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含有氧化石墨烯的高性能聚胺膜用于反透淡化

M A Abu-Saied^1,2, Mohamed Abdel Rafea³, Eman A El Desouky^2,4

¹Polymeric Materials Research Department, Advanced Technology and New Materials Research Institute, City of Scientific Research and Technological Applications (SRTA-CITY), New Borg El-Arab, Alexandria 21934, Egypt.

|June 23, 2025

概括

一种新的聚胺/石墨烯氧化物膜为反透提供了卓越的性能. 与传统的聚胺膜相比,这种混合材料显示了增强的热稳定性,机械强度和显著改善的水透性和盐排斥性.

科学领域:

材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.
环境科学环境科学

背景情况:

反透 (RO) 膜对于水的淡化和净化至关重要.
传统的聚胺 (PI) 膜面临着水透性和盐排斥权衡的挑战.
通过混合材料增强膜特性是一个活跃的研究领域.

研究的目的:

开发和研究用于反透应用的新型混合聚胺/石墨烯氧化物 (PI/G) 膜.
为了评估石墨烯氧化物结合对膜特性和性能的影响.
解决现有RO膜中的透性-选择性权衡问题.

主要方法:

混合PI/G膜使用混合工艺合成.
膜特性包括FT-IR,SEM,TGA,机械测试和水接触角度测量.
通过测量压力下的盐排斥和水透性来评估RO性能.

主要成果:

与纯PI膜相比,混合PI/G膜具有显著增强的热稳定性 (高达800°C) 和机械强度 (52.11 MPa).
加入氧化石墨烯降低了水接触角度,表明水友性得到改善.
PI/G500膜实现了90%的盐排斥率和23.17L/m2h的水透率在10bar,超过纯PI膜的性能.

结论:

将石墨烯氧化物纳入聚胺基质有效提高RO膜性能.
混合膜提供了更好的热和机械稳定性,以及优越的水透性和盐排斥.
这些PI/G膜为克服传统RO膜的权衡局限性提供了一个有希望的解决方案.

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