Unlock instant, AI-driven research and patent intelligence for your innovation.

A three-dimensional ordered macroporous zno‑cu with tunable oxygen vacancies 2 o‑tio 2 Composite oxide, preparation method and application thereof

A composite oxide, zno-cu2o-tio2 technology, applied in the protection device against harmful chemicals, etc., can solve the problems of difference in charge properties, difficulty in preparing colloidal three-position ordered macropores, etc., to achieve gelation rate, Improve photocatalytic performance and facilitate modulation

Active Publication Date: 2017-10-27
ANHUI POLYTECHNIC UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when multiple components are introduced into the colloid preparation process, the formation of colloids and the preparation of three-dimensional ordered macropores become very difficult due to the objective differences in the ionic charge properties of the added multi-component elements.

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 three-dimensional ordered macroporous zno‑cu with tunable oxygen vacancies <sub>2</sub> o‑tio <sub>2</sub> Composite oxide, preparation method and application thereof
  • A three-dimensional ordered macroporous zno‑cu with tunable oxygen vacancies <sub>2</sub> o‑tio <sub>2</sub> Composite oxide, preparation method and application thereof
  • A three-dimensional ordered macroporous zno‑cu with tunable oxygen vacancies <sub>2</sub> o‑tio <sub>2</sub> Composite oxide, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A three-dimensional ordered macroporous ZnO-Cu with tunable oxygen vacancies 2 O-TiO 2 Composite oxides, Cu(NO 3 ) 2 ·3H 2 O and Zn(NO 3 ) 2 ·6H 2 The molar concentrations of O in ethylene glycol are 0.010mol / L and 0.029mol / L, respectively.

[0039] A three-dimensional ordered macroporous ZnO-Cu with tunable oxygen vacancies 2 O-TiO 2 The preparation method of composite oxide comprises the following steps:

[0040] a. At 25°C, add 0.207mmol Cu(NO 3 ) 2 ·3H 2 O and 0.571mmol Zn(NO 3 ) 2 ·6H 2 O magnetic stirring to dissolve, then add 6.8mL butyl titanate and seal with plastic wrap to continue stirring for 5h;

[0041] b. Then move the obtained solution into a water bath at 40°C for aging for 3 hours, then immerse the polystyrene colloidal crystal template in the solution, and after 24 hours, dry the mixture at 70°C for 12 hours; then dry it at 600°C Calcined for 3 hours, you can get three-dimensional ordered macroporous ZnO-Cu 2 O-TiO 2 composite oxides...

Embodiment 2

[0048] A three-dimensional ordered macroporous ZnO-Cu with tunable oxygen vacancies 2 O-TiO 2 Composite oxides, in which Cu(NO 3 ) 2 ·3H 2 O and Zn(NO 3 ) 2 ·6H 2 The molar concentrations of O in ethylene glycol are 0.019mol / L and 0.018mol / L, respectively.

[0049] A three-dimensional ordered macroporous ZnO-Cu with tunable oxygen vacancies 2 O-TiO 2 The preparation method of composite oxide comprises the following steps:

[0050] a. Add 0.373mmol Cu(NO 3 ) 2 ·3H 2 O and 0.369mmol Zn(NO 3 ) 2 ·6H 2 O magnetic stirring to dissolve, then add 6.8mL butyl titanate and seal with plastic wrap to continue stirring for 5h;

[0051] b. Then move the obtained solution into a water bath at 30° C. for aging for 5 hours. Then the colloidal crystal template was immersed in the solution, and after 24 hours, the mixture was dried at 60° C. for 20 hours. Then it is calcined at 550°C for 5h to obtain three-dimensional ordered macroporous ZnO-Cu 2 O-TiO 2 composite oxides.

...

Embodiment 3

[0058] A three-dimensional ordered macroporous ZnO-Cu with tunable oxygen vacancies 2 O-TiO 2 Composite oxides, in which Cu(NO 3 ) 2 ·3H 2 O and Zn(NO 3 ) 2 ·6H 2 The molar concentrations of O in ethylene glycol are 0.029mol / L and 0.010mol / L, respectively.

[0059] A three-dimensional ordered macroporous ZnO-Cu with tunable oxygen vacancies 2 O-TiO 2 The preparation method of composite oxide comprises the following steps:

[0060] a. Add 0.573mmol Cu(NO 3 ) 2 ·3H 2 O and 0.204mmol Zn(NO 3 ) 2 ·6H 2 O magnetic stirring to dissolve, then add 6.8mL butyl titanate and seal with plastic wrap to continue stirring for 5h;

[0061] b. Then move the obtained solution into a water bath at 50° C. for aging for 3 hours. Then the colloidal crystal template was immersed in the solution, and after 24 hours, the mixture was dried at 50° C. for 24 hours. Then it is calcined at 500°C for 3 hours to obtain three-dimensional ordered macroporous ZnO-Cu 2 O-TiO 2 composite oxides...

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
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a three-dimensional ordered macroporous ZnO-Cu2O-TiO2 composite oxide with a regulatable oxygen vacancy, as well as a preparation method and application of the composite oxide. Compared with the prior art, the preparation method provided by the invention has the advantages that ethylene glycol is taken as a solvent, so that the formation rate of a colloid can be effectively controlled, and the control of the formation rate of the colloid and preparation of the ZnO-Cu2O-TiO2 composite oxide can be realized without adding any acid-alkali regulating agents; meanwhile, a situation of joint oxygen consumption by copper ions and zinc ions is formed according to the variable valence state of the copper ions, so that the concentration of the oxygen vacancy in the composite oxide can be conveniently regulated by adjusting the substance ratio of copper nitrate to zinc nitrate, and the photocatalytic performance of the ZnO-Cu2O-TiO2 composite oxide can be improved.

Description

technical field [0001] The invention belongs to the field of photocatalytic functional materials, in particular to a three-dimensional ordered macroporous ZnO-Cu with adjustable oxygen vacancies 2 O-TiO 2 Composite oxides, preparation methods and applications. Background technique [0002] Semiconductor materials, because of their special electronic structure, have shown significant development potential in the fields of energy and environment, and have attracted extensive attention. Among many semiconductor materials, titanium oxide is one of the most concerned semiconductor materials because of its green, non-toxic, low price, and stable properties. [0003] As we all know, titanium dioxide has special properties in light, electricity, and magnetism, especially in the fields of new energy, photocatalytic environmental purification, and sensing, so it has inestimable research and development value and market applications. [0004] As a catalytic functional material, its ...

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): B01J23/80A62D3/17A62D101/28
Inventor 杨仁春卢小佳刘琪张欢朱玲婷
Owner ANHUI POLYTECHNIC UNIV