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

Transition metal phosphide/bismuth oxyhalide photocatalyst as well as preparation method and application thereof

A transition metal, bismuth oxyhalide technology, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as fuel quality degradation, achieve no by-products, simple operation, and green desulfurization process mild effect

Active Publication Date: 2020-09-04
YANAN UNIV
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, photocatalytic desulfurization technology mostly uses H2O2 as oxidant or ultraviolet light as light source. H2O2 is used to generate OH to oxidize thiophene sulfur compounds during the reaction process, but the OH oxidation ability is too strong and almost non-selective, which will make the aroma in fuel Oxidative decomposition of components such as hydrocarbons and olefins; and ultraviolet light can easily trigger photochemical reactions of aromatic hydrocarbons, olefins and naphthenes in diesel oil, resulting in reduced fuel quality

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
  • Transition metal phosphide/bismuth oxyhalide photocatalyst as well as preparation method and application thereof
  • Transition metal phosphide/bismuth oxyhalide photocatalyst as well as preparation method and application thereof
  • Transition metal phosphide/bismuth oxyhalide photocatalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037] The present invention provides the preparation method of transition metal phosphide / bismuth oxyhalide photocatalyst described in the technical scheme, comprising the following steps:

[0038] (1) dissolving the bismuth salt and the halide salt in an alcoholic solvent, mixing the obtained mixed solution with an aqueous alkaline reagent solution, and performing a first hydrothermal reaction to obtain bismuth oxyhalide;

[0039] (2) Mix transition metal salt, phosphorus source, surfactant and alcohol-water mixed solvent, carry out second hydrothermal reaction, obtain transition metal phosphide;

[0040] (3) Mix the bismuth oxyhalide, transition metal phosphide and oxygen-containing reagent, and carry out liquid phase assembly to obtain transition metal phosphide / bismuth oxyhalide photocatalyst;

[0041] There is no chronological order restriction between said step (1) and step (2).

[0042] In the present invention, unless otherwise specified, all raw material components ...

Embodiment 1

[0090] (1) 3mmol Bi(NO 3 ) 3 ·5H 2 O was dissolved in 30mL of ethylene glycol and stirred for 30min, then 3mmolKBr was added and stirred for 30min, and 20mL of 12.5wt% ammonia solution was added dropwise and stirred for 2h; The first hydrothermal reaction was carried out at ℃ for 20 hours, the obtained reaction system was subjected to centrifugation, the obtained solid product was washed 3 times with water and 3 times with alcohol, and then vacuum-dried at 60 ℃ for 12 hours to obtain bismuth oxyhalide (Bi 4 o 5 Br 2 ).

[0091] (2) 1mmolNiCl 2 ·6H 2 O was dissolved in 50mL ethanol-water mixed solution (volume ratio of water and alcohol=1:1), and 8mmolNaH 2 PO 2 ·H 2 O, 0.1g CTAB and 0.15g SDBS, stirred and mixed for 30min, transferred the obtained mixed solution to a 100mL reaction kettle, carried out the second hydrothermal reaction at 140°C for 12h, centrifuged the obtained reaction system, and obtained the solid The product was washed 3 times with water and 3 times ...

Embodiment 2

[0097] (1) 5mmol Bi(NO 3 ) 3 ·5H 2 O was dissolved in 40mL of ethylene glycol and stirred for 30min, then 5mmolNaBr was added and stirred for 40min, 20mL of ammonia solution with a concentration of 15wt% was added dropwise and stirred for 3h; The first hydrothermal reaction was carried out under the conditions for 20 hours, the obtained reaction system was subjected to centrifugation, the obtained solid product was washed with water for 3 times and with alcohol for 3 times, and then vacuum-dried at 60°C for 12 hours to obtain bismuth oxyhalide (Bi 24 o 31 Br 10 ).

[0098] (2) 0.5mmolNiCl 2 ·6H 2 O, 0.5mmol CoCl 2 ·6H 2 O was dissolved in 50mL ethanol-water mixed solution (volume ratio of water and alcohol = 2:3), 15mmol red phosphorus, 0.1g CTAB and 0.1g SDBS were added, stirred and mixed for 30min, and the resulting mixture was transferred to a 100mL reaction kettle , carry out the second hydrothermal reaction at 200°C for 16h, centrifuge the obtained reaction syste...

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
Thicknessaaaaaaaaaa
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a transition metal phosphide / bismuth oxyhalide photocatalyst as well as a preparation method and an application thereof, and belongs to the technical field of catalysts. The invention provides the transition metal phosphide / bismuth oxyhalide photocatalyst. The transition metal phosphide / bismuth oxyhalide photocatalyst comprises bismuth oxyhalide and transition metal phosphide loaded on the surface of the bismuth oxyhalide, wherein the bismuth oxyhalide has a two-dimensional nanosheet structure; wherein the transition metal phosphide has a nanoparticle structure. According to the transition metal phosphide / bismuth oxyhalide photocatalyst provided by the invention, bismuth oxyhalide is large in specific surface area and good in visible light response performance, and thiophene sulfide can be oxidized into strong-polarity sulfoxide or sulfone under visible light illumination; the transition metal phosphide can enhance the light absorption of the photocatalyst in a visible light range, can also improve the photo-induced electron hole separation efficiency of the photocatalyst, enhances the selective catalytic removal activity of aromatic heterocyclic thiophene sulfide in fuel oil, and has good photocatalytic oxidation desulfurization activity and selectivity.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a transition metal phosphide / bismuth oxyhalide photocatalyst and a preparation method and application thereof. Background technique [0002] SO produced by fuel combustion x It is the main factor that causes air pollution such as acid rain and smog. With the increasing scarcity of global oil resources and the increasing awareness of environmental protection, strict regulations have been imposed on the sulfur content of fuel oil. The development and utilization of clean fuel oil has become a solution to energy and environmental problems. Low-sulfur or even "zero-sulfur" diesel has become an inevitable direction for the development of clean fuel. [0003] Existing desulfurization technologies mainly include hydrodesulfurization technology and non-hydrogenation desulfurization technology. The traditional hydrodesulfurization technology operates under harsh operating conditions, ...

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): B01J27/186B01J35/00B01J37/04B01J37/10C10G27/04C10G32/04
CPCB01J27/186B01J37/10B01J37/04C10G32/04C10G27/04C10G2300/202B01J35/39Y02E60/36
Inventor 万俊孙凯龙付峰王雪敏刘琳张悦刘佳庆
Owner YANAN UNIV
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