CN104138762A - Preparation method and application of a cubic structure CuCr2O4 visible light photocatalyst - Google Patents
Preparation method and application of a cubic structure CuCr2O4 visible light photocatalyst Download PDFInfo
- Publication number
- CN104138762A CN104138762A CN201410353190.5A CN201410353190A CN104138762A CN 104138762 A CN104138762 A CN 104138762A CN 201410353190 A CN201410353190 A CN 201410353190A CN 104138762 A CN104138762 A CN 104138762A
- Authority
- CN
- China
- Prior art keywords
- cucr
- cubic structure
- preparation
- light photocatalyst
- visible light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- 229910002477 CuCr2O4 Inorganic materials 0.000 title 1
- FULFYAFFAGNFJM-UHFFFAOYSA-N oxocopper;oxo(oxochromiooxy)chromium Chemical compound [Cu]=O.O=[Cr]O[Cr]=O FULFYAFFAGNFJM-UHFFFAOYSA-N 0.000 title 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 24
- 238000003756 stirring Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- PHFQLYPOURZARY-UHFFFAOYSA-N chromium trinitrate Chemical compound [Cr+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PHFQLYPOURZARY-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000725 suspension Substances 0.000 claims abstract description 14
- 239000002243 precursor Substances 0.000 claims abstract description 12
- 239000008367 deionised water Substances 0.000 claims abstract description 11
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 11
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000013078 crystal Substances 0.000 claims abstract description 5
- 239000002351 wastewater Substances 0.000 claims abstract description 5
- 239000000243 solution Substances 0.000 claims description 14
- 239000011259 mixed solution Substances 0.000 claims description 10
- 238000005119 centrifugation Methods 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 8
- 239000000975 dye Substances 0.000 claims description 7
- 239000000047 product Substances 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 230000000593 degrading effect Effects 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 239000002244 precipitate Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 239000002105 nanoparticle Substances 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims 2
- 238000001354 calcination Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000006731 degradation reaction Methods 0.000 abstract description 13
- 230000015556 catabolic process Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 5
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- 239000003344 environmental pollutant Substances 0.000 abstract 1
- 231100000719 pollutant Toxicity 0.000 abstract 1
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 11
- 229940043267 rhodamine b Drugs 0.000 description 11
- 239000003054 catalyst Substances 0.000 description 9
- 230000003197 catalytic effect Effects 0.000 description 8
- 230000001699 photocatalysis Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000007146 photocatalysis Methods 0.000 description 4
- 238000006555 catalytic reaction Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- -1 hydroxyl radical free radical Chemical class 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000002152 alkylating effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000003836 solid-state method Methods 0.000 description 1
- 238000002336 sorption--desorption measurement Methods 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Landscapes
- Catalysts (AREA)
Abstract
本发明公开一种立方结构CuCr2O4可见光光催化剂的制备方法与应用。该制备方法是将硝酸铜和硝酸铬溶解于去离子水中，加入氢氧化钠调节溶液的pH值，将溶液加热到一定温度并在此温度下搅拌均匀得到悬浮液，然后将上述悬浮液转移至高压釜中进行水热反应，反应结束后，反应产物经离心、洗涤、干燥、研磨得到前躯体，最后将得到的前躯体在一定的温度下焙烧一定时间，即可得到立方结构CuCr2O4可见光光催化剂。本发明采用水热合成法制备了四方晶相的立方结构CuCr2O4可见光光催化剂，该制备工艺简单，成本低，制备过程无污染排放，且制备的催化剂具有良好的光催化活性，能够有效地应用于降解废水中的有机染料污染物。
The invention discloses a preparation method and application of a cubic structure CuCr 2 O 4 visible light photocatalyst. The preparation method is to dissolve copper nitrate and chromium nitrate in deionized water, add sodium hydroxide to adjust the pH value of the solution, heat the solution to a certain temperature and stir at this temperature to obtain a suspension, and then transfer the suspension to The hydrothermal reaction is carried out in an autoclave. After the reaction, the reaction product is centrifuged, washed, dried, and ground to obtain a precursor. Finally, the obtained precursor is roasted at a certain temperature for a certain period of time to obtain a cubic structure CuCr 2 O 4 Visible light photocatalyst. The present invention adopts the hydrothermal synthesis method to prepare the CuCr 2 O 4 visible light photocatalyst with cubic structure of tetragonal crystal phase. Applied to the degradation of organic dye pollutants in wastewater.
Description
Technical field
The invention belongs to the preparing technical field of catalysis material, be specifically related to a kind of cubic structure CuCr
2o
4the preparation method of visible-light photocatalyst and application.
Background technology
Along with science and technology and industrial fast development, the problem of environmental pollution of facing mankind also becomes increasingly conspicuous, and environmental protection more and more gets more and more people's extensive concerning.Photocatalysis technology has been brought into play important function aspect environmental protection, and utilizing semi-conducting material is a kind of very promising technology as photocatalyst for degrading atmosphere and organic pollutants.Current most of photocatalysis is all around TiO
2launch, but due to TiO
2there is wider energy gap, only at ultraviolet region, have absorption, and its quantum efficiency is low, thereby has limited to a great extent its application in photocatalysis field.People attempt to improve TiO by methods such as photoactivate, doping
2visible ray utilization rate and photocatalysis efficiency, though obtain certain effect, effect is very not remarkable.Find novel visible photochemical catalyst and become the development trend in this field at present.
The CuCr with spinel structure
2o
4be a kind of very important visible light-responded p-type semiconductor light-catalyst, its energy gap is about 1.4eV, can absorb efficiently and utilize solar energy.Due to CuCr
2o
4the stability of structure and visible light-responded, in recent decades, it has been widely used in the fields such as organic pollution in photodissociation aquatic products hydrogen and photocatalytic degradation atmosphere or water under hydrogenization, alkylating and visible ray.Yet the pattern of material physicochemical properties are corresponding thereto closely related, adopt the synthetic traditional chondritic CuCr of high temperature solid-state method, sol-gel process and coprecipitation
2o
4the catalytic rate of photochemical catalyst is slow, and catalytic activity needs further to be improved, and therefore special construction CuCr is prepared in research
2o
4straightforward procedure and improve its catalytic activity and become one of the study hotspot in this field.
Summary of the invention
In order to overcome the shortcoming and deficiency of prior art, primary and foremost purpose of the present invention is to provide a kind of cubic structure CuCr
2o
4the preparation method of visible-light photocatalyst.
Another object of the present invention is to provide the cubic structure obtaining by above-mentioned preparation method CuCr
2o
4visible-light photocatalyst.Good, the visible light-responded wide ranges of this catalyst stability, photocatalytic activity are high.
A further object of the present invention is to provide described cubic structure CuCr
2o
4the application of visible-light photocatalyst organic dyestuff in degrading waste water.
Object of the present invention is achieved through the following technical solutions: a kind of cubic structure CuCr
2o
4the preparation method of visible-light photocatalyst, comprises the following steps:
(1) copper nitrate and chromic nitrate are dissolved in deionized water, stir, obtain mixed solution, then the pH value of mixed solution is adjusted to 10～11; The mol ratio of controlling copper nitrate and chromic nitrate is 1:(1.8～2.2);
(2) solution obtaining in step (1) is heated to 70～80 ℃, and stirs and obtain suspension at this temperature;
(3) suspension step (2) being made carries out hydro-thermal reaction, after reaction finishes, cooling; Controlling hydrothermal temperature is 160～200 ℃, and the hydro-thermal reaction time is 9～13h;
(4) product obtaining after step (3) is cooling carries out centrifugation, gets precipitation, with deionized water and absolute ethanol washing precipitation several times, dry, obtains precursor after grinding;
(5) precursor step (4) being obtained, in 550～650 ℃ of roasting 3.5～4.5h, makes cubic structure CuCr
2o
4visible-light photocatalyst.
Preferably, the final concentration of the copper nitrate described in step (1) and chromic nitrate is respectively 0.05～0.1mol/L and 0.1～0.2mol/L;
PH value described in step (1) preferably regulates by sodium hydroxide solution;
The concentration of described sodium hydroxide solution is preferably 4～6mol/L;
The time of the stirring described in step (1) is 15～20min;
The time of the stirring described in step (2) is 3～4h;
It is cooling that cooling mode described in step (3) is preferably nature;
Centrifugal condition described in step (4) is the centrifugal 10～15min of 8000～10000r/min;
Dry condition described in step (4) is 70～90 ℃ of dry 4～6h.
A kind of cubic structure CuCr
2o
4visible-light photocatalyst, is made by above-mentioned preparation method, prepared CuCr
2o
4crystal is the cubic structure nano particle of tetragonal phase, and particle diameter is about 15～30nm, and specific area is 12～15m
2g
-1, there is strong visible absorption ability, wide visible light-responded scope, highlight catalytic active and good stability.
Described cubic structure CuCr
2o
4the application of visible-light photocatalyst organic dyestuff in degrading waste water.CuCr in the application of organic dyestuff in degrading waste water
2o
4with H
2o
2mol ratio be 1:(4～6), H
2o
2in degradation process, be mainly to catch light induced electron, hydroxyl radical free radical (OH) is provided.
Mechanism of the present invention is:
CuCr
2O
4+hν→CuCr
2O
4(h
++e
-) (1)
H
2O
2+CuCr
2O
4(e
-)→OH
·+OH
-+CuCr
2O
4 (2)
OH
.+ organic dyestuff → catabolite (3)
The present invention has following advantage and effect with respect to prior art:
(1) the present invention has prepared the cubic structure CuCr of tetragonal phase by hydrothermal synthesis method
2o
4, pattern homogeneous, purity is high.
(2) it is cheap and easy to get, with low cost that the present invention prepares the raw material of use, and technique is simple, preparation process non-pollution discharge.
(3) cubic structure CuCr of the present invention
2o
4visible-light photocatalyst has good stability, wide visible light-responded scope, highlight catalytic active, is applicable to the fields such as solar energy trans-utilization and environmental improvement, as the degraded that contains rhodamine B organic dyestuff industrial wastewater.
Accompanying drawing explanation
Fig. 1 is the cubic structure CuCr of embodiment 1 preparation
2o
4the cubic structure CuCr of preparation in visible-light photocatalyst and embodiment 1
2o
4the CuCr that visible-light photocatalyst circulates and reclaims after the rhodamine B degradation aqueous solution 5 times under same experimental conditions
2o
4x-ray diffractogram.
Fig. 2 is the cubic structure CuCr of embodiment 1 preparation
2o
4the transmission electron microscope picture of visible-light photocatalyst.
Fig. 3 is the cubic structure CuCr of embodiment 1 preparation
2o
4the UV-Vis DRS spectrogram of visible-light photocatalyst.
Fig. 4 is the cubic structure CuCr of embodiment 1 preparation
2o
4the concentration time changing curve figure of visible-light photocatalyst rhodamine B degradation under radiation of visible light.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1
A kind of cubic structure CuCr
2o
4the preparation method of visible-light photocatalyst, comprises the following steps:
(1) 5mmol copper nitrate and 10mmol chromic nitrate are dissolved in 50mL deionized water, stir 20min, obtain mixed solution, then to it, adding the sodium hydroxide solution of 5mol/L to regulate the pH value of mixed solution is 10.3;
(2) solution obtaining in step (1) is heated to 70 ℃, and at this temperature, stirs 4h and obtain suspension;
(3) suspension step (2) being made be transferred to reactor (purchased from Guangzhou Yu Hua Instrument Ltd., model: KH-100), at the Water Under thermal response 11h of 180 ℃, reaction finish after, naturally cool to room temperature;
(4) step (3) product is carried out to centrifugation, centrifugation rate is 9000r/min, centrifugal 12min, and the precipitate with deionized water washing obtaining after centrifugal is to neutral, then uses absolute ethanol washing 3 times, under 80 ℃ of conditions, dry 5h, obtains precursor after grinding;
(5) precursor step (4) being obtained is 600 ℃ of roasting 4h in Muffle furnace, make cubic structure CuCr
2o
4visible-light photocatalyst.
Fig. 1 (a) is the cubic structure CuCr of preparation in embodiment 1
2o
4the X-ray diffractogram of visible-light photocatalyst.From Fig. 1 (a), prepared CuCr
2o
4the characteristic diffraction peak of sample and CuCr
2o
4standard card JCPDS No.34-0424's is in full accord, and retrieval obtains prepared CuCr
2o
4crystal is tetragonal phase, and CuO, Cr do not detected
2o
3and the diffraction maximum of other impurity, this shows successfully to have prepared the CuCr of tetragonal phase
2o
4photochemical catalyst, and the product making is purer; According to Scherrer equation, calculate prepared CuCr
2o
4the particle diameter of nano particle is about 15 nm～30 nm; Fig. 1 (b) is the cubic structure CuCr of preparation in embodiment 1
2o
4visible-light photocatalyst circulates after the rhodamine B degradation aqueous solution (20mg/L) 5 times and reclaims the CuCr obtaining under same experimental conditions
2o
4x-ray diffractogram, from Fig. 1 (b), can find out, recycle and reclaim the CuCr obtaining after 5 times
2o
4the characteristic diffraction peak of visible-light photocatalyst is consistent with Fig. 1 (a), and prepared cubic structure CuCr is described
2o
4visible-light photocatalyst has good stability; From Fig. 2 transmission electron microscope photo, can observe obvious cubic structure, confirm by the legal cubic structure CuCr that successfully makes of hydro-thermal
2o
4photochemical catalyst, and the cubic structure CuCr making
2o
4particle belongs to Nano grade, is evenly distributed, pattern homogeneous; From the UV-Vis DRS collection of illustrative plates of Fig. 3, prepared cube CuCr
2o
4sample has strong absorption in whole visible-range, and the cubic structure CuCr making is described
2o
4there is wide visible light-responded scope and visible light catalysis activity.
Embodiment 2
A kind of cubic structure CuCr
2o
4the preparation method of visible-light photocatalyst, comprises the following steps:
(1) 2.5mmol copper nitrate and 5.5mmol chromic nitrate are dissolved in 50mL deionized water, stir 15min, obtain mixed solution, then to it, adding the sodium hydroxide solution of 4mol/L to regulate the pH value of mixed solution is 11;
(2) solution obtaining in step (1) is heated to 80 ℃, and at this temperature, stirs 3.5h and obtain suspension;
(3) suspension step (2) being made is transferred in reactor, at the Water Under thermal response 13h of 160 ℃, after reaction finishes, naturally cools to room temperature;
(4) step (3) product is carried out to centrifugation, centrifugation rate is 10000r/min, centrifugal 10min, and the precipitate with deionized water washing obtaining after centrifugal is to neutral, then uses absolute ethanol washing 3 times, under 90 ℃ of conditions, dry 4h, obtains precursor after grinding;
(5) precursor step (4) being obtained is 550 ℃ of roasting 4.5h in Muffle furnace, make cubic structure CuCr
2o
4visible-light photocatalyst.
Cubic structure CuCr in the present embodiment
2o
4the X-ray diffractogram of visible-light photocatalyst, transmission electron microscope picture and UV-Vis DRS spectrogram are similar to Fig. 1～3.
Embodiment 3
A kind of cubic structure CuCr
2o
4the preparation method of visible-light photocatalyst, comprises the following steps:
(1) 5mmol copper nitrate and 9mmol chromic nitrate are dissolved in 50mL deionized water, stir 20min, obtain mixed solution, then to it, adding the sodium hydroxide solution of 6mol/L to regulate the pH value of mixed solution is 10;
(2) solution obtaining in step (1) is heated to 75 ℃, and at this temperature, stirs 3h and obtain suspension;
(3) suspension step (2) being made is transferred in reactor, at the Water Under thermal response 9h of 200 ℃, after reaction finishes, naturally cools to room temperature;
(4) step (3) product is carried out to centrifugation, centrifugation rate is 8000r/min, centrifugal 15min, and the precipitate with deionized water washing obtaining after centrifugal is to neutral, then uses absolute ethanol washing 3 times, under 70 ℃ of conditions, dry 6h, obtains precursor after grinding;
(5) precursor step (4) being obtained is 650 ℃ of roasting 3.5h in Muffle furnace, make a cube CuCr
2o
4visible-light photocatalyst.
Cubic structure CuCr in the present embodiment
2o
4the X-ray diffractogram of visible-light photocatalyst, transmission electron microscope picture and UV-Vis DRS spectrogram are similar to Fig. 1～3.
Application Example
Use the cubic structure CuCr of preparation
2o
4visible-light photocatalyst is catalytic degradation organic dyestuff under sunshine: the rhodamine B aqueous solution of take is evaluated the photocatalytic activity of this catalyst as simulating sewage.Experiment condition is set to: (1) is by the 20mg cubic structure CuCr of preparation in embodiment 1
2o
4it is 20mgL that visible-light photocatalyst is distributed to 50mL concentration
-1the rhodamine B aqueous solution in, before illumination reaction, first suspension is placed in to dark surrounds magnetic agitation 30min so that system reaches adsorption/desorption balance, then in suspension, add 50 μ L H
2o
2(30%, mass fraction), continues to stir 3min; (2) open simulated solar light source, after each illumination 15min, sample, centrifuging and taking supernatant liquor, detects the variation of upper strata ultraviolet-visible absorbance of rhodamine B solution in the stillness of night.
Fig. 4 is cubic structure CuCr in embodiment 1
2o
4the concentration time changing curve figure of rhodamine B degradation under visible-light photocatalyst radiation of visible light.Known in conjunction with Fig. 4, in contrast experiment, with H
2o
2(50 μ L) and pure cubic structure CuCr
2o
4(20mg), while being photochemical catalyst, after radiation of visible light 60min, the degradation rate of rhodamine B is respectively 10.8% and 6.4%, and H is described
2o
2with pure cubic structure CuCr
2o
4catalytic degradation activity to rhodamine B is very low, for the pure cubic structure CuCr with strong visible absorption
2o
4low catalytic degradation activity be mainly because its light induced electron-hole is to very easily compound; And at H
2o
2under the condition existing with cubic structure CuCr
2o
4(20mg) while being photochemical catalyst, at 60min only to the degradation rate of rhodamine B up to 96.8%, this shows cubic structure CuCr
2o
4visible-light photocatalyst is at H
2o
2assistance under there is high visible light catalysis activity, and degradation rate is very fast.H
2o
2effect in this catalytic degradation process is mainly to generate OH by catching light induced electron, thereby has effectively suppressed the right separation in light induced electron-hole, improves CuCr
2o
4the photocatalytic activity of visible-light photocatalyst.Therefore the cubic structure CuCr that, prepared by the present invention
2o
4visible-light photocatalyst is at H
2o
2assistance under can be effectively applied to Visible Light Induced Photocatalytic organic pollution.
Above-described embodiment is preferably embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410353190.5A CN104138762A (en) | 2014-07-23 | 2014-07-23 | Preparation method and application of a cubic structure CuCr2O4 visible light photocatalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410353190.5A CN104138762A (en) | 2014-07-23 | 2014-07-23 | Preparation method and application of a cubic structure CuCr2O4 visible light photocatalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104138762A true CN104138762A (en) | 2014-11-12 |
Family
ID=51848202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410353190.5A Pending CN104138762A (en) | 2014-07-23 | 2014-07-23 | Preparation method and application of a cubic structure CuCr2O4 visible light photocatalyst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104138762A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107376929A (en) * | 2017-08-09 | 2017-11-24 | 南京工业大学 | Catalytic combustion catalyst, preparation and application thereof |
| CN108404927A (en) * | 2018-03-13 | 2018-08-17 | 湘潭大学 | The method of dye wastewater degradation catalyst, preparation method and degrading waste water |
| CN108796460A (en) * | 2018-06-11 | 2018-11-13 | 佛山腾鲤新能源科技有限公司 | A kind of preparation method of solar selectively adsorption layer |
| CN111777099A (en) * | 2020-06-28 | 2020-10-16 | 陕西师范大学 | A kind of preparation method of cubic spinel nano-flaky copper chromite |
| CN115385377A (en) * | 2022-08-25 | 2022-11-25 | 湖南汇帮环保科技有限公司 | Preparation method of copper chromite for laser etching chemical plating aid |
| CN116212886A (en) * | 2022-12-29 | 2023-06-06 | 上海航天化工应用研究所 | Spherical copper-chromium composite metal oxide burning rate catalyst and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1426965A (en) * | 2001-12-17 | 2003-07-02 | 上海润基科技发展有限公司 | Preparation of nano copper chromite using microemulsion method |
| CN101367044A (en) * | 2008-07-18 | 2009-02-18 | 清华大学 | A kind of method for preparing nano-catalyst copper chromite and copper ferrite |
| CN101610840A (en) * | 2007-02-14 | 2009-12-23 | 伊士曼化工公司 | Palladium-palladium-copper chromite hydrogenation catalysts |
| CN102500389A (en) * | 2011-11-03 | 2012-06-20 | 北京化工大学 | Copper chromite/carbon nanotube nano-composite catalyst, preparation method and application |
-
2014
- 2014-07-23 CN CN201410353190.5A patent/CN104138762A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1426965A (en) * | 2001-12-17 | 2003-07-02 | 上海润基科技发展有限公司 | Preparation of nano copper chromite using microemulsion method |
| CN101610840A (en) * | 2007-02-14 | 2009-12-23 | 伊士曼化工公司 | Palladium-palladium-copper chromite hydrogenation catalysts |
| CN101367044A (en) * | 2008-07-18 | 2009-02-18 | 清华大学 | A kind of method for preparing nano-catalyst copper chromite and copper ferrite |
| CN102500389A (en) * | 2011-11-03 | 2012-06-20 | 北京化工大学 | Copper chromite/carbon nanotube nano-composite catalyst, preparation method and application |
Non-Patent Citations (2)
| Title |
|---|
| SHAHID KHAN DURRANI, ET AL.: ""Hydrothermal synthesis and characterization of nanosized transition metal chromite spinels"", 《TURK J CHEM》, vol. 36, 31 December 2012 (2012-12-31), pages 111 - 120 * |
| 胡志强等: ""尖晶石型CuCr_2O_4纳米粉体的制备及应用"", 《陶瓷学报》, vol. 31, no. 4, 31 December 2010 (2010-12-31), pages 512 - 516 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107376929A (en) * | 2017-08-09 | 2017-11-24 | 南京工业大学 | Catalytic combustion catalyst, preparation and application thereof |
| CN108404927A (en) * | 2018-03-13 | 2018-08-17 | 湘潭大学 | The method of dye wastewater degradation catalyst, preparation method and degrading waste water |
| CN108796460A (en) * | 2018-06-11 | 2018-11-13 | 佛山腾鲤新能源科技有限公司 | A kind of preparation method of solar selectively adsorption layer |
| CN111777099A (en) * | 2020-06-28 | 2020-10-16 | 陕西师范大学 | A kind of preparation method of cubic spinel nano-flaky copper chromite |
| CN111777099B (en) * | 2020-06-28 | 2022-07-01 | 陕西师范大学 | Preparation method of cubic spinel type nano flaky copper chromite |
| CN115385377A (en) * | 2022-08-25 | 2022-11-25 | 湖南汇帮环保科技有限公司 | Preparation method of copper chromite for laser etching chemical plating aid |
| CN115385377B (en) * | 2022-08-25 | 2023-10-24 | 湖南汇帮环保科技有限公司 | Preparation method of copper chromite for laser engraving chemical plating auxiliary |
| CN116212886A (en) * | 2022-12-29 | 2023-06-06 | 上海航天化工应用研究所 | Spherical copper-chromium composite metal oxide burning rate catalyst and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104138762A (en) | Preparation method and application of a cubic structure CuCr2O4 visible light photocatalyst | |
| CN106732524B (en) | Alpha/beta-bismuth oxide phase heterojunction photocatalyst and preparation method and application thereof | |
| CN103752332B (en) | Dried persimmon shape visible light catalyst BiOBr and preparation method thereof | |
| CN108311165B (en) | Preparation of BiOCl/SrFe12-xCoxO19Method for compounding magnetic photocatalytic material | |
| CN105289661B (en) | A kind of preparation method of bismuth oxychloride composite magnetic photochemical catalyst | |
| CN104383944B (en) | A kind of visible light photocatalyst Bi12O17Cl2 with laminated sheet microstructure and its preparation method | |
| CN107855130A (en) | A kind of solar energy fixed nitrogen photochemical catalyst and application thereof and preparation method | |
| CN105964250B (en) | It is a kind of with visible light-responded Ag10Si4O13Photochemical catalyst and its preparation method and application | |
| CN103395837B (en) | Preparation method of Bi12TiO20 powder | |
| CN110354865A (en) | A kind of preparation method of pucherite/manganese dioxide magnetic coupling photocatalysis-oxidation agent | |
| CN110605126A (en) | Preparation method and application of a hollow BiOCl@CeO2 nanocomposite material | |
| CN103316698A (en) | Preparation method of energy band-tunable solid solution BiOI-Bi5O7I nanosheet visible light photocatalytic material | |
| CN104907060A (en) | A preparation method of CeO2/TiO2 heterojunction nanoflowers | |
| CN110694627A (en) | A kind of Fe2O3 nano-ring photocatalyst and preparation method thereof | |
| CN107519903A (en) | Bismuth oxybromide-cadmium sulfide nano composite photocatalyst and preparation method thereof | |
| CN105668627A (en) | Nanometer NaBi(MoO4)2 and preparation method thereof | |
| CN107570179A (en) | A kind of TiO2The preparation method of/BiOCl hetero-junctions visible light catalysts | |
| CN107233902A (en) | A kind of hollow flower ball-shaped β Bi2O3/ BiOBr heterojunction photocatalysis materials and its preparation method and application | |
| CN108607540B (en) | Preparation method of niobium-doped bismuth tungstate photocatalytic material | |
| CN106582726A (en) | A kind of Bi4O5Br2 hollow sphere and its preparation method using microemulsion as template | |
| CN103433036B (en) | A kind of catalysis material Ag/AgMO 2and preparation method thereof | |
| CN107159220B (en) | Process for preparing copper-nickel doped nano zinc oxide photocatalytic material by hydrothermal method | |
| CN106881118B (en) | A kind of method of ion-exchange synthesis heterojunction photocatalyst | |
| CN109133144A (en) | A kind of preparation method of monodisperse ultra-small grain size ceria nano-crystalline | |
| CN105032394A (en) | Pucherite visible-light-driven photocatalyst, preparing method and application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141112 |