Electrochemical Behavior of o‐Nitrophenol at Hexagonal Mesoporous Silica Modified Carbon Paste Electrodes |
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Authors: | Changli Zhou Zhen Liu Yanmin Dong Dongmei Li |
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Affiliation: | College of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong 250022, P.?R. China |
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Abstract: | A hexagonal mesoporous silica (HMS) modified carbon paste electrode (CPE) was fabricated and characterized by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) methods (ferrocene as a probe). The electrochemical behavior of nitrophenol (o‐NP) at the HMS modified electrode (HMSCPE) was investigated. Compared with CPE, a well‐defined reduction peak and a remarkably peak current response was observed. It is indicated that mesoporous HMS exhibited remarkable enhancement effects on the electrochemical reduction of o‐NP. The electrochemical reduction mechanism was also discussed. Consequently, a simple and sensitive electrochemical method was proposed for the determination of o‐NP, which was used to determine o‐NP in waste water samples. |
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Keywords: | Hexagonal mesoporous silica Carbon paste electrode o‐Nitrophenol Chemically modified electrodes |
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