Self-supported Ag(0) nanocatalyst derived from Ag(I)-based coordination polymer

Résumé

Abstract A self-supported microsphere heterogeneous catalyst has been developed from a synthesized Ag(I)-imidazole coordination polymer (compound 1), which was subsequently transformed into an Ag(0)-laden coordination polymer (compound 2) through mild reduction with ascorbic acid. It is proposed that during the reduction process, a measurable fraction of silver ions (Ag(I)) undergo in-situ conversion into silver atoms (Ag(0)), forming uniformly distributed Ag(0) nano-clusters within the structural motif of 2. Additionally, some Ag(0) atoms are suggested to retain the coordination environment of their precursor Ag(I) ions within the framework of 2. The Ag(0)-laden microspheres in catalyst 2 exhibited exceptional zero-energy auto-catalytic decomposition of H2O2 at room temperature under the working conditions. This approach offers a straightforward synthesis route for a self-supported Ag catalyst with significantly enhanced atomic efficiency, catalyst accessibility, and durability, eliminating the need for conventional supports such as silica or alumina.

Citer ce document

Accès au document

Texte intégral en lecture en ligne, réservé aux abonnés SPHAERO et aux membres de l'institution. Se connecter

Auteur(s)

Statistiques

Consultations : 1

Téléchargements : 0