CN101571504A - Noble metal doped SnO2 composite material and preparation method thereof - Google Patents
Noble metal doped SnO2 composite material and preparation method thereof Download PDFInfo
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- CN101571504A CN101571504A CNA2009100721841A CN200910072184A CN101571504A CN 101571504 A CN101571504 A CN 101571504A CN A2009100721841 A CNA2009100721841 A CN A2009100721841A CN 200910072184 A CN200910072184 A CN 200910072184A CN 101571504 A CN101571504 A CN 101571504A
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Abstract
The invention provides a noble metal doped SnO2 composite material and a preparation method thereof. The method comprises: (1) SnO2 superfine powder is mixed with noble metal powder with mass fraction ranging from 0.05 to 1.21, deionized water with mass fraction ranging from 20 to 40 percent is added to and stirred with the mixture into slurry, and the noble metal is one of or the mixture of two or more of Pd, Au, Cu and La or Ce; (2) the slurry is evenly coated on a ceramic substrate and is dried in a baking oven; and (3) the ceramic substrate is put into a muffle furnace and is sintered for 1 hour at the temperature from 600 to 700 DEG C, and after the room temperature is realized by furnace cooling, the noble metal doped SnO2 composite material can be obtained. Compared with common SnO2 materials, the noble metals doped in the invention, such as Pd, Au, Cu, La and Ce, and the like, can reduce the activation energy of adsorption of chemical gas, and can obviously improve the sensitivity and the response time of the SnO2 material.
Description
(1) technical field
What the present invention relates to is a kind of compound substance, the present invention also relates to a kind of preparation method of compound substance.A kind of SnO of doped precious metal specifically
2Compound substance and preparation method thereof.
(2) background technology
SnO
2Be the main raw material(s) of gas sensor, but the SnO that uses at present
2The face shaping of raw material and granularity are all not ideal enough, and be bigger to the influence of the gas-sensitive property of element.
(3) summary of the invention
The object of the present invention is to provide the SnO of short doped precious metal of a kind of highly sensitive, response time
2Compound substance.The present invention also aims to provide a kind of and can improve SnO
2The SnO of the doped precious metal of the performance of material
2The preparation method of compound substance.
The object of the present invention is achieved like this:
The SnO of doped precious metal of the present invention
2Compound substance is to be the assorted noble metal of 0.05-0.8 and the SnO of surplus by massfraction
2Make, described noble metal is one or both several two or more potpourris among Pd, Au, Cu, La or the Ce.
The SnO of doped precious metal of the present invention
2Compound substance is to adopt such method preparation:
1, with SnO
2Superfine powder and massfraction are that the noble metal powder of 0.05-1.21 mixes, and adding massfraction is the deionized water of 20-40%, stirs into mud, and described noble metal is one or both several two or more potpourris among Pd, Au, Cu, La or the Ce;
2, mud evenly is coated on the ceramic substrate, at the baking oven inner drying;
3, ceramic substrate is put into muffle furnace,,, obtain the SnO of doped precious metal with the stove cool to room temperature 600-700 ℃ sintering temperature 1 hour
2Compound substance.
With common SnO
2Material is compared, doping Pd of the present invention, and Au, Cu, noble metals such as La and Ce can reduce the activation energy of adsorption of chemical gas, significantly improve SnO
2The sensitivity of material and response time, for example: Au mixes and has not only improved SnO
2To the sensitivity of toluene gas, also has good selectivity in the low volume fraction scope; Pt mixes can improve SnO
2The gas-sensitive property of material broadens the operation temperature area of element.
The present invention is with ultra-fine SnO
2Powder is a base stock, adopts metal-doped mode modification SnO
2The performance of material makes the SnO of acquisition
2Compound substance has CO, CH
4And H
2Measuring ability etc. many gases.
(4) description of drawings
Accompanying drawing is the SnO that adopts the doped precious metal that method of the present invention obtains
2Performance of composites relatively.
(5) embodiment
For example the present invention is done in more detail below and describes:
Embodiment one: with the Pd of 0.3 part of mass fraction and 99.7 parts SnO
2Powder; Adding massfraction is the deionized water of 20-40%, stirs into mud; Mud evenly is coated on ceramic substrate, at the baking oven inner drying; Ceramic substrate is put into muffle furnace,,, obtain the SnO of doped precious metal Pd with the stove cool to room temperature 600-700 ℃ sintering temperature 1 hour
2Compound substance.
Embodiment two: with the Au of 0.05 part of mass fraction and 99.95 parts SnO
2Powder; Adding massfraction is the deionized water of 20-40%, stirs into mud; Mud evenly is coated on ceramic substrate, at the baking oven inner drying; Ceramic substrate is put into muffle furnace,,, obtain the SnO of doped precious metal Au with the stove cool to room temperature 600-700 ℃ sintering temperature 1 hour
2Compound substance.
Embodiment three: with the Cu of 0.13 part of mass fraction, 0.42 part Sb and 99.45 parts SnO
2Powder; Adding massfraction is the deionized water of 20-40%, stirs into mud; Mud evenly is coated on ceramic substrate, at the baking oven inner drying; Ceramic substrate is put into muffle furnace,,, obtain the SnO of doped precious metal Cu, Sb with the stove cool to room temperature 600-700 ℃ sintering temperature 1 hour
2Compound substance.
Embodiment four: with the La of 0.42 part of mass fraction, 0.3 part Pb and 99.28 parts SnO
2Powder; Adding massfraction is the deionized water of 20-40%, stirs into mud; Mud evenly is coated on ceramic substrate, at the baking oven inner drying; Ceramic substrate is put into muffle furnace,,, obtain the SnO of doped precious metal La, Pb with the stove cool to room temperature 600-700 ℃ sintering temperature 1 hour
2Compound substance.
Embodiment five: with the Cc of 0.8 part of mass fraction, 0.41 part Sb and 98.79 parts SnO
2Powder; Adding massfraction is the deionized water of 20-40%, stirs into mud; Mud evenly is coated on ceramic substrate, at the baking oven inner drying; Ceramic substrate is put into muffle furnace,,, obtain the SnO of doped precious metal Ce, Sb with the stove cool to room temperature 600-700 ℃ sintering temperature 1 hour
2Compound substance.
Embodiment six: present embodiment is on the basis of embodiment one to five, and the massfraction of deionized water is 30%.
Embodiment seven: present embodiment is on the basis of embodiment one to seven, and sintering temperature is selected 620-680 ℃.
Embodiment eight: present embodiment is on the basis of embodiment seven, and sintering temperature is selected 640-660 ℃.
Embodiment nine: present embodiment is on the basis of embodiment eight, and sintering temperature is selected 650 ℃.
Claims (9)
1, a kind of SnO of doped precious metal
2Compound substance is characterized in that: by massfraction is the assorted noble metal of 0.05-0.8 and the SnO of surplus
2Make, described noble metal is one or both several two or more potpourris among Pd, Au, Cu, La or the Ce.
2, a kind of SnO of doped precious metal
2The preparation method of compound substance is characterized in that:
(1) with SnO
2Superfine powder and massfraction are that the noble metal powder of 0.05-1.21 mixes, and adding massfraction is the deionized water of 20-40%, stirs into mud, and described noble metal is one or both several two or more potpourris among Pd, Au, Cu, La or the Ce;
(2) mud evenly is coated on the ceramic substrate, at the baking oven inner drying;
(3) ceramic substrate is put into muffle furnace,,, obtain the SnO of doped precious metal with the stove cool to room temperature 600-700 ℃ sintering temperature 1 hour
2Compound substance.
3, the SnO of doped precious metal according to claim 1
2The preparation method of compound substance is characterized in that: described noble metal is the Pd of 0.3 part of mass fraction.
4, the SnO of doped precious metal according to claim 1
2The preparation method of compound substance is characterized in that: described noble metal is the Au of 0.05 part of mass fraction.
5, the SnO of doped precious metal according to claim 1
2The preparation method of compound substance is characterized in that: described noble metal is the Cu of 0.13 part of mass fraction and 0.42 part Sb.
6, the SnO of doped precious metal according to claim 1
2The preparation method of compound substance is characterized in that: described noble metal is the La of 0.42 part of mass fraction and 0.3 part Pb.
7, according to the SnO of any one described doped precious metal of claim 2-6
2The preparation method of compound substance is characterized in that: the massfraction of described deionized water is 30%.
8, the SnO of doped precious metal according to claim 7
2The preparation method of compound substance is characterized in that: described sintering temperature is selected 620-680 ℃.
9, the SnO of doped precious metal according to claim 8
2The preparation method of compound substance is characterized in that: described sintering temperature is selected 650 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100721841A CN101571504A (en) | 2009-06-04 | 2009-06-04 | Noble metal doped SnO2 composite material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100721841A CN101571504A (en) | 2009-06-04 | 2009-06-04 | Noble metal doped SnO2 composite material and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572170A (en) * | 2015-12-10 | 2016-05-11 | 郑州大学 | SnO2-based hotwire type semiconductor gas sensor with environment temperature and humidity self-compensation ability |
| CN105911105A (en) * | 2016-04-26 | 2016-08-31 | 武汉大学 | CO sensing material of SnO2 doped catalyst and preparation method and application of CO sensing material |
| CN108120747A (en) * | 2017-11-30 | 2018-06-05 | 苏州慧闻纳米科技有限公司 | The preparation method of tin dioxide gas sensor and CO gas sensor system |
| CN108663420A (en) * | 2018-05-02 | 2018-10-16 | 东北大学 | The methane gas sensor and preparation method of tin mud supported palladium in a kind of tin plating technique |
| CN109142465A (en) * | 2018-05-09 | 2019-01-04 | 安徽大学 | A kind of preparation method of the cerium dopping stannic oxide sensing material of low temperature detection formaldehyde |
| CN110118805A (en) * | 2019-04-02 | 2019-08-13 | 湖北大学 | A kind of SnO based on Pt modification2Nanometer rods sensor and preparation method thereof and application |
| CN110274934A (en) * | 2018-03-14 | 2019-09-24 | 全球能源互联网研究院有限公司 | A kind of gas sensitive and preparation method thereof |
| CN111982981A (en) * | 2020-08-17 | 2020-11-24 | 合肥微纳传感技术有限公司 | SnO (stannic oxide)2Gas-sensitive material, preparation method and application thereof |
-
2009
- 2009-06-04 CN CNA2009100721841A patent/CN101571504A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572170A (en) * | 2015-12-10 | 2016-05-11 | 郑州大学 | SnO2-based hotwire type semiconductor gas sensor with environment temperature and humidity self-compensation ability |
| CN105572170B (en) * | 2015-12-10 | 2017-12-29 | 郑州大学 | SnO with environment epidemic disaster self compensation ability2Base hot wire type semiconductor gas sensor |
| CN105911105A (en) * | 2016-04-26 | 2016-08-31 | 武汉大学 | CO sensing material of SnO2 doped catalyst and preparation method and application of CO sensing material |
| CN105911105B (en) * | 2016-04-26 | 2018-08-21 | 武汉大学 | SnO2CO sensing materials of doped catalyst and its preparation method and application |
| CN108120747A (en) * | 2017-11-30 | 2018-06-05 | 苏州慧闻纳米科技有限公司 | The preparation method of tin dioxide gas sensor and CO gas sensor system |
| CN108120747B (en) * | 2017-11-30 | 2020-10-30 | 江苏智闻智能传感科技有限公司 | Preparation method of tin dioxide-based gas sensitive element and carbon monoxide gas sensor system |
| CN110274934A (en) * | 2018-03-14 | 2019-09-24 | 全球能源互联网研究院有限公司 | A kind of gas sensitive and preparation method thereof |
| CN108663420A (en) * | 2018-05-02 | 2018-10-16 | 东北大学 | The methane gas sensor and preparation method of tin mud supported palladium in a kind of tin plating technique |
| CN108663420B (en) * | 2018-05-02 | 2019-12-03 | 东北大学 | The methane gas sensor and preparation method of tin mud supported palladium in a kind of tin plating technique |
| CN109142465A (en) * | 2018-05-09 | 2019-01-04 | 安徽大学 | A kind of preparation method of the cerium dopping stannic oxide sensing material of low temperature detection formaldehyde |
| CN110118805A (en) * | 2019-04-02 | 2019-08-13 | 湖北大学 | A kind of SnO based on Pt modification2Nanometer rods sensor and preparation method thereof and application |
| CN111982981A (en) * | 2020-08-17 | 2020-11-24 | 合肥微纳传感技术有限公司 | SnO (stannic oxide)2Gas-sensitive material, preparation method and application thereof |
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Application publication date: 20091104 |