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Photoelectrochemistry of immobilised Pt@g-C3N4 mediated by hydrogen and enhanced by a polymer of intrinsic microporosity PIM-1.
- Source :
-
Electrochemistry Communications . Jun2019, Vol. 103, p1-6. 6p. - Publication Year :
- 2019
-
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. Unlabelled Image • Triphasic photo-electrode enhanced with polymer of intrinsic microporosity • Hydrogen-mediated photo-anode avoiding charge carrier transport • Room temperature processing to give photo-anode • Glucose-concentration-dependent photo-responses [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13882481
- Volume :
- 103
- Database :
- Academic Search Index
- Journal :
- Electrochemistry Communications
- Publication Type :
- Academic Journal
- Accession number :
- 136935133
- Full Text :
- https://doi.org/10.1016/j.elecom.2019.04.006