Fluorescence-enhanced optical sensor for detection of Al3+ in water based on functionalised nanoporous silica type SBA-15

被引：0
作者：
Mehdi Karimi
Alireza Badieia
Ghodsi Mohammadi Ziarani
机构：
[1] University of Tehran,School of Chemistry, College of Science
[2] University of Tehran,Nanobiomedicine Center of Excellence, Nanoscience and Nanotechnology Research Center
[3] Alzahra University,Department of Chemistry, Faculty of Science
来源：
Chemical Papers | 2016年 / 70卷
关键词：
fluorescence; nanoporous silica material; SBA-15; optical sensor; Al;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
An organic–inorganic hybrid optical sensor (PQ-SBA-15) was designed and prepared through functionalisation of the SBA-15 surface with 3-piperazinepropyltriethoxysilane followed by covalently attaching 8-hydroxyquinoline. Characterisation techniques, including FT-IR, thermal gravimetric, N2 adsorption-desorption and X-ray powder diffraction analyses, showed that the organic moieties were successfully grafted onto the surface of SBA-15 without the SBA-15 structure collapsing. The evaluation of the sensing ability of PQ-SBA-15 using fluorescence spectroscopy revealed that the PQ-SBA-15 was a selective fluorescence enhancement-based optical sensor for Al3+ in water in the presence of a wide range of metal cations including Na+, Mg2+, K+, Ca2+, Cr3+, Mn2+, Fe3+, Co2+, Ni2+, Cu2+, Zn2+, Cd2+, Hg2+ and Pb2+ with a limit of detection of 8.8 × 10–7 M. In addition, good linearity was observed between the fluorescence intensity and the concentration of Al3+.
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页码：1431 / 1438
页数：7
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