Caffeic acid in the application of chemically modified electrodes

Promulgator: ：admin 　 Send date: ：2011-11-28 09:47　Visitor: ：

      Chemically modified electrode is the mid-1970s, developed a new, and is currently the most active electrochemical and electroanalytical chemistry frontier. Chemically modified electrode is the electrode surface molecular design, excellent chemical properties of molecules, ions, polymers with chemical film on the electrode surface in the form of fixed, so that the electrode has a specific chemical and electrochemical properties. Chemically modified electrode electrochemical expanded field of study has been widely used in life, environment, energy, analysis, electronics and materials science and other aspects.

    General chemically modified electrode is adsorption, but this is often the life of the electrode prepared a short, poor reproducibility, does not meet the growing research needs.Recently, some domestic well-known research institutions through biochemical studies have shown that caffeic acid can be used as materials used in electro-catalytic oxidation of chemically modified electrodes。

General form of compounds containing the o-quinone electron transport chain of the important catalytic material has good power. Caffeic acid is a compound with o-quinone form of the modified electrode has a good effect. Caffeic acid to the electrode surface modification process is divided into two steps: The first step, when the oxidation potential scan, caffeic acid is oxidized to quinone；The second step, a glassy carbon electrode surface active groups (hydroxyl) attack quinone, such cooperation through the keys with caffeic acid deposited on the electrode on the surface, so caffeic acid in the form of molecular modification on the electrode surface. By authority of the experiments show that caffeic acid modified electrode has good catalytic stability and strong benefits.

Experts have asserted, caffeic acid, chemically modified electrodes will further expand the applications.