摘要
综述了微反应位(MRLs)的构建对聚合物膜性能的影响.由于现有的无机功能材料存在表面羟基数有限,路易斯酸位少等缺点,而非化学计量无机功能材料表面存在着大量的羟基和丰富的路易斯酸位,具有优越的亲水性,将其填充到聚合物膜中使膜的综合性能得到显著提高.然而通过掺杂这些材料制备的杂化膜,仅仅依赖着流体和膜表面间的物理作用来提高膜的性能,并没有通过化学反应去除膜表面的污染物.针对废水中的污染物,制备了一系列新型的功能材料,能够在聚合物膜的表面和孔道内部形成MRLs,并有效地分解有机污染物、微生物和无机污染物,显著提高了膜的耐污染性能、亲水性能和抗压实性能.
The formation of micro reaction locations（MRLs）and its effect on the properties of polymer membranes were studied.Though the performance of polymer membranes can be enhanced by adding functional inorganic materials,further enhancement is limited because there are few Lewis acid sites and hydroxide radicals on the surface of these inorganic functional materials.In pursuit of better performance,nonstoichiometric inorganic functional materials with various point defects and numerous exposed hydroxide radicals were used as filler to improve the hydrophilicity and antifouling properties of the membranes.However,the above methods just doped inorganic functional materials into polymer membranes by physical interaction on the interface between aqueous solution and the membrane,without any chemical interaction.In order to further enhance anti-fouling property and hydrophilicity of membranes,the membranes should be modified by doping novel small size functional materials,which can form MRLs inside channels and on the surface of the membrane to effectively degrade organic,inorganic pollutants and microbes.
作者
张裕卿
雍明
孙帅
ZHANG Yuqing;YONG Ming;SUN Shuai(School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,Chin)
出处
《膜科学与技术》
CAS
CSCD
北大核心
2018年第3期134-143,共10页
Membrane Science and Technology
基金
国家自然科学基金(21676180)
天津市科技支撑重点项目(15ZCZDSF00160)
天津市科技兴海计划(KJXH2014-05)
关键词
无机功能材料
非化学计量材料
固体超强酸
微反应位
inorganic functional material
non stoichiometric material
solid super acid
micro reaction locations
