▎ 摘　　要

NOVELTY - Preparation of composite antibiotic degrading photocatalyst involves mixing graphene oxide and deionized water, stirring, performing ultrasonic dispersion, mixing titanium oxide to sodium hydroxide solution in reaction vessel, stirring to dissolve, transferring to hydrothermal reaction kettle, cooling, washing, drying to obtain titanium oxide nanowire, adding to graphene oxide dispersion, mixing for 2-6 hours, sonicating for 1-3 hours, adding absolute ethanol, transferring to hydrothermal reaction kettle heating at 120-125 degrees C, washing crude product, centrifuging, drying and calcining. USE - Method for preparing composite antibiotic-degrading photocatalyst used for treating antibiotic-containing wastewater (claimed). ADVANTAGE - The method is environmental-friendly and has high efficiency. It has low operational cost, short degradation time, low feed ratio and advanced technology. It is suitable for low concentration antibiotic. DETAILED DESCRIPTION - Preparation of composite antibiotic-degrading photocatalyst involves mixing graphene oxide and deionized water, stirring, performing ultrasonic dispersion, mixing titanium oxide to sodium hydroxide solution in reaction vessel, stirring to dissolve, transferring to hydrothermal reaction kettle, cooling, washing, drying to obtain titanium oxide nanowire, adding to graphene oxide dispersion, mixing for 2-6 hours, sonicating for 1-3 hours, adding absolute ethanol, transferring to hydrothermal reaction kettle heating at 120-125 degrees C, washing crude product, centrifuging, drying to obtain graphene oxide-titanium oxide composite wire, calcining at 600-900 degrees C under inert gas or vacuum, milling and sieving. The mass ratio of absolute ethanol to graphene is 40-80:1.