Anodic SnO₂ porous nanostructures with rich grain boundaries for efficient CO₂ electroreduction to formate.

ABSTRACT: Formic acid (HCOOH), the acidic form of formate, is an important hydrogen carrier which can be directly used in fuel cells. Development of earth-abundant element-based catalysts to convert carbon dioxide (CO₂) into HCOOH or formate with high selectivity and high efficiency has been a vigorous research activity in recent years but remains an unsolved challenge. In this contribution, using one-step anodization, we prepare nanotubular SnO₂ porous nanostructures with high surface area (90.1 m² g^-1), large porosity (0.74 cm³ g^-1), and rich grain boundaries for electrochemical CO₂ reduction (CO₂RR). They exhibit stable 95% faradaic efficiency (FE) towards CO₂RR and 73% FE for formate at -0.8 V

SUBMITTER: Ma R 

PROVIDER: S-EPMC9054717 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature