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

Nano gold/SO2 mesoporous composite body and its preparing method

A technology of silica and composites, applied in the field of nanocomposite materials and their preparation, can solve the problems of pollution, inability to realize the adjustment of optical characteristics, high cost, etc., and achieve the effect of simple process, low cost and short time

Inactive Publication Date: 2005-08-03
INST OF SOLID PHYSICS ACAD SINICA
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this mesoporous complex can only be used as molecular-level electronic components. When used as functional components such as sensing and detection, it cannot achieve adjustable optical properties in a wide range of wavelengths; and its preparation method is targeted In addition, only this kind of mesoporous complex can be prepared, and there are also disadvantages of high preparation cost and pollution.

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
  • Nano gold/SO2 mesoporous composite body and its preparing method
  • Nano gold/SO2 mesoporous composite body and its preparing method
  • Nano gold/SO2 mesoporous composite body and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Place the prepared flaky silica mesoporous solid in a tetrachloroauric acid solution with a concentration of 5 mmol and soak for 12 days, then take out the soaked mesoporous solid, wash it with deionized water, and dry it at 70°C 14 hours, and finally it was annealed at 200°C for 2 hours to obtain figure 1 Curve 1 in figure 2 Figure (a) in and image 3 The nano-gold / silica mesoporous composite shown in the curve 6, its light absorption spectrum is as Figure 4 Curve 11.

Embodiment 2

[0019] Put the above-mentioned mesoporous solid in a tetrachloroauric acid solution with a concentration of 8 mmol and soak for 12 days, then wash the taken-out mesoporous solid with distilled water and dry it at 80°C for 15 hours, and finally remove it from 200°C in steps The temperature is raised from 50°C to 350°C, and kept at each temperature point for 2.5 hours to obtain the following figure 1 Curve 2 in figure 2 Figure (b) in and image 3 The nano-gold / silica mesoporous composite shown in the curve 7, its light absorption spectrum is as Figure 4 Curve 12.

Embodiment 3

[0021] The above-mentioned mesoporous solid was soaked in a tetrachloroauric acid solution with a concentration of 10 mmoles for 14 days, then the taken-out mesoporous solid was washed with deionized water and dried at 85°C for 15 hours, and finally it was removed from 200°C Raise the temperature from 75°C to 500°C with a step diameter of 75°C, and keep it warm at each temperature point for 3 hours (it can also be annealed at 500°C for 2 hours), and the following figure 1 Curve 3 in figure 2 Figure (c) in and image 3 The nano-gold / silica mesoporous composite shown in the curve 8, its light absorption spectrum is as follows Figure 4 Curve 13.

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
pore sizeaaaaaaaaaa
porosityaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The present invention is nano Au / SiO2 mesoporous composite and its preparation. The nano Au / SiO2 mesoporous composite consists of mesoporous SiO2 solid of specific surface area 500-600 sq m / g, porosity 55-65 % and pore size 2-10 nm; and nano Au particles in different shapes, distributed homogeneously inside the mesopores and with particle size 20-50 nm and length 1-7 microns. The nano Au / SiO2 mesoporous composite has specific surface area 36-480 sq m / g, porosity 40-50 %. The preparation of the composite includes the steps of sol-gel process to prepare the mesoporous SiO2 solid, soaking the solid inside acid solution of AuCl4, and annealing of the solid in 200-800 deg.c. The composite is optically adjustable in 500-1200 nm and may be used widely in light filter, chemical sensor, biological sensor, optical equipment, etc.

Description

technical field [0001] The invention relates to a nanocomposite material and a preparation method thereof, in particular to a nanometer gold / silicon dioxide mesoporous composite with adjustable optical properties and a preparation method thereof. Background technique [0002] The mesoporous complex formed by implanting heterogeneous nanoparticles into the pores of mesoporous solids has many new and excellent properties, and it has broad application prospects in new optical filters, chemical sensors, biosensors and optical devices. Therefore caused people's general concern, and want to obtain corresponding mesoporous composite body, once described a kind of " Preparation of silver / silicon dioxide mesoporous composites by pyrolysis", which uses the sol-gel method to prepare silica mesoporous solids, then soaks them in silver nitrate solution, and then takes them out for drying. Finally, it is heat-treated to obtain a silver / silicon dioxide mesoporous composite. However, this...

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): C09C3/06
Inventor 阚彩侠蔡伟平
Owner INST OF SOLID PHYSICS ACAD SINICA
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