Template-induced synthesis of hierarchical SiO2@γ-AlOOH spheres and their application in Cr(VI) removal

被引：44

作者：

Wang, Yongqiang ^{[1
]}

Wang, Guozhong ^{[1
]}

Wang, Hongqiang ^{[1
]}

Cai, Weiping ^{[1
]}

Liang, Changhao ^{[1
]}

Zhang, Lide ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanotechnol, Key Lab Mat Phys, Hefei 230031, Peoples R China

来源：

NANOTECHNOLOGY | 2009年 / 20卷 / 15期

关键词：

BOEHMITE NANOFIBERS; ROOM-TEMPERATURE; WATER-TREATMENT; HOLLOW SPHERES; SILICA SPHERES; ALOOH; NANOSTRUCTURES; NANOTUBES; NANORODS; GROWTH;

D O I：

10.1088/0957-4484/20/15/155604

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Hierarchical structured SiO2@gamma-AlOOH spheres were fabricated in one step by using silica colloidal spheres as a template. Scanning electron microscopy and transmission electron microscopy investigation showed that the shell is composed of large amounts of nanoscale gamma-AlOOH lamellas. The growth mechanism was proposed as silica template-induced heterogeneous deposition of gamma-AlOOH lamellas. The adsorption properties of hierarchical SiO2@gamma-AlOOH spheres annealed at different temperatures were investigated through the removal test of Cr(VI) ions in model wastewater, and the nanostructures annealed at 400 degrees C showed good adsorption capability of Cr(VI) ions.

引用

页数：6

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