Journal
MATERIALS
Volume 12, Issue 21, Pages -Publisher
MDPI
DOI: 10.3390/ma12213637
Keywords
VXC-72R/ZrO2/GCE nanocomposite electrode; synergetic effect; electrochemical sensor; methyl parathion
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Funding
- National Key R&D Program of China [2017YFD0301104]
- High-Level Talents Startup Project of the Henan Institute of Science and Technology [103010615001]
- Henan Postdoctoral Fund Project [159831]
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In this work, a carbon black (VXC-72R)/zirconia (ZrO2) nanocomposite-modified glassy carbon electrode (GCE) was designed, and a VXC-72R/ZrO2/GCE-based electrochemical sensor was successfully fabricated for the high-sensitivity detection of methyl parathion (MP). Electrochemical measurements showed that the VXC-72R/ZrO2/GCE-based electrochemical sensor could make full use of the respective advantages of the VXC-72R and ZrO2 nanoparticles to enhance the MP determination performance. The VXC-72R nanoparticles had high electrical conductivity and a large surface area, and the ZrO2 nanoparticles possessed a strong affinity to phosphorus groups, which could achieve good organophosphorus adsorption. On the basis of the synergistic effect generated from the interaction between the VXC-72R and ZrO2 nanoparticles, the VXC-72R/ZrO2/GCE-based electrochemical sensor could show excellent trace analysis determination performance. The low detection limit could reach up to 0.053 mu M, and there was a linear concentration range of 1 mu M to 100 mu M. Such a high performance indicates that the VXC-72R/ZrO2/GCE-based electrochemical sensor has potential in numerous foreground applications.
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