Method for preparing cobalt carbonate-cobalt phosphate composite photocatalyst

A cobalt carbonate composite cobalt phosphate photocatalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems that need to be improved

Inactive Publication Date: 2017-08-29
CHANGZHOU UNIV
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of its own characteristics, the performance of ...

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Take by weighing 16mmol cobalt nitrate, configure it into a 12mmol / L cobalt nitrate solution, weigh 8mmol sodium carbonate, configure it into a 16mmol / L sodium carbonate solution; mix the above two solutions at a speed of 350 rpm to form a gel The substance was continuously stirred for 3 hours, and sodium carbonate and cobalt nitrate reacted during the stirring process to generate cobalt carbonate colloid; the cobalt carbonate colloid was placed in a semi-permeable membrane bag, washed 3 times with distilled water to remove free ions, and then the cobalt carbonate colloid was The colloid was added to 60 mL of sodium phosphate solution with a concentration of 2 mol / L, soaked for 2 days, and cobalt phosphate nanoparticles were formed on the surface of cobalt carbonate particles, separated from solid and liquid, washed with deionized water twice, and dried at 75 ° C to obtain a A cobalt carbonate composite cobalt phosphate photocatalyst.

[0013] Add 0.5 g of the obtained ...

Embodiment 2

[0015] Take by weighing 12mmol cobalt nitrate, be configured into a 12mmol / L cobalt nitrate solution, weigh 6.6mmol sodium carbonate, and be configured into a 16mmol / L sodium carbonate solution; the above two solutions are mixed at a speed of 400 rpm to form a gel Stir continuously for 4 hours, during the stirring process, sodium carbonate and cobalt nitrate react to generate cobalt carbonate colloid; place cobalt carbonate colloid in a semi-permeable membrane bag, wash 4 times with distilled water, remove free ions, and then the carbonic acid colloid Cobalt colloid was added to 80 mL of sodium phosphate solution with a concentration of 4 mol / L, soaked for 4 days, and cobalt phosphate nanoparticles were formed on the surface of cobalt carbonate particles, separated from solid and liquid, washed with deionized water for 3 times, and dried at 105 ° C to obtain A cobalt carbonate composite cobalt phosphate photocatalyst.

[0016] Add 0.5g of the obtained cobalt carbonate composit...

Embodiment 3

[0018] Take by weighing 14mmol cobalt nitrate, configure it into a 12mmol / L cobalt nitrate solution, weigh 7mmol sodium carbonate, configure it into a 16mmol / L sodium carbonate solution; mix the above two solutions at a speed of 400 rpm to form a gel The substance was continuously stirred for 4 hours. During the stirring process, sodium carbonate and cobalt nitrate reacted to generate cobalt carbonate colloid; the cobalt carbonate colloid was placed in a semi-permeable membrane bag, washed 4 times with distilled water to remove free ions, and then the cobalt carbonate colloid was The colloid was added to 70 mL of sodium phosphate solution with a concentration of 3 mol / L, soaked for 3 days, and cobalt phosphate nanoparticles were formed on the surface of cobalt carbonate particles, separated from solid and liquid, washed with deionized water for 3 times, and dried at 95 ° C to obtain a A cobalt carbonate composite cobalt phosphate photocatalyst.

[0019] Add 0.5 g of the obtain...

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 method for preparing a cobalt carbonate-cobalt phosphate composite photocatalyst. The method comprises the following specific steps: weighing 12mmol to 16mmol of cobalt nitrate, preparing a 12mmol/L cobalt nitrate solution, weighing 6.6mmol to 8mmol of sodium carbonate, and preparing a 16mmol/L sodium carbonate solution; mixing the two kinds of solutions at the revolution rate of 350rpm to 400rpm so as to form a colloidal substance, carrying out sustained stirring for 3 to 4 hours, and subjecting sodium carbonate and cobalt nitrate to a reaction during stirring, so as to produce cobalt carbonate colloid; putting the cobalt carbonate colloid in a semi-permeable membrane bag, washing with distilled water for 3 to 4 times so as to remove free ions, then, adding the cobalt carbonate colloid into 60mL to 80mL of 2mol/L to 4mol/L sodium phosphate solution, carrying out soaking for 2 to 4 days so as to form cobalt phosphate nanoparticles on surfaces of cobalt carbonate particles, carrying out solid-liquid separation, washing solids with deionized water for 2 to 3 times, and carrying out drying at the temperature of 75 DEG C to 105 DEG C, thereby preparing the cobalt carbonate-cobalt phosphate composite photocatalyst. According to the method, a catalyst is formed on the surface of cobalt carbonate, and the catalyst and a support are combined tightly.

Description

technical field [0001] The invention relates to a preparation method of a cobalt carbonate composite cobalt phosphate photocatalyst, belonging to the technical field of sewage treatment in environmental protection. Background technique [0002] Traditional water treatment methods have problems such as low efficiency, high cost, and secondary pollution, and sewage treatment has not been well resolved. The development and application of nanotechnology is likely to completely solve this problem. TiO was discovered in 1972 2 High oxidation activity, good chemical stability, non-toxic to the human body, low cost, no pollution, wide application range, so it is the most important, but TiO 2 The bandgap width is large (such as anatase TiO 2 The forbidden band width Eg=3.2eV), can only absorb the light in the ultraviolet region (wavelength less than 387nm), and the utilization efficiency of solar energy is low. [0003] Semiconductor photocatalysis is one of the most promising ap...

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): B01J27/232C02F1/30C02F101/30C02F101/34C02F101/38C02F101/36
CPCB01J27/232B01J35/004C02F1/30C02F2101/34C02F2101/36C02F2101/38C02F2101/40C02F2305/10Y02W10/37
Inventor 侯仔尧赵文昌冯婷
Owner CHANGZHOU UNIV
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