CN106622290B - ZnO-CdS composite material and preparation method and application - Google Patents
ZnO-CdS composite material and preparation method and application Download PDFInfo
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- CN106622290B CN106622290B CN201611163931.9A CN201611163931A CN106622290B CN 106622290 B CN106622290 B CN 106622290B CN 201611163931 A CN201611163931 A CN 201611163931A CN 106622290 B CN106622290 B CN 106622290B
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- 239000002131 composite material Substances 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 82
- 239000008367 deionised water Substances 0.000 claims abstract description 77
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 77
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 72
- 239000002105 nanoparticle Substances 0.000 claims abstract description 32
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000005119 centrifugation Methods 0.000 claims abstract description 16
- 239000002244 precipitate Substances 0.000 claims abstract description 15
- 239000000047 product Substances 0.000 claims abstract description 9
- 239000000725 suspension Substances 0.000 claims abstract description 8
- 230000008021 deposition Effects 0.000 claims abstract description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- LDDQLRUQCUTJBB-UHFFFAOYSA-N ammonium fluoride Chemical compound [NH4+].[F-] LDDQLRUQCUTJBB-UHFFFAOYSA-N 0.000 claims description 9
- 239000002243 precursor Substances 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 9
- 238000002242 deionisation method Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims 1
- 230000015556 catabolic process Effects 0.000 abstract description 12
- 238000006731 degradation reaction Methods 0.000 abstract description 12
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 abstract description 7
- 229960000907 methylthioninium chloride Drugs 0.000 abstract description 7
- 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 abstract description 7
- 229940043267 rhodamine b Drugs 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 6
- 238000002156 mixing Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 51
- 238000000151 deposition Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 206010001497 Agitation Diseases 0.000 description 4
- 206010013786 Dry skin Diseases 0.000 description 4
- 238000013019 agitation Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 230000001699 photocatalysis Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000004847 absorption spectroscopy Methods 0.000 description 2
- 239000011157 advanced composite material Substances 0.000 description 2
- XIEPJMXMMWZAAV-UHFFFAOYSA-N cadmium nitrate Chemical compound [Cd+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XIEPJMXMMWZAAV-UHFFFAOYSA-N 0.000 description 2
- -1 hydroxyl free radical Chemical class 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000000825 ultraviolet detection Methods 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Inorganic materials [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/02—Sulfur, selenium or tellurium; Compounds thereof
- B01J27/04—Sulfides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/03—Precipitation; Co-precipitation
- B01J37/031—Precipitation
- B01J37/035—Precipitation on carriers
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Luminescent Compositions (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention belongs to nanometer new material technology fields, and in particular to a kind of ZnO-CdS composite material and preparation method and application.The composite material is by CdS nanoparticle deposition in ZnO nano particle surface.Its preparation method is by Zn (NO3)2·6H2The deionized water solution and NH of O4After the mixing of F deionized water solution, NaOH deionized water solution is added dropwise thereto, it is translucent to be added dropwise to solution, and centrifugation obtains white precipitate, washs, and it is dry, obtain ZnO nano particle；ZnO nano particle is added to dissolved with Cd (NO3)2·4H2In the deionized water solution of O and thiocarbamide, suspension is formed, is deposited, centrifugation obtains ZnO-CdS product.Composite material of the invention is excellent to the light degradation ability of rhodamine B and methylene blue.
Description
Technical field
The invention belongs to nanometer new material technology fields, and in particular to a kind of ZnO-CdS composite material and preparation method
And application.
Background technique
ZnO is the wide bandgap semiconductor materials with high exciton bind energy, it has nontoxic, good biocompatibility, electrification
The advantages that activity is high and electron transport ability is strong is learned, is widely applied to solar battery, sensor, gas sensing in recent years
The fields such as device.But the broad-band gap of ZnO only allows it to absorb ultraviolet light, which has limited the utilizations of general light source.Current ZnO material
Material cannot effectively improve the utilization rate to light source and the light degradation ability to chemical substance.
Summary of the invention
ZnO-CdS composite material the object of the present invention is to provide a kind of pair of pollutant with excellent light degradation ability,
Present invention simultaneously provides preparation methods and application.
ZnO-CdS composite material of the present invention is: CdS nanoparticle deposition is in ZnO nano particle surface.
Wherein:
CdS nano particle diameter be 18~22nm, preferably 20nm, ZnO nano particle be fusiform, length be 380~
420nm, preferably 400nm.
The preparation method of the ZnO-CdS composite material, includes the following steps:
(1) by Zn (NO3)2·6H2The deionized water solution and NH of O4F deionized water solution is mixed to get precursor solution, to
NaOH aqueous solution is added dropwise in precursor solution, when beginning forms white precipitate, and it is translucent to be added dropwise to solution, 48~52 DEG C of stirrings muddinesses
9.5~10.5 hours, centrifugation obtained white precipitate, and deionized water, ethanol washing are finally dry at 55~65 DEG C, overnight,
Obtain ZnO nano particle；
(2) the ZnO nano particle of acquisition is added to dissolved with Cd (NO3)2·4H2In the deionized water solution of O and thiocarbamide
Suspension is formed, at 85~95 DEG C, deposition is after 0.4~0.6 hour, centrifugation, obtains ZnO-CdS product, and deionized water is washed,
It is dry at 75~85 DEG C.
It is preferred that following steps:
(1) by Zn (NO3)2·6H2The deionized water solution and NH of O4F deionized water solution is mixed to get precursor solution, to
NaOH aqueous solution is added dropwise in precursor solution, when beginning forms white precipitate, is added dropwise to that solution is translucent, and 50 DEG C of stirrings muddy 10 are small
When, centrifugation obtains white precipitate, and deionized water, ethanol washing are finally dry at 60 DEG C, overnight, obtain ZnO nano particle；
(2) the ZnO nano particle of acquisition is added to dissolved with Cd (NO3)2·4H2In the deionized water solution of O and thiocarbamide
Suspension is formed, at 90 DEG C, deposition is after 0.5 hour, centrifugation, obtains ZnO-CdS product, deionized water washing, at 80 DEG C
It is dry.
Zn(NO3)2·6H2The molar concentration of O deionized water solution is 0.25mol/L.
NH4The molar concentration of F deionized water solution is 2.0mol/L.
The molar concentration of NaOH aqueous solution is 2.0mol/L.
Zn(NO3)2·6H2O deionized water solution, NH4It is gone used in F deionized water solution, NaOH deionized water solution
The volume ratio of ionized water is 2:1:1.
Cd(NO3)2·4H2O is being dissolved with Cd (NO3)2·4H2Molar concentration in the deionized water solution of O and thiocarbamide is
0.01mol/L。
Thiocarbamide is being dissolved with Cd (NO3)2·4H2Molar concentration in the deionized water solution of O and thiocarbamide is 0.01mol/L.
Dissolved with Cd (NO3)2·4H2The volume mass ratio of deionized water and ZnO in the deionized water solution of O and thiocarbamide
For 5:2, deionized water is in terms of mL, and the quality of ZnO is in terms of mg.
The application of the ZnO-CdS composite material is: for rhodamine B degradation and methylene blue.
Beneficial effects of the present invention are as follows:
The present invention is optionally deposited CdS nano particle in ZnO nano particle surface, synthesizes a kind of promotion light degradation characteristic
Advanced composite material (ACM) ZnO-CdS.There is sensitization light reaction between CdS nano particle and pollutant, ZnO nano particle is in illumination
Lower hole occurs oxidation reaction and generates hydroxyl free radical, and conduction band electron and absorption oxygen occur reduction reaction and generates strong oxidizer, dirty
Dye object can be oxidized or by hydroxyl radicals attack.Since the level structure of ZnO and CdS match, which can increase light suction
Range is received, the separation of electron-hole pair is conducive to, and then effectively increases the utilization rate to illumination and the light drop to pollutant
Solution ability.
Detailed description of the invention
Fig. 1 is the photocatalytic mechanism figure of ZnO-CdS composite material.
Fig. 2 is ZnO scanning electron microscope (SEM) photograph prepared by embodiment 1.
Fig. 3 is ZnO-CdS scanning electron microscope (SEM) photograph prepared by embodiment 1.
Fig. 4 is the X-ray diffraction spectrogram in embodiment 1；
Wherein: A ZnO；B is ZnO-CdS.
Fig. 5 is the ultraviolet-visible absorption spectroscopy figure that ZnO-CdS prepared by embodiment 1 is used for rhodamine B degradation.
Fig. 6 is the ultraviolet-visible absorption spectroscopy figure that ZnO-CdS prepared by embodiment 1 is used for degradation of methylene blue.
Specific embodiment
The present invention is described further with reference to embodiments.
Embodiment 1
1.4875g Zn (NO3)2·6H2O is dissolved in 20mL deionized water, 0.7408g NH4F is dissolved in 10mL deionization
Water, 0.8002g NaOH are dissolved in 10mL deionized water.By by Zn (NO3)2·6H2O deionized water solution and NH4F deionized water
Solution is mixed to get precursor solution, and NaOH deionized water solution is then added dropwise.When a small amount of NaOH deionized water solution of dropwise addition
When, white precipitate is formed immediately, after all remaining NaOH deionized water solutions are further added dropwise, is partly dissolved, solution becomes
It is translucent.Then 10 hours muddy under 50 DEG C of constant agitations.White precipitate is harvested by centrifugation, then uses deionized water and second
Alcohol washing finally obtains ZnO nano particle overnight in 60 DEG C of dryings；
By 0.2364g Cd (NO3)2·4H2O and 0.0761g thiocarbamide is dissolved in 100mL deionized water and 40mgZnO nanometers
Particle mixing, to form suspension.After being deposited 0.5 hour in 90 DEG C of oil bath, by the way that ZnO-CdS product is collected by centrifugation, and
It is washed with deionized to remove soluble ion impurity, sample is dry at 80 DEG C in an oven.
Comparative example 1
1.4875g Zn (NO3)2·6H2O is dissolved in 20mL deionized water, 0.7408g NH4F is dissolved in 10mL deionization
Water, 0.8002g NaOH are dissolved in 10mL deionized water.By by Zn (NO3)2·6H2O deionized water solution and NH4F deionized water
Solution is mixed to get precursor solution, and NaOH deionized water solution is then added dropwise.When a small amount of NaOH deionized water solution of dropwise addition
When, white precipitate is formed immediately, after all remaining NaOH deionized water solutions are further added dropwise, is partly dissolved, solution becomes
It is translucent.Then 10 hours muddy under 50 DEG C of constant agitations.White precipitate is harvested by centrifugation, then uses deionized water and second
Alcohol washing finally obtains ZnO nano particle overnight in 60 DEG C of dryings；
By 0.2364g Cd (NO3)2·4H2O and 0.0761g thiocarbamide is dissolved in 100mL deionized water and 20mgZnO nanometers
Particle mixing, to form suspension.After being deposited 0.5 hour in 90 DEG C of oil bath, by the way that ZnO-CdS product is collected by centrifugation, and
It is washed with deionized to remove soluble ion impurity, sample is dry at 80 DEG C in an oven.
Comparative example 2
1.4875g Zn (NO3)2·6H2O is dissolved in 20mL deionized water, 0.7408g NH4F is dissolved in 10mL deionization
Water, 0.8002g NaOH are dissolved in 10mL deionized water.By by Zn (NO3)2·6H2O deionized water solution and NH4F deionized water
Solution is mixed to get precursor solution, and NaOH deionized water solution is then added dropwise.When a small amount of NaOH deionized water solution of dropwise addition
When, white precipitate is formed immediately, after all remaining NaOH deionized water solutions are further added dropwise, is partly dissolved, solution becomes
It is translucent.Then 10 hours muddy under 50 DEG C of constant agitations.White precipitate is harvested by centrifugation, then uses deionized water and second
Alcohol washing finally obtains ZnO nano particle overnight in 60 DEG C of dryings；
By 0.2364g Cd (NO3)2·4H2O and 0.0761g thiocarbamide is dissolved in 100mL deionized water and 60mgZnO nanometers
Particle mixing, to form suspension.After being deposited 0.5 hour in 90 DEG C of oil bath, by the way that ZnO-CdS product is collected by centrifugation, and
It is washed with deionized to remove soluble ion impurity, sample is dry at 80 DEG C in an oven.
Comparative example 3
1.4875g Zn (NO3)2·6H2O is dissolved in 20mL deionized water, 0.7408g NH4F is dissolved in 10mL deionization
Water, 0.8002g NaOH are dissolved in 10mL deionized water.By by Zn (NO3)2·6H2O deionized water solution and NH4F deionized water
Solution is mixed to get precursor solution, and NaOH deionized water solution is then added dropwise.When a small amount of NaOH deionized water solution of dropwise addition
When, white precipitate is formed immediately, after all remaining NaOH deionized water solutions are further added dropwise, is partly dissolved, solution becomes
It is translucent.Then 10 hours muddy under 100 DEG C of constant agitations.White precipitate is harvested by centrifugation, then with deionized water and
Ethanol washing finally obtains ZnO nano particle overnight in 60 DEG C of dryings；
By 0.2364g Cd (NO3)2·4H2O and 0.0761g thiocarbamide is dissolved in 100mL deionized water and 40mgZnO nanometers
Particle mixing, to form suspension.After being deposited 0.5 hour in 90 DEG C of oil bath, by the way that ZnO-CdS product is collected by centrifugation, and
It is washed with deionized to remove soluble ion impurity, sample is dry at 80 DEG C in an oven.
By depositing on ZnO nano particle surface for CdS nanoparticulate selective, design, which has synthesized, has photocatalytic
Spindle-shaped ZnO-CdS the composite material of energy is to the degradation to pollutant.The photocatalytic mechanism of composite material is as shown in Figure 1, CdS
Nano particle deposits to the surface ZnO by absorption, and ZnO-CdS composite material can be obviously improved the service efficiency of light, CdS and ZnO
Between position have an II type structure, the conduction band edge of ZnO is located between the conduction band and valence band of CdS, when CdS nano particle by
When excited by visible light, photoelectron can be transferred to the conduction band of ZnO and generate electron-hole pair, and such a II type structure promotes
The separation of photocurrent carrier.
Fig. 2, Fig. 3 are ZnO, ZnO-CdS electron microscope respectively.In Fig. 2, ZnO is that the fusiform with very bigger serface is received
Rice grain, particle length is in 400nm or so.In Fig. 3, ZnO relatively flat surface texture is blurred, and partial size remains unchanged,
Can clearly be observed that partial size 20nm or so CdS nanoparticle deposition on the surface ZnO.
Fig. 4 A is the XRD test result of spindle-shaped ZnO nano particle, the peak in comparison diagram, with ZnO (JCPDS 36-
1451) normal data of wurtzite structure matches, and does not detect additional peak, this shows the ZnO product of synthesis
With fabulous purity.By the XRD diagram of comparison diagram 4B ZnO-CdS nano particle, it is apparent that spreading out in addition to ZnO
It penetrates outside peak, 2 θ=26.79 ° of the angle of diffraction, 44.08 ° and 51.75 ° correspond respectively to cubic CdS (JCPDS 65-3414), table
Bright sample is by ZnO, CdS two parts composition.
Embodiment 2
The ZnO-CdS of preparation is used for rhodamine B degradation
Taking 100ml concentration in a reservoir is the rhodamine B solution of 8 μ g/ml, and the ZnO-CdS of 10mg is added, and to be protected from light stirring 1 small
When.Then it irradiates under 300W xenon lamp, is sampled since 0 minute, sampled every 5 minutes, take 8, then sampled every 10 minutes,
Two are taken, was finally sampled every 20 minutes, takes 3.
Samples taken is successively subjected to ultraviolet detection, as a result as shown in Figure 5.
Embodiment 3
The ZnO-CdS of preparation is used for degradation of methylene blue
Taking 100ml concentration in a reservoir is the methylene blue solution of 8 μ g/ml, and the ZnO-CdS that 10mg is added is protected from light stirring 1
Hour.Then it irradiates under 300W xenon lamp, is sampled since 0 minute, sampled every 5 minutes, take 8, then took every 10 minutes
Sample takes two, finally sampled every 20 minutes, takes 3.
Samples taken is successively subjected to ultraviolet detection, as a result as shown in Figure 6.
By Fig. 5 and Fig. 6 it is observed that apparent decline occurs in the characteristic peak of rhodamine B and methylene blue, this
It proves under illumination condition, ZnO-CdS nano material has apparent degradation for rhodamine B and methylene blue, therefore should
Material has the light degradation ability promoted.
Claims (7)
1. a kind of preparation method of ZnO-CdS composite material, which is characterized in that CdS nanoparticle deposition is in ZnO nano particle table
Face；CdS nano particle diameter is 18~22nm, and ZnO nano particle is fusiform, and length is 380~420nm；Including walking as follows
It is rapid:
(1) by Zn (NO3)2·6H2The deionized water solution and NH of O4F deionized water solution is mixed to get precursor solution, Xiang Qianti
NaOH deionized water solution is added dropwise in solution, when beginning forms white precipitate, is added dropwise to that solution is translucent, and 48~52 DEG C of stirrings are muddy
Turbid 9.5~10.5 hours, centrifugation obtained white precipitate, and deionized water, ethanol washing are finally dry at 55~65 DEG C, mistake
Night obtains ZnO nano particle；
(2) the ZnO nano particle of acquisition is added to dissolved with Cd (NO3)2·4H2It is formed in the deionized water solution of O and thiocarbamide
Suspension, at 85~95 DEG C, deposition is after 0.4~0.6 hour, centrifugation, obtains ZnO-CdS product, deionized water washing, in 75
It is dry at~85 DEG C.
2. the preparation method of ZnO-CdS composite material according to claim 1, which is characterized in that Zn (NO3)2·6H2O is gone
The molar concentration of deionized water solution is 0.25mol/L.
3. the preparation method of ZnO-CdS composite material according to claim 1, which is characterized in that NH4F deionized water solution
Molar concentration be 2.0mol/L.
4. the preparation method of ZnO-CdS composite material according to claim 1, which is characterized in that NaOH deionization is water-soluble
The molar concentration of liquid is 2.0mol/L.
5. the preparation method of ZnO-CdS composite material according to claim 1, which is characterized in that Zn (NO3)2·6H2O is gone
Deionized water solution, NH4The volume ratio of deionized water used in F deionized water solution, NaOH deionized water solution is 2:1:1.
6. the preparation method of ZnO-CdS composite material according to claim 1, which is characterized in that Cd (NO3)2·4H2O exists
Dissolved with Cd (NO3)2·4H2Molar concentration in the deionized water solution of O and thiocarbamide is 0.01mol/L, and thiocarbamide is being dissolved with Cd
(NO3)2·4H2Molar concentration in the deionized water solution of O and thiocarbamide is 0.01mol/L.
7. the preparation method of ZnO-CdS composite material according to claim 1, which is characterized in that be dissolved with Cd (NO3)2·
4H2The volume mass ratio of deionized water and ZnO in the deionized water solution of O and thiocarbamide is 5:2, and deionized water is in terms of mL, ZnO
Quality in terms of mg.
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| CN109759083A (en) * | 2019-02-26 | 2019-05-17 | 新疆大学 | A kind of photochemical catalyst with the photoresponse of ultraviolet-visible wide spectrum of efficient stable |
| CN110606502A (en) * | 2019-10-16 | 2019-12-24 | 江苏巨珩新材料科技有限公司 | Preparation method of self-cleaning surface with photocatalysis synergistic effect |
| CN114720521A (en) * | 2022-03-30 | 2022-07-08 | 辽宁大学 | Cd (cadmium)2+Preparation method of ZnO formaldehyde gas sensor material with ion adsorption function |
| CN115025787B (en) * | 2022-05-24 | 2023-10-13 | 西南科技大学 | Preparation method and application of CdS nanoparticle-doped coated ZnO nanoflower powder |
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