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Superación de la inestabilidad del cobre mediante aleación de níquel para la hidrogenación eficiente de CO2 por

Yaqin Wang¹, Feng Xue¹, Wanqing Zhang¹

¹State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.

Angewandte Chemie (International ed. in English)

|January 10, 2026

Resumen

Un novedoso catalizador de cobre-níquel convierte eficientemente el dióxido de carbono (CO2) en monóxido de carbono (CO) utilizando luz. Este catalizador plasmónico ofrece una mayor estabilidad y actividad para la hidrogenación de CO2, superando a los catalizadores tradicionales.

Área de la Ciencia:

Ciencia de Materiales
Catálisis
Nanotecnología

Sus antecedentes:

Los catalizadores plasmónicos para la hidrogenación de CO2 enfrentan desafíos de estabilidad y costo.
Los catalizadores convencionales a base de cobre se degradan debido a fluctuaciones de valencia, sinterización y envenenamiento por CO.

Objetivo del estudio:

Desarrollar un catalizador plasmónico eficiente, estable y de bajo costo para la hidrogenación de CO2.
Investigar el papel de la incorporación de Ni en catalizadores a base de Cu para mejorar el rendimiento.

Principales métodos:

Síntesis de catalizador plasmónico bimétalico CuNi (CuNi/Al2O3).
Evaluación de la actividad catalítica para la hidrogenación de CO2 bajo irradiación de luz.
Estudios experimentales y teóricos (incluida caracterización in situ) para comprender los mecanismos de reacción.

Principales resultados:

Se logró una alta tasa de producción de CO (4813 µmol/g/h) a 300 °C.
El catalizador CuNi demostró una estabilidad y actividad superiores en comparación con catalizadores a base de Cu y metales nobles.
La incorporación de Ni redujo la energía de activación, mejoró la estabilidad de la valencia y suprimió la sinterización.

Conclusiones:

CuNi/Al2O3 es un catalizador plasmónico prometedor de bajo costo y estable para la valorización de CO2.
Los efectos plasmónicos mediados por aleaciones mejoran la hidrogenación de CO2 y la longevidad del catalizador.
Proporciona una estrategia de diseño para tecnologías avanzadas de conversión de CO2 impulsadas por energía solar.

Palabras clave:

efecto de aleación nanostructures bimétalicas hidrogenación de CO2 fotocatálisis mejorada por plásmones fluctuación del estado de valencia

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