Unlock instant, AI-driven research and patent intelligence for your innovation.

a bi 2 o 2 sio 3 /bi 2 o 3 /biobr Preparation method of heterogeneous composite optical material

A composite light and heterogeneous technology, applied in catalyst activation/preparation, chemical instruments and methods, water/sludge/sewage treatment, etc. Performance, mild reaction conditions, low cost effect

Active Publication Date: 2021-11-16
SHAANXI UNIV OF SCI & TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the single bismuth-based oxide semiconductors have too wide or too narrow bandgap, which makes their response wavelength range insufficient

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • a bi <sub>2</sub> o <sub>2</sub> sio <sub>3</sub> /bi <sub>2</sub> o <sub>3</sub> /biobr Preparation method of heterogeneous composite optical material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A Bi 2 o 2 SiO 3 / Bi 2 o 3 The preparation method of / BiOBr heterogeneous composite material, comprises the steps:

[0027] (1) Mix absolute ethanol and deionized water into a beaker at a certain volume ratio, stir on a magnetic stirrer at a slow speed for 5 min to 10 min, weigh citric acid into the beaker and stir until completely dissolved; The volume ratio of water to alcohol is 1:1, and the concentration of citric acid is 0.5 mol / L;

[0028] (2) Weigh a certain amount of bismuth nitrate into the beaker, increase the speed, and stir the powder deposited on the bottom of the beaker with a glass rod every about 10 minutes, seal it with plastic wrap and stir until it is completely dissolved; the bismuth nitrate The concentration is 0.2 mol / L

[0029] (3) Add a certain amount of tetraethyl orthosilicate, polyethylene glycol, and sodium lauryl sulfate in sequence as a dispersant, and stir until completely dissolved to obtain a precursor solution; the concentration of...

Embodiment 2

[0035] A Bi 2 o 2 SiO 3 / Bi 2 o 3 / BiOBr heterogeneous composite optical material preparation method, comprises the steps:

[0036](1) Mix absolute ethanol and deionized water into a beaker at a certain volume ratio, stir on a magnetic stirrer at a slow speed for 5 min to 10 min, weigh citric acid into the beaker and stir until completely dissolved; The volume ratio of water to alcohol is 1:1.1, and the concentration of citric acid is 0.4 mol / L;

[0037] (2) Weigh a certain amount of bismuth nitrate into the beaker, increase the speed, and stir the powder deposited on the bottom of the beaker with a glass rod every about 10 minutes, seal it with plastic wrap and stir until it is completely dissolved; the bismuth nitrate The concentration is 0.6 mol / L

[0038] (3) Add a certain amount of tetraethyl orthosilicate, polyethylene glycol, and sodium orthophosphate in turn as a dispersant, and stir until completely dissolved to obtain a precursor solution; the concentration of ...

Embodiment 3

[0045] A Bi 2 o 2 SiO 3 / Bi 2 o 3 / BiOBr heterogeneous composite optical material preparation method, comprises the steps:

[0046] (1) Mix absolute ethanol and deionized water into a beaker at a certain volume ratio, stir on a magnetic stirrer at a slow speed for 5 min to 10 min, weigh citric acid into the beaker and stir until completely dissolved; The volume ratio of water to alcohol is 1:1.2, and the concentration of citric acid is 0.3 mol / L;

[0047] (2) Weigh a certain amount of bismuth nitrate into the beaker, increase the speed, and stir the powder deposited on the bottom of the beaker with a glass rod every about 10 minutes, seal it with plastic wrap and stir until it is completely dissolved; the bismuth nitrate The concentration is 0.8 mol / L;

[0048] (3) Add a certain amount of tetraethyl orthosilicate and sodium lauryl sulfate in sequence as dispersants, and stir until they are completely dissolved to obtain a precursor solution; the concentration of tetraeth...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a Bi 2 o 2 SiO 3 / Bi 2 o 3 / BiOBr heterogeneous composite material preparation method. Using bismuth nitrate as the bismuth source, ethyl orthosilicate as the silicon source, and adding sodium orthophosphate, sodium lauryl sulfate, polyethylene glycol, etc. to promote the formation of the required crystal phase, a Bi 2 o 2 SiO 3 / Bi 2 o 3 / BiOBr heterocomposites. The method has simple process equipment, short period and low cost, and the obtained composite material powder has high photocatalytic performance.

Description

technical field [0001] The invention belongs to the technical field of photocatalysts, in particular to a Bi 2 o 2 SiO 3 / Bi 2 o 3 / BiOBr heterogeneous composite optical material preparation method. Background technique [0002] Bismuth silicate (BSO), as an important functional material, has special acousto-optic, photoelectric, piezoelectric, electrical conductivity and ferroelectric properties. Bi 2 o 2 SiO 3 Is a layered structure of Oliviers phase compound, by [Bi 2 o 2 ] 2+ layer with SiO 3 2- Layers grow alternately along the c-axis direction to form a layered structure, and its anion oxyacid SiO 3 2- It shows good structural stability and crystallization properties, so Bi 2 o 2 SiO 3 It has good chemical stability, and it has good photoresponse to visible light. Most single bismuth-based oxide semiconductors have too wide or too narrow a bandgap, which makes their response wavelength range insufficient. If two or more semiconductors with matching c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/04B01J37/03B01J37/10B01J37/34C02F1/30C02F101/30C02F101/34C02F101/38
CPCB01J27/04B01J35/004B01J37/036B01J37/10B01J37/343C02F2101/308C02F2101/34C02F2101/38C02F2305/10
Inventor 伍媛婷韩琳曾柏林张新孟李旭
Owner SHAANXI UNIV OF SCI & TECH