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Tsinghua SIGS desarrolló membranas de nitruro de boro funcionalizadas para producir agua limpia
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Tsinghua Shenzhen International Graduate School

Apr 14, 2022, 04:34 ET

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- Tsinghua SIGS desarrolló membranas de nitruro de boro funcionalizadas de permeabilidad ultra alta para la catálisis heterogénea nanoconfinada para producir agua limpia

SHENZHEN, China, 14 de abril de 2022 /PRNewswire/ -- El equipo del Prof. Zhenghua Zhang del Instituto de Medio Ambiente y Ecología, Tsinghua Shenzhen International Graduate School (SIGS), ha desarrollado una plataforma compacta combinando un proceso de separación por membrana y un proceso de oxidación avanzado en un solo paso para la catálisis heterogénea nanoconfinada de contaminantes orgánicos persistentes para producir agua limpia. La estrategia de funcionalización in situ presentada por su equipo es conveniente y permite la nucleación de nanocatalizadores dentro de los nanocanales de transporte de agua de la membrana de nitruro de boro, abriendo una vía prometedora para la construcción de membranas catalíticas. El artículo de investigación del profesor Zhang, "Membrana de nitruro de boro funcionalizada de permeabilidad ultra alta para la catálisis heterogénea nanoconfinada", se ha publicado en Chem Catalysis el 3 de febrero de 2022 (https://doi.org/10.1016/j.checat.2022.01.003).

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A conceptual illustration of 2D Co-BNNS membrane-confined nanofluidic platform for heterogenous catalysis of organic pollutants and DFT-based theoretical analysis.
A conceptual illustration of 2D Co-BNNS membrane-confined nanofluidic platform for heterogenous catalysis of organic pollutants and DFT-based theoretical analysis.
The Institute of Environment and Ecology
The Institute of Environment and Ecology

La contaminación del agua está causada principalmente por actividades antropogénicas y puede perturbar el buen funcionamiento de las actividades económicas y la salud humana. En este contexto, la detección de contaminantes orgánicos persistentes, como productos farmacéuticos y plaguicidas, en las masas de agua dulce es alarmante debido a sus efectos nocivos bien documentados en la salud humana (por ejemplo, malformaciones genéticas) tras una exposición prolongada. Debido a estas graves consecuencias, el agua limpia (ODS6) y la buena salud (ODS3) están incluidos en los objetivos de desarrollo sostenible de la ONU. En este caso, el equipo del profesor Zhang introdujo un concepto sencillo de funcionalización de la membrana de nanoplanchas de nitruro de boro (BNNS), que implica la nucleación de nanocatalizadores de cobalto dentro de la red de nanocanales de transporte de agua de la membrana. Las especies reactivas cristalinas confinadas en la membrana con múltiples sitios activos expuestos activan espontáneamente el peroximonosulfato, produciendo ROS para la destrucción ultrarrápida (~80 ms) de contaminantes orgánicos a un caudal rápido de 548 L m-2 h-1. La membrana de Co-BNNS mostró una buena estabilidad y superó a los sistemas de catálisis confinados en membranas desarrollados anteriormente (con una permeabilidad hasta 26 veces mayor). La membrana de Co-BNNS permitió la destrucción ultrarrápida de varios contaminantes orgánicos, ofreciendo una alternativa atractiva para aplicaciones de catálisis basadas en membranas.

Más información:

El Instituto de Medio Ambiente y Ecología (iEE) es una parte vital de la disciplina de ciencias medioambientales de Tsinghua. Orientado a las necesidades básicas del desarrollo de alta calidad y basado en la vanguardia de las disciplinas internacionales, el Instituto se compromete a estudiar la teoría de la protección ecológica y medioambiental, investigar tecnologías clave, cultivar personal de alto nivel con competencia global y proporcionar apoyo de talento científico y tecnológico para la civilización ecológica y la construcción de comunidades con un futuro compartido para la humanidad. El iEE ofrece 5 programas de Máster y 2 programas de doctorado a estudiantes internacionales.

Abierta la admisión de 2022.

https://www.sigs.tsinghua.edu.cn/en/2021/1014/c1402a30068/page.htm

Contacto:
Instituto de Medio Ambiente y Ecología
86-755-26418632
[email protected]

Foto - https://mma.prnewswire.com/media/1796145/A_conceptual_illustration_2D_Co_BNNS_membrane_confined_nanofluidic_platform_heterogenous_catalysis.jpg
Foto - https://mma.prnewswire.com/media/1796146/The_Institute_Environment_Ecology.jpg

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