The preparation of carbon-encapsulated Fe/Co nanoparticles and their novel applications as bifunctional catalysts to promote the redox reaction for <Emphasis Type="Italic">p</Emphasis>-nitrophenol |
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Authors: | Jun Xue Houkui Xiang Kaipeng Wang Xiaorong Zhang Shengjun Wang Xuehua Wang Hong Cao |
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Affiliation: | (1) School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan, 430073, China;(2) Wuhan Research Institute of Materials Protection, Wuhan, 430030, China |
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Abstract: | As a common organic pollutant in industrial and agricultural wastewater, p-Nitrophenol (p-NP) is difficult to be degraded naturally. Though, various methods have been developed for degradation of p-NP, the utilization of catalysts to electrochemically degrade p-NP became a novel effective way. In this article, two magnetic nanoparticles (carbon-encapsulated iron, Fe/C; carbon-encapsulated
cobalt, Co/C) were prepared. Through a series of physical phase characterization, we found that the average dimension of the
prepared magnetic nanoparticles arrived at 60 nm for Fe/C and 80 nm for Co/C, and within such small dimensions, the prepared
nanoparticles might have some remarkable catalytic characters in electrochemical degradation of p-NP. Therefore, two novel types of Fe/C and Co/C modified glassy carbon electrodes were fabricated to investigate their catalytic
activity for p-NP degradation. In our results, both of the two modified electrodes showed favorable stability and excellent electro-catalytic
activity for p-NP degradation. In addition, two modified electrodes also exhibited favorable electro-catalytic reductive ability for p-NP. The electrochemical reactions on the surface of the two modified electrodes were all diffusion controlled processes.
Therefore, Fe/C and Co/C were excellent bifunctional catalysts which could be considered as a practical way to be applied
in industrial hydrogenation and oxidative degradation of organic compounds. |
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