Application of graphite-like carbon nitride nano material as electrochemical modified electrode material in detection of methyl mercury

Abstract

The invention discloses an application of a graphite-like carbon nitride nano material as an electrochemical modified electrode material in detection of methyl mercury. During application, the detection method comprises the steps of putting a to-be-used nano composite material into deionized water to form a suspension; fully coating the outer surface of the electrode, and air-drying to obtain an electrochemically modified electrode, taking the electrochemically modified electrode as a working electrode in a three-electrode system of an electrochemical workstation, and detecting the concentration of the methyl mercury ions in the to-be-detected liquid under the power-on state of the three-electrode system. According to the invention, the dispersibility and high surface area can be provided,the electronic band gap is adjusted, the ionic conductivity is improved, the defects of low sensitivity and high detection limit of the existing electrochemical detection technology on methyl mercuryion detection are improved, and the detection limit is far lower than a standard value specified by WHO.

Description

technical field [0001] The invention relates to the field of electrochemical analysis and detection, in particular to an electrochemical detection method for detecting the concentration of methylmercury ions, the application of graphite-like carbon nitride nanomaterials as electrochemically modified electrode materials for detecting methylmercury, graphite-like Application of carbon nitride-doped sulfur-doped nanocomposites as electrochemically modified electrode materials for the detection of methylmercury, a method for preparing graphite-like carbon nitride nanomaterials, and a graphite-like carbon nitride-doped sulfur-doped nanocomposite Methods of preparation of composite materials. Background technique [0002] With the increase of population, the rapid advancement of urbanization and industrialization, the discharge of industrial "three wastes", the excessive use of urban domestic sewage, pesticides and chemical fertilizers, have caused a large number of heavy metal po...

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Problems solved by technology

[0004] In order to overcome the disadvantages of low sensitivity, high detection limit and poor stability of the existing electrochemical detection technology for the analysis and detection of methylmercury ions, the present invention provides an electrochemical detection method for detecting the concentration of methylmercury ions, a graphite-like phase Application of carbon nitride nanomaterials as electrochemically modified electrode materials in the detection of methylmercury, application of graphite-like phase carbon nitride nanocomposites with sulfur doped elements as electrochemically modified electrode materials in the detection of methylmercury, a graphite-like phase Preparation method of phase carbon nitride nanomaterial, and preparation method of a graphite-like phase carbon nitride nanocomposite material doped with sulfur elements

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