of photocurrents from photo‑hydrogen production is observed at a platinum electrode, driven by oxalate or glucose hole quenchers, and enhanced with a polymer of intrinsic microporosity PIM-1 coated over the Pt@g-C3N4 deposit. The ability of PIM-1 to create triphasic conditions and to capture hydrogen leads to enhanced photocurrent responses, even in the presence of ambient oxygen. Effects are discussed in terms of triphasic solid\|liquid\|hydrogen gas-based electrode processes. A glucose-concentration-dependent (super-Langmuirian) photo-response is observed. Possible applications are proposed in glucose sensing and in hydrogen-mediated photovoltaics. Keywords: Nanomaterials, Photovoltammetry, Electroanalysis, Photovoltaics, Photo-synthesis, Glucosehttp://www.sciencedirect.com/science/article/pii/S1388248119300955
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Yuanzhu Zhao Nawal Abdullah Al Abass Richard Malpass-Evans Mariolino Carta Neil B. McKeown Elena Madrid Philip J. Fletcher Frank Marken
spellingShingle	Yuanzhu Zhao Nawal Abdullah Al Abass Richard Malpass-Evans Mariolino Carta Neil B. McKeown Elena Madrid Philip J. Fletcher Frank Marken Photoelectrochemistry of immobilised Pt@g-C3N4 mediated by hydrogen and enhanced by a polymer of intrinsic microporosity PIM-1 Electrochemistry Communications
author_facet	Yuanzhu Zhao Nawal Abdullah Al Abass Richard Malpass-Evans Mariolino Carta Neil B. McKeown Elena Madrid Philip J. Fletcher Frank Marken
author_sort	Yuanzhu Zhao
title	Photoelectrochemistry of immobilised Pt@g-C3N4 mediated by hydrogen and enhanced by a polymer of intrinsic microporosity PIM-1
title_short	Photoelectrochemistry of immobilised Pt@g-C3N4 mediated by hydrogen and enhanced by a polymer of intrinsic microporosity PIM-1
title_full	Photoelectrochemistry of immobilised Pt@g-C3N4 mediated by hydrogen and enhanced by a polymer of intrinsic microporosity PIM-1
title_fullStr	Photoelectrochemistry of immobilised Pt@g-C3N4 mediated by hydrogen and enhanced by a polymer of intrinsic microporosity PIM-1
title_full_unstemmed	Photoelectrochemistry of immobilised Pt@g-C3N4 mediated by hydrogen and enhanced by a polymer of intrinsic microporosity PIM-1
title_sort	photoelectrochemistry of immobilised pt@g-c3n4 mediated by hydrogen and enhanced by a polymer of intrinsic microporosity pim-1
publisher	Elsevier
series	Electrochemistry Communications
issn	1388-2481
publishDate	2019-06-01
description	Graphitic carbon nitride with photo-attached platinum nanoparticles of typically 2.5 nm diameter, Pt@g-C3N4, is known for photo-generation of hydrogen in aqueous environments and in the presence of hole quenchers. Here, the generation of photocurrents from photo‑hydrogen production is observed at a platinum electrode, driven by oxalate or glucose hole quenchers, and enhanced with a polymer of intrinsic microporosity PIM-1 coated over the Pt@g-C3N4 deposit. The ability of PIM-1 to create triphasic conditions and to capture hydrogen leads to enhanced photocurrent responses, even in the presence of ambient oxygen. Effects are discussed in terms of triphasic solid\|liquid\|hydrogen gas-based electrode processes. A glucose-concentration-dependent (super-Langmuirian) photo-response is observed. Possible applications are proposed in glucose sensing and in hydrogen-mediated photovoltaics. Keywords: Nanomaterials, Photovoltammetry, Electroanalysis, Photovoltaics, Photo-synthesis, Glucose
url	http://www.sciencedirect.com/science/article/pii/S1388248119300955
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Photoelectrochemistry of immobilised Pt@g-C3N4 mediated by hydrogen and enhanced by a polymer of intrinsic microporosity PIM-1

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