title: Facile Fabrication of Mn2O3 Nanoparticle-Assembled Hierarchical Hollow Spheres and Their Sensing for Hydrogen Peroxide.
abstract: In the present work, we described the facile hydrothermal fabrication of Mn2O3 nanoparticle-assembled hierarchical hollow spheres and their application for the electrochemical determination of hydrogen peroxide (H2O2). The composition and morphology of the as-prepared samples were well characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). Because of the electrochemical responses toward H2O2, a novel nonenzymatic electrochemical sensor for the H2O2 determination based on Mn2O3 hollow spheres modified glassy carbon electrode was proposed. The electrochemical properties of the modified electrode were investigated by cyclic voltammetry, electrochemical impedance spectroscopy and chronoamperometry. The modified electrode displayed distinct amperometric response to H2O2 in a wide concentration range 0.10-1276.5 μM, with a linear range of 0.10-126.5 μM and a detection limit of 0.07 μM (S/N = 3). It exhibited excellent analytical performance in terms of long-time stability, good reproducibility and acceptable anti-interference ability. In addition, it was applied for the H2O2 determination in real samples directly with acceptable accuracy and recovery, demonstrating its potential application in routine H2O2 analysis.
authors.affiliation: †College of Chemical Engineering, Sichuan University, Chengdu 610065, PR China.|‡Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics (CAEP), Mianyang 612900, PR China.
authors.forename: Changming
authors.initials: C
authors.lastname: Cheng
authors.affiliation: †College of Chemical Engineering, Sichuan University, Chengdu 610065, PR China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Huang
authors.affiliation: ‡Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics (CAEP), Mianyang 612900, PR China.
authors.forename: Ning
authors.initials: N
authors.lastname: Wang
authors.affiliation: ‡Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics (CAEP), Mianyang 612900, PR China.
authors.forename: Tao
authors.initials: T
authors.lastname: Jiang
authors.affiliation: ‡Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics (CAEP), Mianyang 612900, PR China.
authors.forename: Sheng
authors.initials: S
authors.lastname: Hu
authors.affiliation: §College of Chemistry, Sichuan University, Chengdu 610064, PR China.
authors.forename: Baozhan
authors.initials: B
authors.lastname: Zheng
authors.affiliation: †College of Chemical Engineering, Sichuan University, Chengdu 610065, PR China.
authors.forename: Hongyan
authors.initials: H
authors.lastname: Yuan
authors.affiliation: †College of Chemical Engineering, Sichuan University, Chengdu 610065, PR China.|§College of Chemistry, Sichuan University, Chengdu 610064, PR China.
authors.forename: Dan
authors.initials: D
authors.lastname: Xiao
keywords: H2O2; Mn2O3; fabrication; hollow spheres; modified electrode