▎ 摘　　要

NOVELTY - Preparing graphene-nafion modified titanium network palladium electrode by dip-pull-electrodeposition method comprises e.g. treating sodium carbonate and oxalic acid with titanium mesh, removing titanium mesh surface oxide and oil and washing with deionized water and drying, adding graphene into nafion-methanol solution, ultrasonic dispersing to obtain reduced graphene oxide dispersion, immersing the titanium mesh in the graphene dispersion liquid, drying, loading the reduced graphene oxide-nafion layer on the titanium mesh surface, and carrying out dip-pull-electrodeposition. USE - The method is useful for preparing graphene-nafion modified titanium network palladium electrode by dip-pull-electrodeposition method (claimed). ADVANTAGE - The method improves the whole stability and catalytic ability of the resultant product. DETAILED DESCRIPTION - Preparing graphene-nafion modified titanium network palladium electrode by dip-pull-electrodeposition method comprises (i) treating sodium carbonate and oxalic acid with titanium mesh, removing titanium mesh surface oxide and oil and washing with deionized water and drying under nitrogen gas atmosphere, (ii) preparing 0.1-0.5 wt.% nafion-methanol solution, adding graphene and ultrasonic dispersion evenly to obtain reduced graphene oxide dispersion, (iii) immersing the titanium mesh treated in step (i) in the graphene dispersion liquid prepared in step (ii) for a certain period of time, then pulling out titanium mesh of the graphene dispersion at a constant speed, drying at room temperature, dipping multiple times, and loading the reduced graphene oxide-nafion layer on the titanium mesh surface to obtain reduced graphene oxide nafion/titanium electrode, (iv) preparing concentration of 2-15 mmol/l of palladium chloride solution, adjusting the pH of the solution to 0.1-0.9 with hydrochloric acid, and (v) carrying out dip-pull-electrodeposition by taking reduced graphene oxide nafion/titanium electrode obtained in step (iii) as cathode, platinum film as the anode, palladium chloride solution prepared in step (iv) is a plating solution and carrying out galvanostatic deposition to obtain final product, where current density is 2.5-7.5 mA/cm2, and electrodeposition time is 15-75 minutes.