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

Preparation method of silver bromide composite silver phosphate photocatalyst

A composite phosphoric acid and catalyst technology, applied in the field of photocatalytic materials, can solve problems affecting light absorption, etc., achieve the effects of reducing solubility, improving photocatalytic performance, and short synthesis cycle

Inactive Publication Date: 2018-12-21
CHANGCHUN UNIV OF TECH
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But Ag 3 PO 4 Slightly soluble in water and Ag + It is easy to be reduced to simple silver, on the one hand causing Ag 3 PO 4 loss, on the other hand the simple substance of silver is attached to the Ag 3 PO 4 The surface affects its absorption of light

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
  • Preparation method of silver bromide composite silver phosphate photocatalyst
  • Preparation method of silver bromide composite silver phosphate photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 1.87mmol of silver nitrate, dissolve it in 40ml of deionized water, add 2.24mmol of hexamethylenetetramine under vigorous stirring, and keep stirring for 15min; add 4.2ml of sodium dihydrogen phosphate dropwise therein, and continue stirring for 15min; 3ml of 0.1 mol / L sodium bromide solution was added dropwise, stirred for 3 hours in the dark, the obtained reactant was centrifuged, washed with deionized water and ethanol for 5 times, and vacuum-dried at 60°C for 12 hours to obtain silver bromide Composite silver phosphate photocatalyst.

Embodiment 2

[0022] Weigh 4mmol of silver nitrate, dissolve it in 40ml of deionized water, add 4.8mmol of hexamethylenetetramine under vigorous stirring, and keep stirring for 15min; add 8.9ml of sodium dihydrogen phosphate dropwise therein, and continue stirring for 15min; Add 3ml of 0.1 mol / L sodium bromide solution dropwise, stir for 3 hours in the dark, centrifuge the obtained reactant, wash with deionized water and ethanol for 5 times, and dry in vacuum at 60°C for 12 hours to obtain silver bromide Composite silver phosphate photocatalyst.

Embodiment 3

[0024] Weigh 0.58mmol of silver nitrate, dissolve it in 40ml of deionized water, add 0.70mmol of hexamethylenetetramine under vigorous stirring, and keep stirring for 15min; add 1.3ml of sodium dihydrogen phosphate dropwise therein, and continue stirring for 15min; 3ml of 0.1 mol / L sodium bromide solution was added dropwise, stirred for 3 hours in the dark, the obtained reactant was centrifuged, washed with deionized water and ethanol for 5 times, and vacuum-dried at 60°C for 12 hours to obtain silver bromide Composite silver phosphate photocatalyst.

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 relates to a preparation method of a silver bromide composite silver phosphate photocatalyst, which belongs to the field of photocatalyst materials. The preparation method is characterized by comprising the following steps: adopting deionizd water as a solvent, successively adding silver nitrate, hexamine, sodium dihydrogen phosphate and sodium bromide under a severe stirring condition, finally performing centrifuging and drying to obtain the silver bromide composite silver phosphate photocatalyst. According to the method, a catalyst is formed on the surface of a carrier, and thecatalyst is tightly combined with the carrier. The preparation method is simple in preparation process, cheap and easy in obtaining raw materials, and short in preparation period; and the prepared material is stable in chemical performance. The photocatalyst prepared by the preparation method of the invention has photocatalytic activity in a wide wavelength range, can perform photocatalytic oxidation and degradation on organic pollutants under the radiation of visible light or natural light, and has good application prospect.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic materials, and in particular relates to the preparation and application of a silver bromide composite silver phosphate photocatalyst. Background technique [0002] In recent years, with the development of economy and industry and the continuous growth of population, energy crisis and environmental pollution have become the two major themes in the field of science and technology today, especially environmental pollution is becoming more and more serious, especially water pollution, which has aroused widespread concern among people. focus on. Although traditional sewage treatment can improve the environment to a certain extent, none of these methods can completely degrade or make the pollutants harmless, and easily cause secondary pollution. Photocatalytic technology is widely used in the treatment of refractory organic wastewater and comprehensive wastewater due to its advantages of high ca...

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
IPC IPC(8): B01J27/18C02F1/30C02F101/30
CPCC02F1/30B01J27/1817C02F2101/308B01J35/39
Inventor 李贞玉龙丹周俊伶时洪民王冠然李红双
Owner CHANGCHUN UNIV OF TECH