Preparation method of nitrogen-doped nano-titanium dioxide-loaded activated carbon fiber composite material

Abstract

A preparation method of a nitrogen-doped nanometer titanium dioxide loaded active carbon fiber composite material, concretely comprises the following steps: (1) preparing a mixture solution of absolute ethyl alcohol and water, adjusting the mixture solution by dilute nitric acid, so as to obtain a mixture solution A; (2) mixing tetrabutyl orthotitanate with absolute ethyl alcohol, so as to obtain a mixture solution B; (3) dropwise adding the mixture solution B into the mixture solution A, so as to obtain a mixture sol C; (4) adding an active carbon fiber into the mixture sol C, extruding the residual mixture sol C from the active carbon fiber after immersion; (5) drying the active carbon fiber containing the mixture sol C in a drying oven; and (6) placing the dry active carbon fiber into a N2 atmosphere furnace, and calcinating and crystallizing at 300-600 DEG C. The preparation method solves the problems that the visible light activity of the nano titanium dioxide is low, the titanium dioxide is easy to agglomerate in water and difficult to recover, and the active carbon fiber is easy to absorb and saturate, and repeated use effect is poor.

Description

technical field [0001] The invention belongs to the technical field of preparation methods of photocatalytic materials, and in particular relates to a preparation method of nitrogen-doped nano-titanium dioxide-loaded activated carbon fiber composite material. Background technique [0002] In 1986, Sato prepared TiO with visible light activity by reacting β-type titanium hydroxide with ammonia water and calcining at high temperature. 2 Material. In 2001, Asahi passed the N 2 Sputtering treatment of TiO in / Ar atmosphere 2 and in NH 3 / Ar atmosphere treatment of TiO 2 powder, prepared N-doped nano-TiO 2 photocatalytic material. [0003] A large number of studies have shown that through the nano-TiO 2 N-doping of non-metallic elements can effectively reduce nano-TiO 2 The energy band width makes its spectral response range redshift to the visible light region, and nitrogen-doped nano-titanium dioxide has a good photocatalytic effect; however, nitrogen-doped nano-titaniu...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of nitrogen-doped nano-titanium dioxide-loaded activated carbon fiber composite material to solve the problem of low visible light activity of nano-titanium dioxide, easy agglomeration in water, difficult recycling, and activated carbon fiber is easy to absorb and saturate and has poor reusability. question

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