Method of electrically-assisting electroactive methane oxidizing bacteria to catalyze methane to produce methanol or formic acid

The invention provides a method of electrically-assisting electroactive methane oxidizing bacteria to catalyze methane to produce methanol or formic acid. According to the method provided by the invention, the dehydrogenase activity of the electroactive methane oxidizing bacteria is controlled by a redox potential which is controlled by a microorganism electrolysis pool, and the activity and the stability of the electroactive methane oxidizing bacteria are maintained while methanol or formic acid, serving as a chemical product, is obtained; H and electrons are produced while the electroactive methane oxidizing bacteria which are adhered to the surface of an anode of the microorganism electrolysis pool metabolize methane to producemethanol or formic acid, and H and electrons are combined on the surface of the cathode under the action of electrically assisting and a cathode catalyst. The method is capable of solving the problems of synthesizing methanol or formic acid by traditional chemical reaction of high energy consumption and low efficiency of the cathode catalyst and preventing further deep oxidation of methanol and formic acid to produce CO2 in the process of bio-catalytically oxidizing methane to produce methanol or formic acid; according to the method provided by the invention, the whole reaction process is carried out under mild conditions and is environmentally friendly.