Preparation method of one-dimensional nanometer titanium dioxide photocathode protection composite material with electric conducting mica as carrier

A technology of nano-titanium dioxide and photocathode protection, applied in nanotechnology, metal material coating technology, liquid chemical plating, etc., can solve the problems of inability to conduct electrons quickly and effectively, mica is not a good conductor of electrons, etc., and achieve excellent electron migration efficiency, preventing stacking and stacking, and improving utilization

Active Publication Date: 2018-08-03
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The titanium oxide in the existing mica/titanium oxide composite material is generally in the form of particles, which cannot conduct electrons quickly and effecti

Method used

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  • Preparation method of one-dimensional nanometer titanium dioxide photocathode protection composite material with electric conducting mica as carrier
  • Preparation method of one-dimensional nanometer titanium dioxide photocathode protection composite material with electric conducting mica as carrier
  • Preparation method of one-dimensional nanometer titanium dioxide photocathode protection composite material with electric conducting mica as carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) Add 30mL of titanium tetrachloride with a concentration of 3mol / L to 50mL of deionized water and stir for 0.5h to obtain a transparent solution under the condition of -5~0℃ ice bath, and disperse 7g of conductive mica powder in the In the above solution, stir and react at 70°C for 0.5h; filter and wash with deionized water until the filtrate pH=5-6, dry the filter cake at 60°C for 4h, then place it in a muffle furnace at 400°C Calcined under the conditions for 2h;

[0027] 2) Take 2.5g of the composite powder obtained in step 1) and disperse it in 50mL of water, raise the temperature of the system to 85°C; add 0.2g of sodium stearate anionic surfactant while stirring, stir for 1 hour, cool naturally to room temperature, pump Filter, wash, and dry in an oven at 60°C for 4 hours;

[0028] 3) Take 0.1 g of the modified powder obtained in step 2), add it to a mixed solution of 1 mL of 3mol / L titanium tetrachloride, 30 mL of 36 wt% hydrochloric acid and 30 mL of deionize...

Embodiment 2

[0030] 1) Add 20mL of titanium tetrachloride with a concentration of 4mol / L to 60mL of deionized water and stir for 1 hour under the condition of -5~0℃ ice bath to obtain a transparent solution. Disperse 9.6g of conductive mica powder in the In the above solution, stir and react at 50°C for 2h; filter and wash with deionized water until the filtrate pH=5~6, dry the filter cake at 40°C for 8h, then place it in a muffle furnace at 550°C Calcining at lower temperature for 1h;

[0031] 2) Take 7g of the composite powder obtained in step 1) and disperse it in 70mL of water, raise the temperature of the system to 90°C; add 0.45g of sodium laurate anionic surfactant while stirring, stir for 0.5h, cool naturally to room temperature, and filter with suction , washing, and drying in an oven at 40°C for 8 hours;

[0032] 3) Take 0.2g of the modified powder obtained in step 2), add it to 1mL 4mol / L titanium tetrachloride, 30mL 36wt% hydrochloric acid and 30mL deionized water mixed soluti...

Embodiment 3

[0034] 1) Add 10 mL of titanium tetrachloride with a concentration of 5 mol / L to 70 mL of deionized water and stir for 45 minutes under ice bath conditions at -5 to 0 ° C to obtain a transparent solution, and disperse 11 g of conductive mica powder in the above-mentioned solution, stirred and reacted at 60°C for 1.5h; filtered and washed with deionized water until the pH of the filtrate = 5-6, dried the filter cake at 50°C for 6h, placed in a muffle furnace at 500°C Calcining at lower temperature for 1.5h;

[0035]2) Disperse 7 g of the composite powder obtained in step 1) in 90 mL of water, raise the temperature of the system to 90 ° C; add 0.52 g of sodium laurate anionic surfactant while stirring, stir for 1 hour, cool naturally to room temperature, and filter with suction. Wash and dry in an oven at 50°C for 6 hours;

[0036] 3) Take 0.2g of the modified powder obtained in step 2), add it to 1mL of 5mol / L titanium tetrachloride, 30mL of 36wt% hydrochloric acid and 30mL of...

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Abstract

The invention discloses a preparation method of a one-dimensional nanometer titanium dioxide photocathode protection composite material with an electric conducting mica as a carrier. Under ice bath conditions, titanium salt solution is added in de-ionized water for stirring to obtain transparent solution; under the ice bath, electric conducting mica powder is dispersed in the solution for reaction, and is dried and calcined to obtain composite powder; the composite powder is dispersed in the de-ionized water; under heating stirring conditions, anionic surfactant is added for stirring, is cooled to the room temperature, and is filtered, washed and dried to obtain modified powder; and the obtained modified powder is added in titanium salt and hydrochloric acid mixed solution for hydrothermalreaction, is cooled to the room temperature, and is filtered, washed and dried to obtain the one-dimensional nanometer titanium dioxide photocathode protection composite material with the electric conducting mica as the carrier.

Description

technical field [0001] The invention relates to a photocathode protection material and a preparation method thereof, in particular to a preparation method of a one-dimensional nano titanium dioxide photocathode protection composite material with conductive mica as a carrier. Background technique [0002] TiO 2 It is a relatively commonly used photoelectric material with good photocatalysis and photosensitization effects. It has become a promising material and is widely used in wastewater treatment, air purification, solar cells and other fields. More importantly, using TiO 2 Cathodic protection of metals by photogenerated electrons in semiconductors, a green and environmentally friendly metal corrosion protection method, has aroused great interest. TiO 2 The principle used for photocathode protection is: under light conditions, TiO 2 Photons with suitable energy are absorbed to generate photo-generated electron-hole pairs, and then the photo-generated electrons are trans...

Claims

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Application Information

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IPC IPC(8): C23F13/12C23C18/12B82Y40/00
CPCB82Y40/00C23C18/1216C23C18/1245C23F13/12
Inventor 姚超刘展左士祥刘文杰李霞章李忠玉魏科年
Owner CHANGZHOU UNIV
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