Photoelectrochemistry of immobilised Pt@g-C 3 N 4 mediated by hydrogen and enhanced by a polymer of intrinsic microporosity PIM-1

Frank Marken, Yuanzhu Zhao, Elena Madrid, Mariolino Carta, Neil B. Mckeown, Nawal Abdullah Al Abass , Richard Malpass-evans, Philip J. Fletcher

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Graphitic carbon nitride with photo-attached platinum nanoparticles of typically 2.5 nm diameter, Pt@g-C 3 N 4 , 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-C 3 N 4 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.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalElectrochemistry Communications
Volume103
Early online date12 Apr 2019
DOIs
Publication statusPublished - 30 Jun 2019

Keywords

  • Electroanalysis
  • Glucose
  • Nanomaterials
  • Photo-synthesis
  • Photovoltaics
  • Photovoltammetry

ASJC Scopus subject areas

  • Electrochemistry

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