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Un MOF de magnesio estable en agua que conduce los protones a más de 10 (-2) S cm (-1)

Padmini Ramaswamy¹, Norman E Wong¹, Benjamin S Gelfand¹

¹Department Of Chemistry, University of Calgary, Calgary, Alberta T2N 1N4, Canada.

Journal of the American Chemical Society

|June 9, 2015

Resumen

Desarrollamos una nueva estructura de carboxifosfonato de magnesio (PCMOF10) que exhibe una alta conductividad de protones y estabilidad en el agua. Este material hace avanzar los marcos metálico-orgánicos para su uso potencial en aplicaciones de conducción de protones.

Área de la Ciencia:

Ciencia de los materiales Ciencia de los materiales.
Química Inorgánica La Química Inorgánica es la química inorgánica.
La electroquímica es electroquímica.

Sus antecedentes:

Se exploran las estructuras metal-orgánicas (MOF) para la conducción de protones.
Mejorar la conductividad y la estabilidad hidrolítica en los MOF sigue siendo un desafío.

Objetivo del estudio:

Desarrollar un nuevo MOF con conductividad de protones mejorada y estabilidad del agua.
Investigar las características estructurales que permiten una transferencia eficiente de protones.

Principales métodos:

Síntesis de un marco de carboxifosfonato de magnesio en capas (PCMOF10).
Medición de la conductividad de los protones en condiciones variables de humedad y temperatura.
Evaluación de la estabilidad hidrolítica.

Principales resultados:

PCMOF10 logró una alta conductividad de protones de 3,55 × 10{-2) S·cm{-1) a 70 °C y un 95% de RH.
El marco demostró una excelente estabilidad del agua debido a fuertes enlaces Mg-fosfonato.
El enlazador H6L facilitó una eficiente vía de transferencia de protones a través de las interacciones con el agua de celosía.

Conclusiones:

PCMOF10 representa un avance significativo en las MOFs conductoras de protones.
La estructura robusta del material y la ruta eficiente de los protones ofrecen potencial para dispositivos electroquímicos.
Este trabajo proporciona una nueva estrategia para el diseño de MOF estables y conductores.

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