|Title:||Facile synthesis of Mn<inf>2</inf>O<inf>3</inf> for highly active catalytic oxidation and reduction of organic substances and electrochemical determination of L-Methionine||Authors:||Rwei, Syang Peng
Yu, Ming Chin
Chen, Shen Ming
Chen, Tse Wei
|Keywords:||Amino acid | L-Methionine | Manganese oxide | P-Nitrophenol | Wild Salman||Issue Date:||1-May-2018||Journal Volume:||13||Journal Issue:||5||Source:||International Journal of Electrochemical Science||Abstract:||
© 2018 The Authors. This paper reports the electrochemical determination of L-Methionine (L-Met) in phosphate buffer solution (pH = 7.0) utilizing the Mn2O3 on screen-printed carbon electrode (Mn2O3/SPCE) and Mn2O3 catalyst display excellent activity for catalytic reduction of p-Nitrophenol. Initially, as-prepared Mn2O3 were characterized by various analytical methods. From the electrochemical studies bare SPCE showed an ill-defined oxidation peak around 1.214 (±0.02) V for L-Met whereas Mn2O3/SPCE showed a well-defined oxidation peak at 1.173 (±0.02) V. Under optimum conditions, the Mn2O3/SPCE showed a linear range of L-Met concentrations of 1.0 × 10-6 to 6.1 x 10-4 M. The limit of detection is about 1.0 × 10-9 M (S/N = 3). The presently modified working electrode has also been effectively applied for the determination of L-Met in real sea food samples. The Mn2O3 signifies user-friendly, strong and high sensitive with real applications for electrochemical determination of amino acids as well as catalytic reduction of p-Nitrophenol.
|Appears in Collections:||政治學系|
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