Iron and cerium doped nano titanium dioxide multi-component semiconductor photocatalyst preparation method and application

A nano-titanium dioxide, multi-component composite technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems such as photocatalytic oxidation of arsine. Achieve the effect of reducing the forbidden band width, large oxygen storage capacity, and improving catalytic activity

Inactive Publication Date: 2018-09-21
KUNMING UNIV OF SCI & TECH
View PDF8 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There is no method for photocatalytic oxidation of arsine in the prior art

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
  • Iron and cerium doped nano titanium dioxide multi-component semiconductor photocatalyst preparation method and application
  • Iron and cerium doped nano titanium dioxide multi-component semiconductor photocatalyst preparation method and application
  • Iron and cerium doped nano titanium dioxide multi-component semiconductor photocatalyst preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1: a kind of preparation method of iron cerium doped nano-titanium dioxide multi-element composite semiconductor photocatalyst, concrete steps are as follows:

[0047] (1) Prepare 6 groups of solutions A and number 1 to 6: under stirring conditions, add citric acid to absolute ethanol and mix evenly, then add butyl phthalate, mix evenly at a temperature of 30°C to obtain Solution A; wherein the solid-to-liquid ratio g:mL of citric acid and absolute ethanol is 1:4, and the volume ratio of butyl phthalate and absolute ethanol is 1:3;

[0048] (2) Preparation of 6 groups of solutions B and numbering 1 to 6: Ce(NO 3 ) 2 and Fe(NO 3 ) 3 Dissolved in deionized water to obtain solution B; Ti, Ce(NO 3 ) 2 Ce and Fe(NO 3 ) 3 The mol ratio of Fe in is 194:5:11;

[0049] (3) Under the condition of stirring, drop the solution B of the number 1 to 6 in the step (2) dropwise into the solution A of the corresponding number in the step (1), and adjust the solution A ...

Embodiment 2

[0057]Embodiment 2: a kind of preparation method of iron cerium doped nano-titanium dioxide multiple compound semiconductor photocatalyst, concrete steps are as follows:

[0058] (1) Under stirring conditions, add citric acid to absolute ethanol and mix uniformly, then add butyl phthalate, and mix uniformly at a temperature of 35°C to obtain solution A; wherein the solid solution of citric acid and absolute ethanol The liquid ratio g:mL is 1:6, and the volume ratio of butyl phthalate to absolute ethanol is 1:4;

[0059] (2) Ce(NO 3 ) 2 and Fe(NO 3 ) 3 Dissolved in deionized water to obtain solution B; Ti, Ce(NO 3 ) 2 Ce and Fe(NO 3 ) 3 The mol ratio of Fe in is 194:1:19;

[0060] (3) Under stirring conditions, drop solution B in step (2) into solution A corresponding to the number in step (1), adjust the pH value of solution A to 7 with ammonia water, and then put the solution at 60°C Stir until the solution becomes a sol;

[0061] (4) Put the sol obtained in step (3...

Embodiment 3

[0065] Embodiment 3: a kind of preparation method of iron-cerium-doped nano-titanium dioxide multi-component composite semiconductor photocatalyst, the specific steps are as follows:

[0066] (1) Under stirring conditions, add citric acid to absolute ethanol and mix uniformly, then add butyl phthalate, and mix uniformly at a temperature of 40°C to obtain solution A; wherein the solid solution of citric acid and absolute ethanol The liquid ratio g:mL is 2:6, and the volume ratio of butyl phthalate to absolute ethanol is 1:3;

[0067] (2) Ce(NO 3 ) 2 and Fe(NO 3 ) 3 Dissolved in deionized water to obtain solution B; Ti, Ce(NO 3 ) 2 Ce and Fe(NO 3 ) 3 The mol ratio of Fe in is 194:9:2;

[0068] (3) Under stirring conditions, drop solution B in step (2) into solution A corresponding to the number in step (1), adjust the pH value of solution A to 7 with ammonia water, and then put the solution at a temperature of 70°C Stir until the solution becomes a sol;

[0069] (4) Pu...

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
Surface areaaaaaaaaaaa
Pore volumeaaaaaaaaaa
Average pore sizeaaaaaaaaaa
Login to view more

Abstract

The invention belongs to the technical field of catalysts and relates to iron and cerium doped nano titanium dioxide multi-component semiconductor photocatalyst preparation method and application. Themethod includes steps: adding citric acid into absolute ethyl alcohol under a stirring condition, well mixing, then adding dibutyl phthalate, and well mixing at 30-40 DEG C to obtain solution A; dissolving Ce(NO3)2 and Fe(NO3)3 into deionized water to obtain solution B; dropwise adding the solution B into the solution A under the stirring condition, adjusting a pH value of the solution A to 2-12through nitric acid or ammonium hydroxide, and stirring at 50-70 DEG C until the solution turns into sol; treating the sol for 12-24min under a microwave condition to obtain gel, and calcining the gelat 300-600 DEG C for 2-6h to obtain an iron and cerium doped nano titanium dioxide multi-component semiconductor photocatalyst. The iron and cerium doped nano titanium dioxide multi-component semiconductor photocatalyst is efficient in photocatalytic oxidation of elemental mercury and arsenic hydride gas.

Description

technical field [0001] The invention relates to a preparation method and application of an iron-cerium-doped nano-titanium dioxide multi-component composite semiconductor photocatalyst, which belongs to the technical field of catalysts. Background technique [0002] Mercury is a highly toxic substance that accumulates in living organisms and food chains. After mercury is released into the environment, it will exist for a long time, can be transported through the atmosphere for a long distance, and can cause significant adverse effects on human health and the environment through bioaccumulation. At present, the pollution source of atmospheric mercury emission in my country is mainly coal combustion flue gas. On August 16, 2017, my country's important international convention "The Minamata Convention on Mercury" came into effect. China is a large coal-burning country, and the situation of mercury pollution is severe. The development of cost-effective mercury pollution emissio...

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): B01J23/83B01D53/86B01D53/64B01D53/46
CPCB01D53/8665B01D53/8671B01J23/002B01J23/83B01D2257/602B01D2257/553B01J2523/00B01J35/39B01J2523/842B01J2523/3712B01J2523/47
Inventor 王学谦周亚楠宁平王琪任远航李仁君
Owner KUNMING UNIV OF 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
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