Synthesis And Properities Of Boric Acid And Its Derivatives Modified Carbon Materials

Carbon materials have been widely used in the areas of absorption,catalysis,electrochemistry,biomedicine and so forth because of their high surface areas,stable chemical or physical properties and environment-friendly performance.In recent years,there has been increased interest in coating surfaces of carbon materials to increase their potential applications.Carbon sphere of uniform partical size and oxidized grapheme were prepared with low temperature hydrothermal and optimized Hummers methods,respectively.Both of the two carbon materials with rich-carboxyl in surface were generated by oxidizing.After that,amino-functionalized carbon sphere and grapheme can be prepared with 3-aminophenylboronic acid without special protection.The structure of the carbon materials was characterized by infrared spectroscopy,scanning electron microscope and elemental analysis.Four kinds of boronic acid-functionalized carbon sphere were prepared by reacting with boric acid,boronic acid and 3-aminophenylboronic acid in the presence of salicylaldehyde and ethylenediaminecarboxyl.The products were characterized by infrared spectroscopy,scanning electron microscopy and elemental analysis.Moreover,UV-visible absorption spectroscopy were used to study the interaction between the four carbon spheres and the fructose or metallic copper ion in the presence of alizarin red to further explore the structure of the surface-modified carbon materials.Fluorescence spectroscopy showed that the carbon materials by means of the benzene and ethylene diamine alkali borate schiff have good ball fluorescence emission performance which can be used into the study of LET marking.Therefore,the boronic acid-functionlized carbon materias wih good stability,optical properties and molecules or ions sensitivity will have broad application prospects in various areas.