工程科学学报.第43卷.第6期：732-744.2021年6月 Chinese Journal of Engineering,Vol.43,No.6:732-744,June 2021 https://doi.org/10.13374/j.issn2095-9389.2021.01.24.001;http://cje.ustb.edu.cn 埃洛石纳米管的疏水改性及其复合材料的研究进展 曾 丽)，韵勤柏，鲁启鹏)，曹文斌) 1)北京科技大学材料科学与工程学院.北京1000832)香港城市大学化学系，香港999077 ☒通信作者，E-mail:qipeng@usth.edu.cn 摘要埃洛石是一种卷曲的层状硅铝酸盐黏土，其储量丰富、价格低廉.埃洛石的内外表面分别由A一OH八面体和 $一O四面体组成，它们在水中以相反的方式电离，导致埃洛石管腔内带正电荷，外表面带负电荷，因此可分别利用内外表面 成分与电荷性质的不同对其进行疏水改性，用于药物的装载和缓释.同时，埃洛石具有纳米管状结构，可用来构造微-纳米分 级结构，协同低表面能物质的修饰，增强界面疏水性能，用于高效自清洁和油水分离。本文在介绍埃洛石的疏水结构设计理 论的基础上，综述了埃洛石纳米管(HNTs)的表面进行疏水改性所得到的复合材料在油水分离、疏水自清洁涂料以及药物的 装载和释放方面的应用. 关键词埃洛石：疏水；涂料：油水分离：纳米载体 分类号TG174.1 Research progress of hydrophobically modified Halloysite nanotube-based composite materials ZENG Li,YUN Qin-bai,LU Qi-peng,CAO Wen-bin) 1)School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China 2)Department of Chemistry,City University of Hong Kong,Hong Kong 999077,China Corresponding author,E-mail:qipeng @ustb.edu.cn ABSTRACT With the development of material design theories and synthesis technologies,clay-based composite materials have been controllably prepared and successfully applied in many fields,such as biomedicine,the automotive industry,petrochemical engineering, and wastewater treatment.To date,for the preparation of clay-based composite materials,the physical and chemical properties of clay must be fully considered,including the chemical composition,crystal structure,particle size,morphology,and surface charge. Halloysite,which has a tubular crystal structure,is a curly layered aluminosilicate clay with abundant reserves and a low price for constructing composite materials.The inner and outer surfaces of halloysite nanotubes are composed of Al-OH octahedrons and Si-O tetrahedrons,respectively,which ionize in opposite ways in water,resulting in opposite charges on the inner and outer surfaces. Therefore,the selective modification of halloysite can be achieved by chemical or electrostatic adsorption of the required chemical reagent.Additionally,the modified halloysite nanotubes can be used in catalysis and the loading and release of drug molecules. Moreover,because of its nanotube structure,the halloysite can be used to construct rough structures in micro-or nano-scale.By incorporation with low-surface-energy materials,the hydrophobic halloysite-based composite materials can be prepared for self-cleaning and oil-water separation.In this review,we introduced the rational design and preparation strategies of the hydrophobic halloysite-based composite materials.Then,we summarized the applications of these prepared composite materials in oil-water separation,hydrophobic 收稿日期：2021-01-24 基金项目：国家自然科学基金资助项目(52041201)：北京市科技新星资助项目(Z201100006820066):中央高校基本科研业务费专项资金资 助项目(FRF-DF-20-03)埃洛石纳米管的疏水改性及其复合材料的研究进展 曾    丽1)，韵勤柏2)，鲁启鹏1) 苣，曹文斌1) 1) 北京科技大学材料科学与工程学院，北京 100083    2) 香港城市大学化学系，香港 999077 苣通信作者，E-mail: qipeng@ustb.edu.cn 摘    要    埃洛石是一种卷曲的层状硅铝酸盐黏土，其储量丰富、价格低廉. 埃洛石的内外表面分别由 Al−OH 八面体和 Si−O 四面体组成，它们在水中以相反的方式电离，导致埃洛石管腔内带正电荷，外表面带负电荷，因此可分别利用内外表面 成分与电荷性质的不同对其进行疏水改性，用于药物的装载和缓释. 同时，埃洛石具有纳米管状结构，可用来构造微−纳米分 级结构，协同低表面能物质的修饰，增强界面疏水性能，用于高效自清洁和油水分离. 本文在介绍埃洛石的疏水结构设计理 论的基础上，综述了埃洛石纳米管（HNTs）的表面进行疏水改性所得到的复合材料在油水分离、疏水自清洁涂料以及药物的 装载和释放方面的应用. 关键词    埃洛石；疏水；涂料；油水分离；纳米载体 分类号    TG174.1 Research  progress  of  hydrophobically  modified  Halloysite  nanotube-based  composite materials ZENG Li1) ，YUN Qin-bai2) ，LU Qi-peng1) 苣 ，CAO Wen-bin1) 1) School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China 2) Department of Chemistry, City University of Hong Kong, Hong Kong 999077, China 苣 Corresponding author, E-mail: qipeng@ustb.edu.cn ABSTRACT    With the development of material design theories and synthesis technologies, clay-based composite materials have been controllably prepared and successfully applied in many fields, such as biomedicine, the automotive industry, petrochemical engineering, and wastewater treatment. To date, for the preparation of clay-based composite materials, the physical and chemical properties of clay must  be  fully  considered,  including  the  chemical  composition,  crystal  structure,  particle  size,  morphology,  and  surface  charge. Halloysite,  which  has  a  tubular  crystal  structure,  is  a  curly  layered  aluminosilicate  clay  with  abundant  reserves  and  a  low  price  for constructing composite materials. The inner and outer surfaces of halloysite nanotubes are composed of Al−OH octahedrons and Si−O tetrahedrons,  respectively,  which  ionize  in  opposite  ways  in  water,  resulting  in  opposite  charges  on  the  inner  and  outer  surfaces. Therefore,  the  selective  modification  of  halloysite  can  be  achieved  by  chemical  or  electrostatic  adsorption  of  the  required  chemical reagent.  Additionally,  the  modified  halloysite  nanotubes  can  be  used  in  catalysis  and  the  loading  and  release  of  drug  molecules. Moreover,  because  of  its  nanotube  structure,  the  halloysite  can  be  used  to  construct  rough  structures  in  micro-  or  nano-scale.  By incorporation with low-surface-energy materials, the hydrophobic halloysite-based composite materials can be prepared for self-cleaning and oil-water separation. In this review, we introduced the rational design and preparation strategies of the hydrophobic halloysite-based composite materials. Then, we summarized the applications of these prepared composite materials in oil-water separation, hydrophobic 收稿日期: 2021−01−24 基金项目: 国家自然科学基金资助项目（52041201）；北京市科技新星资助项目（Z201100006820066）；中央高校基本科研业务费专项资金资 助项目（FRF-DF-20-03） 工程科学学报，第 43 卷，第 6 期：732−744，2021 年 6 月 Chinese Journal of Engineering, Vol. 43, No. 6: 732−744, June 2021 https://doi.org/10.13374/j.issn2095-9389.2021.01.24.001; http://cje.ustb.edu.cn