|Title:||A novel sensitive and reliable electrochemical determination of palmatine based on CeO <inf>2</inf> /RGO/MWCNT ternary composite||Authors:||Chen, Shen Ming
Tsai, Hsieh Chih
|Keywords:||Hydrothermal synthesis | Natural alkaloid | Neutral condition | Practical feasibility | Reliable | Ternary composite||Issue Date:||1-Mar-2019||Journal Volume:||96||Source:||Journal of the Taiwan Institute of Chemical Engineers||Abstract:||
© 2018 Taiwan Institute of Chemical Engineers A sensitive and reliable electrochemical determination of natural alkaloid palmatine was proposed based on CeO 2 /RGO/MWCNT ternary composite modified screen printed carbon electrode. The proposed ternary composite was prepared via simple hydrothermal synthesis method without using of hazardous chemicals. The surface morphology, elemental compositions, functional group moieties, crystalline structure and defects and disorder of the prepared CeO 2 /RGO/MWCNT ternary composite was confirmed by various spectrometric techniques. In addition, the electrochemical properties of the modified electrodes were investigated by voltammetry techniques. Notably, the proposed CeO 2 /RGO/MWCNT modified electrode exhibited two linear concentration ranges from 0.1 to 118 µM and 118 to 1198 µM with the lowest detection limit of 0.03 µM for the determination of palmatine at neutral condition. Additionally, the proposed electrode material showed a good sensitivity of 1. 791 µA µM −1 cm −2 and detects the palmatine with good selectivity in the presence of interfering substances. Furthermore, the practical feasibility of the sensor was analyzed in human serum and urine samples.
|Appears in Collections:||政治學系|
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