Chemical-Template Synthesis of Micro/Nanoscale Magnesium Silicate Hollow Spheres for Waste-Water Treatment

被引:214
作者
Wang, Yongqiang [1 ]
Wang, Guozhong [1 ]
Wang, Hongqiang [1 ]
Liang, Changhao [1 ]
Cai, Weiping [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
关键词
microporous materials; nanostructures; silicates; water treatment; AQUEOUS-SOLUTIONS; REACTIVE DYE; AZO DYES; ADSORPTION; IONS; COAGULATION; DEGRADATION; WASTEWATERS; FABRICATION; POLLUTANTS;
D O I
10.1002/chem.200902799
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Micro/nanoscale magnesium silicate hollow spheres were synthesized by using silica colloidal spheres as a chemical template in one pot. The hollow spherical structure, consisting of well-separated nanoscale units, was microscale as a whole and could be easily handled in solution. The as-synthesized magnesium silicate hollow spheres with large specific surface area showed availability for the removal of organic and heavy-metal ions efficiently from waste water. Importantly, the micro/nanoscale magnesium silicate hollow spheres that had adsorbed organic pollutants could be regenerated by calcination and used repeatedly in pollutant removal. Magnesium silicate hollow spheres synthesized by a scaled-up chemical template method may have potential applications in removing cationic dyes and heavy-metal ions from waste water.
引用
收藏
页码:3497 / 3503
页数:7
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