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

Ordered meso-porous (TiO2-Cu) nanocomplex and its hydrothermal supercritical extraction preparation technology

A nanocomposite and preparation process technology, which is applied in the field of ordered mesoporous nanocomposite and hydrothermal supercritical extraction preparation technology, can solve the problems of reduced specific surface area and pore collapse of synthetic materials, and achieves large specific surface area and low cost Treatment cost, effect of high photocatalytic performance

Inactive Publication Date: 2013-06-12
JISHOU UNIVERSITY
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the embodiments of the present invention is to provide a preparation process of ordered mesoporous (TiO2-Cu) nanocomposites by hydrothermal supercritical extraction, which aims to solve the problem that the traditional calcination method causes the pores of synthetic materials to collapse and the specific surface area to be greatly reduced.

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
  • Ordered meso-porous (TiO2-Cu) nanocomplex and its hydrothermal supercritical extraction preparation technology
  • Ordered meso-porous (TiO2-Cu) nanocomplex and its hydrothermal supercritical extraction preparation technology
  • Ordered meso-porous (TiO2-Cu) nanocomplex and its hydrothermal supercritical extraction preparation technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1: first adopt the hydrothermal method, put 60g of titanium tetrachloride and 2g of gold nitrate with a purity of 99.0% into a three-necked flask, and stir evenly with a GS122 type electronic constant speed stirrer; secondly, dodecyl trichloride Methyl ammonium bromide (30g), after mixing 160g distilled water and concentrated hydrochloric acid, slowly drop it into the three-necked flask through a separatory funnel, and control the pH value between 1-3. Titanium tetrachloride forms a "surfactant" through a hydrolysis reaction. -precipitation of inorganic matter; then, put 20g of "surfactant-inorganic matter" into a supercritical kettle, raise the temperature to 100°C at a heating rate of 2°C / min, and keep the pressure at 9MPa for 12h; then put the supercritical The kettle was cooled to room temperature, and the ordered mesoporous "TiO 2 -Cu" nanocomposites; finally, the obtained ordered mesoporous "TiO 2-Cu" nanocomposite was rinsed with distilled water for 4...

Embodiment 2

[0037] Embodiment 2: first adopt the hydrothermal method, put 60g of titanium tetrachloride and 2g of gold nitrate into the there-necked flask with a purity of 99.0%, and stir evenly with a GS122 type electronic constant speed stirrer; Methyl ammonium bromide (35g), after mixing 160g distilled water and concentrated hydrochloric acid, slowly drop into the there-necked flask through the separatory funnel, control the pH value between 1-3, titanium tetrachloride forms "surfactant" by hydrolysis reaction -precipitation of inorganic matter; then, put 20g of "surfactant-inorganic matter" into a supercritical kettle, raise the temperature to 100°C according to the heating rate of 2°C / min, and keep the pressure at 9MPa for 12h; then put the supercritical The kettle was cooled to room temperature, and the ordered mesoporous "TiO 2 -Cu" nanocomposites; finally, the obtained ordered mesoporous "TiO 2 -Cu" nanocomposite was rinsed with distilled water for 4 times. Its crystal form is an...

Embodiment 3

[0038] Embodiment 3: first adopt the hydrothermal method, put 60g of titanium tetrachloride and 2g of gold nitrate with a purity of 99.0% into a three-necked flask, and stir evenly with a GS122 type electronic constant speed stirrer; secondly, dodecyl trichloride Methyl ammonium bromide (28g), after mixing 160g distilled water and concentrated hydrochloric acid, slowly drip into the there-necked flask through the separatory funnel, control the pH value between 1-3, titanium tetrachloride forms "surfactant" by hydrolysis reaction -precipitation of inorganic matter; then, put 30g of "surfactant-inorganic matter" into a supercritical kettle, raise the temperature to 100°C according to the heating rate of 2°C / min, and keep the pressure at 9MPa for 12h; then put the supercritical The kettle was cooled to room temperature, and the ordered mesoporous "TiO 2 -Cu" nanocomposites; finally, the obtained ordered mesoporous "TiO 2 -Cu" nanocomposite was rinsed with distilled water for 4 t...

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
sizeaaaaaaaaaa
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses an ordered meso-porous (TiO2-Cu) nanocomplex and its preparation technology. The above ordered meso-porous (TiO2-Cu) composite nanomaterial is prepared through adopting a hydrothermal method and a supercritical extraction technique. The technology is characterized in that a surfactant is treated as a soft template and the supercritical extraction technique and the hydrothermal method are adopted to prepare the ordered meso-porous (TiO2-Cu) nanocomplex having a novel structure and good physical and chemical properties. The technology provides a new way for researching the application of meso-porous TiO2-doped photocatalytic materials. The technology has the advantages of simplicity and easy industrial production; and the prepared meso-porous nanocomplex has a large specific surface area and a uniform pore distribution.

Description

technical field [0001] The invention relates to an ordered mesoporous (TiO 2 -Cu) nanocomposite and hydrothermal supercritical extraction preparation process, belonging to the field of functional materials. Background technique [0002] TiO 2 Because of its biological and chemical inertness, no photocorrosion and chemical corrosion, and low price, it has been proved to be the most widely used photocatalyst. Due to TiO 2 The electron distribution of is characterized by the presence of a band gap between its conduction and valence bands. When illuminated, as long as the energy of the photon is equal to or exceeds the band gap energy of the semiconductor (hv≥E g ), the electrons can transition from the valence band to the conduction band, thereby generating conduction band electrons and valence band holes. Under the action of the electric field of the space charge layer, the free electrons in the conduction band quickly migrate to the surface of the semiconductor particles...

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 Applications(China)
IPC IPC(8): B01J23/72C02F1/30
Inventor 李佑稷胡文勇袁志忠
Owner JISHOU UNIVERSITY