Centre for Mineral Materials, School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Hunan Key Lab of Mineral Materials and Application, Central South University, Changsha 410083, China.
Centre for Mineral Materials, School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California, Davis, CA 95616, United States.
J Hazard Mater. 2018 Feb 15;344:1090-1100. doi: 10.1016/j.jhazmat.2017.11.058. Epub 2017 Dec 1.
Hierarchical porous SiO-AlOOH composite nanosheets (HPSA) with a three-dimensional (3D) structure were prepared from two-dimensional (2D) layered mineral kaolinite (A1SiO(OH)) via a template-free structural reorganization method. The obtained material was subjected to homogeneous and effective amino-functionalization by grafting it with (3-aminopropyl) triethoxysilane. Owing to the enhanced 3D hierarchical meso-macroporous structure containing highly dispersed protonated amino groups (NH), the as-prepared amino-functionalized HPSA (NH-HPSA) showed unique adsorption performance towards the congo red anionic dye. It provides feasibilities to fabricate other functional hierarchical porous materials from clay minerals, which can offer potential applications in adsorption, separation, catalysis and other environmental remediation fields.
采用无模板结构重组法，由二维层状矿物高岭石（A1SiO(OH))制备出具有三维（3D）结构的分级多孔 SiO-AlOOH 复合纳米片（HPSA）。通过接枝（3-氨丙基）三乙氧基硅烷，对得到的材料进行均匀有效的氨基功能化。由于增强的 3D 分级中孔-大孔结构含有高度分散的质子化氨基（NH），所制备的氨基功能化 HPSA（NH-HPSA）对刚果红阴离子染料表现出独特的吸附性能。这为从粘土矿物制备其他功能分级多孔材料提供了可能性，这些材料在吸附、分离、催化和其他环境修复领域具有潜在的应用。
