Preparation method of silver phosphate photocatalyst

A catalyst and phosphoric acid technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of low quantum efficiency and low utilization efficiency of TiO2, achieve low cost, simple preparation method, optical The effect of high catalytic activity

Inactive Publication Date: 2013-09-04
NANJING UNIV OF INFORMATION SCI & TECH
View PDF4 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solar light absorption range of TiO2 is limited to the ultraviolet region, and this part of light only accounts for 5% of the solar spe

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 phosphate photocatalyst
  • Preparation method of silver phosphate photocatalyst
  • Preparation method of silver phosphate photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Take 40ml of polyethylene glycol 200, pour it into a beaker, add 0.002mol of silver acetate and 41μl of phosphoric acid aqueous solution (the phosphoric acid content is 0.0006mol) with a mass percent concentration of 85% under stirring conditions, and use urotropine Adjust the pH of the solution to 5, and react for ten minutes under stirring. After the reaction, the precipitate was collected by centrifugation, washed with absolute ethanol and distilled water in sequence, and dried at 60° C. for 8 hours to obtain photocatalyst 1 .

[0023] from image 3 It can be seen that photocatalyst 1 is a pure phase of silver phosphate. from figure 1 and figure 2 It can be seen that the photocatalyst 1 is a hollow tubular microporous structure assembled by a large number of small nanoparticles.

Embodiment 2

[0025] Take 40ml of polyethylene glycol 200, pour it into a beaker, add 0.002mol of silver acetate and 89μl of phosphoric acid aqueous solution with a concentration of 85% by mass (phosphoric acid content is 0.0013mol) under stirring conditions, and use urotropine Adjust the pH of the solution to 5.5, and react for ten minutes under stirring. After the reaction, the precipitate was collected by centrifugation, washed with absolute ethanol and distilled water in sequence, and dried at 70° C. for 7 hours to obtain photocatalyst 2 .

[0026] It can be seen from the X-ray electron diffraction image of the photocatalyst 2 that the photocatalyst 2 is a pure phase of silver phosphate. From the electron microscope topography of photocatalyst 2, it can be seen that photocatalyst 2 is a hollow tubular microporous structure assembled by a large number of nanometer particles.

Embodiment 3

[0028] Take 40ml of polyethylene glycol 200, pour it into a beaker, add 0.002mol of silver acetate and 68μl of phosphoric acid aqueous solution with a mass percentage concentration of 85% (phosphoric acid content is 0.001mol) under stirring conditions, and use urotropine Adjust the pH of the solution to 6, and react for ten minutes under stirring. After the reaction, the precipitate was collected by centrifugation, washed successively with absolute ethanol and distilled water, and dried at 80° C. for 8 hours to obtain catalyst 3 .

[0029] It can be seen from the X-ray electron diffraction image of the photocatalyst 3 that the photocatalyst 3 is a pure phase of silver phosphate. From the electron microscope topography of photocatalyst 3, it can be seen that photocatalyst 3 is a hollow tubular microporous structure assembled by a large number of small nanoparticles.

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 provides a preparation method of a silver phosphate photocatalyst, and relates to the field of catalysts. The preparation method comprises the following steps: (1), sequentially adding silver acetate and phosphoric acid water solution into polyethylene glycol 200, adjusting the pH value to be 5 to 6, and reacting at stirring state; and (2), performing centrifugation to take precipitate after the reaction in the second step is accomplished, washing the precipitate, and then obtaining the silver phosphate photocatalyst after drying. The preparation method is simple, low in cost, energy-saving and environmentally friendly, and does not produce accessory substance. The silver phosphate photocatalyst obtained through the preparation method has a novel tubular microcellular structure and high photocatalytic activity.

Description

technical field [0001] The invention relates to the field of catalysts, in particular to a method for preparing a silver phosphate photocatalyst. Background technique [0002] The sustainable development of human society and economy is increasingly confronted with the two major problems of energy shortage and environmental degradation. China, which is in a stage of rapid development, has a particularly urgent demand for research and development of clean energy and environmental protection technologies. Theoretically, using sunlight energy to produce hydrogen energy and degrade organic pollutants in the environment is an ideal way to solve the above problems, and the development of related technologies and new materials has broad prospects (Zhang Tong, 2009). [0003] In 1972, Japanese scientist Fujishima et al. discovered that TiO2 single-crystal electrodes can realize photocatalytic water splitting (FujishimaA, 1972), and later discovered that nano-TiO2 has the ability to p...

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): B01J27/18B01J35/04
Inventor 陈敏东华夏滕飞刘海秋金宇舰
Owner NANJING UNIV OF INFORMATION SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap