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Facile biosurfactant assisted biocompatible α-Fe2O3 nanorods and nanospheres synthesis, magneto physicochemical characteristics and their enhanced biomolecules sensing ability
| Content Provider | Semantic Scholar |
|---|---|
| Author | Sundar, Sasikala Mariappan, Ramalakshmi Min, Kim Jung Piraman, Shakkthivel |
| Copyright Year | 2016 |
| Abstract | Recently, non-spherical magnetic iron oxide nanoparticles have attracted much attention, because of their shape-dependant potential applications in biosensors and magnetic storage devices. In this work, a simple, novel, environmentally friendly, energy inexpensive, toxic free synthetic approach was utilized to synthesize α-Fe2O3 nanorods with an aspect ratio of 10 and homogeneously dispersed 30 nm α-Fe2O3 nanospheres (from TEM and FE-SEM images) using non-toxic “Centellasaponin” biosurfactant/capping agent tapping the big polar and non-polar head saponin induced anisotropic growth. The α-Fe2O3 nanorods and nanospheres synthesized by the template-free, low cost, simple, energy intensive route were confirmed by FTIR, XRD and the X-ray photoelectron spectroscopy by the appearance of electron binding energy at 710.74 eV and 724.2 eV corresponding to 2P3/2 and 2P1/2 core levels of α-Fe2O3 nanoparticles. Nano α-Fe2O3 spheres and rods synthesized at different temperatures and various concentrations exhibit superparamagnetic characteristics consisting of a single magnetic domain of nanoparticles with no discernible coercivity and remanance with not ending magnetic saturation hysteresis and will find potential applications in magnetic recording and targeted drug delivery. Nano α-Fe2O3 magnetic particles displayed excellent electrochemical sensing activities towards dopamine and uric acid with 320 mV and 260 mV wider separation on α-Fe2O3 nanorods and α-Fe2O3 nanospheres, respectively at 90–170 mV reduced potential with 100% increased current response. With good selectivity and sensitivity, the α-Fe2O3 nanostructures could be applied in the determination of dopamine in injectable medicine and uric acid in urine samples. |
| Starting Page | 77133 |
| Ending Page | 77142 |
| Page Count | 10 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/C6RA15290B |
| Volume Number | 6 |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/c6/ra/c6ra15290b/c6ra15290b1.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/C6RA15290B |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
