Synthesis of silver nanoparticles decorated on core-shell structured tannic acid-coated iron oxide nanospheres for excellent electrochemical detection and efficient catalytic reduction of hazardous 4-nitrophenol
In this research, synthesis of silver nanoparticles (Ag NPs) decorated on tannic acid (TA) covered magnetite (Fe3O4) (TA@Fe3O4-Ag NPs) nanohybrid is reported. TA (carbon-shell) on Fe3O4 nanospheres (core) acted as a green reducing and stabilizing agent for the reduction of Ag ions into Ag NPs. The a...
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Published in | Composites. Part B, Engineering Vol. 162; pp. 33 - 42 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier Ltd
01.04.2019
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Subjects | |
Online Access | Get full text |
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Summary: | In this research, synthesis of silver nanoparticles (Ag NPs) decorated on tannic acid (TA) covered magnetite (Fe3O4) (TA@Fe3O4-Ag NPs) nanohybrid is reported. TA (carbon-shell) on Fe3O4 nanospheres (core) acted as a green reducing and stabilizing agent for the reduction of Ag ions into Ag NPs. The as-synthesized TA@Fe3O4-AgNPs core-shell nanohybrid was employed as an efficient nanomaterial for the electrochemical detection and catalytic reduction of ecotoxic 4-nitrophenol (4-NP). TA@Fe3O4-AgNPs nanohybrid modified glassy carbon electrode (GCE) displayed a higher cathodic current response at a very lower over potential of −0.39 V toward 4-NP detection. Under optimized condition, TA@Fe3O4-AgNPs nanohybrid based sensor showed a broad working range from 0.1 to 680.1 μM, with a lower limit of detection of 33 nM for the detection of 4-NP. In addition, TA@Fe3O4-AgNPs nanohybrid exhibited a tremendous catalytic reduction activity for 4-NP, when compared to TA@Fe3O4 and Fe3O4. The results demonstrated that the TA@Fe3O4-AgNPs nanohybrid could be a promising nanocatalyst for the electrochemical detection and catalytic reduction of 4-NP.
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•Synthesis of silver nanoparticles decorated on tannic acid coated magnetite nanohybrid is reported.•As-synthesized TA@Fe3O4-AgNPs nanohybrid was employed for the electrochemical detection and catalytic reduction of 4-NP.•TA@Fe3O4-AgNPs/GCE can detect the 4-NP at low potential (Epc = −0.39 V) with linear range (0.1–680.1 μM), and LOD (33 nM).•TA@Fe3O4-AgNPs nanohybrid exhibited a tremendous catalytic reduction activity for 4-NP, than the TA@Fe3O4 and Fe3O4. |
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ISSN: | 1359-8368 1879-1069 |
DOI: | 10.1016/j.compositesb.2018.10.084 |