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Preparation method of electrochromic glass adopting WO3-TiO2 core-shell structure

A technology of electrochromic glass and core-shell structure, which is applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of high resistance and low cycle performance of electrochromic glass materials, and achieve environmental protection, Increased ion storage capacity and low overall cost

Inactive Publication Date: 2015-05-13
TIANJIN CHENGJIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] After a lot of research, it was found that pure WO 3 Electrochromic glass also has weaknesses such as high material resistance and low cycle performance

Method used

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  • Preparation method of electrochromic glass adopting WO3-TiO2 core-shell structure
  • Preparation method of electrochromic glass adopting WO3-TiO2 core-shell structure
  • Preparation method of electrochromic glass adopting WO3-TiO2 core-shell structure

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Embodiment 1

[0027] First, 1.65 g of CTAB was dissolved in 40 ml of H 2 O, mix 12ml ethylene glycol, 20ml saturated NaCl solution and 150ml HCl, and then add CTAB aqueous solution; add 4ml butyl titanate dropwise to the mixed solution while stirring; then add 74ml HCl dropwise 2 O to make TiO 2 Precursor solution; put the FTO glass cleaned with acetone, isopropanol and ethanol into TiO 2 The precursor solution was reacted at 150°C for 7 hours in the reactor to prepare TiO 2 nanorod films. Then, press H 2 o 2 The ratio of H to tungsten powder is 1ml:1g 2 o 2 Slowly drop it into the flask with tungsten powder, and at the same time immerse the flask in cold water, keep the water temperature at 0°C, and stir for 6 hours. Speed ​​centrifugation for 10min to obtain pale yellow clear WO 3 solution, let the solution stand for 5d, and then dry it at 80°C until the solution changes from light yellow to orange, and add ethanol to obtain WO 3 Sol. Finally, the TiO 2 The nanorod film was dep...

Embodiment 2

[0030] First, 1.7 g of CTAB was dissolved in 40 ml of H 2 O, and 12ml of ethylene glycol, 20ml of saturated NaCl solution and 150ml of HCl were mixed, and then the CTAB aqueous solution was added to it; while stirring, 5ml of butyl titanate was added dropwise to the mixed solution; after that, 74ml of HCl was added dropwise 2 O to make TiO 2 Precursor solution; put the FTO glass cleaned with acetone, isopropanol and ethanol into TiO 2 The precursor solution was reacted at 150°C for 7 hours in the reactor to prepare TiO 2 nanorod films. Then, press H 2 o 2 The ratio of H to tungsten powder is 1ml:1g 2 o 2 Slowly drop it into the flask with tungsten powder, and at the same time immerse the flask in cold water, keep the water temperature at 10°C, and stir for 6 hours. Speed ​​centrifugation for 5min, to obtain light yellow clear WO 3 solution, let the solution stand for 3d, and then dry it at 75°C until the solution turns from light yellow to orange, and add ethanol to ob...

Embodiment 3

[0033] First, 1.7 g of CTAB was dissolved in 40 ml of H 2 O, mix 12ml ethylene glycol, 20ml saturated NaCl solution and 150ml HCl, and then add CTAB aqueous solution; add 4ml butyl titanate dropwise to the mixed solution while stirring; then add 74ml HCl dropwise 2 O to make TiO 2 Precursor solution; put the FTO glass cleaned with acetone, isopropanol and ethanol into TiO 2 The precursor solution was reacted at 150°C for 6 hours in the reactor to prepare TiO 2 nanorod films. Then, press H 2 o 2 The ratio of H to tungsten powder is 1ml:1g 2 o 2 Slowly drop it into the flask with tungsten powder, and at the same time immerse the flask in cold water, keep the water temperature at 5°C, and stir for 5 hours. centrifuged at a high speed for 8 minutes to obtain pale yellow clear WO 3 solution, let the solution stand for 4d, and then dry it at 70°C until the solution changes from light yellow to orange, and add ethanol to obtain WO 3 Sol. Finally, the TiO 2 The nanorod film...

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Abstract

The invention discloses a preparation method of electrochromic glass adopting a WO3-TiO2 core-shell structure. The preparation method comprises the following steps: firstly, adopting a hydrothermal method to prepare a TiO2 nanorod thin film; then, adopting a dipping pulling technology to soak the TiO2 nanorod thin film into WO3 colloidal sol; conducting heat treatment after drying to obtain the electrochromic glass adopting the WO3-TiO2 core-shell structure. According to the invention, the coefficient of diffusion of the WO3-TiO2 electrochromic glass can reach 1.1-1.2*10-10 cm<2> / s; the coefficient of diffusion of pure WO3 electrochromic glass is 2.3*10-11 cm<2> / s; compared with the pure WO3 electrochromic glass, the ion storage volume and circulating service life of the WO3-TiO2 electrochromic glass are remarkably improved; the method has the characteristics that the method is favorable for environmental protection, does not generate secondary harm, greatly reduces the use amount of the WO3, and is low in comprehensive cost.

Description

technical field [0001] The invention belongs to the technical field of material preparation, specifically WO 3 -TiO 2 Electrochromic glass with core-shell structure and preparation method thereof. Background technique [0002] With the development of economy, the problem of greenhouse effect and global warming has intensified, making people pay more and more attention to the protection of the environment. The two most important tools in life today are buildings and cars, both of which are closed systems, so transparent glass windows must be used to increase the brightness of the interior, which will easily cause the accumulation of indoor heat in summer and cause the indoor temperature to rise , thus increasing the use of air conditioners, leading to a series of environmental problems. [0003] To solve this problem, electrochromic window structures were proposed as early as the 1980s. Electrochromism means that under the action of alternating high and low or positive an...

Claims

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Application Information

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IPC IPC(8): C03B19/00
Inventor 刘志锋李雅君
Owner TIANJIN CHENGJIAN UNIV
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