CN104056609A - Preparation method of titanium dioxide-graphene oxide composite - Google Patents
Preparation method of titanium dioxide-graphene oxide composite Download PDFInfo
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- CN104056609A CN104056609A CN201410253883.7A CN201410253883A CN104056609A CN 104056609 A CN104056609 A CN 104056609A CN 201410253883 A CN201410253883 A CN 201410253883A CN 104056609 A CN104056609 A CN 104056609A
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Abstract
The invention relates to the technical fields of chemistry and photocatalysis and particularly relates to a preparation method of a titanium dioxide-graphene oxide composite. The preparation method comprises the following steps: firstly, respectively preparing an aqueous solution of titanium dioxide and an aqueous solution of graphene oxide; mixing the aqueous solutions to obtain a mixed solution; dissolving the mixed solution in polyethylene oxide to obtain a mixture serving as a spinning aid; and performing electrostatic spinning to obtain the titanium dioxide/graphene oxide composite. According to the preparation method of the titanium dioxide/graphene oxide composite, titanium dioxide/graphene oxide are processed into a nanometer fiber structure by virtue of an electrostatic spinning technology, and on the premise that no agglomeration is ensured, the catalytic efficiency is increased.
Description
Technical field
The present invention relates to chemistry and photocatalysis technology field, especially relate to a kind of preparation method of titanium dioxide/graphene oxide compound.
Background technology
Photocatalysis technology has a wide range of applications in many fields such as wastewater treatment, gas purification, sterilization, self-cleaning material, DSSC, cosmetics, gas sensors.At present, for the N-type semiconductor that mostly is of photochemical catalyst, wherein titanium dioxide because of its have nontoxic, catalytic activity is high, oxidability is strong, good stability, the advantage such as cheap and easy to get, is the most frequently used photochemical catalyst at present.Titanium dioxide has three kinds of crystal formations: anatase, rutile and brockite, research report in the past it has been generally acknowledged that the activity of Detitanium-ore-type is the highest.
Titanium dioxide is a kind of important inorganic material raw materials, its particle size is between 1nm-100 μ m, nano titanium oxide is because himself yardstick reaches Nano grade, thereby specific area is large, surface can be high, surface atom proportion is large, the common special character of many nano materials therefore producing.With and distinctive three large effects: skin effect, small-size effect and macro quanta tunnel effect.Macroscopic view shows special optical property thermal property, magnetic property, mechanical property above.Nano titanium oxide transmits carrier because of the special nature of himself as played the part of electronics key player at solar energy of new generation such as manufacture DSSC and quantum dot solar cells is important materials and the part that solar cell of future generation is made.
The characteristic of Graphene maximum is that electronics movement velocity therein can reach 1/300 of the light velocity, considerably beyond the movement velocity of electronics in general conductor.This makes the electronics in Graphene, or it is closely similar to be called more accurately character and the relativistic neutrino of " charge carrier ".
At present, titanium dioxide/graphene oxide compound is mainly to exist with spherical form, easily reunites, and specific area is little, and catalytic efficiency is low.
Summary of the invention
The technical problem to be solved in the present invention is: the present invention has overcome the deficiencies in the prior art, a kind of preparation method of titanium dioxide/graphene oxide compound is provided, pass through electrostatic spinning technique, titanium dioxide/graphene oxide is processed into nanofibrous structures, in the situation that having ensured that it does not occur to reunite, increase again its catalytic efficiency.
The technical solution adopted for the present invention to solve the technical problems is: a kind of preparation method of titanium dioxide/graphene oxide compound, comprises the following steps:
Step 1) preparation of solution: titania powder is dissolved in water, stirs, being mixed with mass fraction is the titanium dioxide aqueous solution of 0.5-1wt%,
Graphene oxide powder dissolution, in water, is stirred, and being mixed with mass fraction is the graphite oxide aqueous solution of 0.5-1wt%,
Step 2) preparation of Electrospun liquid: by step 1) in the titanium dioxide aqueous solution and graphite oxide aqueous solution taking mass ratio as 1-9: the ratio of 9-1 is mixed, fully stir, in solution, add polyethylene glycol oxide powder while stirring, obtain the solution of homogeneous, the quality of described polyethylene glycol oxide powder is the 4-8wt% of mixed solution quality
Step 3) electrostatic spinning: by step 2) in preparation uniform solution join in solution feedway, spinning voltage 10～18kV is set, spinning distance 8～16cm between spinning mouth and receiving system, flow control 0.6～1ml/h, starting drive carries out electrostatic spinning, collects the nano fibrous membrane of titanium dioxide/graphene oxide compound on receiving system.
As preferably, described titanium dioxide is anatase titanium dioxide.
As preferably, described step 1) in the mixing speed of the preparing titanium dioxide aqueous solution be more than or equal to 10000 revs/min.
As preferably, described step 1) in the mixing speed of preparation graphite oxide aqueous solution be more than or equal to 10000 revs/min.
As preferably, the molecular weight of described polyethylene glycol oxide is 100000-1000000.
The invention has the beneficial effects as follows: the preparation method of a kind of titanium dioxide/graphene oxide compound provided by the invention, pass through electrostatic spinning technique, titanium dioxide/graphene oxide is processed into nanofibrous structures, in the situation that having ensured that it does not occur to reunite, has increased again its catalytic efficiency.
Detailed description of the invention
Below in conjunction with specific embodiment, further the present invention is set forth, should be understood that and quote embodiment only for the present invention is described, limit the scope of the invention and be not used in.
Embodiment 1
A preparation method for titanium dioxide/graphene oxide compound, comprises the following steps:
Anatase titanium dioxide powder is dissolved in water, under the rotating speed of 10000 revs/min, fully stirs, obtaining mass fraction is the titanium dioxide homogeneous aqueous solution of 0.5wt%,
Graphene oxide powder dissolution, in water, is fully stirred under the rotating speed of 10000 revs/min, and obtaining mass fraction is the graphene oxide homogeneous aqueous solution of 1wt%,
The titanium dioxide aqueous solution and graphite oxide aqueous solution mix taking mass ratio as the ratio of 1: 9, fully stirring, is 100000 polyethylene glycol oxide powder to adding molecular weight in solution while stirring, obtains the solution of homogeneous, the quality of polyethylene glycol oxide powder is the 4wt% of mixed solution quality
The mixed solution of the titanium dioxide/graphene oxide/polyethylene glycol oxide obtaining is joined in solution feedway, spinning voltage 10kV is set, spinning between spinning mouth and receiving system is apart from 16cm, flow control 1ml/h, starting drive carries out electrostatic spinning, collects the nano fibrous membrane of titanium dioxide/graphene oxide compound on receiving system.
Embodiment 2
A preparation method for titanium dioxide/graphene oxide compound, comprises the following steps:
Anatase titanium dioxide powder is dissolved in water, under the rotating speed of 10000 revs/min, fully stirs, obtaining mass fraction is the titanium dioxide homogeneous aqueous solution of 1wt%,
Graphene oxide powder dissolution, in water, is fully stirred under the rotating speed of 10000 revs/min, and obtaining mass fraction is the graphene oxide homogeneous aqueous solution of 0.5wt%,
The titanium dioxide aqueous solution and graphite oxide aqueous solution mix taking mass ratio as the ratio of 9: 1, fully stirring, is 1000000 polyethylene glycol oxide powder to adding molecular weight in solution while stirring, obtains the solution of homogeneous, the quality of polyethylene glycol oxide powder is the 8wt% of mixed solution quality
The mixed solution of the titanium dioxide/graphene oxide/polyethylene glycol oxide obtaining is joined in solution feedway, spinning voltage 18kV is set, spinning between spinning mouth and receiving system is apart from 8cm, flow control 0.6ml/h, starting drive carries out electrostatic spinning, collects the nano fibrous membrane of titanium dioxide/graphene oxide compound on receiving system.
Embodiment 3
A preparation method for titanium dioxide/graphene oxide compound, comprises the following steps:
Anatase titanium dioxide powder is dissolved in water, under the rotating speed of 12000 revs/min, fully stirs, obtaining mass fraction is the titanium dioxide homogeneous aqueous solution of 0.6wt%,
Graphene oxide powder dissolution, in water, is fully stirred under the rotating speed of 12000 revs/min, and obtaining mass fraction is the graphene oxide homogeneous aqueous solution of 1wt%,
The titanium dioxide aqueous solution and graphite oxide aqueous solution mix taking mass ratio as the ratio of 7: 3, fully stirring, is 800000 polyethylene glycol oxide powder to adding molecular weight in solution while stirring, obtains the solution of homogeneous, the quality of polyethylene glycol oxide powder is the 5wt% of mixed solution quality
The mixed solution of the titanium dioxide/graphene oxide/polyethylene glycol oxide obtaining is joined in solution feedway, spinning voltage 12kV is set, spinning between spinning mouth and receiving system is apart from 20cm, flow control 1ml/h, starting drive carries out electrostatic spinning, collects the nano fibrous membrane of titanium dioxide/graphene oxide compound on receiving system.
Embodiment 4
A preparation method for titanium dioxide/graphene oxide compound, comprises the following steps:
Anatase titanium dioxide powder is dissolved in water, under the rotating speed of 20000 revs/min, fully stirs, obtaining mass fraction is the titanium dioxide homogeneous aqueous solution of 0.7wt%,
Graphene oxide powder dissolution, in water, is fully stirred under the rotating speed of 20000 revs/min, and obtaining mass fraction is the graphene oxide homogeneous aqueous solution of 0.8wt%,
The titanium dioxide aqueous solution and graphite oxide aqueous solution mix taking mass ratio as the ratio of 5: 5, fully stirring, is 100000 polyethylene glycol oxide powder to adding molecular weight in solution while stirring, obtains the solution of homogeneous, the quality of polyethylene glycol oxide powder is the 4wt% of mixed solution quality
The mixed solution of the titanium dioxide/graphene oxide/polyethylene glycol oxide obtaining is joined in solution feedway, spinning voltage 16kV is set, spinning between spinning mouth and receiving system is apart from 8cm, flow control 0.7ml/h, starting drive carries out electrostatic spinning, collects the nano fibrous membrane of titanium dioxide/graphene oxide compound on receiving system.
Embodiment 5
A preparation method for titanium dioxide/graphene oxide compound, comprises the following steps:
Anatase titanium dioxide powder is dissolved in water, under the rotating speed of 22000 revs/min, fully stirs, obtaining mass fraction is the titanium dioxide homogeneous aqueous solution of 0.9wt%,
Graphene oxide powder dissolution, in water, is fully stirred under the rotating speed of 22000 revs/min, and obtaining mass fraction is the graphene oxide homogeneous aqueous solution of 0.5wt%,
The titanium dioxide aqueous solution and graphite oxide aqueous solution mix taking mass ratio as the ratio of 4: 6, fully stirring, is 600000 polyethylene glycol oxide powder to adding molecular weight in solution while stirring, obtains the solution of homogeneous, the quality of polyethylene glycol oxide powder is the 7wt% of mixed solution quality
The mixed solution of the titanium dioxide/graphene oxide/polyethylene glycol oxide obtaining is joined in solution feedway, spinning voltage 115kV is set, spinning between spinning mouth and receiving system is apart from 15cm, flow control 0.9ml/h, starting drive carries out electrostatic spinning, collects the nano fibrous membrane of titanium dioxide/graphene oxide compound on receiving system.
Taking above-mentioned foundation desirable embodiment of the present invention as enlightenment, by above-mentioned description, relevant staff can, not departing from the scope of this invention technological thought, carry out various change and amendment completely.The technical scope of this invention is not limited to the content on description, must determine its technical scope according to claim scope.
Claims (5)
1. a preparation method for titanium dioxide/graphene oxide compound, is characterized in that comprising the following steps:
Step 1) preparation of solution: titania powder is dissolved in water, stirs, being mixed with mass fraction is the titanium dioxide aqueous solution of 0.5-1wt%,
Graphene oxide powder dissolution, in water, is stirred, and being mixed with mass fraction is the graphite oxide aqueous solution of 0.5-1wt%,
Step 2) preparation of Electrospun liquid: by step 1) in the titanium dioxide aqueous solution and graphite oxide aqueous solution taking mass ratio as 1-9: the ratio of 9-1 is mixed, fully stir, in solution, add polyethylene glycol oxide powder while stirring, obtain the solution of homogeneous, the quality of described polyethylene glycol oxide powder is the 4-8wt% of mixed solution quality
Step 3) electrostatic spinning: by step 2) in preparation uniform solution join in solution feedway, spinning voltage 10～18kV is set, spinning distance 8～16cm between spinning mouth and receiving system, flow control 0.6～1ml/h, starting drive carries out electrostatic spinning, collects the nano fibrous membrane of titanium dioxide/graphene oxide compound on receiving system.
2. the preparation method of a kind of titanium dioxide/graphene oxide compound as claimed in claim 1, is characterized in that: described titanium dioxide is anatase titanium dioxide.
3. the preparation method of a kind of titanium dioxide/graphene oxide compound as claimed in claim 1, is characterized in that: described step 1) in the mixing speed of the preparing titanium dioxide aqueous solution be more than or equal to 10000 revs/min.
4. the preparation method of a kind of titanium dioxide/graphene oxide compound as claimed in claim 1, is characterized in that: described step 1) in the mixing speed of preparation graphite oxide aqueous solution be more than or equal to 10000 revs/min.
5. the preparation method of a kind of titanium dioxide/graphene oxide compound as claimed in claim 1, is characterized in that: the molecular weight of described polyethylene glycol oxide is 100000-1000000.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016163858A (en) * | 2015-03-06 | 2016-09-08 | 株式会社東芝 | Photocatalyst structure, method for producing the same and photocatalyst-dispersed liquid |
| CN107469636A (en) * | 2017-09-14 | 2017-12-15 | 辽宁兰晶科技有限公司 | A kind of rGO/TiO2The preparation method and application of photocatalysis filter membrane |
| CN107880484A (en) * | 2017-12-05 | 2018-04-06 | 中北大学 | A kind of composite modified high polymer material of nano-particle/graphene oxide and its preparation |
| CN108854540A (en) * | 2018-07-06 | 2018-11-23 | 江西博鑫精陶环保科技有限公司 | A kind of large-scale photocatalysis inorganic titanium plate membrane reaction bed for sewage treatment |
| CN113441180A (en) * | 2021-06-28 | 2021-09-28 | 上海理工大学 | nanofiber/GO composite material and preparation method and application thereof |
| CN115121240A (en) * | 2022-07-01 | 2022-09-30 | 江苏双良环境科技有限公司 | A kind of porous titanium dioxide composite material and its preparation method and application |
-
2014
- 2014-06-09 CN CN201410253883.7A patent/CN104056609A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016163858A (en) * | 2015-03-06 | 2016-09-08 | 株式会社東芝 | Photocatalyst structure, method for producing the same and photocatalyst-dispersed liquid |
| CN107469636A (en) * | 2017-09-14 | 2017-12-15 | 辽宁兰晶科技有限公司 | A kind of rGO/TiO2The preparation method and application of photocatalysis filter membrane |
| CN107880484A (en) * | 2017-12-05 | 2018-04-06 | 中北大学 | A kind of composite modified high polymer material of nano-particle/graphene oxide and its preparation |
| CN108854540A (en) * | 2018-07-06 | 2018-11-23 | 江西博鑫精陶环保科技有限公司 | A kind of large-scale photocatalysis inorganic titanium plate membrane reaction bed for sewage treatment |
| CN113441180A (en) * | 2021-06-28 | 2021-09-28 | 上海理工大学 | nanofiber/GO composite material and preparation method and application thereof |
| CN115121240A (en) * | 2022-07-01 | 2022-09-30 | 江苏双良环境科技有限公司 | A kind of porous titanium dioxide composite material and its preparation method and application |
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