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A kind of preparation method of environmental photocatalytic nano material

A technology of nanomaterials and ambient light, applied in the field of environmental photocatalysis, can solve the problem of long length of titanate nanotubes

Inactive Publication Date: 2016-04-06
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But these doped titanate nanotubes belong to single element doping, and the obtained titanate nanotubes are very long

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Step (1). Sol-gel method prepares bismuth-doped titania nanoparticles:

[0024] 1-1. Add 10mL butyl titanate to 20mL absolute ethanol, stir well to form 30mL butyl titanate alcohol solution;

[0025] 1-2. Add 0.03mM bismuth nitrate to 5mL polyethylene glycol-200, dissolve to form a bismuth nitrate solution;

[0026] 1-3. Stir 1mL nitric acid, 2mL deionized water, and 20mL absolute ethanol evenly to form 23mL acidic solution;

[0027] 1-4. Stir and mix the bismuth nitrate solution obtained in step 1-2 with the butyl titanate alcohol solution obtained in step 1-1, then add the acidic solution dropwise, stir at room temperature for 2 hours to form a gel, and then age 20 hours; dry the aged gel in a vacuum oven to remove ethanol and moisture, wash with alcohol, wash with water, dry, and pulverize, and then calcinate in a muffle furnace at 500°C for 6 hours to obtain bismuth-doped titanium dioxide nanoparticles particles;

[0028] Step (2). Prepare sulfur, tungsten, bismu...

Embodiment 2

[0033] Step (1). Sol-gel method prepares bismuth-doped titania nanoparticles:

[0034] 1-1. Add 10mL of isopropyl titanate to 30mL of absolute ethanol, and stir evenly to form 40mL of isopropyl titanate alcohol solution;

[0035] 1-2. Add 0.3mM bismuth chloride to 10mL polyethylene glycol-200, and dissolve to form a bismuth chloride solution;

[0036] 1-3. Stir 2mL of nitric acid, 4mL of deionized water and 20mL of absolute ethanol evenly to form 26mL of acidic solution;

[0037] 1-4. Stir and mix the bismuth chloride solution obtained in step 1-2 with the isopropyl titanate alcohol solution obtained in step 1-1, then add the acidic solution dropwise, and stir at room temperature for 5 hours to form a gel, then Aging for another 40 hours; drying the aged gel in a vacuum drying oven to remove ethanol and moisture, washing with alcohol, washing with water, drying, and pulverizing, and calcining in a muffle furnace at 600°C for 4 hours to obtain bismuth-doped Titanium dioxide n...

Embodiment 3

[0043] Step (1). Sol-gel method prepares bismuth-doped titania nanoparticles:

[0044] 1-1. Add 10mL of ethyl titanate to 25mL of absolute ethanol, and stir evenly to form an ethyl titanate alcohol solution;

[0045] 1-2. Add 0.1mM bismuth acetate to 8mL polyethylene glycol-200, dissolve to form a bismuth acetate solution;

[0046] 1-3. Stir 1.5mL nitric acid, 3mL deionized water and 20mL absolute ethanol to form 24.5mL acidic solution;

[0047] 1-4. Stir and mix the bismuth acetate solution obtained in step 1-2 with the ethyl titanate alcohol solution obtained in step 1-1, then add the acidic solution dropwise, stir at room temperature for 4 hours to form a gel, and then age Dry the aged gel in a vacuum drying oven to remove ethanol and moisture, wash with alcohol, wash with water, dry, and pulverize, and then calcinate in a muffle furnace at 550°C for 5 hours to obtain bismuth-doped titanium dioxide nanoparticles particles;

[0048] Step (2). Prepare sulfur, tungsten, bis...

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Abstract

The invention discloses a preparation method of environmental photocatalytic nanomaterials. This method uses a sol-gel method to prepare bismuth-doped titanium dioxide nanoparticles, then uses a hydrothermal method to prepare titanate nanotubes co-doped with sulfur, tungsten, and bismuth elements, and finally cuts off the sulfur, tungsten, and bismuth elements by the synergistic combined effect of ultrasonic and microwave. Co-doped titanate nanotubes. The method of the present invention uses the synergistic combined effect of ultrasonic and microwave to cut titanate nanotubes co-doped with sulfur, tungsten and bismuth elements. The obtained short titanate nanotubes co-doped with sulfur, tungsten and bismuth elements are uniform in length, and the shortest length can reach 20nm. .

Description

technical field [0001] The invention belongs to the technical field of environmental photocatalysis, and relates to a method for preparing an environmental photocatalytic nano material, in particular to a method for preparing a titanic acid short tube co-doped with sulfur, tungsten and bismuth elements. Background technique [0002] Titanate nanotubes with large specific surface area, hollow pores and layered structure are important inorganic functional semiconductor nanomaterials, which have good photoelectric, photosensitive, gas sensitive and pressure sensitive properties, and are widely used as environmental Sewage photocatalytic degradation treatment, various sensors, solar cells, biological implant materials, etc. The surface of titanate nanotubes is usually negatively charged, which also makes titanate nanotubes a good substrate or carrier for immobilizing catalyst particles. A simple method for preparing titanate nanotubes is to carry out hydrothermal reaction of ti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/02B01J35/02B01J35/00
Inventor 聂秋林
Owner HANGZHOU DIANZI UNIV
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