Improvement in the performance of a nickel complex-based electrochemical sensor for the detection of nitric oxide in solution

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摘要：

The electroformation of the tetrasulfonated nickel phthalocyanine (NiTSPc) film in alkaline solution onto carbon fiber microelectrode is investigated in order to improve the electrochemical detection of nitric oxide (NO) in solution. We compare in this study the sensitivity of a carbon fiber microelectrode coated by nickel phthalocyanine deposited either by cyclic voltammetry or by controlled potential electrolysis at +1.2 V/SCE with a previously reported nickel porphyrin modified electrode. We show that the phthalocyanine film formed by cyclic voltammetry gives a modified microelectrode with a good sensitivity to NO, higher than the obtained one with nickel phthalocyanine and/or porphyrin deposited by controlled potential electrolysis.

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Experimental/ catalysts conducting polymers electrochemical electrodes electrochemical sensors electrodeposition microelectrodes nitrogen compounds organic semiconductors voltammetry (chemical analysis)/ nickel complex-based electrochemical sensor performance improvement nitric oxide detection in solution tetrasulfonated nickel phthalocyanine film electroformation carbon fiber microelectrode sensitivity cyclic voltammetry controlled potential electrolysis nickel porphyrin modified electrode electrochemical microsensor conductive polymer NO/ A8280T Chemical sensors A8280F Electrochemical analytical methods A8245 Electrochemistry and electrophoresis A8115L Deposition from liquid phases (melts and solutions) A8265J Heterogeneous catalysis at surfaces and other surface reactions/ NO/ads N /ads O/ads NO/bin N /bin O/bin