Structural Control Enables Catalytic and Electrocatalytic Activity of Porous Tetrametallic Nanorods.

Autor: Zámbó D; HUN-REN Centre for Energy Research, Konkoly-Thege M. út 29-33, Budapest, H-1121, Hungary., Kovács D; HUN-REN Centre for Energy Research, Konkoly-Thege M. út 29-33, Budapest, H-1121, Hungary.; Department of Physical Chemistry and Materials Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3, Budapest, H-1111, Hungary., Radnóczi G; HUN-REN Centre for Energy Research, Konkoly-Thege M. út 29-33, Budapest, H-1121, Hungary., Horváth ZE; HUN-REN Centre for Energy Research, Konkoly-Thege M. út 29-33, Budapest, H-1121, Hungary., Sulyok A; HUN-REN Centre for Energy Research, Konkoly-Thege M. út 29-33, Budapest, H-1121, Hungary., Tolnai I; HUN-REN Centre for Energy Research, Konkoly-Thege M. út 29-33, Budapest, H-1121, Hungary., Deák A; HUN-REN Centre for Energy Research, Konkoly-Thege M. út 29-33, Budapest, H-1121, Hungary.
Jazyk: angličtina
Zdroj: Small (Weinheim an der Bergstrasse, Germany) [Small] 2024 Aug; Vol. 20 (31), pp. e2400421. Date of Electronic Publication: 2024 Mar 03.
DOI: 10.1002/smll.202400421
Abstrakt: Integrating more than one type of metal into a nanoparticle that has a well-defined morphology and composition expands the functionalities of nanocatalysts. For a metal core/porous multimetallic shell nanoparticle, the availability of catalytically active surface sites and molecular mass transport can be enhanced, and the multielemental synergy can facilitate intraparticle charge transport. In this work, a reliable and robust synthesis of such a functional tetrametallic nanoparticle type is presented, where a micro- and mesoporous PdPtIr shell is grown on Au nanorods. The effect of critical synthesis parameters, namely temperature and the addition of HCl are investigated on the hydrodynamic size of the micellar pore template as well as on the stability of the metal chloride complexes and various elemental analysis techniques prove composition of the porous multimetallic shell. Due to the synergistic properties, the tetrametallic nanorods possess extensive negative surface charge making them a promising catalyst in reduction reactions. Dye degradation as well as the conversion of p-nitrophenol to p-aminophenol is catalyzed by the supportless nanorods without light illumination. By depositing the particles onto conductive substrates, the nanostructured electrodes show promising electrocatalytic activity in ethanol oxidation reaction. The nanocatalyst presents excellent morphological stability during all the catalytic test reactions.
(© 2024 The Authors. Small published by Wiley‐VCH GmbH.)
Databáze: MEDLINE
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