Magnetic Titanium Dioxide Nanocomposites for Surface‐Enhanced Resonance Raman Spectroscopic Determination and Degradation of Toxic Anilines and Phenols |
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| Authors: | Dr Xiao Xia Han Dr Lei Chen Dr Uwe Kuhlmann Claudia Schulz Prof Inez M Weidinger Prof Peter Hildebrandt |
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| Institution: | 1. Institut für Chemie, Technische Universit?t Berlin, Sekr. PC14, Strasse des 17. Juni 135, 10623 Berlin (Germany);2. State Key Laboratory of Supramolecular Structure and Materials, Jilin University, 2699 Qianjin Street, Changchun 130012 (P.R. China) |
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| Abstract: | Mesoporous M‐TiO2 NCs, functionalized by PATP, can capture toxic anilines and phenols by azo coupling. Loading these nanodevices with Ag NPs offers the possibility for a sensitive quantitative determination of target compounds by SERRS spectroscopy, which allows multiplex detection because of the specific vibrational fingerprints. Sensitivity and selectivity can be further enhanced by concentrating the hybrid particles by an external magnet and compound‐specific binding (anilines versus phenols). The bound toxic compounds can be degraded by TiO2‐assisted photocatalysis after removal of the loaded hybrid particles from the sample solution with an external magnet. The degradation process can be enhanced in the presence of plasmonic Ag nanostructures. |
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| Keywords: | aniline magnetic TiO2 phenol photocatalysis SERRS |
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