A novel dichromate-sensitive fluorescent nano-chemosensor using new functionalized SBA-15 |
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| Authors: | Morteza Hosseini Vinod Kumar Gupta Mohammad Reza Ganjali Zahra Rafiei-Sarmazdeh Farnoush Faridbod Hassan Goldooz Ali Reza Badiei Parviz Norouzi |
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| Institution: | 1. Department of Life Science Engineering, Faculty of New Sciences & Technologies, University of Tehran, Tehran, Iran;2. Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee (UK) 247 667, India;3. Chemistry Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia;4. Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran;5. Department of Chemistry, Tarbiat Modares University, Tehran, Iran;6. School of Chemistry, University College of Science, University of Tehran, Tehran, Iran |
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| Abstract: | A novel fluorescence nano-chemosensor for Cr2O72− anion has been developed by assembly of fluorescent aluminum complex of 8-hydroxyquinoline (AlQx) within the channels of modified SBA-15. SBA-SPS-AlQx shows a fluorescence emission at 486 nm. The observed remarkable fluorescence of SBA-SPS-AlQx quenches in presence of Cr2O72− anion. The results showed that this fluorescent nano-material can be a useful chemo-sensor for determination of dichromate anions in aqueous solutions. The linear detecting range of fluorescent nano-chemosensor for Cr2O72− anion was 0.16–2.9 μmol L−1. The lowest limit of detection (LDL) was also found to be 0.2 ng mL−1 in aqueous solutions. SBA-SPS-AlQx showed selectively and sensitively fluorescent quenching response toward Cr2O72− ion in comparison with I3−, NO3−, CN−, CO32−, Br−, Cl−, F−, H2PO4− and SO42− ions, which was because of the higher stability of its inorganic complex with dichromate ion. |
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| Keywords: | Dichromate Nano-chemosensor Fluorescence SBA-15 |
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