CN106883829A - A kind of regulatable TiO2Composite aqueous nano-fluids of-Au and preparation method thereof - Google Patents
A kind of regulatable TiO2Composite aqueous nano-fluids of-Au and preparation method thereof Download PDFInfo
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- CN106883829A CN106883829A CN201710262104.3A CN201710262104A CN106883829A CN 106883829 A CN106883829 A CN 106883829A CN 201710262104 A CN201710262104 A CN 201710262104A CN 106883829 A CN106883829 A CN 106883829A
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- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
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Abstract
The invention provides a kind of regulatable TiO2Composite aqueous nano-fluids of-Au and preparation method thereof, the volume ratio (1 of the gold nano fluid by regulating and controlling titanium trichloride solution and different quality containing (0.006% ~ 0.05%):1~1:20) the compound of different-effect is realized.When the volume ratio of the gold nano fluid that titanium trichloride solution and mass fraction are 0.01% is 1:After being reacted 24 hours at 5,180 DEG C, the nano-fluid energy stable existence for being formed 15 days, the thermal conductivity factor of its thermal conductivity ratio water improves 48.37%, than the Au nano-fluids and TiO of one-component2Nano-fluid is respectively increased 16.01% and 35.15%.Composite aqueous Thermal Conductivity of Nanofluids prepared by the present invention is high, and suspension stability is good and process is simple, expands range of application of the nano-fluid in heat-exchange system.
Description
Technical field
The present invention relates to a kind of regulatable TiO2Composite aqueous nano-fluids of-Au and preparation method thereof, as a kind of high
Effect heat transferring medium is applied in field of heat exchange.
Technical background
Heat transmission equipment is widely used in oil refining, chemical industry, light industry, pharmacy, machinery, food as a kind of energy conversion device
In the middle of processing, power and atomic energy industry department.The application of heat transmission equipment is so extensive, and its heat transfer efficiency is directly influenced
The utilization rate of energy in whole system, and the heat conductivility of heat transfer medium be heat exchanger heat-transfer performance size it is decisive because
Element.So improve heat transfer medium heat conductivility, improve energy utilization rate, be only realize energy-saving and emission-reduction, environmental protection it is most main
Want approach.In field of heat transfer, the goal in research of nano-fluid is to obtain highest with minimum concentration and most stable of suspended particles
Possible heat transfer property.At present, the species of liquid heat-transfer medium is mainly based on water and ethylene glycol, and component is more single,
It is difficult to meet the condition that preferable nano-fluid should possess, such as：High heat conductance, low stickiness, good stability and compatibility,
And it is relatively cheap.Titanium dioxide has thermal conductivity factor higher, and heat transfer is good, is easy to get with nontoxic, low price practicality and raw material
Advantage, so prepare nano-fluid during nano titanium oxide is evenly spread to water, with improve system heat conductivility research very
It is valuable.Au nano-fluids thermal conductivity factor at room temperature is preferable, even if heat exchange property is also than other at very low concentrations
Working fluid is much better under concentration relatively high, has therefore suffered from extensive concern.But nm of gold is relatively expensive and has
Surface-active very high, being susceptible to reunite in the case that addition is relatively more even settles.Therefore, by TiO2Nano-fluid with
Water base Au nano-fluids are mixed to prepare composite Nano fluid so as to expand range of application by corresponding proportion.Composite Nano fluid due to
There is special contact interface, mutual physics and chemical property significant difference between its each component, thus constitute uniqueness, many
The hybrid system of function, Modulatory character energy.The preparation of nano-fluid is still in conceptual phase with characteristic, is entering commercial application
Need to optimize various factors before, the preparation of composite nano materials is combined with nano-fluid property to be likely to become strengthens new
One of effective way of heat-exchange working medium efficiency, so that new and effective nano-fluid is in solar energy thermal-power-generating, industrial afterheat recovery
Significant role is played Deng heat accumulation field of heat transfer.
The content of the invention
It is molten by changing titanium trichloride the invention aims to overcome above-mentioned one-component nano-fluid Shortcomings
Thermal conductivity factor is high to obtain for the volume ratio of liquid and water base Au nano-fluids, and suspension stability is good and composite Nano of process is simple
Fluid.
To realize the purpose of the present invention, technical scheme is as follows：
A kind of regulatable TiO2The composite aqueous nano-fluids of-Au：(1) Au nano-solutions are mixed with appropriate amount of deionized water, is stirred
Mix uniform and ultrasonic vibration and Au nano-fluids are obtained；(2) at normal temperatures, titanium trichloride solution is slowly dripped according to a certain volume
It is added in the Au nano-fluids of (1) formation, after stirring, is put into reactor, after a period of time of reaction at a certain temperature,
The solution for obtaining composite nanometer particle for 3 times is respectively washed with deionized water and alcohol, by gained solution drying after, obtain TiO2—Au
Composite nanometer particle；(3) TiO in step (2)2- Au composite nanometer particles are added in deionized water, and ultrasonic vibration is obtained
Composite Nano fluid.
Being shaped as Au particles of the present invention is spherical, and particle diameter is 6 ~ 10nm.
The concentration of Au nano-solutions used by step (1) of the present invention is 0.2g/L.
The ultrasonic vibration time is 1 ~ 5 hour in step (1) of the present invention.
In being obtained in step (1) of the present invention in Au nano-fluids the mass fraction of Au nano particles for 0.006% ~
0.05%。
Titanium trichloride solution Ti content is 14.5% in step (2) of the present invention.
Titanium trichloride solution and the volume ratio of Au nano-fluids are 1 in step (2) of the present invention:1~1:20.
Mixing time is 30 ~ 90 minutes in step (2) of the present invention.
Step (2) reaction temperature of the present invention is 160 ~ 200 DEG C, 24 ~ 36 hours reaction time.Drying temperature is 80
℃。
TiO is formed in step (2) of the present invention2Being shaped as nano particle is bar-shaped (length is 150nm ~ 300nm).It is logical
Controlling reaction temperature and time is spent to regulate and control generation TiO2The length of nanometer rods.
Brief description of the drawings
Fig. 1 is the TiO formed in step (3)2The composite aqueous nano-fluid schematic diagrames of-Au.Wherein：1, gold nano
Grain；2, TiO2Nanometer rods；3, hydrone.
Specific embodiment
Embodiment 1
The Au nano-solutions of 0.2g/L are mixed with deionized water so that Au nano-particle contents are 0.006%, and ultrasonic vibration 3 is small
When Au nano-fluids are obtained.Under normal temperature, titanium trichloride solution and this nano-fluid are pressed 1:3 volume ratio mixing, stirring 20
Minute.After uniform, it is put into reactor, 24 hours is reacted at 160 DEG C.Resulting solution water and alcohol dry after respectively washing 3 times
It is dry.Deionized water is added, Au nano-particle contents is still maintained 0.006%.The nano-fluid energy stable existence 34 for being formed
My god, the thermal conductivity factor of its thermal conductivity ratio water improves 28.51%, than the Au nano-fluids and TiO of one-component homogenous quantities fraction2
Nano-fluid is respectively increased 6.73% and 15.78%.
Embodiment 2
The Au nano-solutions of 0.2g/L are mixed with deionized water so that Au nano-particle contents are 0.006%, and ultrasonic vibration 3 is small
When Au nano-fluids are obtained.Under normal temperature, titanium trichloride solution and this nano-fluid are pressed 1:3 volume ratio mixing, stirring 20
Minute.After uniform, it is put into reactor, 24 hours is reacted at 200 DEG C.Resulting solution water and alcohol dry after respectively washing 3 times
It is dry.Deionized water is added, Au nano-particle contents is still maintained 0.006%.The nano-fluid energy stable existence 27 for being formed
My god, the thermal conductivity factor of its thermal conductivity ratio water improves 33.53%, than the Au nano-fluids and TiO of one-component homogenous quantities fraction2
Nano-fluid is respectively increased 8.69% and 21.38%.
Embodiment 3
The Au nano-solutions of 0.2g/L are mixed with deionized water so that Au nano-particle contents are 0.01%, and ultrasonic vibration 5 is small
When Au nano-fluids are obtained.Under normal temperature, titanium trichloride solution and this nano-fluid are pressed 1:5 volume ratio mixing, stirring 40
Minute.After uniform, it is put into reactor, 24 hours is reacted at 180 DEG C.Resulting solution water and alcohol dry after respectively washing 3 times
It is dry.Deionized water is added, makes Au nano-particle contents to be still maintained 0.01%.The nano-fluid energy stable existence 15 for being formed
My god, the thermal conductivity factor of its thermal conductivity ratio water improves 48.37%, than the Au nano-fluids and TiO of one-component2Nano-fluid point
Indescribably high 16.01% and 35.15%.
Embodiment 4
The Au nano-solutions of 0.2g/L are mixed with deionized water so that Au nano-particle contents are 0.05%, and ultrasonic vibration 7 is small
When Au nano-fluids are obtained.Under normal temperature, titanium trichloride solution and this nano-fluid are pressed 1:7 volume ratio mixing, stirring 60
Minute.After uniform, it is put into reactor, 36 hours is reacted at 200 DEG C.Resulting solution water and alcohol dry after respectively washing 3 times
It is dry.Deionized water is added, Au nano-particle contents is still maintained 0.05%.The nano-fluid energy stable existence for being formed 20 days,
The thermal conductivity factor of its thermal conductivity ratio water improves 50.53%, than the Au nano-fluids and TiO of one-component2Nano-fluid is carried respectively
High 23.56% and 39.55%.
Claims (10)
1. a kind of regulatable TiO2The composite aqueous nano-fluid preparation methods of-Au, it is characterised in that comprise the following steps:
(1) Au nano-solutions are mixed with appropriate amount of deionized water, ultrasonic vibration is obtained Au nano-fluids；(2) at normal temperatures, by one
The titanium trichloride solution for determining volume is slowly dropped in the Au nano-fluids of (1) formation, according to a certain volume example mixing, and stirring is equal
After even, it is put into reactor, after a period of time of reaction at a certain temperature, respectively washes 3 times with deionized water and alcohol and be combined
The solution of nano particle, by the drying of the gained solution after, obtain TiO2- Au composite nanometer particles；(3) in step (2)
TiO2- Au composite nanometer particles are added in deionized water, and ultrasonic vibration is obtained composite Nano fluid.
2. the regulatable TiO according to claims 12The composite aqueous nano-fluids of-Au, it is characterised in that described multiple
Close the mixture that nano-fluid additive is titanium dioxide and gold grain.
3. the regulatable TiO according to claims 22The composite aqueous nano-fluids of-Au, it is characterised in that the Au
Being shaped as particle is spherical, and particle diameter is 6 ~ 10nm;The concentration of Au nano-solutions used is 0.2g/L.
4. the regulatable TiO according to claims 12The composite aqueous nano-fluids of-Au, it is characterised in that the step
Suddenly the ultrasonic vibration time is 1 ~ 5 hour in (1).
5. the regulatable TiO according to claims 12The composite aqueous nano-fluids of-Au, it is characterised in that the step
Suddenly the mass fraction of Au nano particles is 0.006% ~ 0.05% in Au nano-fluids during (1) is obtained.
6. the regulatable TiO according to claims 12The composite aqueous nano-fluids of-Au, it is characterised in that the step
Suddenly titanium trichloride solution Ti content is 14.5% in (2).
7. the regulatable TiO according to claims 12The composite aqueous nano-fluids of-Au, it is characterised in that the step
Suddenly titanium trichloride solution and the volume ratio of Au nano-fluids are 1 in (2):1~1:20.
8. the regulatable TiO according to claims 12The composite aqueous nano-fluids of-Au, it is characterised in that the step
Suddenly mixing time is 30 ~ 90 minutes in (2).
9. the regulatable TiO according to claims 12The composite aqueous nano-fluids of-Au, it is characterised in that the step
Suddenly (2) reaction temperature is 160 ~ 200 DEG C, and 24 ~ 36 hours reaction time, drying temperature is 80 DEG C.
10. the regulatable TiO according to claims 12The composite aqueous nano-fluid preparation methods of-Au, its feature exists
In formation TiO in the step (2)2Being shaped as nano particle is bar-shaped (length is 150nm ~ 300nm), by controlling to react
Temperature and time come regulate and control generation TiO2The length of nanometer rods.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710262104.3A CN106883829B (en) | 2017-04-20 | 2017-04-20 | A kind of regulatable TiO2Composite aqueous nano-fluid of-Au and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710262104.3A CN106883829B (en) | 2017-04-20 | 2017-04-20 | A kind of regulatable TiO2Composite aqueous nano-fluid of-Au and preparation method thereof |
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| CN106883829A true CN106883829A (en) | 2017-06-23 |
| CN106883829B CN106883829B (en) | 2019-10-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108529610A (en) * | 2018-03-08 | 2018-09-14 | 济南大学 | A kind of GO-TiO2Nanometer rods composite nanometer particle and preparation method thereof |
| CN109999773A (en) * | 2019-04-18 | 2019-07-12 | 河南师范大学 | A kind of preparation method of efficient liquid phase TiO2 photochemical catalyst |
| US11866610B2 (en) | 2022-01-31 | 2024-01-09 | Kuwait Institute For Scientific Research | Tablet-based method of producing nano/micro particle water suspensions and carbon dioxide gas |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103102871A (en) * | 2011-11-15 | 2013-05-15 | 黄彦豪 | Heat transfer efficiency improving accelerator |
| CN104229878A (en) * | 2014-09-02 | 2014-12-24 | 陈立晓 | Preparation method of rutile crystal-form titanium dioxide nanorod |
-
2017
- 2017-04-20 CN CN201710262104.3A patent/CN106883829B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103102871A (en) * | 2011-11-15 | 2013-05-15 | 黄彦豪 | Heat transfer efficiency improving accelerator |
| CN104229878A (en) * | 2014-09-02 | 2014-12-24 | 陈立晓 | Preparation method of rutile crystal-form titanium dioxide nanorod |
Non-Patent Citations (1)
| Title |
|---|
| 张世英等: "《一维氧化钛纳米材料》", 30 September 2015, 中南大学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108529610A (en) * | 2018-03-08 | 2018-09-14 | 济南大学 | A kind of GO-TiO2Nanometer rods composite nanometer particle and preparation method thereof |
| CN108529610B (en) * | 2018-03-08 | 2021-03-02 | 济南大学 | GO-TiO2Nano-rod composite nano-particle and preparation method thereof |
| CN109999773A (en) * | 2019-04-18 | 2019-07-12 | 河南师范大学 | A kind of preparation method of efficient liquid phase TiO2 photochemical catalyst |
| US11866610B2 (en) | 2022-01-31 | 2024-01-09 | Kuwait Institute For Scientific Research | Tablet-based method of producing nano/micro particle water suspensions and carbon dioxide gas |
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Inventor after: Zhao Weilin Inventor after: Li Yue Inventor after: Li Jinkai Inventor before: Li Yue Inventor before: Zhao Weilin Inventor before: Li Jinkai |
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