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Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts
Published on: August 7, 2018
Oxidación de agua impulsada por la energía solar por un catalizador molecular de manganeso bioinspirado
Robin Brimblecombe1, Annette Koo, G Charles Dismukes
1School of Chemistry, Monash University, Wellington Road, Clayton, Victoria 3800, Australia.
Journal of the American Chemical Society
|February 17, 2010
Resumen
Los investigadores desarrollaron una nueva célula fotoelectroquímica utilizando materiales abundantes en la tierra para catalizar la oxidación del agua con luz visible. Este sistema imita la fotosíntesis natural, ofreciendo un enfoque sostenible para la fotosíntesis artificial.
Área de la Ciencia:
- La fotosíntesis artificial es la fotosíntesis artificial.
- La catálisis es la catálisis.
- Ciencia de los materiales ciencia de los materiales.
Sus antecedentes:
- La fotosíntesis natural oxida eficientemente el agua utilizando un racimo basado en manganeso.
- El desarrollo de sistemas artificiales para imitar este proceso es crucial para la energía sostenible.
- Los catalizadores moleculares ofrecen propiedades sintonizables para la oxidación del agua.
Objetivo del estudio:
- Diseñar y construir una célula fotoelectroquímica para la oxidación del agua.
- Para utilizar un catalizador molecular sintetizado a partir de elementos abundantes en la tierra.
- Para crear un análogo funcional del centro de oxidación del agua en la fotosíntesis natural.
Principales métodos:
- Se ensambló una célula fotoelectroquímica con un sistema de separación de cargas fotoquímicas ([Ru ((II) ((bipy)) ((2) ((bipy ((COO)))))) en vidrio FTO recubierto de titanio.
- Un catalizador molecular, [Mn(4) O(4) L(6) ](+) (1(+)), fue sintetizado utilizando ligandos de bis(metoxifenilo) fosfinato abundantes en la tierra.
- El catalizador (1(+)) estaba incrustado dentro de una membrana conductora de protones (Nafion).
Principales resultados:
- La célula fotoelectroquímica diseñada catalizó con éxito la fotooxidación del agua.
- La luz visible se utilizó como la única fuente de energía para el proceso catalítico.
- El sistema demostró una analogía funcional con el centro de oxidación del agua en la fotosíntesis natural.
Conclusiones:
- Se ha desarrollado un nuevo sistema fotoelectroquímico para la oxidación del agua.
- El uso de materiales abundantes en la tierra en el catalizador molecular ofrece una alternativa sostenible.
- Esta investigación avanza en el campo de la fotosíntesis artificial y las soluciones energéticas sostenibles.
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