A kind of preparation method of multi-element doped titanic acid nano short tube

A technology of titanate nanotubes and short nanotubes, which is applied in nanotechnology, nanotechnology, chemical instruments and methods, and can solve the problems of long length of titanate nanotubes

Inactive Publication Date: 2015-10-07
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

[0022] Step (1). Sol-gel method prepares bismuth-doped titania nanoparticles:

[0023] 1-1. Add 10 mL of butyl titanate to 20 mL of absolute ethanol, and stir evenly to form 30 mL of butyl titanate alcohol solution;

[0024] 1-2. Add 0.03mM bismuth nitrate to 5mL polyethylene glycol-200, dissolve to form a bismuth nitrate solution;

[0025] 1-3. Stir 1mL nitric acid, 2mL deionized water, and 20 mL absolute ethanol to form 23 mL acidic solution;

[0026] 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 dropwise the acidic solution obtained in step 1-3, and stir for 2 hours at room temperature to form Gel, and then aged for 20 hours; the aged gel was dried in a vacuum drying oven to remove ethanol and moisture, washed with alcohol, washed with water, dried and crushed, and then calcined in a muffle furnace at 500°C for 6 hours. Obtain bismuth-doped titanium dioxide nanoparticles;

[002...

Embodiment 2

[0032] Step (1). Sol-gel method prepares bismuth-doped titania nanoparticles:

[0033] 1-1. Add 10 mL of isopropyl titanate to 30 mL of absolute ethanol, and stir evenly to form 40 mL of isopropyl titanate alcohol solution;

[0034] 1-2. Add 0.3mM bismuth chloride to 10 mL polyethylene glycol-200, and dissolve to form a bismuth chloride solution;

[0035] 1-3. Stir 2 mL of nitric acid, 4 mL of deionized water, and 20 mL of absolute ethanol to form a 26 mL acidic solution;

[0036] 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 dropwise the acidic solution obtained in step 1-3, and stir for 5 hours at room temperature , form a gel, and then age for 40 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 calcined in a muffle furnace at 600 ° C for 4 hours, bismuth-doped titania nanoparticles were ...

Embodiment 3

[0042] Step (1). Sol-gel method prepares bismuth-doped titania nanoparticles:

[0043] 1-1. Add 10 mL of ethyl titanate to 25 mL of absolute ethanol, and stir evenly to form an ethyl titanate alcohol solution;

[0044] 1-2. Add 0.1mM bismuth acetate to 8mL polyethylene glycol-200 and dissolve to form a bismuth acetate solution; the molar volume ratio of bismuth salt to titanate in step 1-1 is 0.03-0.3:10, unit is mM / mL,

[0045] 1-3. Stir 1.5mL nitric acid, 3mL deionized water, and 20 mL absolute ethanol to form 24.5 mL acidic solution;

[0046] 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 dropwise the acidic solution obtained in step 1-3, and stir for 4 hours at room temperature to form Gel, and then aged for 30 hours; the aged gel was dried in a vacuum drying oven to remove ethanol and water, washed with alcohol, washed with water, dried and crushed, and then calcined in a muffle...

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Abstract

The invention discloses a multi-element-doped titanic acid nano short tube preparation method. According to the preparation method, the sol-gel method is utilized to prepare bismuth-doped titanium dioxide nano-particles; then, the hydrothermal method is adopted to prepare a boron-cobalt-bismuth-doped titanic acid nanotube; finally, the ultrasonic wave and microwave synergetic and composite effect is adopted to cut off the boron-cobalt-bismuth-doped titanic acid nanotube. According to the invention, the ultrasonic wave and microwave synergetic and composite effect is adopted to cut off the boron-cobalt-bismuth-doped titanic acid nanotube so as to obtain the boron-cobalt-bismuth-doped titanic acid nano short tube with uniform lengths, and the minimum length of the boron-cobalt-bismuth-doped titanic acid nano short tube can reach 20 nm.

Description

technical field [0001] The invention belongs to the technical field of semiconductor materials, and relates to a preparation method of multi-element-doped titanic acid nano short tubes, in particular to a preparation method of boron, cobalt and bismuth elements co-doped titanic acid short nano tubes. 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 t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/00B82Y30/00B82Y40/00
Inventor 袁求理
Owner HANGZHOU DIANZI UNIV
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