Manganese oxides/carbon nanowall nanocomposite electrode as an efficient non-enzymatic electrochemical sensor for hydrogen peroxide
Plasma-enhanced chemical vapor deposition in a CO/H2 microwave discharge system was performed for synthesizing of carbon nanowalls template and subsequently potentiostatic anodic deposition technique was applied for depositing of manganese oxides onto the carbon nanowall surfaces. Characterization o...
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| Format: | Article |
| Language: | English |
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Elsevier
2021-02-01
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| Series: | Sensing and Bio-Sensing Research |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214180420302178 |
| _version_ | 1818675958652076032 |
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| author | Fatemeh Bohlooli Ayumu Yamatogi Shinsuke Mori |
| author_facet | Fatemeh Bohlooli Ayumu Yamatogi Shinsuke Mori |
| author_sort | Fatemeh Bohlooli |
| collection | DOAJ |
| description | Plasma-enhanced chemical vapor deposition in a CO/H2 microwave discharge system was performed for synthesizing of carbon nanowalls template and subsequently potentiostatic anodic deposition technique was applied for depositing of manganese oxides onto the carbon nanowall surfaces. Characterization of the synthesized nanocomposite films was done via scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The electrochemical properties of MnOx/CNW electrode were investigated by cyclic voltammetry and amperometry techniques. The prepared nanocomposite electrode exhibited high electrochemical activity for the detection of hydrogen peroxide (H2O2) in phosphate buffer solution at an applied potential of +0.7 V, showing a linear dependence on the concentration of H2O2 from 40 μM to 10,230 μM, a high sensitivity (698.6 μA mM−1 cm−2), and a detection limit of 0.55 μM (signal/noise = 3). The sensor exhibited good selectivity toward hydrogen peroxide detection against ascorbic acid, uric acid, and citric acid. This study demonstrates a great potential of CNW based composite electrodes in nonenzymatic electrochemical sensor application. |
| first_indexed | 2024-12-17T08:35:51Z |
| format | Article |
| id | doaj.art-48d3c0cf77bd44debc267e2135b37011 |
| institution | Directory Open Access Journal |
| issn | 2214-1804 |
| language | English |
| last_indexed | 2024-12-17T08:35:51Z |
| publishDate | 2021-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Sensing and Bio-Sensing Research |
| spelling | doaj.art-48d3c0cf77bd44debc267e2135b370112022-12-21T21:56:28ZengElsevierSensing and Bio-Sensing Research2214-18042021-02-0131100392Manganese oxides/carbon nanowall nanocomposite electrode as an efficient non-enzymatic electrochemical sensor for hydrogen peroxideFatemeh Bohlooli0Ayumu Yamatogi1Shinsuke Mori2Corresponding author.; Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguru-ku, Tokyo 152-8550, JapanDepartment of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguru-ku, Tokyo 152-8550, JapanDepartment of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguru-ku, Tokyo 152-8550, JapanPlasma-enhanced chemical vapor deposition in a CO/H2 microwave discharge system was performed for synthesizing of carbon nanowalls template and subsequently potentiostatic anodic deposition technique was applied for depositing of manganese oxides onto the carbon nanowall surfaces. Characterization of the synthesized nanocomposite films was done via scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The electrochemical properties of MnOx/CNW electrode were investigated by cyclic voltammetry and amperometry techniques. The prepared nanocomposite electrode exhibited high electrochemical activity for the detection of hydrogen peroxide (H2O2) in phosphate buffer solution at an applied potential of +0.7 V, showing a linear dependence on the concentration of H2O2 from 40 μM to 10,230 μM, a high sensitivity (698.6 μA mM−1 cm−2), and a detection limit of 0.55 μM (signal/noise = 3). The sensor exhibited good selectivity toward hydrogen peroxide detection against ascorbic acid, uric acid, and citric acid. This study demonstrates a great potential of CNW based composite electrodes in nonenzymatic electrochemical sensor application.http://www.sciencedirect.com/science/article/pii/S2214180420302178Carbon nanowallsManganese oxidesCyclic voltammetryAmperometryHydrogen peroxide |
| spellingShingle | Fatemeh Bohlooli Ayumu Yamatogi Shinsuke Mori Manganese oxides/carbon nanowall nanocomposite electrode as an efficient non-enzymatic electrochemical sensor for hydrogen peroxide Sensing and Bio-Sensing Research Carbon nanowalls Manganese oxides Cyclic voltammetry Amperometry Hydrogen peroxide |
| title | Manganese oxides/carbon nanowall nanocomposite electrode as an efficient non-enzymatic electrochemical sensor for hydrogen peroxide |
| title_full | Manganese oxides/carbon nanowall nanocomposite electrode as an efficient non-enzymatic electrochemical sensor for hydrogen peroxide |
| title_fullStr | Manganese oxides/carbon nanowall nanocomposite electrode as an efficient non-enzymatic electrochemical sensor for hydrogen peroxide |
| title_full_unstemmed | Manganese oxides/carbon nanowall nanocomposite electrode as an efficient non-enzymatic electrochemical sensor for hydrogen peroxide |
| title_short | Manganese oxides/carbon nanowall nanocomposite electrode as an efficient non-enzymatic electrochemical sensor for hydrogen peroxide |
| title_sort | manganese oxides carbon nanowall nanocomposite electrode as an efficient non enzymatic electrochemical sensor for hydrogen peroxide |
| topic | Carbon nanowalls Manganese oxides Cyclic voltammetry Amperometry Hydrogen peroxide |
| url | http://www.sciencedirect.com/science/article/pii/S2214180420302178 |
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