Scholarlink

In recent years, one of the most promising alternatives for CO2 conversion into value-added chemicals such as carboxylic acids, carbonyl compounds, alcohols, etc. is the electrochemical CO2 reduction (eCO2R). Nonetheless, high electrochemical overpotentials, poor selectivity and a low reaction rate, which are characteristic of CO2 conversion, alongside the wide use of noble metals as electrocatalysts seem to be the biggest drawbacks. Therefore, the challenge is to develop electrocatalysts that can be easily coupled to the working electrode, solving the intrinsic problems of the eCO2R, while utilising high-abundance and low-cost elements as precursors and simple and reproducible synthetic methods. Furthermore, identifying the active sites that each electrocatalyst has could pose an important aid in the study the reaction mechanism(s) which could be proposed to explain the selectivity of the products. In this work, we describe the synthesis of hydrotalcite-like nanostructured materials composed of Zn, Al, Cd ions, with or without some sulphur content, and the study of their electrocatalytic properties. The in-situ characterisation of the CO2 reduction reaction (CO2RR) products was performed by a spectroelectrochemical analysis, based on the coupling of the chronoamperometric tests to ATR-FTIR spectroscopy. The results, while being qualitative, show that, depending on the sulphur content of the sample, carboxylic acids or alcohols can be obtained as products.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Heterogeneous Electrochemical CO2 Conversion: An Approach Using Nanostructured Hydrotalcite Catalysts

  • 章节

  • 发表日期：

    2026年

查看全文
  • Adrián Farid Bustos-Jiménez,
  • María Elena Manríquez-Ramírez,
  • Martin Daniel Trejo-Valdez,
  • Rodrigo Andrés Espinosa-Flores,
  • Francisco Javier Tzompantzi-Morales

摘要

In recent years, one of the most promising alternatives for CO2 conversion into value-added chemicals such as carboxylic acids, carbonyl compounds, alcohols, etc. is the electrochemical CO2 reduction (eCO2R). Nonetheless, high electrochemical overpotentials, poor selectivity and a low reaction rate, which are characteristic of CO2 conversion, alongside the wide use of noble metals as electrocatalysts seem to be the biggest drawbacks. Therefore, the challenge is to develop electrocatalysts that can be easily coupled to the working electrode, solving the intrinsic problems of the eCO2R, while utilising high-abundance and low-cost elements as precursors and simple and reproducible synthetic methods. Furthermore, identifying the active sites that each electrocatalyst has could pose an important aid in the study the reaction mechanism(s) which could be proposed to explain the selectivity of the products. In this work, we describe the synthesis of hydrotalcite-like nanostructured materials composed of Zn, Al, Cd ions, with or without some sulphur content, and the study of their electrocatalytic properties. The in-situ characterisation of the CO2 reduction reaction (CO2RR) products was performed by a spectroelectrochemical analysis, based on the coupling of the chronoamperometric tests to ATR-FTIR spectroscopy. The results, while being qualitative, show that, depending on the sulphur content of the sample, carboxylic acids or alcohols can be obtained as products.