Rare earth erbium molybdate nanoflakes decorated functionalized carbon nanofibers : An affordable and potential catalytic platform for the electrooxidation of phenothiazine

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

3 Scopus Citations
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Author(s)

  • Xinke Liu
  • Jr-Hau He
  • Rajalakshmi Sakthivel
  • Ren-Jei Chung

Detail(s)

Original languageEnglish
Article number136885
Journal / PublicationElectrochimica Acta
Volume358
Online published10 Aug 2020
Publication statusPublished - 20 Oct 2020

Abstract

Currently, the sonochemical synthesis method has received considerable attention due to its cost-effectiveness, simplicity, and ease of operation compared to other conventional synthesis methods. Significantly, rare earth metal-doped molybdates are promising materials in the fields of photo- and electrochemical detection. Herein, a flake-like structured erbium molybdate (Er2MoO6)/functionalized carbon black (f-CNF) composite was synthesized via a facile sonochemical synthesis method. The resultant materials were characterized through spectrophotometric techniques, and the f-CNF/Er2MoO6-modified screen-printed electrode (SPE) was fabricated for the electrochemical detection of phenothiazine (PTZ). The electrocatalytic oxidation behavior of PTZ on a modified electrode was tested using cyclic voltammetry (CV) and differential pulse voltammetry (DPV). Interestingly, the fabricated f-CNF/Er2MoO6-modified SPE was characterized to have a broad dynamic linear range from 0.025 to 80 µM, a limit of detection (LOD) of 0.008 µM, and a sensitivity of 3.707 μA μM−1 cm−2 towards the electrochemical oxidation of PTZ. Moreover, the PTZ sensor exhibited good stability, selectivity, and well precision. The practicality of the PTZ sensor was tested in human urine samples.

Research Area(s)

  • Differential pulse voltammetry, Erbium molybdate, Functionalized carbon nanofiber, Human urine sample, Phenothiazine

Citation Format(s)

Rare earth erbium molybdate nanoflakes decorated functionalized carbon nanofibers : An affordable and potential catalytic platform for the electrooxidation of phenothiazine. / Liu, Xinke; He, Jr-Hau; Sakthivel, Rajalakshmi; Chung, Ren-Jei.

In: Electrochimica Acta, Vol. 358, 136885, 20.10.2020.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review