Oxidation of metallic Cu by supercritical CO₂ and control synthesis of amorphous nano-metal catalysts for CO₂ electroreduction.

ABSTRACT: Amorphous nano-metal catalysts often exhibit appealing catalytic properties, because the intrinsic linear scaling relationship can be broken. However, accurate control synthesis of amorphous nano-metal catalysts with desired size and morphology is a challenge. In this work, we discover that Cu(0) could be oxidized to amorphous Cu_xO species by supercritical CO₂. The formation process of the amorphous Cu_xO is elucidated with the aid of machine learning. Based on this finding, a method to prepare Cu nanoparticles with an amorphous shell is proposed by supercritical CO₂ treatment followed by electroreduction. The unique feature of this method is that the size of the particles with amorphous shell can be easily controlled because their size depends on

SUBMITTER: Chen C 

PROVIDER: S-EPMC9968285 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature