Highly Stable Hydrophobic SiNCO Nanoparticle-Modified Silicon Nitride Membrane for Zero-Discharge Water Desalination
Highly Stable Hydrophobic SiNCO Nanoparticle-Modified Silicon Nitride Membrane for Zero-Discharge Water Desalination
复制标题
用于零排放海水淡化的高稳定疏水性SiNCO纳米颗粒改性氮化硅膜
DOI：
10.1002/aic.15500
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发表时间：
2017
期刊：
影响因子：
3.7
通讯作者：
Agathopoulos Simeon
中科院分区：
文献类型：
--
作者：
Wang Jun-Wei;Li Lin;Gu Jian-Qiang;Yang Ming-Ye;Xu Xin;Chen Chu-Sheng;Wang Huan-Ting;Agathopoulos Simeon
膜蒸馏水淡化可以获得比反渗透高得多的水回收率，但缺乏稳定的疏水性膜限制了其商业应用。本文介绍了用泡状纳米SiCO颗粒修饰多孔Si3N4基片制备新型疏水薄膜。由于-Si-CH3端基的存在和较高的表面粗糙度，膜的水接触角为142°。膜暴露在沸水、pH为2-12的水溶液和苯中后，接触角几乎保持不变。该膜在高浓度氯化钠溶液和模拟海水中表现出良好的海水淡化性能。该膜具有很高的稳定性，有望开发一种零排放的海水淡化工艺，同时生产生活用淡水和工业用盐水。《美国化学工程师学会学报》，63：1272-1277,2017
Membrane distillation water desalination can attain a significantly higher water recovery than reverse osmosis, while the lack of stable hydrophobic membranes limits its commercial applications. This article presents the preparation of a new hydrophobic membrane by modifying a porous Si3N4substrate with vesicular SiNCO nano‐particles. The membrane had a water contact angle of 142°, due to the presence of –Si–CH3terminal groups and the high surface roughness. The contact angle remained nearly the same after exposures of the membrane to boiling water, aqueous solutions with pH ranging from 2 to 12, and benzene. The membrane exhibited satisfactory water desalination performance on highly concentrated NaCl solutions and simulated seawater. With the highly stable membrane, it is promising to develop a zero‐discharge water desalination process for simultaneous production of fresh water for daily uses and brine for industrial uses. © 2016 American Institute of Chemical EngineersAIChE J, 63: 1272–1277, 2017