Sonochemical driven simple preparation of nitrogen-doped carbon quantum dots/SnO2 nanocomposite: A novel electrocatalyst for sensitive voltammetric determination of riboflavin
| Autor: | Gopalakrishnan Gopu, Ganesan Muthusankar, Raman Sankar, Shen-Ming Chen, Arumugam Sangili, Nallathambi Sengottuvelan, Rajendran Karkuzhali, Chellakannu Rajkumar |
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| Rok vydání: | 2019 |
| Předmět: |
Detection limit
Materials science Nanocomposite Inorganic chemistry Metals and Alloys Riboflavin 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrocatalyst 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Linear range Carbon quantum dots Phase (matter) Electrode Materials Chemistry Electrical and Electronic Engineering 0210 nano-technology Instrumentation |
| Zdroj: | Sensors and Actuators B: Chemical. 281:602-612 |
| ISSN: | 0925-4005 |
| DOI: | 10.1016/j.snb.2018.10.145 |
| Popis: | We report a simple preparation of novel nanocomposite for the sensitive determination of riboflavin (RF) in real samples. Nitrogen-doped carbon quantum dots/SnO2 (N-CQD/SnO2) nanocomposite was prepared using sonochemical approach and applied as a voltammetric sensor for the sensitive determination of RF for the first time. The crystallographic phase, functional groups, surface analysis, and elemental distribution were examined using XRD, FT-IR, HR-TEM and EDS spectroscopic techniques respectively. This N-CQD/SnO2 nanocomposite-modified electrode shows a fast and sensitive electrochemical response to RF sensing with a good sensitivity (2.496 μA μM−1 cm-2), wide linear range (0.05–306 μM), low detection limit (8 nM) and excellent anti-interference ability. Furthermore, the developed sensor was investigated in commercial riboflavin tablets and milk powder and obtained results are quite satisfactory. |
| Databáze: | OpenAIRE |
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