Hydrogen-Mediated Photoelectrocatalysis with Nickel-Modified Poly(Heptazine Imides)-Reference-Cited by-同舟云学术

Hydrogen-Mediated Photoelectrocatalysis with Nickel-Modified Poly(Heptazine Imides)

Published:2023-11-11 Issue:1 Volume:15 Page:42-51
ISSN:1868-2529
Container-title:Electrocatalysis
language:en
Short-container-title:Electrocatalysis

Author:

Blaskievicz Sirlon F.,Teixeira Ivo F.,Mascaro Lucia H.,Carta Mariolino,McKeown Neil B.,Zhao Yuanzhu,Marken Frank

Abstract

AbstractPolymeric carbon nitrides (C3N4) are photochemically active organic semiconductors that can be produced in a wide range of structural types. Here, a poly-(heptazine imide) containing nickel single atoms (Ni-PHI) is employed for photochemical hydrogen production and is compared to the non-nickel-doped semiconductor. Film deposits are formed on a platinum disk electrode (to detect hydrogen) and a coating of the molecularly rigid polymer of intrinsic microporosity PIM-1 is applied to (i) mechanically stabilize the photo-catalyst film without impeding photocatalysis and (ii) assist in the interfacial hydrogen capture/oxygen suppression process. In the presence of hole quenchers such as methanol or ethanol, anodic photocurrents linked to hydrogen production/oxidation are observed. A comparison with an experiment on glassy carbon confirms the formation of interfacial hydrogen as a mediator. The effects of hole quencher concentration are evaluated. The system Pt/Ni-PHI/PIM-1 is employed in a single-compartment photo-fuel cell. Graphical Abstract

Funder

CAPES-PRINT

FAPESP

China Scholarship Council

Publisher

Springer Science and Business Media LLC

Subject

Electrochemistry

Link

https://link.springer.com/content/pdf/10.1007/s12678-023-00852-9.pdf

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