CN107522173A - CdSe quantum dots photochemical catalyst and preparation method thereof - Google Patents
CdSe quantum dots photochemical catalyst and preparation method thereof Download PDFInfo
- Publication number
- CN107522173A CN107522173A CN201610459359.4A CN201610459359A CN107522173A CN 107522173 A CN107522173 A CN 107522173A CN 201610459359 A CN201610459359 A CN 201610459359A CN 107522173 A CN107522173 A CN 107522173A
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- China
- Prior art keywords
- preparation
- quantum dots
- cdse quantum
- photochemical catalyst
- selenium
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- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical class [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000003054 catalyst Substances 0.000 title claims abstract description 21
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052711 selenium Inorganic materials 0.000 claims abstract description 22
- 239000011669 selenium Substances 0.000 claims abstract description 22
- 238000005984 hydrogenation reaction Methods 0.000 claims abstract description 19
- 239000000243 solution Substances 0.000 claims abstract description 13
- 239000011259 mixed solution 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- OISMQLUZKQIKII-UHFFFAOYSA-L dichlorocadmium;hydrate Chemical compound O.[Cl-].[Cl-].[Cd+2] OISMQLUZKQIKII-UHFFFAOYSA-L 0.000 claims abstract description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 11
- DKIDEFUBRARXTE-UHFFFAOYSA-N 3-mercaptopropanoic acid Chemical class OC(=O)CCS DKIDEFUBRARXTE-UHFFFAOYSA-N 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000002243 precursor Substances 0.000 claims description 5
- 229910000033 sodium borohydride Inorganic materials 0.000 claims description 5
- 239000012279 sodium borohydride Substances 0.000 claims description 5
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 5
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 4
- 229910052793 cadmium Inorganic materials 0.000 claims description 3
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000006185 dispersion Substances 0.000 abstract description 3
- PMNLUUOXGOOLSP-UHFFFAOYSA-N 2-mercaptopropanoic acid Chemical class CC(S)C(O)=O PMNLUUOXGOOLSP-UHFFFAOYSA-N 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- ZAIPMKNFIOOWCQ-UEKVPHQBSA-N cephalexin Chemical compound C1([C@@H](N)C(=O)N[C@H]2[C@@H]3N(C2=O)C(=C(CS3)C)C(O)=O)=CC=CC=C1 ZAIPMKNFIOOWCQ-UEKVPHQBSA-N 0.000 description 3
- 229940106164 cephalexin Drugs 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002086 nanomaterial Substances 0.000 description 3
- 230000001699 photocatalysis Effects 0.000 description 3
- 238000007146 photocatalysis Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002159 nanocrystal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- WGPCGCOKHWGKJJ-UHFFFAOYSA-N sulfanylidenezinc Chemical compound [Zn]=S WGPCGCOKHWGKJJ-UHFFFAOYSA-N 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B19/00—Selenium; Tellurium; Compounds thereof
- C01B19/007—Tellurides or selenides of metals
-
- 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
- B01J27/057—Selenium or tellurium; Compounds thereof
- B01J27/0573—Selenium; Compounds thereof
-
- B01J35/39—
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/22—Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability
Abstract
This application discloses a kind of CdSe quantum dots photochemical catalyst and preparation method thereof, the preparation method includes：(1), prepare selenium hydrogenation and receive presoma；(2) mixed solution, regulation pH value of solution to 7~8, by chloride hydrate cadmium, the dissolving of 3 mercaptopropionic acids in deionized water, are formed；(3) selenium hydrogenation, is added in mixed solution and receives presoma, react 30~35 minutes at 160~170 DEG C, acquisition target product.CdSe quantum dots granular size that the present invention obtains is homogeneous, good dispersion, and purity is high, well-crystallized.
Description
Technical field
The application belongs to field of waste water treatment, more particularly to a kind of CdSe quantum dots photochemical catalyst and its preparation side
Method.
Background technology
Cadmium selenide is the direct band-gap semicondictor material that energy gap is 1.7eV, has cubic zinc blende and six side's fibre zinc
It two kinds of crystal structures of ore deposit, wherein cube phase structure is metastable state, can be only present in lower temperature, be changed into hexagonal phase knot during high temperature
Structure.Cadmium selenide at normal temperatures can simultaneously exist cube and six sides, two kinds of crystalline phases.Cadmium selenide nano-crystal is ground in semiconductor nano
Study carefully most extensively, the best a kind of II-VI group semiconductor nano of application prospect, because it has important optically nonlinearity
Matter, luminosity and other physicochemical characteristics and enjoy attracting attention for common people.As a kind of very important semi-conducting material,
Through in various light-emitting devices, laser and infrared detector, the neck such as infrared window and nonlinear optical material and light sensor
The wide application prospect of domain views.Particularly cadmium selenide can absorb visible ray well, thus it is photochemical catalyst
Preferred material.
Cadmium selenide easily photoetch, photostability is poor, and the light absorbs threshold value of titanium dioxide is confined to ultraviolet light and gone, sun profit
Low with rate, these deficiencies strongly limit the performance of their performances.
The content of the invention
It is an object of the invention to provide a kind of CdSe quantum dots photochemical catalyst and preparation method thereof, to overcome existing skill
Deficiency in art.
To achieve the above object, the present invention provides following technical scheme：
The embodiment of the present application discloses a kind of CdSe quantum dots photochemical catalyst, and in the catalyst, the mol ratio of selenium and cadmium is
8:5。
Accordingly, disclosed herein as well is a kind of preparation method of CdSe quantum dots photochemical catalyst, including：
(1), prepare selenium hydrogenation and receive presoma；
(2), by chloride hydrate cadmium, 3- mercaptopropionic acids dissolving in deionized water, formed mixed solution, regulation pH value of solution to
7~8；
(3) selenium hydrogenation, is added in mixed solution and receives presoma, react 30~35 minutes at 160~170 DEG C, acquisition
Target product.
Preferably, in the preparation method of above-mentioned CdSe quantum dots photochemical catalyst, in step (2), sodium hydroxide is used
PH value of solution is adjusted to 7~8.
Preferably, in the preparation method of above-mentioned CdSe quantum dots photochemical catalyst, in step (2), chloride hydrate cadmium
It is with 3- mercaptopropionic acid mol ratios：1:(1.5~1.7).
Preferably, in the preparation method of above-mentioned CdSe quantum dots photochemical catalyst, in step (1), before selenium hydrogenation is received
Drive the preparation method of body：By sodium borohydride and selenium powder according to 1:(7~8) mol ratio is dissolved in deionized water, in logical nitrogen bar
Mixed under part, obtain selenium hydrogenation and receive precursor solution.
Compared with prior art, the advantage of the invention is that：CdSe quantum dots granular size that the present invention obtains is homogeneous,
Good dispersion, purity is high, well-crystallized.
Embodiment
The present invention is described further by the following example：According to following embodiments, the present invention may be better understood.
However, as it will be easily appreciated by one skilled in the art that specific material ratio, process conditions and its result described by embodiment are only used
In the explanation present invention, without should be also without limitation on the present invention described in detail in claims.
Embodiment 1
The preparation method of CdSe quantum dots photochemical catalyst
(1) preparation of presoma is received in, selenium hydrogenation：
By sodium borohydride and selenium powder according to 1:7.1 mol ratios dissolve in deionized water, mix, obtain under logical condition of nitrogen gas
Precursor solution is received to selenium hydrogenation.
(2), by chloride hydrate cadmium, 3- mercaptopropionic acids (stabilizer) according to 1:1.5 mol ratios dissolve in deionized water, shape
Into mixed solution, with sodium hydrate regulator solution pH to 7；
(3) selenium hydrogenation, is added in mixed solution and receives presoma, is reacted 30 minutes at 160 DEG C.
XRD and XPS shows that synthesized nano material is cadmium selenide.In the cadmium selenide, the mol ratio of selenium and cadmium is
8:5。
The CdSe quantum dots granular size of acquisition is homogeneous, good dispersion, and purity is high, well-crystallized.
Cefalexin waste water is degraded under ultra violet lamp, after photocatalysis 60 minutes, degradation rate reach 70% with
On.
Embodiment 2
The preparation method of CdSe quantum dots photochemical catalyst
(1) preparation of presoma is received in, selenium hydrogenation：
By sodium borohydride and selenium powder according to 1:7.3 mol ratios dissolve in deionized water, mix, obtain under logical condition of nitrogen gas
Precursor solution is received to selenium hydrogenation.
(2), by chloride hydrate cadmium, 3- mercaptopropionic acids (stabilizer) according to 1:1.67 mol ratios dissolve in deionized water,
Mixed solution is formed, with sodium hydrate regulator solution pH to 7；
(3) selenium hydrogenation, is added in mixed solution and receives presoma, is reacted 35 minutes at 165 DEG C.
XRD and XPS shows that synthesized nano material is cadmium selenide.
Cefalexin waste water is degraded under ultra violet lamp, after photocatalysis 60 minutes, degradation rate reaches 67%.
Embodiment 3
The preparation method of CdSe quantum dots photochemical catalyst
(1) preparation of presoma is received in, selenium hydrogenation：
By sodium borohydride and selenium powder according to 1:7.8 mol ratios dissolve in deionized water, mix, obtain under logical condition of nitrogen gas
Precursor solution is received to selenium hydrogenation.
(2), by chloride hydrate cadmium, 3- mercaptopropionic acids (stabilizer) according to 1:1.55 mol ratios dissolve in deionized water,
Mixed solution is formed, with sodium hydrate regulator solution pH to 7；
(3) selenium hydrogenation, is added in mixed solution and receives presoma, is reacted 30 minutes at 160 DEG C.
XRD and XPS shows that synthesized nano material is cadmium selenide.
Cefalexin waste water is degraded under ultra violet lamp, after photocatalysis 60 minutes, degradation rate reach 72% with
On.
Finally, it is to be noted that, term " comprising ", "comprising" or its any other variant be intended to it is non-exclusive
Property includes, so that process, method, article or equipment including a series of elements not only include those key elements, and
Also include the other element that is not expressly set out, or also include for this process, method, article or equipment inherently
Key element.
Claims (5)
1. a kind of CdSe quantum dots photochemical catalyst, it is characterised in that in the catalyst, the mol ratio of selenium and cadmium is 8:5.
A kind of 2. preparation method of CdSe quantum dots photochemical catalyst, it is characterised in that including：
(1), prepare selenium hydrogenation and receive presoma；
(2), by chloride hydrate cadmium, the dissolving of 3- mercaptopropionic acids in deionized water, formation mixed solution, regulation pH value of solution to 7~
8；
(3) selenium hydrogenation, is added in mixed solution and receives presoma, react 30~35 minutes at 160~170 DEG C, acquisition target
Product.
3. the preparation method of CdSe quantum dots photochemical catalyst according to claim 2, it is characterised in that：In step (2),
With sodium hydrate regulator solution pH to 7~8.
4. the preparation method of CdSe quantum dots photochemical catalyst according to claim 2, it is characterised in that：In step (2),
Chloride hydrate cadmium and 3- mercaptopropionic acid mol ratios are：1:(1.5~1.7).
5. the preparation method of CdSe quantum dots photochemical catalyst according to claim 2, it is characterised in that：In step (1),
The preparation method of presoma is received in selenium hydrogenation：By sodium borohydride and selenium powder according to 1:(7~8) mol ratio dissolves in deionized water,
Mixed under logical condition of nitrogen gas, obtain selenium hydrogenation and receive precursor solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610459359.4A CN107522173A (en) | 2016-06-22 | 2016-06-22 | CdSe quantum dots photochemical catalyst and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610459359.4A CN107522173A (en) | 2016-06-22 | 2016-06-22 | CdSe quantum dots photochemical catalyst and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107522173A true CN107522173A (en) | 2017-12-29 |
Family
ID=60734282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610459359.4A Withdrawn CN107522173A (en) | 2016-06-22 | 2016-06-22 | CdSe quantum dots photochemical catalyst and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107522173A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101503185A (en) * | 2009-03-06 | 2009-08-12 | 武汉理工大学 | One-step preparing method for fluorescence spectrum adjustable water-soluble cadmium selenide quantum dot |
| CN101704516A (en) * | 2009-11-27 | 2010-05-12 | 华东师范大学 | Method for synthesizing quantum dot with uniform size distribution in aqueous phase |
| CN103506139A (en) * | 2013-03-14 | 2014-01-15 | 江苏大学 | Preparation method and application of hydrothermal synthesized CdSe quantum dot photocatalyst |
| CN103537302A (en) * | 2013-10-01 | 2014-01-29 | 大连理工大学 | Method for preparing compound nanometer photocatalyst by adopting CdSe quantum dot |
| CN103736504A (en) * | 2013-12-24 | 2014-04-23 | 江苏大学 | Preparation and application of metal ion doped CdSe quantum dot photocatalyst |
-
2016
- 2016-06-22 CN CN201610459359.4A patent/CN107522173A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101503185A (en) * | 2009-03-06 | 2009-08-12 | 武汉理工大学 | One-step preparing method for fluorescence spectrum adjustable water-soluble cadmium selenide quantum dot |
| CN101704516A (en) * | 2009-11-27 | 2010-05-12 | 华东师范大学 | Method for synthesizing quantum dot with uniform size distribution in aqueous phase |
| CN103506139A (en) * | 2013-03-14 | 2014-01-15 | 江苏大学 | Preparation method and application of hydrothermal synthesized CdSe quantum dot photocatalyst |
| CN103537302A (en) * | 2013-10-01 | 2014-01-29 | 大连理工大学 | Method for preparing compound nanometer photocatalyst by adopting CdSe quantum dot |
| CN103736504A (en) * | 2013-12-24 | 2014-04-23 | 江苏大学 | Preparation and application of metal ion doped CdSe quantum dot photocatalyst |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
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Application publication date: 20171229 |