A kind of inorganic/organic semiconductor nanocomposite structure and its preparation method and application

Abstract

The invention discloses an inorganic / organic semiconductor nanocomposite structure, a preparation method and application thereof. The present invention uses titanium foil as the substrate, and the titanium substrate obtained after etching and cleaning is used to obtain the inorganic semiconductor TiO on the surface of the titanium substrate by anodic oxidation. 2 nanotube array; again with TiO 2 The nanotube array is a growth substrate, and a layer of perylene tetraacid diimide organic semiconductor thin film is deposited on the surface by physical vapor deposition, so as to obtain an inorganic / organic semiconductor nanocomposite structure. At the same time, by changing the TiO 2 The base position of the nanotube array can realize the nanocomposite structure with different organic thin film deposition amount. The method is simple and easy, and provides an experimental basis for the hierarchical assembly of inorganic and organic semiconductor materials. By studying the application of the obtained nanocomposite structure in the field of photocatalytic water splitting and hydrogen production in photoelectrochemical cells, the results show that the structure has high-efficiency photocatalytic performance.

Description

technical field [0001] The invention belongs to the field of semiconductor photocatalysis, and specifically relates to an inorganic / organic semiconductor nanocomposite structure, a preparation method and its application in photoelectrochemical cell photolysis of water to produce hydrogen. Background technique [0002] With the development of society, energy shortage and environmental pollution have become the focus of people's attention. Photocatalytic technology can convert solar energy into electrical energy and chemical energy, and has broad application prospects in the fields of energy conversion and environmental governance. Among them, photoelectrochemical photolysis of water to produce hydrogen is an important aspect of solar energy utilization, which has attracted widespread attention from various countries because of its low cost and the integration of light conversion and storage. [0003] As a kind of widely used photocatalytic materials, inorganic semiconductors...

AI Technical Summary

Problems solved by technology

But TiO 2 The self-absorption band is narrow (band gap 3.0~3.2 eV) and fixed, which limits the utilization rate of solar energy; perylene tetraacid diimide is a kind of photothermal stability and durability, wide spectral absorption range, photoelectric conversion High-efficiency organic semiconductor materials, whose absorption peaks in the visible region are in the range of 450-600 nm, are widely used in solar cell materials, photoconductive materials and other fields (Shuai Chen, RSCAdv., 2014, 4, 48486–48491)

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