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<p>Copper and zinc basic carbonates find application in various fields, such as anticorrosive coatings for steels, antimicrobial/antifouling agents, and precursors of mixed ceramic oxides used in catalysis. Among the most common synthetic approaches, there are precipitation methods. Leveraging on this reactivity, the objective of this work was the comparison between a titrimetric method and a co-precipitation method for the synthesis of copper, zinc and mixed Cu-Zn carbonates, with varying Cu/Zn ratios. The effect of the composition and/or morphology of the resulting particles, along with their catalytic properties, was investigated. Fourier-transform infrared spectroscopy (FTIR) in attenuated total reflectance (ATR) mode provided information about their bulk chemical composition showing differences in samples obtained with the two routes. The surface chemical composition of the as-prepared samples was investigated by X-ray photoelectron spectroscopy (XPS). X-ray diffraction (XRD) was used to identify the crystalline phases present. Principal Component Analysis (PCA) was applied to the FTIR data to group the carbonate materials, revealing a good differentiation of the different carbonate compositions along the first principal component. Transmission electron microscopy (TEM) allowed us to assess their morphology. Specific surface area and preliminary catalytic experiments in CO<sub>2</sub> thermal hydrogenation were also performed.</p>

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Synthesis and spectroscopic study of mixed carbonates for the development of CO2 hydrogenation catalysts

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月21日

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  • Margherita Izzi,
  • Mohit Sunil Pathak,
  • Domenico Calia,
  • Maria Francesca Sforza,
  • Nicola Cioffi,
  • Olga Sacco,
  • Vincenzo Vaiano,
  • Barbara Giussani,
  • Antonio Monopoli,
  • Maria Chiara Sportelli,
  • Rosaria Anna Picca

摘要

Copper and zinc basic carbonates find application in various fields, such as anticorrosive coatings for steels, antimicrobial/antifouling agents, and precursors of mixed ceramic oxides used in catalysis. Among the most common synthetic approaches, there are precipitation methods. Leveraging on this reactivity, the objective of this work was the comparison between a titrimetric method and a co-precipitation method for the synthesis of copper, zinc and mixed Cu-Zn carbonates, with varying Cu/Zn ratios. The effect of the composition and/or morphology of the resulting particles, along with their catalytic properties, was investigated. Fourier-transform infrared spectroscopy (FTIR) in attenuated total reflectance (ATR) mode provided information about their bulk chemical composition showing differences in samples obtained with the two routes. The surface chemical composition of the as-prepared samples was investigated by X-ray photoelectron spectroscopy (XPS). X-ray diffraction (XRD) was used to identify the crystalline phases present. Principal Component Analysis (PCA) was applied to the FTIR data to group the carbonate materials, revealing a good differentiation of the different carbonate compositions along the first principal component. Transmission electron microscopy (TEM) allowed us to assess their morphology. Specific surface area and preliminary catalytic experiments in CO2 thermal hydrogenation were also performed.