Tailoring the Electronic Metal-Support Interactions in Supported Atomically Dispersed Gold Catalysts for Efficient Fenton-like Reaction.
Angew Chem Int Ed Engl
; 60(26): 14370-14375, 2021 Jun 21.
Article
em En
| MEDLINE
| ID: mdl-33843128
ABSTRACT
The atomically dispersed metal is expected as one of the most promising Fenton-like catalysts for the degradation of recalcitrant organic pollutants (ROPs) by the strong "electronic metal-support interactions" (EMSIs). Here, we develop an atomically dispersed metal-atom alloy made by guest Au atoms substitute host V atoms in the two-dimensional VO2 (B) nanobelt support (Au/VO2 ) to activate Fenton-like oxidation for elimination of ROPs. The 2D nanobelt structure enlarges the exposure of atomically Au thus increasing the number of active sites to absorb more S2 O8 2- ions. And the EMSIs regulate the charge density in Au atoms to present positive charge Au+ , lowering the energy barrier of S2 O8 2- decomposition to produce SO4 .- . The Au/VO2 catalyst possesses excellent durable and reliable characteristics and exhibits record-breaking efficiency with TOF as high as 21.42â
min-1 , 16.19â
min-1 , and 80.89â
min-1 for rhodamine, phenol, and bisphenolâ
A degradation, respectively.
Texto completo:
1
Base de dados:
MEDLINE
Idioma:
En
Revista:
Angew Chem Int Ed Engl
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
China