增强聚硫混合矩阵膜与氨基功能化石墨烯氧化物用于空气脱湿和水处理
Omnya Abdalla1,2, Abdul Rehman1, Ahmed Nabeeh1
1Chemical Engineering Program, Texas A&M University at Qatar, Doha 23874, Qatar.
Membranes
|July 28, 2023
概括
胺基功能化石墨烯氧化物 (GO-NH2) 增强了多硫 (PSf) 膜,使其具有卓越的油水分离和湿度控制. 这些混合矩阵膜 (MMM) 显示出更好的透性,防性质和机械强度.
科学领域:
- 材料科学 材料科学 材料科学
- 膜技术 膜技术 膜技术
- 环境工程 环境工程
背景情况:
- 多孔的低压膜对于水处理,海水淡化和气体分离至关重要.
- 聚硫 (PSf) 膜被广泛使用,但可能受到污染和性能的限制.
- 石墨烯氧化物 (GO) 是一个有前途的纳米材料,用于增强膜特性.
研究的目的:
- 制造和表征聚硫混合矩阵膜 (PSf-GO-NH2 MMMs),其中包含氨基功能化石墨烯氧化物 (GO-NH2).
- 研究GO-NH2度对膜形态,水友性,机械性能和分离性能的影响.
- 评估开发的膜的防和去除湿度的能力.
主要方法:
- 使用相反过程制造PSf-GO-NH2MMM.
- 通过X射线光电子光谱 (XPS),扫描电子显微镜 (SEM),原子力显微镜 (AFM),动态机械分析 (DMA),X射线衍射 (XRD) 和接触角度测量进行表征.
- 对油水分离,防 (使用牛血清白蛋白 - BSA) 和去除湿度的性能测试.
主要成果:
- 最佳的GO-NH2度 (0.05-0.2重量%) 显著提高了膜的水友性,多孔性和机械性能.
- 水的透度增加了92%,油的排斥达到95.6%,其中0.2%的GO-NH2重量超过纯PSf膜.
- 防性能有所改善,在BSA过后,流量回收率更高 (88%与控制的69%相比),湿度透率增加.
结论:
- 与纯PSf膜相比,PSf-GO-NH2MMM在油水分离和湿度控制方面表现优越.
- 加入GO-NH2显著提高了膜的水友性,透性和机械强度.
- 增强的防性质使这些膜非常适合苛刻的水处理应用.
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