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Membranas de bombas de iones heterogéneas bioinspiradas: Propiedades de bombeo selectivo unidireccional y
Zhen Zhang1,2, Pei Li3, Xiang-Yu Kong4
1Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China.
Journal of the American Chemical Society
|December 21, 2017
Resumen
Los investigadores desarrollaron una bomba de iones artificial inteligente con flujo selectivo y unidireccional y puertas controlables. Esta membrana bioinspirada avanza en dispositivos nanofluídicos para aplicaciones de energía, tratamiento de agua y biosensores.
Área de la Ciencia:
- Ciencias de los materiales
- Nanotecnología
- Ingeniería biomimética
Sus antecedentes:
- Las bombas de iones artificiales son cruciales para la conversión de energía, la biosensorización y la desalinización, imitando las bombas biológicas.
- Las bombas bioinspiradas actuales carecen de selectividad, direccionalidad y puertas controlables, lo que limita su funcionalidad.
- El transporte de iones "inteligentes" requiere una alta selectividad, direccionalidad y puertas controlables.
Objetivo del estudio:
- Desarrollar una membrana de bomba de iones heterogénea bioinspirada con mayor selectividad y direccionalidad.
- Para lograr funciones controlables de bloqueo de iones en un sistema de bomba de iones artificial.
- Crear una plataforma para dispositivos nanofluídicos avanzados inspirados en sistemas biológicos.
Principales métodos:
- Fabricación de una membrana de bomba de iones heterogénea bioinspirada.
- Utilizando el recubrimiento sacrificial de membrana de copolimero de bloque y las técnicas de injerto de plasma.
- Introducción de la distribución asimétrica de grupos iónicos para controlar el transporte de iones.
Principales resultados:
- La membrana desarrollada exhibe un bombeo selectivo de iones unidireccional.
- El sistema muestra propiedades controlables de bloqueo de iones.
- La distribución asimétrica de grupos iónicos se identifica como el factor clave para los nuevos comportamientos de transporte.
Conclusiones:
- La bomba de iones heterogéneos proporciona una plataforma para simular procesos inteligentes de transporte de iones.
- Esta tecnología promueve la aplicación de dispositivos nanofluídicos artificiales en la conversión de energía, el tratamiento del agua y el biosensing.
- El estudio representa un paso importante hacia sistemas avanzados de transporte de iones biomiméticos.
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