A kind of solid ion carrier and its preparation method and application

Abstract

The invention relates to a solid ion carrier and its preparation method and application. Graphene nanosheets, conductive polymer monomers, and conductive polymer monomers containing various functional groups, after stirring, ultrasonication, adding an oxidant, and then performing a polymerization reaction under water bath conditions, so that the conductive polymer monomers and the conductive polymer monomers containing various functional groups Conductive polymer monomers are in-situ polymerized on graphene nanosheets to form a nanocomposite composed of functional group-rich conductive polymer nanoparticles and graphene nanosheets, that is, a solid-state ionophore, which is mainly used as a lead ionophore. The active functional groups in the ion carrier of the present invention are more easily exposed, increasing the complexation sites of the solid carrier; and graphene can endow the ion carrier with electronic conduction and ion conduction capabilities and the conversion between the two, which solves the current problem Difficulties in electrical signal transmission in all-solid-state sensing films. The synergistic effect between the two enables the sensing membrane to have a fast and stable signal response.

Description

technical field [0001] The invention relates to the technical field of preparation and application of ion carriers, in particular to a solid ion carrier and its preparation method and application. Background technique [0002] As one of the most serious environmental pollutants, lead ions may cause a series of diseases such as anemia, mental disorders, and permanent nerve damage to the human body. Therefore, accurate measurement of Pb in the environment 2+ The content of it is particularly important for the healthy growth of human beings as a whole. Traditional methods such as atomic absorption spectrometry (AAS) and inductively coupled plasma mass spectrometry (ICP-MS) have been used to detect trace amounts of Pb. 2+ Due to the high cost of equipment and the need for professional operators, the method can only be used for detection under laboratory conditions. However, the ion selective electrode method can well meet the requirements of outdoor operation and online detec...

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Problems solved by technology

How to find a non-toxic and environmentally friendly sensing membrane material that can tolerate the embedding of active component particles from a large number of organic materials, so as to realize the stable detection of lead ions, has not been reported.

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