Organic Photovoltaic Catalyst with σ-π Anchor for High-Performance Solar Hydrogen Evolution.
Angew Chem Int Ed Engl
; 62(12): e202217989, 2023 Mar 13.
Article
em En
| MEDLINE
| ID: mdl-36700554
ABSTRACT
Efficient in situ deposition of metallic cocatalyst, like zero-valent platinum (Pt), on organic photovoltaic catalysts (OPCs) is the prerequisite for their high catalytic activities. Here we develop the OPC (Y6CO), by introducing carbonyl in the core, which is available to σ-π coordinate with transition metals, due to the high-energy empty π* orbital of carbonyl. Y6CO exhibits a stronger capability to anchor Pt species and reduce them to metallic state, resulting in more Pt0 deposition, relative to the control OPC without the central σ-π anchor. Single-component and heterojunction nanoparticles (NPs) employing Y6CO show enhanced average hydrogen evolution rates of 230.98 and 323.22â
mmol h-1 g[OPC] -1 , respectively, under AM 1.5G, 100â
mW cm-2 for 10â
h, and heterojunction NPs yield the external quantum efficiencies of ca. 10 % in 500-800â
nm. This work demonstrates that σ-π anchoring is one efficient strategy for integrating metallic cocatalyst and OPC for high-performance photocatalysis.
Texto completo:
1
Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article