Rapid preparing method of black titanium dioxide nanotube array

Abstract

The invention relates to a rapid preparing method of a black titanium dioxide nanotube array. A titanium dioxide nanotube array is prepared through an anodic oxidation method according to the structural characteristics of titanium dioxide with ethylene glycol and ammonium fluoride as the raw materials and deionized water as the solvent, the titanium dioxide nanotube array is wrapped by aluminum powder and subjected to heat treatment, and then the black titanium dioxide nanotube array is prepared. The preparing method is advanced in process, data is precise, full and accurate, the product is in a black film shape, and the section of the film is rectangular; the black titanium dioxide nanotube array is neat and uniform in arrangement, is firmly combined with a titanium substrate, has a remarkable absorption effect on ultraviolet light and visible light and can be used in solar power generation and photovoltaic products; the rapid preparing method is advanced.

Description

technical field [0001] The invention relates to a rapid preparation method of a black titanium dioxide nanotube array, which belongs to the technical field of preparation and application of inorganic functional materials. Background technique [0002] As a clean energy source, solar energy is the preferred energy source to solve energy shortage and environmental pollution. Solar energy can be converted into electrical energy and chemical energy through conversion materials; titanium dioxide has stable chemical properties, abundant resources, and non-toxicity, and is widely used in solar cells , photocatalytic field; conventional granular TiO 2 , the effective specific surface area is reduced due to the loading on the substrate, and the photogenerated electron-hole pairs generated during the application process are easy to recombine, which has become a key factor for performance improvement and application; highly ordered TiO 2 Nanotube arrays have high regularity, large spe...

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Problems solved by technology

[0002] As a clean energy source, solar energy is the preferred energy source to solve energy shortage and environmental pollution. Solar energy can be converted into electrical energy and chemical energy through conversion materials; titanium dioxide has stable chemical properties, abundant resources, and non-toxicity, and is widely used in solar cells , photocatalytic field; conventional granular TiO 2 , the effective specific surface area is reduced due to the loading on the substrate, and the photogenerated electron-hole pairs generated during the application process are easy to recombine, which has become a key factor for performance improvement and application; highly ordered TiO 2 Nanotube arrays have high regularity, large specific surface area, and excellent electron transport rate, and can be applied in the fields of solar cells and photocatalysis; due to TiO 2 The semiconductor band gap is wide Eg=3.2eV, which can only absorb 5% of the ultraviolet light of sunlight, which limits the TiO 2 Practical application in visible light; for this reason, black titanium dioxide nanotube arrays are prepared by wrapping titanium dioxide nanotube arrays with aluminum powder, which broadens the light absorption spectrum of titanium dioxide nanotube arrays and improves the visible light of titanium dioxide nanotube arrays. photoresponse; there are also high-temperature hydrogen reduction methods to prepare black titanium dioxide, but this method is poor in safety and slow; the preparation of black titanium dioxide nanotubes is still under research

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