a tio 2 Preparation method and application of @yeast

A yeast and dry yeast technology, applied in the fields of nanomaterials and environmental science, can solve the problems of damaging the yeast surface structure, difficult to achieve precise regulation, unable to obtain monodispersity, quantum dots, and crystal form controllable, etc. Catalytic properties, improve photocatalytic efficiency, enhance the effect of quantum effects

Inactive Publication Date: 2016-09-28
CHANGAN UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

lead to its structural parameters, such as TiO 2 It is difficult to achieve precise control of crystal form and particle size, and it is impossible to obtain TiO with monodisperse, quantum dot, and controllable crystal form. 2 @yeast
[0006] Preparation of TiO by Hydrothermal Method Using Titanyl Sulfate as Raw Material 2 @Yeast, though got nano TiO 2 It has the advantages of high purity, good crystal form, narrow distribution, and controllable shape, but because TiOSO 4 The pH required during the hydrothermal reaction is too low, severely damaging the structure of the yeast surface

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
  • a tio <sub>2</sub> Preparation method and application of @yeast
  • a tio <sub>2</sub> Preparation method and application of @yeast
  • a tio <sub>2</sub> Preparation method and application of @yeast

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Wash the yeast three times with distilled water and ethanol, dissolve in 30mL distilled water, stir until evenly dispersed; centrifuge and separate the obtained yeast solution, wash the obtained yeast three times with distilled water and absolute ethanol, and obtain the product Dry it in an air blast drying oven at 80°C, and cool it at room temperature to obtain yeast for measuring SEM, EDS and UV-vis.

[0037] figure 1 (a), (b) are SEM images of yeast, figure 2 (a) is the EDS spectrum, image 3 (a) is the XRD pattern. From the above spectrum, it can be seen that yeast has a unique ellipsoid appearance, the main constituent elements of the cell wall are C, H (not shown), O, N, P, and S, and the main characteristic peak is the steamed bread peak at θ=20°.

Embodiment 2

[0039] Dilute titanium tetrachloride to 0.1mol / L, adjust the pH of the system to 4-6 with 4mol / L NaOH, continue to stir the mixed solution and transfer it to the reactor (filling rate is 70%-80%), and control the temperature The thermal hydrolysis reaction was carried out at 120° C., and the time was controlled at 3 hours.

[0040] The obtained solution is centrifuged and separated, and the obtained TiO 2 After washing 3 times, the obtained product was dried in a blast drying oven at 80°C, and cooled at room temperature to obtain TiO 2 .

[0041] image 3 (d) for the TiO prepared here 2 XRD spectrum, Figure 4 (a) is the UV-vis spectrum.

Embodiment 3

[0043] Wash the yeast three times with distilled water and ethanol, dissolve in 30mL distilled water, and stir until evenly dispersed;

[0044] Dilute titanium tetrachloride to 0.1mol / L, adjust the pH of the system to 4-6 with 4mol / L NaOH, control the ratio of yeast and titanium tetrachloride to 1:0.5 (g:mmol), and mix yeast and tetrachloride Titanium chloride is thoroughly mixed.

[0045] Continue to stir the mixed solution and then transfer it to the reactor (the filling rate is 70%-80%), and control the temperature at 120° C. to carry out the thermal hydrolysis reaction, and the time is controlled at 3 hours.

[0046] Centrifuge and separate the obtained solution, wash the obtained catalyst three times with distilled water and absolute ethanol, dry the obtained product in a blast drying oven at 80°C, and cool it at room temperature to obtain the catalyst with a core-shell structure. catalyst.

[0047] figure 1 (c), (d) for this TiO 2 SEM image of @yeast, figure 2 (b) ...

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
diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to view more

Abstract

The present invention relates to a kind of TiO 2 The preparation method and application of @yeast, the TiO involved 2 The preparation method of @yeast includes: under the conditions of 100-150°C and pH 4-6, the reaction of yeast and titanium tetrachloride aqueous solution to prepare TiO 2 @yeast. The preparation method uses titanium tetrachloride as a raw material. During the thermal hydrolysis process, the ratio, concentration and reaction temperature of the raw materials are strictly controlled, relying on the functional groups on the surface of yeast to limit the reaction nuclei formed by titanium tetrachloride in the hydrolysis process. domain effect, reaching TiO 2 Monodisperse and less agglomerated effects on yeast surfaces. The prepared TiO 2 @Yeast is used to remove pollutants in industrial sewage, especially for the removal of cyanide and copper ions in cyanide copper plating wastewater.

Description

technical field [0001] The invention belongs to the field of nanomaterials and environmental science, in particular to a TiO 2 The preparation method of @yeast also involves the prepared TiO 2 The application of @yeast. Background technique [0002] In the process of beer production, a large amount of discarded Saccharomyces cerevisiae will be produced, forming yeast sludge. The amount of waste yeast produced in our country is huge every year. Therefore, the rational use of waste beer yeast can realize resource recycling and maintain ecological balance. The surface of waste beer yeast has a flocculent, porous, and loose structure. This structure provides a huge surface area for adsorption, so that many functional groups can contact with the adsorbate to achieve the purpose of adsorbing pollutants. [0003] TiO 2 As the most widely used photocatalyst at present, it has attracted the attention of researchers. It has high photocatalytic efficiency and low pollution. It is a...

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): B01J20/24B01J20/30B01J31/38B01J35/00C02F1/32C02F1/58C02F1/62
Inventor 白波李宏颖郑佩秦昉吴菲宋蕊同致庆
Owner CHANGAN 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