Revealing the Intrinsic Restructuring of Bi₂O₃ Nanoparticles into Bi Nanosheets during Electrochemical CO₂ Reduction.

ABSTRACT: Bismuth is a catalyst material that selectively produces formate during the electrochemical reduction of CO₂. While different synthesis strategies have been employed to create electrocatalysts with better performance, the restructuring of bismuth precatalysts during the reaction has also been previously reported. The mechanism behind the change has, however, remained unclear. Here, we show that Bi₂O₃ nanoparticles supported on Vulcan carbon intrinsically transform into stellated nanosheet aggregates upon exposure to an electrolyte. Liquid cell transmission electron microscopy observations first revealed the gradual restructuring of the nanoparticles into nanosheets in the presence of 0.1 M KHCO₃ without an applied potential. Our experiments also

SUBMITTER: Avila-Bolivar B 

PROVIDER: S-EPMC10921375 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature