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

Preparation method of titanate nano material uniformly loaded with elemental gold

A technology of uniform loading and nanomaterials, applied in the field of nanomaterials, can solve the problems of uneven size of metal particles, cumbersome preparation process, small specific surface area, etc., and achieve the effect of uniform size, simple process and large specific surface area.

Inactive Publication Date: 2020-09-08
CHINA UNIV OF GEOSCIENCES (WUHAN)
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the reported gold-supported nanomaterials have some shortcomings, such as: cumbersome preparation process, use of more organic reducing agents, non-uniform metal particle size, poor dispersion, and small specific surface area.
Therefore, how to simply and efficiently prepare simple gold-supported nanomaterials with large specific surface area remains a challenge.

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
  • Preparation method of titanate nano material uniformly loaded with elemental gold
  • Preparation method of titanate nano material uniformly loaded with elemental gold
  • Preparation method of titanate nano material uniformly loaded with elemental gold

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Pipette 2mL of 0.05 mol / L HAuCl 4 Add it to 200 μL of 1.5mol / L ethylenediamine, and pour 48mL of water to prepare the gold-ethylenediamine precursor; weigh 200mg of amorphous titanium dioxide and place it in 50mL of 10% ammonia solution at a temperature of 120°C React for 12 hours to prepare a titanate carrier; add the prepared titanate carrier to the gold-ethylenediamine precursor solution, stir thoroughly at 25°C for 20 hours, then centrifuge at 8000rpm for 3min, and centrifuge After washing, dry at 60° C. for 12 hours to obtain titanate nanomaterials evenly supported by elemental gold.

[0024] Example 1 The process flow chart for preparing elemental gold uniformly loaded titanate nanomaterials is shown in figure 1 .

[0025] Carry out scanning electron microscope characterization with the elemental gold uniformly loaded titanate nanomaterial prepared in Example 1, as figure 2 As shown in a, the material exhibits a uniformly dispersed and spherical morphology, an...

Embodiment 2

[0031] Pipette 2mL of 0.05 mol / L HAuCl 4 Add it into 300μL of 1.5mol / L ethylenediamine, and pour it into 50mL of water to prepare the gold-ethylenediamine precursor; weigh 224mg of amorphous titanium dioxide and place it in 50mL of 4mol / L sodium hydroxide solution, React under temperature conditions for 12 hours to prepare a titanate support; add the prepared titanate support to the gold-ethylenediamine precursor solution, fully stir at 25°C for 20 hours, and then centrifuge at 8000rpm After centrifugation for 3 minutes, wash and dry at 60° C. for 12 hours to obtain titanate nanomaterials evenly supported by elemental gold.

Embodiment 3

[0033] Pipette 2mL of 0.05 mol / L HAuCl 4 Add it to 180 μL of 1.5mol / L ethylenediamine, and pour it into 48mL of water to prepare the gold-ethylenediamine precursor; weigh 176mg of amorphous titanium dioxide and place it in 55mL of 10% ammonia solution at a temperature of 120°C React for 12 hours to prepare a titanate carrier; add the prepared titanate carrier to the gold-ethylenediamine precursor solution, stir thoroughly at 25°C for 20 hours, then centrifuge at 8000rpm for 3min, and centrifuge After washing, dry at 60° C. for 12 hours to obtain titanate nanomaterials evenly supported by elemental gold.

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
sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of a titanate nano material uniformly loaded with elemental gold. The method comprises the following steps of: adding tetrachloroauric acid into an ethylenediamine solution to prepare a gold-ethylenediamine precursor; adding amorphous titanium dioxide into an alkaline solution, and carrying out hydrothermal reaction at 120DEG C for 12 hours to obtain a titanate carrier; and mixing the gold-ethylenediamine precursor with the titanate carrier, fully stirring the substances uniformly, and performing centrifuging, washing and drying to obtain the titanate nano material uniformly loaded with elemental gold. The preparation method provided by the invention is simple in process and convenient to operate, does not need to additionally introduce a reducing agent, and can realize reduction preparation of elemental gold through a self-contained organic ligand; the material prepared by the method has a spherical flower-like morphology, and has the advantages of uniform gold particle size, stable loading, developed pore size and large specific surface area (246.1m<2> / g).

Description

technical field [0001] The invention relates to the technical field of nanometer materials, in particular to a preparation method of elemental gold uniformly loaded titanate nanomaterials. Background technique [0002] In recent years, noble metal (such as gold, platinum, palladium, etc.) nanomaterials have been widely used in many fields due to their unique optical properties, catalytic activity and significant quantum effects. Among them, gold nanoparticles have developed into a functional nanomaterial with very broad application prospects. The application fields involve catalysis, biomedicine, batteries, and environmental restoration. In general, the smaller the particle size, the higher its activity. At the same time, the surface energy of the elemental particles will increase significantly as the size of the elemental metal particles decreases, leading to serious aggregation of the elemental particles, thereby weakening its excellent effect. This phenomenon is particu...

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): C01G23/00B22F9/24B01J23/52B01J35/10B82Y40/00B82Y30/00
CPCC01G23/003B22F9/24B01J23/52B82Y40/00B82Y30/00B01J35/615
Inventor 李海涛高强王官帅
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)