CN109718755A - A kind of hydro-thermal charcoal doping zinc-oxide photochemical catalyst - Google Patents
A kind of hydro-thermal charcoal doping zinc-oxide photochemical catalyst Download PDFInfo
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- CN109718755A CN109718755A CN201711029257.XA CN201711029257A CN109718755A CN 109718755 A CN109718755 A CN 109718755A CN 201711029257 A CN201711029257 A CN 201711029257A CN 109718755 A CN109718755 A CN 109718755A
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Abstract
The invention belongs to photocatalyst technology fields, are related to a kind of photochemical catalyst of hydro-thermal charcoal doping zinc-oxide.This method will improve the photocatalysis performance of existing photocatalyst of zinc oxide.Preparation method is to take each raw material: 75-85 parts of Zinc diacetate dihydrate, 25-7 parts of hydro-thermal charcoal, 5-8 parts of urea according to following weight ratio；Zinc diacetate dihydrate is dissolved in deionized water, the solution that concentration is 0.01-0.05mol/L is made into, hydro-thermal charcoal is added thereto, continual ultrasonic 10-60min obtains mixing liquid A；Liquid A is displayed into 8-36h；Urea ultrasound 10-60min is added into liquid A, obtains mixed liquid B；Liquid B is transferred in reaction kettle, seals, keeps the temperature 1-4h under the conditions of 100-150 DEG C, to taking out content after reaction, filtering and drying at 60 DEG C, obtained gray solid is catalyst.The photochemical catalyst of the invention photocatalysis performance compared with commercially available zinc oxide has a distinct increment.
Description
Technical field
The present invention relates to a kind of photochemical catalysts, and in particular to a kind of hydro-thermal charcoal doping zinc-oxide photochemical catalyst.
Background technique
Zinc oxide is a kind of common photochemical catalyst, it is low in cost, preparation method is simple, photocatalysis performance is good.But
It is that in use, the compound of photo-generate electron-hole pair can occur for zinc oxide, photocatalysis efficiency is reduced, so that in cost
It rises, limits its application.
Be in recent years the photocatalysis efficiency for improving zinc oxide, increase its stability in use, researcher by infusion process,
Carbon nanotube, graphene etc. are had the material doped of the characteristics such as specific surface area is high, conducts electricity very well by the even precipitation method, hydro-thermal method etc.
In zinc oxide.It is tested through researcher, the zinc oxide after doping has on photocatalysis performance larger compared to commercially available zinc oxide
Promotion.But the preparation process of these carrier materials is more complex at present, price is higher, affects the market application of catalyst.
Therefore it needs to develop a kind of dopant material cheap, of good performance.
Hydro-thermal charcoal, using carbonaceous organic material as raw material, using water as medium, is made under certain temperature and pressure in sealing container
Standby Carbon Materials out.Hydro-thermal charcoal has preferable adsorptivity, electric conductivity and thermal stability, and from a wealth of sources, cheap,
It is ideal carrier material, therefore hydro-thermal charcoal is entrained in the photocatalysis performance that zinc oxide is improved in zinc oxide by the present invention.
Summary of the invention
A kind of hydro-thermal charcoal doping zinc-oxide photochemical catalyst, preparation method are to take each raw material: two water according to following weight ratio
Close zinc acetate 75-85 parts, 25-7 parts of hydro-thermal charcoal, 5-8 parts of urea；Preparation method includes the following steps:
(1) Zinc diacetate dihydrate is dissolved in deionized water, is made into the solution that concentration is 0.01-0.05mol/L, Xiang Qi
Middle addition hydro-thermal charcoal, continual ultrasonic 10-60min obtain mixing liquid A；
(2) liquid A is displayed into 8-36h；
(3) urea ultrasound 10-60min is added into liquid A, obtains mixed liquid B
(4) liquid B is transferred in reaction kettle, seals, 1-4h is kept the temperature under the conditions of 100-150 DEG C, to take after reaction
Content out is filtered and is dried at 60 DEG C, and obtained gray solid is catalyst.
Specific embodiment
Technical solution of the present invention be not limited to it is set forth below lift to obtain specific embodiment, further include each specific embodiment it
Between any combination.
Specific embodiment 1:
A kind of preparation method of hydro-thermal charcoal doping zinc-oxide photochemical catalyst takes each raw material: two hydrations according to following weight ratio
Zinc acetate 0.30g, hydro-thermal charcoal 0.04g, urea 0.03g；Preparation method includes the following steps:
(1) Zinc diacetate dihydrate is dissolved in deionized water, be made into concentration be 0.03mol/L solution, thereto plus
Enter hydro-thermal charcoal, continual ultrasonic 30min obtains mixing liquid A；
(2) liquid A is displayed into 12h；
(3) urea ultrasound 30min is added into liquid A, obtains mixed liquid B
(4) liquid B is transferred in reaction kettle, seals, 1h is kept the temperature under the conditions of 100 DEG C, to take out content after reaction
Object is filtered and is dried at 60 DEG C, and obtained gray solid is catalyst.
Specific embodiment 2:
A kind of preparation method of hydro-thermal charcoal doping zinc-oxide photochemical catalyst takes each raw material: two hydrations according to following weight ratio
Zinc acetate 0.30g, hydro-thermal charcoal 0.05g, urea 0.03g；Preparation method includes the following steps:
(1) Zinc diacetate dihydrate is dissolved in deionized water, be made into concentration be 0.03mol/L solution, thereto plus
Enter hydro-thermal charcoal, continual ultrasonic 30min obtains mixing liquid A；
(2) liquid A is displayed into 14h；
(3) urea ultrasound 40min is added into liquid A, obtains mixed liquid B
(4) liquid B is transferred in reaction kettle, seals, 2h is kept the temperature under the conditions of 140 DEG C, to take out content after reaction
Object is filtered and is dried at 60 DEG C, and obtained gray solid is catalyst.
Specific embodiment 3: a kind of preparation method of hydro-thermal charcoal doping zinc-oxide photochemical catalyst, according to following weight ratio
Take each raw material: Zinc diacetate dihydrate 0.30g, hydro-thermal charcoal 0.06g, urea 0.03g；Preparation method includes the following steps:
(1) Zinc diacetate dihydrate is dissolved in deionized water, be made into concentration be 0.03mol/L solution, thereto plus
Enter hydro-thermal charcoal, continual ultrasonic 30min obtains mixing liquid A；
(2) liquid A is displayed into 16h；
(3) urea ultrasound 50min is added into liquid A, obtains mixed liquid B
(4) liquid B is transferred in reaction kettle, seals, 2h is kept the temperature under the conditions of 150 DEG C, to take out content after reaction
Object is filtered and is dried at 60 DEG C, and obtained gray solid is catalyst.
Specific embodiment 4: a kind of preparation method of hydro-thermal charcoal doping zinc-oxide photochemical catalyst, according to following weight ratio
Take each raw material: Zinc diacetate dihydrate 0.40g, hydro-thermal charcoal 0.05g, urea 0.03g；Preparation method includes the following steps:
(1) Zinc diacetate dihydrate is dissolved in deionized water, be made into concentration be 0.04mol/L solution, thereto plus
Enter hydro-thermal charcoal, continual ultrasonic 30min obtains mixing liquid A；
(2) liquid A is displayed into 18h；
(3) urea ultrasound 60min is added into liquid A, obtains mixed liquid B
(4) liquid B is transferred in reaction kettle, seals, 4h is kept the temperature under the conditions of 150 DEG C, to take out content after reaction
Object is filtered and is dried at 60 DEG C, and obtained gray solid is catalyst.
The photocatalysis of catalyst is tested: will pass through commercial nano zinc oxide photocatalyst and various embodiments of the present invention system below
Standby photochemical catalyst compares the degradation rate of methylene blue, and measurement result is as shown in the table:
Photochemical catalyst prepared by each embodiment and commercially available photocatalyst of zinc oxide are weighed into 0.5g respectively, are put into 500mL
Concentration is the methylene blue simulated water sample of 20mg/L, in light-catalyzed reaction instrument, using 200w high-pressure sodium lamp as light source, reacts 2h
Afterwards, using the concentration of ultraviolet-uisible spectrophotometer measurement water Methylene Blue, photocatalyst for degrading rate is calculated
As seen from table, the photocatalytic activity with higher of photochemical catalyst prepared by various embodiments of the present invention is much higher than mesh
Preceding commercial product, has good market prospects.
Claims (6)
1. a kind of hydro-thermal charcoal doping zinc-oxide photochemical catalyst, preparation method is that each raw material is taken according to following weight ratio: two hydrations
75-85 parts of zinc acetate, 25-7 parts of hydro-thermal charcoal, 5-8 parts of urea；Preparation method includes the following steps:
(1) Zinc diacetate dihydrate is dissolved in deionized water, be made into concentration be 0.01-0.05mol/L solution, thereto plus
Enter hydro-thermal charcoal, continual ultrasonic 10-60min obtains mixing liquid A；
(2) liquid A is displayed into 8-36h；
(3) urea ultrasound 10-60min is added into liquid A, obtains mixed liquid B
(4) liquid B is transferred in reaction kettle, seals, keeps the temperature 1-4h under the conditions of 100-150 DEG C, in taking out after reaction
It is tolerant, it filters and is dried at 60 DEG C, obtained gray solid is catalyst.
2. hydro-thermal charcoal doping zinc-oxide photochemical catalyst according to claim 1, it is characterised in that: with Zinc oxide doped water
Hot charcoal is as made from holocellulose.
3. the preparation method of hydro-thermal charcoal doping zinc-oxide photochemical catalyst according to claim 1, it is characterised in that: step
(1) solution concentration of the Zinc diacetate dihydrate is 0.03-0.05mol/L.
4. the preparation method of hydro-thermal charcoal doping zinc-oxide photochemical catalyst according to claim 1, it is characterised in that: step
(1) the continual ultrasonic time is 40-60min.
5. the preparation method of hydro-thermal charcoal doping zinc-oxide photochemical catalyst according to claim 1, it is characterised in that: step
(2) the liquid assembly time is 12-24h.
6. the preparation method of hydro-thermal charcoal doping zinc-oxide photochemical catalyst according to claim 1, it is characterised in that: step
(4) reaction temperature is 120-140 DEG C, time 2-4h.
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| CN201711029257.XA CN109718755A (en) | 2017-10-30 | 2017-10-30 | A kind of hydro-thermal charcoal doping zinc-oxide photochemical catalyst |
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| CN201711029257.XA CN109718755A (en) | 2017-10-30 | 2017-10-30 | A kind of hydro-thermal charcoal doping zinc-oxide photochemical catalyst |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148047A (en) * | 2014-08-31 | 2014-11-19 | 华东理工大学 | Macro preparation method for carbon doped zinc oxide-based visible-light catalyst |
| CN104998632A (en) * | 2015-07-15 | 2015-10-28 | 江苏大学 | Liquid phase ultrasonic-assisted method for preparing graphene-doped zinc oxide |
| CN106362800A (en) * | 2016-08-11 | 2017-02-01 | 广西南宁胜祺安科技开发有限公司 | Graphene-doped zinc oxide photocatalyst |
| CN106976855A (en) * | 2016-01-15 | 2017-07-25 | 东北林业大学 | A kind of preparation method of holocellulose hydro-thermal charcoal |
-
2017
- 2017-10-30 CN CN201711029257.XA patent/CN109718755A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148047A (en) * | 2014-08-31 | 2014-11-19 | 华东理工大学 | Macro preparation method for carbon doped zinc oxide-based visible-light catalyst |
| CN104998632A (en) * | 2015-07-15 | 2015-10-28 | 江苏大学 | Liquid phase ultrasonic-assisted method for preparing graphene-doped zinc oxide |
| CN106976855A (en) * | 2016-01-15 | 2017-07-25 | 东北林业大学 | A kind of preparation method of holocellulose hydro-thermal charcoal |
| CN106362800A (en) * | 2016-08-11 | 2017-02-01 | 广西南宁胜祺安科技开发有限公司 | Graphene-doped zinc oxide photocatalyst |
Non-Patent Citations (1)
| Title |
|---|
| 于瑞冬等: "一步水热合成ZnO/水热炭复合材料及其性能表征", 《北京林业大学学报》 * |
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