▎ 摘　　要

NOVELTY - A metal-graphene-titanium dioxide nanotube array photocatalyst is prepared by (1) electrolyzing titanium slice substrate material in an electrolyte and sintering to obtain metal-graphene-titanium dioxide nanotube array; (2) forming a graphene-titanium dioxide nanotube array composite (I); (3) dipping the composite (I) into a metal salt solution, and irradiating with UV light to obtain the metal-graphene-titanium dioxide nanotube array photocatalyst. USE - Method for preparing metal-graphene-titanium dioxide nanotube array photocatalyst used for processing organic wastewater (claimed). ADVANTAGE - The method is simple, of low cost, and utilizes graphene and metal as common carriers of titanium dioxide photogenerated electrons to reduce the recombination rate of the photogenerated electrons and the cavity. The photocatalyst obtained has excellent property for processing water pollutants. The adsorption property of the graphene for the organic pollutants increases the degradation efficiency of the catalyst for the organic pollutants. DETAILED DESCRIPTION - A metal-graphene-titanium dioxide nanotube array photocatalyst is prepared by (1) electrolyzing titanium slice substrate material in an electrolyte and sintering to obtain a metal-graphene-titanium dioxide nanotube array; (2) forming a graphene-titanium dioxide nanotube array composite (I) by preparing an oxidation graphene dispersion liquid, taking the electrode of the metal-graphene-titanium dioxide nanotube array as a working electrode, taking a platinum electrode as a counter electrode, taking a saturated calomel electrode as a reference electrode, placing the three electrodes into the oxidation graphene dispersion liquid, reducing and deposing the graphene with a cycle volt-ampere method on the electric chemical work station; (3) dipping the composite (I) into a metal salt solution, and irradiating with UV light to obtain the metal-graphene-titanium dioxide nanotube array photocatalyst. An INDEPENDENT CLAIM is included for the metal-graphene-titanium dioxide nanotube array photocatalyst prepared from the above method.