Chemical-template synthesis of micro/nanoscale magnesium silicate hollow spheres for waste-water treatment.
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.
Wang
Yongqiang
Y
Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, P.R. China.
Wang
Guozhong
G
Wang
Hongqiang
H
Liang
Changhao
C
Cai
Weiping
W
Zhang
Lide
L
D000327:Adsorption; D008274:Magnesium / Q000737:chemistry; D017633:Magnesium Silicates / Q000737:chemistry*; D019216:Metals, Heavy / Q000737:chemistry; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D016062:Porosity; D017640:Silicates / Q000737:chemistry; D013499:Surface Properties; D014865:Waste Disposal, Fluid; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification*
D017633:Magnesium Silicates; D019216:Metals, Heavy; D017640:Silicates; D014874:Water Pollutants, Chemical; D008274:Magnesium