CN103143380B - Solvent evaporation method for preparing graphite phase carbon nitride/{001} surface exposed anatase phase titanium dioxide nano composite material - Google Patents
Solvent evaporation method for preparing graphite phase carbon nitride/{001} surface exposed anatase phase titanium dioxide nano composite material Download PDFInfo
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Abstract
The invention discloses a solvent evaporation method for preparing graphite phase carbon nitride/{001} surface exposed anatase phase titanium dioxide nano composite material and relates to the preparation of organic polymer/inorganic semiconductor nano composite material. The invention aims to solve the problems that the conventional {001} surface exposed anatase phase titanium dioxide photocatalyst is wide in response range and low in quantum efficiency. The preparation method comprises the following steps: 1, preparing graphite phase carbon nitride; 2, preparing {001} surface exposed anatase phase titanium dioxide nanosheets; 3, preparing solid substances; and 4, preparing the graphite phase carbon nitride/{001} surface exposed anatase phase titanium dioxide nano composite material. The obtained graphite phase carbon nitride/{001} surface exposed anatase phase titanium dioxide nano composite material has high ultraviolet light catalytic activity and also has an excellent visible light catalytic capacity. The method is used for preparing the graphite phase carbon nitride/{001} surface exposed anatase phase titanium dioxide nano composite material.
Description
Technical field
The present invention relates to the preparation of organic polymer/inorganic semiconductor nano composite material.
Background technology
Along with expanding economy and social progress, problem of environmental pollution is on the rise.Photocatalysis technology is one of most economical effective means of curbing environmental pollution, and therefore obtains the attention of countries in the world government.As typical semiconductor light-catalyst, titanium dioxide have nontoxic, cheap and easy to get, catalytic capability is strong, abrasion resistance good, chemical stability is high and the advantage such as reusable edible, is thus subject to the extensive concern of field of environment protection experts and scholars.Titanium dioxide mainly contains three kinds of crystal formations, is anatase, rutile and brockite respectively, and wherein anatase has higher photocatalytic activity comparatively by force due to the redox ability of photoproduction charge carrier, is a kind of crystal formation that field of titanium dioxide photocatalysis is studied at most.Theoretical and experiment all shows, { 001} face is its high energy crystal face to anatase, and surface energy reaches 0.90J m
-2, { photocatalytic activity of the anatase phase titanium dioxide that 001} face exposes even is better than the titanium deoxide catalyst Degussa P25 of business.
But anatase phase titanium dioxide photocatalyst also has the two large defects himself being difficult to overcome, i.e. photoresponse narrow range, quantum efficiency is low.The energy gap of anatase phase titanium dioxide is 3.2eV, can only absorb the ultraviolet portion that sunshine medium wavelength is less than 387nm, and this part ultraviolet light only accounts for 3% ~ 5% of whole solar spectrum.Under the irradiation of ultraviolet light, the electron excitation at titanium dioxide valence band place transits to conduction band, generates a hole in valence band simultaneously, thus forms electron-hole pair.A series of chain reaction is there is with the hydrone and oxygen molecule that are adsorbed on titanium dioxide surface and finally generates hydroxyl radical free radical in these photoproduction charge carriers after bulk diffusion and surface migration, and hydroxyl radical free radical has very strong oxidability, thus the various organic pollution of oxidation classification.But to very unstable, very easily there is again compound and cause the reduction of material quantum efficiency, thus weakening its photo-catalysis capability in these photo-generate electron-hole.How to solve the research topic that the photoresponse narrow range problem low with quantum efficiency has just become anatase phase titanium dioxide photocatalysis field main.
In this area research, name is called " g-C
3n
4/ TiO
2hybrid photocatalyst with wide absorption wavelength range and effective photogenerated charge separation " disclose a kind of g-C
3n
4/ TiO
2composite photo-catalyst, but the method to prepare titanium dioxide process reaction temperature high, easily cause TiO 2 particles agglomeration; Name is called that " Synthesis of Titania Nanosheets with a High percentage of Exposed (001) Facets and Related Photocatalytic Properties " discloses a kind of a kind of height of strong acid system water heat transfer that adopts and expose { 001} face anatase titania nanometer sheet.
Summary of the invention
The present invention is that existing { 001} face exposes anatase phase titanium dioxide photocatalyst photoresponse narrow range and the low problem of quantum efficiency, and provides and to prepare with solvent evaporation method alcoholic solvent that graphite phase carbon nitride/{ 001} face exposes anatase phase titanium dioxide nano composite material in order to solve.
With solvent evaporation method alcoholic solvent prepare graphite phase carbon nitride/001} face expose anatase phase titanium dioxide nano composite material, concrete steps are as follows:
One, urea is put into crucible, then crucible is placed in Muffle furnace and calcines 1h ~ 4h under temperature is 500 DEG C ~ 600 DEG C conditions, controlling heating rate is 15 DEG C/min, is then naturally down to room temperature, then grind into powder, obtains graphite phase carbon nitride;
Two, by 1mL ~ 6mL titanium salt and the mixing of 5mL ~ 30mL alcohol, ultrasonic 0.5h ~ 3h under air-proof condition again, then system is transferred in water heating kettle liner, controlling magnetic agitation rotating speed is 300 revs/min ~ 800 revs/min, drips 0.1mL ~ 2mL hydrofluoric acid solution, then under temperature is 150 DEG C ~ 200 DEG C conditions, hydrothermal treatment consists 6h ~ 24h, taking precipitate again, and use absolute ethyl alcohol centrifuge washing, it is obtained that { 001} face exposes anatase phase titanium dioxide nanometer sheet;
Three, graphite phase carbon nitride 4mg ~ 40mg step one obtained and the alcohol of 40mL ~ 80mL mix, add { the 001} face exposure anatase phase titanium dioxide nanometer sheet that step 2 obtains again, then ultrasonic disperse 0.5h ~ 2h, obtain suspension, then by suspension under ventilation condition, controlling magnetic agitation speed is 500 revs/min ~ 1000 revs/min, stirs 4h ~ 12h, obtains solid matter;
Four, the solid matter that step 3 obtains is transferred in baking oven, constant temperature 2h ~ 8h under temperature is 80 DEG C ~ 120 DEG C conditions, then be ground into powder, obtain graphite phase carbon nitride/{ 001} face exposure anatase phase titanium dioxide nano composite material.
Wherein, the titanium salt described in step 2 is titanium tetrachloride, titanium sulfate, titanyl sulfate, butyl titanate or isopropyl titanate;
Alcohol described in step 2 is ethanol or isopropyl alcohol;
Alcohol described in step 3 is methyl alcohol or ethanol.
Graphite phase carbon nitride is a kind of organic polymer, has the layer structure similar with Graphene.But with Graphene unlike, graphite phase carbon nitride is a kind of semi-conducting material, and extinction threshold value is at about 460nm.By graphite phase carbon nitride with { 001} face exposes anatase phase titanium dioxide compound, then the photophase scope of the latter can be widened visible region; In addition, because the band structure of graphite phase carbon nitride and the band structure of titanium dioxide match each other, after the graphite phase carbon nitride with pi-electron conjugated system and two-dimension plane structure and anatase phase titanium dioxide compound, the transfer of photoproduction charge carrier between two components will be conducive to, thus the compound again that photo-generate electron-hole can be suppressed right, extend the life-span of photoproduction charge carrier and improve quantum efficiency and the photo-catalysis capability of titanium dioxide optical catalyst.
The invention has the beneficial effects as follows: the present invention is directed to that existing { 001} face exposes anatase phase titanium dioxide photocatalyst photoresponse narrow range and the major defect such as quantum efficiency is low, to the graphite phase carbon nitride compound with it of conjugated pi electron structure be had by solvent evaporation method, generate graphite phase carbon nitride/{ 001} face exposure anatase phase titanium dioxide nano composite material.In gained nano composite material, titanium dioxide nanoplate is pure Anatase, the about 38nm of the length of side, and thickness is about 6nm, and { 001} face exposure is about 76%, and the graphite phase carbon nitride of layer structure is then coated on the surface of titanium dioxide nanoplate.{ 001} face exposes compared with anatase phase titanium dioxide nanometer particle, and graphite phase carbon nitride/{ 001} face exposure anatase phase titanium dioxide nano composite material not only ultraviolet catalytic activity significantly improves, but also possesses excellent visible light catalytic ability with pure.And the raw material used are cheap and easy to get, easy and simple to handle, equipment and technology is simple, can be widely used as catalysis material and photoelectric material, can be used in administering waste water, purifies air, the aspect such as opto-electronic conversion.
The present invention is for the preparation of graphite phase carbon nitride/{ 001} face exposes anatase phase titanium dioxide nano composite material.
Accompanying drawing explanation
Fig. 1 is the transmission electron microscope photo of the graphite phase carbon nitride of embodiment one step one preparation;
Fig. 2 is the Fourier descriptors figure of the graphite phase carbon nitride of embodiment one step one preparation;
Fig. 3 is that embodiment one step 2 prepares the { transmission electron microscope photo of 001} face exposure anatase phase titanium dioxide nanometer sheet;
Fig. 4 is that embodiment one step 2 prepares { the high-resolution-ration transmission electric-lens photo of 001} face exposure anatase phase titanium dioxide nanometer sheet;
Fig. 5 is that embodiment one step 2 prepares the { XRD spectra of 001} face exposure anatase phase titanium dioxide nanometer sheet;
Fig. 6 is graphite phase carbon nitride/{ low power transmission electron microscope photo of 001} face exposure anatase phase titanium dioxide nano composite material prepared by embodiment one;
Fig. 7 is graphite phase carbon nitride/{ high power transmission electron microscope photo of 001} face exposure anatase phase titanium dioxide nano composite material prepared by embodiment one;
Fig. 8 is graphite phase carbon nitride/{ XRD spectra of 001} face exposure anatase phase titanium dioxide nano composite material prepared by embodiment one;
Fig. 9 be embodiment one step 2 prepare 001} face expose prepared by anatase phase titanium dioxide nanometer sheet and embodiment one graphite phase carbon nitride/{ 001} face exposes anatase phase titanium dioxide nano composite material ultraviolet catalytic degradating organic dye methylene blue, time dependent degradation rate curve map, in figure, a indicates without methylene blue dye during photochemical catalyst from the degradation rate curve under UV-irradiation, in figure, b represents { 001} face exposure anatase phase titanium dioxide nanometer sheet ultraviolet catalytic degradating organic dye methylene blue prepared by embodiment one step 2, time dependent degradation rate curve map, in figure, c represents graphite phase carbon nitride/{ 001} face exposure anatase phase titanium dioxide nano composite material ultraviolet catalytic degradating organic dye methylene blue prepared by embodiment one, time dependent degradation rate curve map,
Figure 10 be embodiment one step 2 prepare 001} face expose prepared by anatase phase titanium dioxide nanometer sheet and embodiment one graphite phase carbon nitride/{ 001} face exposes anatase phase titanium dioxide nano composite material visible light photocatalytic degradation organic dyestuff methylene blue, time dependent degradation rate curve map, in figure, a indicates without methylene blue dye during photochemical catalyst self degradation rate curve under visible light illumination, in figure, b represents { 001} face exposure anatase phase titanium dioxide nanometer sheet visible light photocatalytic degradation organic dyestuff methylene blue prepared by embodiment one step 2, time dependent degradation rate curve map, in figure, c represents graphite phase carbon nitride/{ 001} face exposure anatase phase titanium dioxide nano composite material visible light photocatalytic degradation organic dyestuff methylene blue prepared by embodiment one, time dependent degradation rate curve map.
Detailed description of the invention
Technical solution of the present invention is not limited to following cited detailed description of the invention, also comprises any combination between each detailed description of the invention.
Detailed description of the invention one: present embodiment be graphite phase carbon nitride/001} face exposes the preparation of anatase phase titanium dioxide nano composite material, and concrete steps are as follows:
One, urea is put into crucible, then crucible is placed in Muffle furnace and calcines 1h ~ 4h under temperature is 500 DEG C ~ 600 DEG C conditions, controlling heating rate is 15 DEG C/min, is then naturally down to room temperature, then grind into powder, obtains graphite phase carbon nitride;
Two, by 1mL ~ 6mL titanium salt and the mixing of 5mL ~ 30mL alcohol, ultrasonic 0.5h ~ 3h under air-proof condition again, then system is transferred in water heating kettle liner, controlling magnetic agitation rotating speed is 300 revs/min ~ 800 revs/min, drips 0.1mL ~ 2mL hydrofluoric acid solution, then under temperature is 150 DEG C ~ 200 DEG C conditions, hydrothermal treatment consists 6h ~ 24h, taking precipitate again, and use absolute ethyl alcohol centrifuge washing, it is obtained that { 001} face exposes anatase phase titanium dioxide nanometer sheet;
Three, graphite phase carbon nitride 4mg ~ 40mg step one obtained and the alcohol of 40mL ~ 80mL mix, add { the 001} face exposure anatase phase titanium dioxide nanometer sheet that step 2 obtains again, then ultrasonic disperse 0.5h ~ 2h, obtain suspension, then by suspension under ventilation condition, controlling magnetic agitation speed is 500 revs/min ~ 1000 revs/min, stirs 4h ~ 12h, obtains solid matter;
Four, the solid matter that step 3 obtains is transferred in baking oven, constant temperature 2h ~ 8h under temperature is 80 DEG C ~ 120 DEG C conditions, then be ground into powder, obtain graphite phase carbon nitride/{ 001} face exposure anatase phase titanium dioxide nano composite material.
The product adopting present embodiment method to obtain is that graphite phase carbon nitride/{ 001} face exposes anatase phase titanium dioxide nano composite material, wherein titanium dioxide component is the laminated structure of pure Anatase, the about 38nm of the length of side, thickness is about 6nm, { 001} face exposure is about 76%, graphite phase carbon nitride is layer structure, is coated on the surface of titanium dioxide nanoplate.
Detailed description of the invention two: present embodiment and detailed description of the invention one are titanium tetrachloride, titanium sulfate, titanyl sulfate, butyl titanate or isopropyl titanate unlike titanium salt in step 2.Other is identical with detailed description of the invention one.
Detailed description of the invention three: present embodiment and detailed description of the invention one unlike: in step 2, alcohol is ethanol or isopropyl alcohol.Other is identical with detailed description of the invention one.
Detailed description of the invention four: present embodiment and detailed description of the invention one unlike: in step 2, the concentration of hydrofluoric acid solution is 40wt%.Other is identical with detailed description of the invention one.
Detailed description of the invention five: present embodiment and detailed description of the invention one unlike: in step 3, alcohol is methyl alcohol or ethanol.Other is identical with detailed description of the invention one.
Detailed description of the invention six: present embodiment and detailed description of the invention one unlike: in step 3, the addition of graphite phase carbon nitride is 8mg.Other is identical with detailed description of the invention one.
Detailed description of the invention seven: present embodiment and detailed description of the invention one unlike: in step 3, mixing time is 5h ~ 8h.Other is identical with detailed description of the invention one.
Detailed description of the invention eight: one of present embodiment and detailed description of the invention one to seven unlike: in step 3, mixing time is 6h.Other is identical with one of detailed description of the invention one to seven.
Detailed description of the invention nine: present embodiment and detailed description of the invention one unlike: in step 4 under temperature is 90 DEG C ~ 110 DEG C conditions constant temperature 3h ~ 6h.Other is identical with one of detailed description of the invention one to four.
Detailed description of the invention ten: one of present embodiment and detailed description of the invention one to nine unlike: in step 4 under temperature is 100 DEG C of conditions constant temperature 4h.Other is identical with one of detailed description of the invention one to nine.
Following examples are adopted to verify beneficial effect of the present invention:
Embodiment one:
The present embodiment graphite phase carbon nitride/001} face exposes the preparation of anatase phase titanium dioxide nano composite material, and concrete steps are as follows:
One, urea is put into crucible, then crucible is placed in Muffle furnace and calcines 2h under temperature is 550 DEG C of conditions, controlling heating rate is 15 DEG C/min, is then naturally down to room temperature, then grind into powder, obtains graphite phase carbon nitride;
Two, by 4mL butyl titanate and the mixing of 15mL isopropyl alcohol, ultrasonic 1h under air-proof condition again, then system is transferred in water heating kettle liner, controlling magnetic agitation rotating speed is 800 revs/min, drips 0.5mL hydrofluoric acid solution, then under temperature is 180 DEG C of conditions, hydrothermal treatment consists 12h, taking precipitate again, and use absolute ethyl alcohol centrifuge washing, it is obtained that { 001} face exposes anatase phase titanium dioxide nanometer sheet;
Three, graphite phase carbon nitride 8mg step one obtained and the methyl alcohol of 50mL mix, add { the 001} face exposure anatase phase titanium dioxide nanometer sheet that step 2 obtains again, then ultrasonic disperse 1h, obtain suspension, then by suspension under ventilation condition, controlling magnetic agitation speed is 800 revs/min, stirs 6h, obtains solid matter;
Four, the solid matter that step 3 obtains is transferred in baking oven, constant temperature 4h under temperature is 100 DEG C of conditions, then be ground into powder, obtain graphite phase carbon nitride/{ 001} face exposure anatase phase titanium dioxide nano composite material.
As shown in Figure 1, in figure, scale is 100 nanometers to the transmission electron microscope photo of the graphite phase carbon nitride that the present embodiment step one is obtained, and product is micrometre grade thin layer structure as seen from the figure;
The Fourier descriptors figure of the graphite phase carbon nitride of the present embodiment step one preparation as shown in Figure 2, is graphite phase carbon nitride by the known product of peak position of Tu Zhong functional group vibration absorption peak;
The present embodiment step 2 obtained { 001} face exposes the transmission electron microscope photo of anatase phase titanium dioxide nanometer sheet as shown in Figure 3, in figure, scale is 100 nanometers, and product is flaky nanometer structure as seen from the figure, the about 38nm of the length of side, thickness is about 6nm, and { 001} face exposure is about 76%;
The present embodiment step 2 obtained { 001} face exposes the high-resolution-ration transmission electric-lens photo of anatase phase titanium dioxide nanometer sheet as shown in Figure 4, and the interplanar distance being as can be seen from the figure parallel to nanometer sheet upper and lower surfaces is 0.235nm, is high energy { 001} crystal face;
The present embodiment step 2 obtained { 001} face exposes the XRD spectra of anatase phase titanium dioxide nanometer sheet as shown in Figure 5, and titanium dioxide is pure Anatase as seen from the figure, and crystal property is good;
The present embodiment prepare graphite phase carbon nitride/001} face expose anatase phase titanium dioxide nano composite material low power transmission electron microscope photo as shown in Figure 6, in figure, scale is 100 nanometers, and product is the compound of titanium dioxide nanoplate and graphite phase carbon nitride as seen from the figure;
The present embodiment prepare graphite phase carbon nitride/{ 001} face exposes the high power transmission electron microscope picture of anatase phase titanium dioxide nano composite material as shown in Figure 7, and graphite phase carbon nitride lamella covers that { 001} face exposes the surface of anatase phase titanium dioxide nanometer sheet as seen from the figure;
The present embodiment prepare graphite phase carbon nitride/001} face expose anatase phase titanium dioxide nano composite material XRD spectra as shown in Figure 8, the compound of graphite phase carbon nitride does not change the crystal formation of the pure Anatase of titanium dioxide nanoplate as seen from the figure.
Checking embodiment one step 2 obtain 001} face expose graphite phase carbon nitride that anatase phase titanium dioxide nanometer sheet and embodiment one obtain/001} face exposes the photocatalytic activity of anatase phase titanium dioxide nano composite material, and concrete steps are as follows:
A. respectively Example one step 2 obtain 001} face expose that titanium dioxide nanoplate and embodiment one obtain graphite phase carbon nitride/{ 001} face exposes anatase phase titanium dioxide nano composite material 10mg and is positioned in two 50mL beakers, and then add 10mL deionized water respectively, and add respectively 40 μ L mass concentrations be the aqueous solution of methylene blue of 0.2% in above-mentioned two kinds of reaction systems, dark place magnetic agitation 40 minutes;
B. irradiate be placed in the high-pressure sodium lamp of 100W under magnetic agitation condition under, by uv-visible absorption spectra measuring and calculation methylene blue concentration over time; And irradiate be placed in 300W xenon lamp under magnetic agitation condition under, and the optical filter elimination ultraviolet light of a 420nm is covered on beaker, by uv-visible absorption spectra measuring and calculation methylene blue concentration over time.
Embodiment one step 2 obtain 001} face expose that anatase phase titanium dioxide nanometer sheet and embodiment one obtain graphite phase carbon nitride/{ 001} face exposes anatase phase titanium dioxide nano composite material ultraviolet catalytic degradating organic dye methylene blue, time dependent degradation rate curve map as shown in Figure 9, as can be seen from the figure, embodiment one obtain graphite phase carbon nitride/{ 001} face exposes anatase phase titanium dioxide nano composite material, and to have higher ultraviolet catalytic active;
Embodiment one step 2 obtain 001} face expose that anatase phase titanium dioxide nanometer sheet and embodiment one obtain graphite phase carbon nitride/{ 001} face exposes anatase phase titanium dioxide nano composite material visible light photocatalytic degradation organic dyestuff methylene blue, time dependent degradation rate curve map as shown in Figure 10, as can be seen from the figure, embodiment one obtain graphite phase carbon nitride/001} face expose anatase phase titanium dioxide nano composite material also possess excellent visible light catalytic ability.
Claims (10)
1. prepare graphite phase carbon nitride/{ 001} face exposure anatase phase titanium dioxide nano composite material with solvent evaporation method alcoholic solvent, it is characterized in that with solvent evaporation method alcoholic solvent prepare graphite phase carbon nitride/001} face expose anatase phase titanium dioxide nano composite material, concrete steps are as follows:
One, urea is put into crucible, then crucible is placed in Muffle furnace and calcines 1h ~ 4h under temperature is 500 DEG C ~ 600 DEG C conditions, controlling heating rate is 15 DEG C/min, is then naturally down to room temperature, then grind into powder, obtains graphite phase carbon nitride;
Two, by 1mL ~ 6mL titanium salt and the mixing of 5mL ~ 30mL alcohol, ultrasonic 0.5h ~ 3h under air-proof condition again, then system is transferred in water heating kettle liner, controlling magnetic agitation rotating speed is 300 revs/min ~ 800 revs/min, drip 0.1mL ~ 2mL hydrofluoric acid solution, then under temperature is 150 DEG C ~ 200 DEG C conditions, hydrothermal treatment consists 6h ~ 24h, taking precipitate again, and use absolute ethyl alcohol centrifuge washing;
Three, graphite phase carbon nitride 4mg ~ 40mg step one obtained and the alcohol of 40mL ~ 80mL mix, add the sediment that step 2 obtains again, then ultrasonic disperse 0.5h ~ 2h, obtain suspension, then by suspension under ventilation condition, controlling magnetic agitation speed is 500 revs/min ~ 1000 revs/min, stirs 4h ~ 12h, obtains solid matter;
Four, the solid matter that step 3 obtains is transferred in baking oven, constant temperature 2h ~ 8h under temperature is 80 DEG C ~ 120 DEG C conditions, then be ground into powder, obtain graphite phase carbon nitride/{ 001} face exposure anatase phase titanium dioxide nano composite material.
2. according to claim 1 with solvent evaporation method alcoholic solvent prepare graphite phase carbon nitride/001} face expose anatase phase titanium dioxide nano composite material, it is characterized in that the titanium salt described in step 2 is titanium tetrachloride, titanium sulfate, titanyl sulfate, butyl titanate or isopropyl titanate.
3. according to claim 1 with solvent evaporation method alcoholic solvent prepare graphite phase carbon nitride/001} face expose anatase phase titanium dioxide nano composite material, it is characterized in that in step 2, alcohol is ethanol or isopropyl alcohol.
4. according to claim 1 with solvent evaporation method alcoholic solvent prepare graphite phase carbon nitride/001} face expose anatase phase titanium dioxide nano composite material, it is characterized in that the concentration of hydrofluoric acid solution in step 2 is 40wt%.
5. according to claim 1 with solvent evaporation method alcoholic solvent prepare graphite phase carbon nitride/001} face expose anatase phase titanium dioxide nano composite material, it is characterized in that in step 3, alcohol is methyl alcohol or ethanol.
6. according to claim 1 with solvent evaporation method alcoholic solvent prepare graphite phase carbon nitride/001} face expose anatase phase titanium dioxide nano composite material, it is characterized in that the addition of graphite phase carbon nitride in step 3 is 8mg.
7. according to claim 1 with solvent evaporation method alcoholic solvent prepare graphite phase carbon nitride/001} face expose anatase phase titanium dioxide nano composite material, it is characterized in that in step 3, mixing time is 5h ~ 8h.
8. according to claim 7 with solvent evaporation method alcoholic solvent prepare graphite phase carbon nitride/001} face expose anatase phase titanium dioxide nano composite material, it is characterized in that in step 3, mixing time is 6h.
9. according to claim 1ly prepare with solvent evaporation method alcoholic solvent that graphite phase carbon nitride/{ 001} face exposes anatase phase titanium dioxide nano composite material, to it is characterized in that in step 4 constant temperature 3h ~ 6h under temperature is 90 DEG C ~ 110 DEG C conditions.
10. according to claim 9ly prepare with solvent evaporation method alcoholic solvent that graphite phase carbon nitride/{ 001} face exposes anatase phase titanium dioxide nano composite material, to it is characterized in that in step 4 constant temperature 4h under temperature is 100 DEG C of conditions.
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| CN106395771A (en) * | 2016-08-31 | 2017-02-15 | 东华理工大学 | Preparation method of graphite-phase carbon nitride quantum dots |
| CN107199046B (en) * | 2017-07-19 | 2019-07-12 | 南昌航空大学 | A kind of preparation method of three four/titanium dioxide composite photocatalyst of nitrogen of g- carbon of sandwiched configuration |
| CN107335461A (en) * | 2017-07-26 | 2017-11-10 | 中南大学 | A kind of high exposure (001) crystal face TiO2/g‑C3N4The preparation method of composite photo-catalyst |
| CN108295885A (en) * | 2018-02-24 | 2018-07-20 | 张静娟 | A kind of preparation method for the photocatalysis block being used to prepare grapheme material |
| CN108465477A (en) * | 2018-04-03 | 2018-08-31 | 南京大学 | The Preparation method and use of Three-element composite photocatalyst |
| CN108927198B (en) * | 2018-07-09 | 2020-09-22 | 华南理工大学 | Modified carbon nitride photocatalyst, preparation method thereof and method for synthesizing xylonic acid by photocatalytic oxidation of xylose |
| CN109590007A (en) * | 2018-12-24 | 2019-04-09 | 天津城建大学 | g-C3N4The flower-shaped TiO of nanometer sheet intercalation2Microballoon and preparation method thereof |
| CN115138387A (en) * | 2022-07-01 | 2022-10-04 | 福州大学 | Efficient photocatalytic purification composite material and preparation process thereof |
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