Multilayer film material

Abstract

The invention discloses a multilayer film material. The preparation method comprises the steps: adding a titanium source compound and an antimony source compound into a hydrochloric acid solution; stirring and mixing, inserting conductive glass into the mixed solution, carrying out hydrothermal reaction, and calcining at high temperature to obtain an antimony-doped titanium dioxide nano-electrode;then putting the antimony-doped titanium dioxide nano-electrode into a phosphoric acid aqueous solution, and carrying out hydrothermal treatment to obtain an antimony-doped titanium dioxide nano-electrode; and carrying out electro-polymerization deposition by taking the antimony-doped titanium dioxide nano-electrode as a working electrode to obtain the polypyrrole / antimony-doped titanium dioxidemultilayer film electrode. According to the prepared polypyrrole / antimony-doped titanium dioxide multilayer film electrode, antimony ion doping is carried out, the activity of TiO2 under visible lightis improved, polypyrrole nanowires are deposited on the surface of a titanium dioxide film to form p-n heterojunctions, and directional movement of electrons and holes is induced, so that the recombination probability of electron-hole pairs is reduced, and the electrode activity of the material is further improved.

Description

technical field

[0001] The invention belongs to the technical field of electrochemistry, and in particular relates to a multilayer film material. Background technique

[0002] Photocatalytic materials have been a hotspot in materials science and catalytic science research in recent years. As a semiconductor material, titanium dioxide is widely used in solar cells, supercapacitors, electrocatalysis and water splitting due to its unique physical and chemical properties. However TiO 2 The band gap energy is large, the recombination rate of photogenerated carriers is high, the utilization rate of solar energy is low, and the quantum efficiency is low. Therefore, it is necessary to improve the TiO-based 2 The utilization rate of visible light of photocatalysts and the reduction of the recombination probability of electron-hole pairs. At present, the specific modification methods include ion doping, noble metal deposition, semiconductor compounding, organic dye modification and...