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

Method for preparing acidification stripped vermiculite supported TiO2 photocatalyst

A photocatalyst and vermiculite technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of difficult separation and recycling, and achieve easy separation and recycling, low preparation cost, The effect of improving utilization

Inactive Publication Date: 2014-04-16
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
View PDF1 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to, in order to solve TiO 2 It is difficult to separate and recycle photocatalysts in the practical application of photocatalytic degradation of organic pollutants, and to provide an acidification exfoliation vermiculite loaded TiO 2 photocatalytic method

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
  • Method for preparing acidification stripped vermiculite supported TiO2 photocatalyst
  • Method for preparing acidification stripped vermiculite supported TiO2 photocatalyst
  • Method for preparing acidification stripped vermiculite supported TiO2 photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] a. Sieve the vermiculite to 200 meshes, add 30% of the mass fraction into the 1mol / L hydrochloric acid solution, react for 6 hours, filter and wash to neutrality, and dry the filter cake at a temperature of 60°C for 12 hours. Grinding to obtain acidified exfoliated vermiculite, the acidified exfoliated vermiculite is a completely exfoliated lamellar structure with a surface rich in silanol;

[0027] b. Disperse 0.283 g of acidified exfoliated vermiculite in step a in 100 mL of deionized water, add 0.02 mol hydrochloric acid, and cool down to 1 °C;

[0028]c, tetra-n-butyl titanate is mixed with analytical pure ethanol solvent in a molar ratio of 1:30, and added to the acid solution containing acidified exfoliated vermiculite in step b to obtain [Ti] / [H + ] The molar ratio is 1: 2, the ratio of tetra-n-butyl titanate and acidified exfoliated vermiculite is the mixture of 35mmol / g, and the mixture is transferred to the reactor after continuing to stir for 3 hours at a tem...

Embodiment 2

[0042] a. Pass the vermiculite through a 300 mesh sieve, add 40% by mass fraction into a 2.5mol / L sulfuric acid solution, react for 6 hours, filter and wash until neutral, and dry the filter cake at a temperature of 100°C for 8 hours, The acidified exfoliated vermiculite is obtained by grinding, and the acidified exfoliated vermiculite is a completely exfoliated lamellar structure with a surface rich in silicon hydroxyl groups;

[0043] b. Disperse 0.331 g of acidified exfoliated vermiculite in step a in 50 mL of deionized water, add 0.03 mol hydrochloric acid, and cool down to 0.2 °C;

[0044] c, tetra-n-butyl titanate is mixed with analytical pure isopropanol solvent in a molar ratio of 1:35, and added to the acid solution containing acidified exfoliated vermiculite in step b to obtain [Ti] / [H + ] Molar ratio is 1: 3, the ratio of tetra-n-butyl titanate and acidified exfoliated vermiculite is the mixture of 30mmol / g, this mixture is transferred in the reaction kettle after c...

Embodiment 3

[0048] a. Pass the vermiculite through a 300 mesh sieve, add 20% by mass fraction into a 1.5mol / L phosphoric acid solution, react for 8 hours, filter and wash until neutral, and dry the filter cake at a temperature of 80°C for 8 hours, The acidified exfoliated vermiculite is obtained by grinding, and the acidified exfoliated vermiculite is a completely exfoliated lamellar structure with a surface rich in silicon hydroxyl groups;

[0049] b. Disperse 0.397 g of acidified exfoliated vermiculite in step a in 80 mL of deionized water, add 0.04 mol of hydrochloric acid, and cool down to 3 °C;

[0050] c, tetraisopropyl titanate is mixed with analytical pure ethanol solvent in a molar ratio of 1:10, and added to the acid solution containing acidified exfoliated vermiculite in step b to obtain [Ti] / [H + ] Molar ratio is 1: 4, the ratio of tetraisopropyl titanate and acidified exfoliated vermiculite is the mixture of 25mmol / g, this mixture is transferred in the reaction kettle after c...

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
specific surface areaaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for preparing an acidification stripped vermiculite supported TiO2 photocatalyst. Cheap acidification stripped vermiculite lamina are used as a support, and a TiO2 photocatalyst is supported on the laminar surface of the acidification stripped vermiculite, so that the organic pollutants are treated by integrated adsorption-photocatalysis, and the catalyst is easy to separate and recycle. The simple acid treatment is utilized to obtain the large-specific-area acidification stripped vermiculite lamina containing rich hydroxyl groups on the surface; and the acidification stripped vermiculite supported TiO2 photocatalyst is synthesized by a simple hydrothermal method by using the acidification stripped vermiculite as the support of the TiO2 nano photocatalyst. The method is simple and low in cost; the obtained supported TiO2 photocatalyst is a TiO2 nanoparticle lamina of which the acidification stripped vermiculite laminar surface grows uniformly and orderly and forms a flat porous sponge; and the supported TiO2 photocatalyst has large specific area and high photocatalytic activity, is convenient for treating organic pollutants by integrated adsorption-photocatalysis, is easy to separate and recycle, and can be widely used for environmental treatment, such as purifying treatment of wastewater, sewage, indoor / outdoor gas contamination and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of photocatalytic materials and treatment of environmental pollutants, in particular to a method for preparing acidified exfoliated vermiculite loaded TiO 2 The photocatalyst method, the prepared catalyst is a green photocatalyst that can efficiently and stably realize the integrated treatment of organic pollutants by adsorption-photocatalysis and is easy to separate and recycle. It is mainly used in environmental treatment, such as waste water, sewage, indoor Purification treatment such as external gas pollution. Background technique [0002] Photocatalytic oxidation technology has the characteristics of simple equipment, mild and controllable reaction conditions, and strong mineralization ability. It has broad application prospects in low-concentration biodegradable organic pollutants and air purification. In water treatment applications, traditional photocatalytic reactions are mostly carr...

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 Patents(China)
IPC IPC(8): B01J21/16C02F1/30
Inventor 王兰王传义
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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