TiO2 nanoparticle film and preparation method thereof

A nanoparticle and thin film technology, applied in the field of photocatalysis, can solve the problems of easy cracking and poor substrate adhesion, and achieve the effect of simple and controllable preparation process.

Active Publication Date: 2019-04-09
TIANJIN CHENGJIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the TiO prepared by the powder particles on the substrate 2 Granular film, which has the disadvantages of easy cracking and poor adhesion to the substrate

Method used

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  • TiO2 nanoparticle film and preparation method thereof
  • TiO2 nanoparticle film and preparation method thereof
  • TiO2 nanoparticle film and preparation method thereof

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preparation example Construction

[0055] A kind of TiO 2 A method for preparing a nanoparticle film, comprising the steps of:

[0056] Step 1: Put 20×20mm 2 Titanium foils of large and small areas were successively put into 99.7wt% ethanol and deionized water for ultrasonic cleaning for 15 minutes respectively. foil;

[0057] or,

[0058] 20×20mm 2 Ti foils of large and small areas were ultrasonically cleaned in 99.7wt% ethanol and deionized water for 15 minutes, and then put in 40wt% HF, 65-68wt% HNO 3 and H 2 Mixed acid solution of O (the volume ratio is HF:HNO 3 :H 2 O=1:1:2) Immerse for 15s to remove the oxide layer on the surface of the titanium foil to obtain a new titanium surface. After taking it out, rinse it repeatedly with deionized water, and then put the titanium foil into deionized water for ultrasonic cleaning for 10-15min. Thoroughly remove the mixed acid solution to obtain a cleaned titanium foil;

[0059] Step 2: Put the cleaned titanium foil in Step 1 into an oven and dry it at 60-8...

Embodiment 1

[0065] 20×20mm 2 Titanium foils of large and small areas were put into 99.7wt% ethanol and deionized water for ultrasonic cleaning for 15 minutes respectively; then put into 40wt% HF, 68wt% HNO 3 and H 2 Mixed acid solution of O (the volume ratio is HF:HNO 3 :H 2 O=1:1:2) soak for 15s, take it out and rinse it with deionized water, put the titanium foil in deionized water and ultrasonically clean it for 15min to get the cleaned titanium foil; put the cleaned titanium foil into the oven After drying at 70°C for 2 hours, put it into an 80mL reaction kettle; add 5.844g NaCl into deionized water, stir until completely dissolved, and prepare a 50mL NaCl solution with a concentration of 2mol / L; add 10mL of 30wt% H 2 o 2 Add it to the above NaCl solution, stir until it is completely dissolved, and mix the solution evenly to obtain a mixed solution; transfer the mixed solution to an 80mL reaction kettle, and perform a hydrothermal reaction at 160°C for 6h; after the reaction kettl...

Embodiment 2

[0068] 20×20mm 2 Titanium foils of large and small areas were ultrasonically cleaned in 99.7wt% ethanol and deionized water for 15 minutes respectively; then put in 40wt% HF, 65wt% HNO 3 and H 2 Mixed acid solution of O (the volume ratio is HF:HNO 3 :H 2 O=1:1:2) soak for 15s, take it out and rinse it with deionized water, put the titanium foil in deionized water and ultrasonically clean it for 15min to get the cleaned titanium foil; put the cleaned titanium foil into the oven After drying at 75°C for 2 hours, put it into an 80mL reaction kettle; add 5.844g NaCl into deionized water, stir until completely dissolved, and prepare a 50mL NaCl solution with a concentration of 2mol / L; add 10mL of 30wt% H 2 o 2 Add it into the above NaCl solution, stir until it is completely dissolved, and mix the solution evenly to obtain a mixed solution; transfer the mixed solution to an 80mL reaction kettle, and perform a hydrothermal reaction at 160°C for 8h; after the reaction kettle is co...

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Abstract

The invention provides a TiO2 nanoparticle film and a preparation method thereof. The preparation method comprises the following steps: placing chemically-polished metal titanium foil (20*20 mm<2>) into a 80 mL reaction kettle; adding a morphological control agent into deionized water, carrying out stirring until completely dissolving the morphological control agent, then, adding hydrogen peroxide(H2O2), and carrying out stirring until completely dissolving hydrogen peroxide to obtain a mixed solution; transferring the mixed solution into a reaction kettle, and carrying out a hydrothermal reaction at 140-180 DEG C for 4-10 h; cooling the reaction kettle to the room temperature, then, taking out titanium foil, washing the surface of titanium foil by using deionized water, and then, placingtitanium foil into a drying oven for drying; and placing dried titanium foil into a muffle furnace, and carrying out thermal treatment at 400-500 DEG C for 2-4 h to obtain the TiO2 nanoparticle film.The surface of the TiO2 nanoparticle film prepared by using the preparation method is composed of nanoparticles shaped like rice grain, and a preparation process is simple and easy to control.

Description

technical field [0001] The present invention is a TiO 2 The invention relates to a nano particle film and a preparation method thereof, which belong to the technical field of photocatalysis. Background technique [0002] TiO 2 Thin-film photocatalytic treatment of pollutants avoids the problems of easy deactivation and difficult recovery of powders, and has become a research hotspot. Due to the TiO prepared by the powder particles on the substrate 2 Granular film has the disadvantages of easy cracking and poor adhesion to the substrate. Therefore, the titanium substrate is used as the titanium source to directly grow nanostructured TiO on its surface. 2 , with nano-TiO 2 The bonding strength with the substrate is good, and the generated TiO 2 It can be directly used as an electrode, and the titanium substrate has the advantages of good conductivity and ductility. [0003] Nanoparticle films have a high specific surface area, good stability and easy recycling and reuse...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06B01J35/02B01J35/06C01G23/053C01G23/08
CPCC01G23/053C01G23/08B01J21/063B01J35/004B01J35/023B01J35/065
Inventor 鄂磊赖柳媛赵丹胡康慨陈雨
Owner TIANJIN CHENGJIAN UNIV
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