Highly selective fluorescent chemosensor for detecting Hg(II) in water based on pyrene functionalized core-shell structured mesoporous silica

	Highly selective fluorescent chemosensor for detecting Hg(II) in water based on pyrene functionalized core-shell structured mesoporous silica
其他题名	论文其他题名
	Guo X. R.; Li B.; Zhang L. M.; Wang Y. H.
	2012
发表期刊	Journal of Luminescence
ISSN	0022-2313
卷号	132 期号:7 页码:1729-1734
摘要	Novel pyrene functionalized mesoporous core-shell structured silica (denoted as SiO2@mSiO(2)/Py-Si) was designed and synthesized as a highly selective fluorescent chemosensor for detecting Hg2+ in water. The core-shell structured silica was prepared by a simple sol-gel process through coating SiO2 nanospheres with a layer of ordered mesoporous silica. The surface of outer mesoporous silica shell was then further functionalized by the fluorescent chromophore alkoxysilane modified pyrene (Py-Si). XRD data confirmed that the hexagonal ordered mesoporous structure was preserved after functionalization. The chemosensing material successfully exhibited a remarkable "turn on" response toward Hg2+ over miscellaneous metal ions. A good linear response towards Hg2+ in the concentration range of 10(-8)-10(-4) M was constructed with R-2=0.9913. Most importantly, a satisfactory detection limit of 3.4 x 10(-9) g mL(-1) (down to ppb level) was obtained, which is 100 times lower than our previous report of covalently grafted Py-OH to the bulk mesoporous silica SBA-15. These results indicated that SiO2@mSiO(2)/Py-Si can be used as a highly selective and sensitive fluorescence sensor for Hg2+. (C) 2012 Elsevier B.V. All rights reserved.
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/24641
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Guo X. R.,Li B.,Zhang L. M.,et al. Highly selective fluorescent chemosensor for detecting Hg(II) in water based on pyrene functionalized core-shell structured mesoporous silica[J]. Journal of Luminescence,2012,132(7):1729-1734.
APA	Guo X. R.,Li B.,Zhang L. M.,&Wang Y. H..(2012).Highly selective fluorescent chemosensor for detecting Hg(II) in water based on pyrene functionalized core-shell structured mesoporous silica.Journal of Luminescence,132(7),1729-1734.
MLA	Guo X. R.,et al."Highly selective fluorescent chemosensor for detecting Hg(II) in water based on pyrene functionalized core-shell structured mesoporous silica".Journal of Luminescence 132.7(2012):1729-1734.

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