期刊
RSC ADVANCES
卷 2, 期 7, 页码 2783-2789出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2ra01106a
关键词
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资金
- National Nature Science Foundation of China [21007016, 20773039, 20977030]
- National Basic Research Program of China (973 Program) [2007CB613301, 2010CB732306]
- Science and Technology Commission of Shanghai Municipality [10520709900, 10JC1403900]
- Fundamental Research Funds for the Central Universities
Core-shell mesoporous silica nanospheres encapsulated with rhodamine 101 into the solid core and 8-aminoquinoline derivatives into the mesoporous shell were used as a ratiometric fluorescent sensor to detect metal ions, which shows a high selectivity and sensitivity to Zn2+. Concentrations as low as 5 x 10(-8) M can be detected and the addition of other metal ions has a negligible influence on the fluorescence emission. Moreover, the dye-doped nanospheres show excellent photostability, no dye leaking and a good adsorption capacity to Zn2+, which make it repeatedly applicable for simultaneous heavy metal ion sensing and removal from polluted water.
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