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a honeycomb sno 2 /tio 2 Synthetic method of composite nanomaterial

A technology of nanomaterials and synthesis methods, which is applied in the field of synthesis of honeycomb SnO2/TiO2 composite nanomaterials, can solve the problems of complex steps and cumbersome procedures, and achieve the effects of high crystallization, strong operability, and easy promotion

Active Publication Date: 2017-11-14
CHINESE ACAD OF INSPECTION & QUARANTINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this method is that the steps are complicated and the procedures are cumbersome

Method used

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  • a honeycomb sno <sub>2</sub> /tio <sub>2</sub> Synthetic method of composite nanomaterial
  • a honeycomb sno <sub>2</sub> /tio <sub>2</sub> Synthetic method of composite nanomaterial
  • a honeycomb sno <sub>2</sub> /tio <sub>2</sub> Synthetic method of composite nanomaterial

Examples

Experimental program
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Embodiment 1

[0023] Stir 0.5mL of n-butyl titanate and 3mL of furfuryl alcohol on a magnetic stirrer for 0.5 hours, then take 3.5mL of 0.4g / mL SnCl 2 2H 2 The ethanol solution of O was stirred for 0.5 hours, and the resulting orange solution was transferred into a crucible, placed in a muffle furnace, and first raised to 90°C at a heating rate of 1°C / min and kept for 12 hours, and then at the same heating rate Raise the temperature to 400°C and keep it for 3 hours, and finally burn at 500°C for 12 hours. Such as figure 1 and figure 2 As shown, the obtained product is characterized by XRD, SEM, etc., and the SnO with honeycomb morphology 2 / TiO 2 Nanostructured material, the honeycomb diameter is about 300nm.

[0024] The above n-butyl titanate, furfuryl alcohol and SnCl 2 2H 2 The mass ratio of O is 1:3.8:4.

[0025] The honeycomb-shaped SnO synthesized in this example 2 / Ti O2 Composite nanomaterials can be directly synthesized into gas-sensing electrodes, and the obtained elec...

example 2

[0027] Stir 0.5mL n-butyl titanate and 3mL furfuryl alcohol on a magnetic stirrer for 0.5 hours, then take 7.875mL of SnCl with a concentration of 4g / mL 2 2H 2 The ethanol solution of O was stirred for 0.5 hours, and the resulting orange solution was transferred into a crucible, placed in a muffle furnace, and first raised to 90°C at a heating rate of 1°C / min and kept for 12 hours, and then at the same heating rate Raise the temperature to 400°C and keep it for 3 hours, and finally burn at 500°C for 12 hours. Such as image 3 and Figure 4 As shown, the obtained product is characterized by XRD, SEM, etc., and has a spherical SnO 2 / TiO 2 Nanostructured materials, about 200nm in diameter.

[0028] The above n-butyl titanate, furfuryl alcohol and SnCl 2 2H 2 The mass ratio of O is 1:3.8:9.

[0029] The honeycomb-shaped SnO synthesized in this example 2 / Ti O2 The composite nanomaterial can be directly synthesized into a gas-sensing electrode, and the obtained electrode...

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Abstract

The invention belongs to the technical field of inorganic advanced materials, and in particular relates to a method for synthesizing a honeycomb SnO2 / TiO2 composite nano material. The purpose of the invention is to provide the method for synthesizing the honeycomb SnO2 / TiO2 composite nano material. The honeycomb SnO2 / TiO2 composite nano material is synthesized by use of titanate and SnCl2. 2H2O as precursors and furfuryl alcohol as a structural template under high temperature burning conditions. By adopting of a burning reaction process, the method has the advantages of high safety, strong operability and easy popularization. The synthesized honeycomb SnO2 / TiO2 nano composite material has high crystallisation degree, and can be prepared directly into a gas sensing electrode, the obtained electrode can be used to detect formaldehyde in the air, and the detection limit can reach 0.1ppm.

Description

technical field [0001] The invention belongs to the technical field of inorganic advanced materials, in particular to a honeycomb SnO 2 / TiO 2 Synthetic methods of composite nanomaterials. technical background [0002] Among indoor pollutants, formaldehyde has become one of the most important indoor pollutants in China. Formaldehyde can cause damage to the respiratory system when the concentration is higher than several ppm. At the same time, formaldehyde is also a carcinogen. Establish a fast, reliable and accurate method Essential for controlling pollutants and health. Commonly used detection methods include spectrophotometry, chromatography, and electrochemical detection methods. However, the first two methods involve complicated sample pretreatment methods and relatively high costs, so they cannot be popularized in daily life. The formaldehyde detection kits used in the market generally adopt the electrochemical detection method. Among them, the semiconductor formalde...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G19/02B82Y30/00G01N27/26
CPCC01G19/02C01P2002/72C01P2004/03C01P2004/62C01P2004/82G01N27/26
Inventor 席广成李亚辉白桦
Owner CHINESE ACAD OF INSPECTION & QUARANTINE