Nanoscale Copper-Tin Dioxide Interfaces for Efficient CO₂ Electroreduction to Formic Acid and Formate at High Rates.

ABSTRACT: This study reports highly selective and stable electrocatalysts consisting of Cu and Sn for efficient reduction of CO₂ to formate (HCOO^-) and formic acid (HCOOH). The copper-tin dioxide catalyst (CuSn) is prepared through a one-pot microwave-assisted solvothermal method. Different samples are obtained by varying Cu-to-Sn atomic ratios from 4 to 1. When Sn content is low, the CuSn sample shows a main crystalline phase of cuprous oxide (Cu₂O), with low amounts of surface CuO and SnO₂ species. An increase in Sn percentage leads to the appearance of the crystalline phase of metallic Cu and SnO₂, which becomes dominant for the sample with the highest Sn content. During CO₂ electrolysis, the optimal CuSn material shows a faradaic

SUBMITTER: Huang L 

PROVIDER: S-EPMC12703421 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature