Next Article in Journal
A DFT Study of Acetylene Hydrogenation Catalyzed by S-Doped Pd1/g-C3N4
Previous Article in Journal
Synthesis of Diesel and Jet Fuel Range Cycloalkanes with Cyclopentanone and Furfural
Previous Article in Special Issue
Efficient Photocatalytic Hydrogen Peroxide Production over TiO2 Passivated by SnO2
Open AccessArticle

Facile Fabrication of Metal Oxide Based Catalytic Electrodes by AC Plasma Deposition and Electrochemical Detection of Hydrogen Peroxide

1
Department of Chemistry, Hannam University, Daejeon 34054, Korea
2
Plasma Technology Research Center, National Fusion Research Institute (NFRI), Gunsan 54004, Korea
3
Daeyong Regional Infrastructure Technology Development Center, Kyungpook National University, Daegu 41556, Korea
4
School of Engineering, Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, NSW 2308, Australia
*
Authors to whom correspondence should be addressed.
Catalysts 2019, 9(11), 888; https://doi.org/10.3390/catal9110888
Received: 11 October 2019 / Revised: 22 October 2019 / Accepted: 22 October 2019 / Published: 25 October 2019
In this study, the fabrication of a metal oxide nanoparticles (NPs) dispersed catalytic electrode is described based on a new alternating current (AC) plasma deposition approach. The fabrication involves the treatment of AC plasma on a precursor solution comprised of metal salts such as CuCl2, FeCl2, and ZnCl2, and a monomer (acrylic acid) in the presence/absence of a cross-linker. Furthermore, the utility of such developed electrodes has been demonstrated for the electrochemical determination of hydrogen peroxide (H2O2). The electrode materials obtained through plasma treatment was characterized by Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscope (SEM), contact angle measurements, energy-dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), and cyclic voltammetry. Among the metal oxide modified electrodes prepared by the AC plasma deposition method, the copper oxide (CuO) NPs catalytic electrode exhibited significant oxidation and reduction peaks for H2O2 in phosphate-buffered saline solution. The catalytic electrode with CuO NPs exhibited a combination of good H2O2 sensing characteristics such as good sensitivity (63.52 mA M−1 cm−2), good selectivity, low detection limits (0.6 µM), fast sensing response (5 s), a wide linear range (0.5–8.5 mM), and good stability over 120 cycles. Based on our results, it is well demonstrated that plasma deposition could be effectively utilized for the fabrication of the catalytic electrode for detection of H2O2 concentrations. Further, the strategy of using AC plasma for fabrication of metal oxide-based modified electrodes could also be extended for the fabrication of other kinds of nanomaterials-based sensors. View Full-Text
Keywords: catalytic electrode; plasma deposition; hydrogen peroxide; CuO; sensor performances catalytic electrode; plasma deposition; hydrogen peroxide; CuO; sensor performances
Show Figures

Figure 1

MDPI and ACS Style

Bui, Q.-T.; Yu, I.-K.; Gopalan, A.I.; Saianand, G.; Kim, W.; Choi, S.-H. Facile Fabrication of Metal Oxide Based Catalytic Electrodes by AC Plasma Deposition and Electrochemical Detection of Hydrogen Peroxide. Catalysts 2019, 9, 888.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop