Method for preparing double-side TiO2 nanotube array material with surface modified by silver nanoparticles through ultrasonic atomization-ultraviolet reduction combination

Abstract

The invention relates to a method for preparing a double-side TiO2 nanotube array material with the surface modified by silver nanoparticles through ultrasonic atomization-ultraviolet reduction combination and relates to a preparation method of double-side TiO2 nanotube arrays with the surfaces modified by silver nanoparticles. The problems that silver-loaded particles of an Ag-doped TiO2 nanotube array material prepared through an existing method are large, and distribution of the silver-loaded particles on a nanotube array is not uniform are solved. The method includes the steps that firstly, electric conductive liquid is prepared; secondly, a double-side TiO2 nanotube array is prepared and contained in a quartz tube; thirdly, a silver nitrate solution is prepared and poured into an ultrasonic atomization instrument to form vaporous small drops containing Ag+, the vaporous small drops containing Ag+ are introduced into the quartz tube, ultraviolet irradiation is performed under nitrogen atmosphere, and then operation is completed. Surface modification of the silver nanoparticles is achieved through an ultrasonic atomization method, silver ions are modified on the surface of the double-side TiO2 nanotube array in small size and are evenly distributed on the double-side TiO2 nanotube array, and the photocatalytic activity of the TiO2 nanotube array is remarkably improved.

Description

technical field [0001] The invention relates to silver nanoparticles surface modified double-sided TiO 2 Preparation method of nanotube arrays. Background technique [0002] The preparation methods of Ag-doped titania nanotube arrays include ultraviolet photocatalytic reduction method, chemical reduction method, thermal deposition method, pulsed laser deposition method and so on. Ultraviolet light reduction, chemical reduction, thermal deposition, and pulsed laser deposition are used to reduce the silver ions attached to the nanotube array to Ag simple substance to realize the surface modification of the titanium dioxide nanotube array. The doping of silver ions is mostly achieved by impregnation. When the impregnation method and ultraviolet light reduction are combined to achieve the doping of Ag on the titanium dioxide nanotube array, the Ag particles are generally relatively large, and the distribution on the titanium dioxide nanotube array is uneven, so that the photoc...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the Ag-doped titania nanotube array material prepared by the existing method, which has large silver-loaded particles and uneven distribution on the nanotube array, so that the TiO2 cannot be effectively increased or even reduced. 2 In view of the problem of photocatalytic activity of nanotube arrays, a method of ultrasonic atomization-ultraviolet photoreduction combined to prepare silver nanoparticles surface-modified double-sided TiO 2 Nanotube Array Materials Methods

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