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Homogeneous crystallized TiO2 nano-scale solution, preparation method thereof and crystallization equipment

A nano-solution and crystallization technology, applied in titanium oxide/hydroxide, nanotechnology, nanotechnology and other directions, can solve the problems affecting the photocatalytic performance and optical properties of catalyst coatings, achieve good ion doping, expand light Response range, simple effect of preparation method

Active Publication Date: 2016-10-12
SUZHOU SHENGFENGYUAN NEW MATERIAL TECH CO LTD
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Problems solved by technology

CN201821944 A discloses the use of silane coupling agent to form TiO on acrylic plate 2 Photocatalytic coating, but usually the use of coupling agent will affect the photocatalytic performance and optical properties of the catalyst coating

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  • Homogeneous crystallized TiO2 nano-scale solution, preparation method thereof and crystallization equipment
  • Homogeneous crystallized TiO2 nano-scale solution, preparation method thereof and crystallization equipment
  • Homogeneous crystallized TiO2 nano-scale solution, preparation method thereof and crystallization equipment

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preparation example Construction

[0030] Anatase TiO of the present invention 2 The preparation method of the nanometer solution is to use titanate as the titanium source and hydrolyze it under acidic conditions to form a homogeneous TiO 2 sol precursor solution, and then TiO 2 The sol precursor solution is placed in a container, and the TiO 2 The sol precursor was irradiated. Under the irradiation of ultrafast laser, it can be in picosecond (10 -12 seconds) to femtoseconds (10 -15Seconds) to transfer a large amount of energy to specific nanoparticles to crystallize them. Since this time exceeds the time of heat conduction (nanoseconds to microseconds), the particles can be crystallized at room temperature (25±5°C), while effectively avoiding the agglomeration of nanoparticles at high temperatures.

[0031] The titanium source used in the present invention is selected from tetraethyl titanate: Ti(OC 2 h 5 ) 4 , Isopropyl titanate: Ti(OC 3 h 7 ) 4 , Tetrabutyl titanate: Ti(OC 4 h 9 ) 4 any one or ...

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Abstract

The invention relates to a high-stability TiO2 nano-scale solution and a preparation method thereof, and further relates to special crystallization equipment for the preparation method. The preparation method comprises steps as follows: titanate is taken as a titanium source and hydrolyzed under the acidic condition, a TiO2 sol precursor solution is formed, and the TiO2 sol precursor solution is irradiated with ultrafast laser under the condition that the TiO2 sol precursor solution keeps a flowing state. The preparation method can realize crystallization of particles in the solution at the room temperature, and has the advantages of being simple, low in preparation cost and high in crystallization efficiency; besides, with the adoption of the preparation method, the homogeneous crystallized TiO2 nano-scale solution with the particle size of 5-20 nm can be obtained, and have a good photocatalytic effect; meanwhile, by means of the preparation method, ion doping can be performed better, particle aggregation caused by heating in a doping process is avoided, and accordingly, the photoresponse range of the catalyst is extended into a visible light region.

Description

technical field [0001] The invention relates to the technical field of chemical coating, in particular to a TiO 2 Nano solution and its preparation method, and a crystallization device of nano solution. Background technique [0002] Titanium dioxide (TiO 2 ) as a cheap, stable and efficient photocatalyst material has been widely recognized at home and abroad. The bandgap width (Eg) of titanium dioxide is about 3.2eV, which can effectively absorb the ultraviolet energy in sunlight to generate electrons and holes. The electrons and holes will further interact with the surface-adsorbed water and O 2 function to generate free radicals with strong oxidizing properties, thereby degrading the surrounding pollutants. Many studies have shown that titanium dioxide nanoparticles have superior degradation performance on air pollutants (NOx, VOCs, organic pollutants in water, etc. In addition, titanium dioxide nano-coatings can also play a bactericidal role. [0003] Nanoparticles o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053B82Y30/00
CPCB82Y30/00C01G23/053C01P2002/72C01P2002/84C01P2004/04C01P2004/64
Inventor 陆诚刘凌峰
Owner SUZHOU SHENGFENGYUAN NEW MATERIAL TECH CO LTD
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