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Multifunctional mesoporous material for detection, adsorption and removal of Hg2+ in aqueous solution
Wang, Chan1; Tao, Shengyang1; Wei, Wei2; Meng, Changgong1; Liu, Fengyu1; Han, Mei1; Tao, SY
2010
Source PublicationJOURNAL OF MATERIALS CHEMISTRY
ISSN0959-9428
Volume20Issue:22Pages:4635-4641
AbstractA novel, "all-in-one'', multifunctional microsphere with a fluorescent mesoporous silica shell (Rhodamine B coordinate receptor inside) and a magnetic core (Fe3O4) has been successfully fabricated using a sol-gel method and small molecular (CTAB) surfactants as structure-directing agents. At the same time, they were examined for environmental protection applications to detect, adsorb and remove Hg2+ in aqueous solution. The prepared nanocomposite microspheres were fluorescent, mesoporous, and magnetizable, with a diameter of 300-450 nm, a surface area of 600 m(2) g(-1), a pore size of 2.5 nm, and a saturation magnetization of 27.5 emu g(-1). These multifuctional microspheres showed excellent fluorescence sensitivity and selectivity towards Hg2+ over other metal ions (Na+, Mg2+, Mn2+, Co2+, Ni2+, Zn2+, Cd2+, Ag+, Pb2+ and Cu2+). Upon the addition of Hg2+, an overall emission change of 16-fold was observed, and the detection limit of Hg2+ was as low as 10 ppb. The adsorption process of Hg2+ on the microspheres was well described by the Langmuir equation. The equilibrium can be established within five minutes and the adsorption capacity was 21.05 mg g(-1). The concentration of Hg2+ ions can be reduced to less than 0.05 ppm and the used microspheres can be easily separated from the mixture by adding an external magnetic field. These results suggest that these "all-in-one'' multifunctional nanocomposites are potentially useful materials for simultaneously rapidly detecting and recovering dangerous pollutants in aqueous solution.
KeywordSensitive Fluorescent Chemosensor Metal-ions Magnetic Nanoparticles Selective Detection Silica Microspheres Spheres Water Spirolactam Recognition
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1039/c000315h
Indexed BySCI
Language英语
WOS KeywordSENSITIVE FLUORESCENT CHEMOSENSOR ; METAL-IONS ; MAGNETIC NANOPARTICLES ; SELECTIVE DETECTION ; SILICA ; MICROSPHERES ; SPHERES ; WATER ; SPIROLACTAM ; RECOGNITION
WOS Research AreaChemistry ; Materials Science
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary
WOS IDWOS:000278046000015
Citation statistics
Cited Times:146[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6247
Collection生化工程国家重点实验室
Corresponding AuthorTao, SY
Affiliation1.Dalian Univ Technol, Sch Chem Engn, Dalian, Liaoning, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Wang, Chan,Tao, Shengyang,Wei, Wei,et al. Multifunctional mesoporous material for detection, adsorption and removal of Hg2+ in aqueous solution[J]. JOURNAL OF MATERIALS CHEMISTRY,2010,20(22):4635-4641.
APA Wang, Chan.,Tao, Shengyang.,Wei, Wei.,Meng, Changgong.,Liu, Fengyu.,...&Tao, SY.(2010).Multifunctional mesoporous material for detection, adsorption and removal of Hg2+ in aqueous solution.JOURNAL OF MATERIALS CHEMISTRY,20(22),4635-4641.
MLA Wang, Chan,et al."Multifunctional mesoporous material for detection, adsorption and removal of Hg2+ in aqueous solution".JOURNAL OF MATERIALS CHEMISTRY 20.22(2010):4635-4641.
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