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

Preparation method and application of graded-structure BiOI/Bi2MoO6 composite visible light catalyst

A hierarchical structure, visible light technology, applied in the field of environmental pollution control, can solve the problem of low electron/hole separation efficiency, achieve excellent visible light catalytic degradation activity, easy preparation process, and improved degradation efficiency

Inactive Publication Date: 2015-05-27
UNIV OF JINAN
View PDF3 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

BiOI / Bi with hierarchical structure prepared by solvothermal-deposition 2 MoO 6 Composite visible light catalyst material to solve the problem of low electron / hole separation efficiency in the prior art although photocatalysts have a good visible light response range

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 and application of graded-structure BiOI/Bi2MoO6 composite visible light catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 Bi 2 MoO 6 Preparation of microspheres

[0021] Synthesis of Bi by solvothermal method 2 MoO 6 Microspheres, weighing 0.485 g Bi(NO 3 ) 3 ·5H 2 O was added to 10 mL of ethylene glycol solution, ultrasonically dispersed, and completely dissolved into a transparent solution; 60 mL of absolute ethanol was slowly added to the transparent solution, magnetically stirred, and 0.0618 g (NH 4 ) 6 Mo 7 o 24 4H 2 O, magnetic stirring to dissolve completely; move it to a 100 mL autoclave, and react at 140 °C for 16 h; after the autoclave gradually cools down to room temperature, centrifuge to precipitate, and wash with ethanol and deionized water for 3 The second time, the product was placed in an oven at 60 °C for 6 h.

Embodiment 2

[0022] Example 2 Bi 2 MoO 6 Preparation of microspheres

[0023] Synthesis of Bi by solvothermal method 2 MoO 6 Microspheres, weighing 0.97 g Bi(NO 3 ) 3 ·5H 2 O was added to 20 mL of ethylene glycol solution, ultrasonically dispersed to make it completely dissolved into a transparent solution; 50 mL of absolute ethanol was slowly added to the transparent solution, magnetically stirred, and 0.1236 g (NH 4 ) 6 Mo 7 o 24 4H 2 O, magnetic stirring to make it completely dissolved; move it to a 100 mL autoclave, and react at 160 °C for 12 h; after the autoclave gradually cooled to room temperature, centrifuge to precipitate, wash with ethanol and deionized water for 3 The second time, the product was placed in an oven at 70 °C for 5 h.

Embodiment 3

[0024] Example 3 Bi 2 MoO 6 Preparation of microspheres

[0025] Synthesis of Bi by solvothermal method 2 MoO 6Microspheres, weighing 1.455 g Bi(NO 3 ) 3 ·5H 2 O was added to 30 mL of ethylene glycol solution, ultrasonically dispersed, and completely dissolved into a transparent solution; 40 mL of absolute ethanol was slowly added to the transparent solution, magnetically stirred, and 0.1854 g (NH 4 ) 6 Mo 7 o 24 4H 2 O, magnetic stirring to dissolve completely; move it to a 100 mL autoclave, and react at 180 °C for 10 h; after the autoclave gradually cools down to room temperature, centrifuge to precipitate, and wash with ethanol and deionized water for 3 The second time, the product was placed in an oven at 80 °C for 4 h.

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
wavelengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a graded-structure BiOI / Bi2MoO6 composite visible light catalyst and belongs to the technical field of environment pollution management. The preparation method is characterized by comprising the following steps: firstly, preparing Bi2MoO6 from Bi(NO3)3.5H2O and (NH4)6Mo7O24.4H2O through a solvent thermal method under the condition of a glycol / absolute ethyl alcohol mixed solvent; and by utilizing a chemical deposition method and taking Bi(NO3)3.5H2O as a bismuth source, KI as an iodine source and glycol / water as the mixed solvent, preparing the graded-structure BiOI / Bi2MoO6 composite visible light catalyst for visible light catalytic degradation of an endocrine disrupter bisphenol A and a dye pollutant methylene blue MB. The preparation method has the advantages of simplicity in operation, stable performance, high degradation efficiency, no other pollutants in a preparation process and the like, and has very high practical values and application prospects.

Description

technical field [0001] The invention belongs to the technical field of environmental pollution control, in particular to a hierarchical structure BiOI / BiOI 2 MoO 6 Preparation method and application of composite visible light catalyst. Background technique [0002] Photocatalysis is one of the most active research fields at home and abroad in recent years, and its basic research, especially application development research, develops very rapidly. Traditional wide-bandgap photocatalysts such as titanium dioxide are widely favored by people because of their high photocatalytic activity, strong oxidation ability, good chemical stability, non-toxicity and no secondary pollution. However, there are inevitably some shortcomings, such as: nano-TiO 2 The photoresponse range is narrow, and its light absorption range is limited to the ultraviolet region; TiO 2 The recombination probability of photogenerated electron and hole pairs in the catalyst is relatively high, which greatly ...

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): B01J27/132C02F1/30C02F101/34C02F103/06
Inventor 闫涛王晓东魏琴杜斌刘红烨孙蒙闫良国
Owner UNIV OF JINAN
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