Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of bismuthyl carbonate

A bismuth oxycarbonate and bismuth nitrate technology, which is applied in chemical instruments and methods, bismuth compounds, physical/chemical process catalysts, etc., can solve problems such as large size of bismuth oxycarbonate microspheres, less environmentally friendly environmental applications, and long reaction time , to achieve the effect of uniform shape, easy mass production and low cost

Inactive Publication Date: 2019-12-20
GUANGZHOU UNIVERSITY
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bismuth oxycarbonate microspheres synthesized by this method have an average size of 5-15 μm, high temperature and long reaction time, and are not environmentally friendly in environmental applications.

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 bismuthyl carbonate
  • Preparation method of bismuthyl carbonate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of preparation method of bismuth oxycarbonate as the embodiment of the present invention, described method comprises the following steps:

[0034] (1) 7.5 mmol of bismuth nitrate pentahydrate was dissolved in 25 mL of 1 mol / L dilute nitric acid, ultrasonically treated for 5 minutes and magnetically stirred for 10 minutes to obtain solution A;

[0035] (2) Add 5 mmol citric acid to solution A, and stir magnetically for 10 minutes until clear solution B is obtained;

[0036] (3) dropwise adding 2mol / L sodium hydroxide solution to the solution B to adjust the pH of the solution B to be 7.5, to obtain the mixed system C;

[0037] (4) Put the mixed system C in the reaction kettle to carry out the hydrothermal synthesis reaction at 180°C for 12 hours;

[0038] (5) naturally cool to room temperature, centrifuge the product obtained in step (4) and collect the solid, wash the solid with water for 3 times and wash with alcohol for 3 times, then dry it in a vacuum oven at...

Embodiment 2

[0049] As a method for degrading organic dyes in water according to an embodiment of the present invention, the method comprises the following steps:

[0050] (1) 25mg of bismuth oxycarbonate prepared in Example 1 was added to 50mL of 20mg / L methyl orange solution, dispersed evenly, mixture system A;

[0051] (2) The mixture system A was kept stirring for 60 minutes in the dark;

[0052] (3) Use a 500W mercury lamp to irradiate the mixture system A, and take samples at set intervals, then immediately separate the solid and liquid and record the reaction time.

[0053]The concentration of methyl orange in the sample was measured at 463 nm with a Shimadzu-2500 ultraviolet-visible spectrophotometer, and it was found that the degradation efficiency was 99.2% in 90 minutes.

Embodiment 3

[0055] As a method for degrading organic dyes in water according to the embodiment of the present invention, the only difference between this embodiment and embodiment 2 is: adding 25 mg of bismuth oxycarbonate prepared in embodiment 1 to 50 mL of 20 mg / L rhodamine B solution middle.

[0056] The rhodamine B concentration in the sample was measured at 554 nm with a Shimadzu-2500 ultraviolet-visible spectrophotometer, and it was found that the degradation efficiency was 99.9% in 20 minutes.

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 bismuthyl carbonate. The method includes the steps of: (1) dissolving bismuth nitrate in dilute nitric acid to obtain a solution A; (2) adding citric acid into the solution A, and performing stirring to obtain a clarified solution B; (3) adding strong alkali dropwise into the solution B to adjust the pH to 7-9, thus obtaining a mixed system C; (4) putting the mixed system C into a closed container, and carrying out hydrothermal synthesis reaction at 170DEG C-200DEG C for 8-24h; and (5) carrying out solid-liquid separation on the product obtained in step (4), then collecting the solid, conduct water washing and alcohol washing on the solid, then performing drying, and conducting grinding. The method provided by the invention has a simple technological process, mild reaction conditions and is low in cost, and the prepared bismuthyl carbonate microspheres are uniform in morphology and particle size, have a flower-like layered microstructure composed of a plurality of nanosheets, and have high specific surface area and high catalytic performance.

Description

technical field [0001] The invention belongs to the field of preparation of catalytic materials, in particular to a preparation method of bismuth oxycarbonate. Background technique [0002] In recent years, photocatalysis has been recognized as an effective advanced oxidation process (AOPs) for the treatment of wastewater contaminated with organic chemicals. Bismuth-based semiconductors, photocatalytic materials, have attracted more attention from researchers because of their low cost of raw materials, simple preparation process, strong shape controllability, and good response to visible light. Among them, Bi 2 o 2 CO 3 Become a photocatalyst with great development potential. Chinese Patent Publication No. CN101817555A discloses a bismuth oxycarbonate microflower material with a hierarchical structure and a preparation method thereof. Bismuth nitrate is dissolved in dilute nitric acid, and excess sodium carbonate is added dropwise, followed by a warm bath. This method i...

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): C01G29/00B01J27/236B01J35/08C02F1/30
CPCC01G29/00B01J27/236C02F1/30C02F2305/10C02F2101/308C01P2002/72C01P2004/03B01J35/51B01J35/39
Inventor 苏敏华徐锐冰刘永慧陈子彪纪澄杨敏玲陈迪云
Owner GUANGZHOU UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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