Enhanced simultaneous detection of ractopamine and salbutamol – Via electrochemical-facial deposition of MnO 2 nanoflowers onto 3D RGO/Ni foam templates

Abstract

. (2016). Enhanced simultaneous detection of ractopamine and salbutamol -Via electrochemical-facial deposition of MnO2 nanoflowers onto 3D RGO/Ni foam templates. Biosensors and Bioelectronics, Enhanced simultaneous detection of ractopamine and salbutamol -Via electrochemical-facial deposition of MnO2 nanoflowers onto 3D RGO/ Ni foam templates AbstractIn this paper, we report a facile method to successfully fabricate MnO2 nanoflowers loaded onto 3D RGO@nickel foam, showing enhanced biosensing activity due to the improved structural integration of different electrode materials components. When the as-prepared 3D hybrid electrodes were investigated as a binder-free biosensor, two well-defined and separate differential pulse voltammetric peaks for ractopamine (RAC) and salbutamol (SAL) were observed, indicating the simultaneous selective detection of both β-agonists possible. The MnO2/RGO@NF sensor also demonstrated a linear relationship over a wide concentration range of 17nM to 962nM (R=0.9997) for RAC and 42nM to 1463nM (R=0.9996) for SAL, with the detection limits of 11.6nM for RAC and 23.0nM for SAL. In addition, the developed MnO2/ RGO@NF sensor was further investigated to detect RAC and SAL in pork samples, showing satisfied comparable results in comparison with analytic results from HPLC.

Facile Synthesis of MnO2 Nanoflowers/N-Doped Reduced Graphene Oxide Composite and Its Application for Simultaneous Determination of Dopamine and Uric Acid

“…As a versatile transition metal oxide, MnO 2 has been intensively utilized in energy storage, catalysis, and sensors because of its peculiar properties including low-cost, more abundance, high-catalytic activity, and environmental friendliness. Until now, a variety of nanostructured MnO 2 such as nanowires [16,22], nanorods [17,23,24], nanotubes [25,26], microspheres [27,28], and nanoflowers [29,30] have been prepared, characterized, and even used in electrochemical determination. Among these morphologies, MnO 2 nanoflowers (MnO 2 NFs) have drawn considerable attention, attributing to their pore structure and large specific surface area.…”

“…Among these morphologies, MnO 2 nanoflowers (MnO 2 NFs) have drawn considerable attention, attributing to their pore structure and large specific surface area. As sensing materials, MnO 2 nanoflowers have been used for the detection of lead ion [29], ractopamine [30], salbutamol [30], guaiacol [31], vanillin [31], hydrogen peroxide [32], and DA [33]. These studies demonstrate that MnO 2 nanoflowers improve the electrochemical performances significantly.…”

Efficient Photocatalytic Degradation of Malachite Green in Seawater by the Hybrid of Zinc-Oxide Nanorods Grown on Three-Dimensional (3D) Reduced Graphene Oxide(RGO)/Ni Foam

“…The GO spraying process (15 min) was carried out under an air flow (8 L min −1 ) towards the Ni foam, which was placed on a hot plate (80 °C) to enhance/promote the solvent evaporation. After spaying, the GO coated Ni foam (GO@NF) was dried in the air overnight [35]. …”

“…In our previous work, we reported a facilely prepared three-dimensional (3D) RGO modified nickel foam (RGO@NF), which can be used as an ideal solid substrate to provide photocatalysts with high specific surface and good electronic transport capability [35]. In this work, ZnO nanorods were grown on this 3D RGO@NF template by a facile hydrothermal method (ZnO/RGO@NF).…”

Facile synthesis of a 3D MnO2 nanowire/Ni foam electrode for the electrochemical detection of Cu(ii)

“…Recently, MnO 2 could be directly grown on a substrate as a working electrode for electrochemical detection applications. [9][10][11] For example, MnO 2 nanoowers grown on 3D RGO@nickel foam as an electrode were applied in the highly sensitive detection of ractopamine and salbutamol. 9 MnO 2 nanosheets grown on 3D carbon foam were applied in the highly sensitive non-enzymatic detection of hydrogen peroxide.…”