TY - JOUR
T1 - Photoelectrochemistry of immobilised Pt@g-C
3 N
4 mediated by hydrogen and enhanced by a polymer of intrinsic microporosity PIM-1
AU - Marken, Frank
AU - Zhao, Yuanzhu
AU - Madrid, Elena
AU - Carta, Mariolino
AU - Mckeown, Neil B.
AU - Al Abass , Nawal Abdullah
AU - Malpass-evans, Richard
AU - Fletcher, Philip
PY - 2019/6/30
Y1 - 2019/6/30
N2 - 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.
AB - 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.
KW - Electroanalysis
KW - Glucose
KW - Nanomaterials
KW - Photo-synthesis
KW - Photovoltaics
KW - Photovoltammetry
UR - http://www.scopus.com/inward/record.url?scp=85064556207&partnerID=8YFLogxK
U2 - 10.1016/j.elecom.2019.04.006
DO - 10.1016/j.elecom.2019.04.006
M3 - Article
SN - 1388-2481
VL - 103
SP - 1
EP - 6
JO - Electrochemistry Communications
JF - Electrochemistry Communications
ER -
