▎ 摘　　要

NOVELTY - Preparation of graphene oxide-coated carbon fiber-silver-loaded titanium dioxide nanowire array composite material involves (a) ultrasonically cleaning carbon fiber with deionized water and ethanol, carrying out constant-voltage electrodeposition of graphene oxide solution on carbon fiber using platinum wire and silver/silver chloride and drying, and (b) mixing graphene oxide-coated carbon fiber-titanium dioxide nanowire array with silver nitrate solution, ultrasonically dispersing, stirring, carrying out centrifugal separation, washing with deionized water, drying and calcining. USE - Method is useful for preparing graphene oxide-coated carbon fiber-silver-loaded titanium dioxide nanowire array composite material, which is useful in photocatalytic degradation of binary dye wastewater comprising methyl orange and rhodamine B (claimed). ADVANTAGE - The graphene oxide-coated carbon fiber-silver-loaded titanium dioxide nanowire array composite material has high degradation efficiency under visible light of 96% and excellent photocatalytic effect and is easy to separate and recycle. DETAILED DESCRIPTION - Preparation method of graphene oxide-coated carbon fiber-silver-loaded titanium dioxide nanowire array composite material involves (a) ultrasonically cleaning 2-5 cm long carbon fiber with deionized water and ethanol for 30 minutes, carrying out constant-voltage electrodeposition of 3-8 mg/ml graphene oxide solution on carbon fiber as a working electrode using platinum wire as a counter electrode and silver/silver chloride as a reference electrode at 1.2 V for of 90-120 seconds and drying for 10-15 hours to obtain graphene oxide-coated carbon fiber, and (b) mixing 0.4-1.5 g graphene oxide-coated carbon fiber-titanium dioxide nanowire array prepared according to patent number 201410506263.X with 100 ml 0.01-0.1% silver nitrate solution, ultrasonically dispersing for 10 minutes, stirring, carrying out centrifugal separation, washing obtained sample with deionized water, drying at 80-100 degrees C, calcining resulting solid powder in a muffle furnace at 450-500 degrees C for 1.5-2.5 hours to obtain composite material. An INDEPENDENT CLAIM is included for use of graphene oxide-coated carbon fiber-silver-loaded titanium dioxide nanowire array composite material in the photocatalytic degradation of binary dye wastewater comprising methyl orange and rhodamine B.