Nanostructure Engineering of Sn-Based Catalysts for Efficient Electrochemical CO₂ Reduction

Area of Science:

• Materials Science
• Electrochemistry
• Environmental Science

Background:

• Anthropogenic CO2 emissions pose significant environmental threats.
• Artificial photosynthesis offers a sustainable route for CO2 utilization.
• Tin-based catalysts are promising for electrochemical CO2 reduction (ECO2R) due to their favorable properties.

Purpose of the Study:

• To systematically review nanostructure engineering strategies for Sn-based catalysts in ECO2R.
• To highlight the impact of nanostructure modifications on catalyst performance.
• To discuss challenges and future opportunities for Sn-based ECO2R catalysts.

Main Methods:

• Review of nanostructure engineering techniques including size, composition, morphology, and defect control.
• Analysis of electronic structure and intermediate adsorption properties.
• Investigation of chemical state changes and surface hydroxide roles during ECO2R.

Main Results:

• Nanostructure engineering significantly influences the electronic structure and adsorption of intermediates on Sn-based catalysts.
• Specific nanostructure designs can enhance catalytic activity and selectivity for ECO2R.
• Understanding surface chemistry, including hydroxides, is crucial for optimizing catalyst performance.

Conclusions:

• Nanostructure engineering is a key paradigm for developing efficient Sn-based ECO2R catalysts.
• Further research into catalyst/substrate interfaces and single-atom structures holds promise.
• This review provides a framework for advancing Sn-based catalysts for sustainable CO2 conversion.