▎ 摘　　要

NOVELTY - Preparation of reduced graphene oxide (RGO)/manganese/titania nanotubes (TNTs) photoelectrode involves forming reduced graphene oxide-deposited manganese/TNT photoelectrode using manganese/TNTs photoelectrode as working electrode, platinum sample as counter electrode, saturated calomel electrode as reference electrode and graphene oxide in sodium sulfate as electrolyte, controlling the constant potential to -0.1 V to -2 V and reaction time as 1-50 minutes, rinsing resultant material, controlling the temperature to 10-200 degrees C and vacuum drying for 1-20 hours. USE - Preparation of reduced graphene oxide/manganese/titania nanotubes photoelectrode. ADVANTAGE - The method efficiently provides reduced graphene oxide/manganese/titania nanotubes photoelectrode having improved photo-generated charge separation and carbon dioxide reduction performance. DETAILED DESCRIPTION - The manganese oxide (MnOx)-modified TNT array photoelectrode is obtained by anodizing metal titanium foil using pretreated titanium foil as anode, platinum sheet as cathode and ammonium fluoride solution of glycerol as electrolyte solution, controlling the anodization voltage to 5-20 V and oxidation time as 1-5 hours, removing metal titanium foil, washing using deionized water, drying, placing in a muffle furnace, controlling the temperature as 100-800 degrees C, calcining for 2-10 hours, obtaining titania nanotube array, adding acetic acid to potassium manganate solution, magnetically stirring for 5-100 minutes, adding titania nanotube array, immersing in a vacuum drying oven for 1-10 hours, removing, placing into vacuum drying oven, controlling the temperature to 10-100 degrees C and drying at 10-600 degrees C for 1-10 hours under nitrogen atmosphere.