Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Method for preparing tetrahedral silver phosphate photocatalyst

A technology of tetrahedron and catalyst, which is applied in the field of photocatalysis, can solve the problems of large particle radius dispersion, silver phosphate particles without regular shape size, and irregular shape, etc., to achieve large-scale promotion, low cost, and synthetic short cycle effect

Inactive Publication Date: 2013-08-28
NANJING UNIV OF INFORMATION SCI & TECH
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ye Jinhua's group prepared silver phosphate by solid phase method (Z. Yi, J. Ye, N. Kikugawa, T. Kako, S. Ouyang, H.S. Williams, H. Yang, J. Cao, W. Luo, Z. Li , Y. Liu, R.L. Withers, Nature Materials 9 (2010) 559.), but the obtained silver phosphate particles have no regular shape and large size. Generally speaking, the particle radius dispersion of the product obtained by solid-state reaction is large, and irregular shape

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
  • Method for preparing tetrahedral silver phosphate photocatalyst
  • Method for preparing tetrahedral silver phosphate photocatalyst
  • Method for preparing tetrahedral silver phosphate photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0021] At room temperature, take 40mL of pure water (deionized water), pour it into a beaker, add 0.318g of silver nitrate under stirring conditions, then add 0.315g of urotropine, stir well, and finally add 123μL of phosphoric acid, stir After five minutes, centrifuge to wash the precipitate, and dry it at 60°C to obtain tetrahedral silver phosphate. figure 1 , figure 2 It is a scanning electron microscope image (SEM) of the product prepared in this embodiment, and it can be seen from the figure that it is tetrahedral.

[0022] The obtained tetrahedral silver phosphate and dodecahedral silver phosphate were used as catalysts to degrade Rhodamine B. Weighed 100mg sample and added 200mL Rhodamine B solution (10-50mg / L), and stirred in the dark for 30 minutes to make the Rhodamine B solution Adsorption / desorption equilibrium is reached on the catalyst surface. Then turn on the light source for photocatalytic reaction, take 15mL reaction solution every 3 minutes, after centri...

Embodiment example 2

[0024] At room temperature, take 40mL of pure water (deionized water), pour it into a beaker, add 0.3g of silver nitrate under stirring conditions, then add 0.2g of urotropine, stir well, and finally add 100μL of phosphoric acid, stir After five minutes, centrifuge to wash the precipitate, and dry it at 40°C to obtain tetrahedral silver phosphate.

Embodiment example 3

[0026] At room temperature, take 40mL of pure water (deionized water), pour it into a beaker, add 0.4g of silver nitrate under stirring conditions, then add 0.4g of urotropine, stir well, and finally add 130μL of phosphoric acid, stir After five minutes, centrifuge to wash the precipitate, and dry it at 50°C to obtain tetrahedral silver phosphate.

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

PropertyMeasurementUnit
crystal sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a novel method for preparing a tetrahedral silver phosphate photocatalyst. The silver phosphate photocatalyst is tetrahedral. The method is characterized by comprising the steps of taking separate water as a solvent, sequentially adding silver nitrate, urotropine and phosphoric acid while stirring, and carrying out centrifugal drying finally, thereby preparing the tetrahedral silver phosphate photocatalyst. The method disclosed by the invention is environment-friendly, simple, low in cost and easy to popularize; and the photocatalyst can be used for removing organic pollutants from water efficiently and has good application prospects.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis, in particular to a method for preparing a tetrahedral silver phosphate photocatalyst. Background technique [0002] In order to maximize the use of sunlight, it is expected to develop more efficient visible light-responsive photocatalysts. In response to this problem, researchers from the Photocatalyst Materials Center of the Japan Institute of Materials and Materials Research focused on the silver phosphate (Ag 3 PO 4 ), according to the experimental results of its water decomposition performance and paint decomposition performance under visible light irradiation, it was found that the photooxidation performance of silver phosphate under visible light is dozens of times that of the currently known photocatalysts. The relevant results were published in the "Nature" journal Materials Edition in an article entitled "Phosphate Semiconductors with Photooxidative Properties Under Visible Ligh...

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 Applications(China)
IPC IPC(8): B01J27/18B01J37/02
Inventor 滕飞汪凯李娜华夏陈敏东
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
Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com