CN101491769A - Strontium carbonate with visible photoresponse and preparation method thereof - Google Patents
Strontium carbonate with visible photoresponse and preparation method thereof Download PDFInfo
- Publication number
- CN101491769A CN101491769A CNA2009100681308A CN200910068130A CN101491769A CN 101491769 A CN101491769 A CN 101491769A CN A2009100681308 A CNA2009100681308 A CN A2009100681308A CN 200910068130 A CN200910068130 A CN 200910068130A CN 101491769 A CN101491769 A CN 101491769A
- Authority
- CN
- China
- Prior art keywords
- strontium carbonate
- oxide
- strontium
- photochemical catalyst
- sulfide
- 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
Images
Landscapes
- Catalysts (AREA)
Abstract
The invention relates to a strontium carbonate photocatalyst with visible light response and a preparation method thereof, and belongs to the field of inorganic nano photocatalysis materials. The catalyst consists of one or more of nano strontium carbonate or strontium carbonate and metal oxides, and metal sulfide semiconductor, wherein the nano metal oxides and the metal sulfide semiconductor are titanium dioxide, nickel oxide, calcium oxide, zinc oxide, cadmium oxide, zinc sulfide, cadmium sulfide, indium sulfide, indium trioxide and bismuth trisulfide. The photocatalyst prepared by the method has photocatalysis activity in a wider wavelength range, and can optically decompose, purify and treat toxic and harmful chemical substances under the radiation of ultraviolet light, visible light or natural light.
Description
Technical field
The present invention relates to a kind of photochemical catalyst, particularly relate to a kind of visible light-responded photochemical catalyst that has.
The invention still further relates to above-mentioned Preparation of catalysts method.
The invention still further relates to the purposes of above-mentioned catalyst.
Background technology
The environment and the energy are the significant problems that the 21 century mankind face and need to be resolved hurrily, photocatalysis is with its room temperature deep reaction and directly utilize solar energy to drive special performances such as reaction as light source, become a kind of ideal environment pollution control technology and clear energy sources production technology, the research of photochemical catalyst has been strengthened day by day based on these people.In the research report of at present relevant photocatalytic degradation, the ultra-violet radiation of using artificial light source is remarkable to the decomposing organic matter effect, but expense is higher, and needs consumed power.Therefore; both at home and abroad the researcher all proposes to develop the technology that lamp or nature, artificial light source combine; make full use of the regenerative resource of cleaning, the solar energy utilization is combined with environmental protection, the advantage of performance photocatalytic degradation in environmental pollution improvement.Existing catalyst has been difficult to address that need, the way of its solution, and the one, existing catalyst is improved, develop alternative new catalyst besides, be the effective way that addresses this problem.In recent years, the research of the photocatalysis treatment organic pollution that is catalyst with the semiconductor or the modification semiconductor of visible light sensitivity just is being subjected to various countries scientific worker's concern, and has become one of their main direction of studying.These semiconductors comprise metal, oxide and composite oxides or the combination between them.Except semiconductor light-catalyst, delivered to go back aquatic foods with carbonate at present as the document of photochemical catalyst be report.
Strontium carbonate, density are 3.70g/cm
3Fusing point is 1497 ℃, and outward appearance is colourless orthorhombic system, white fine-powder.Strontium carbonate is mainly used in aspects such as color picture tube production (can absorb X ray and improve image definition and stability), magnetic material, optical glass, pottery, coating; Strontium carbonate also is the main raw material(s) of preparation Preparation of Metallic Strontium and multiple strontium salt; Strontium carbonate also is widely used in industries such as medicine, chemical reagent, pigment, coating, pyrotechnics, electric capacity and signal flare.Aspect catalysis, can be used as the sensor of check minimum gas and the catalyst of CO oxidation reaction.
The strontium carbonate preparation method mainly contains three kinds, and the one, soluble strontium salt precipitation method: with SrCl
2Or Sr (NO
3)
2Be raw material, use NH
4CO
3Be precipitating reagent, obtain strontium carbonate; The 2nd, hydro-thermal method: with strontium salt and carbonate is the feedstock production strontium carbonate, and this method can be controlled strontium carbonate pattern and yardstick; The 3rd, high-temperature roasting method: with Sr (OH)
2Be precursor, feed CO
2The gas carbonization obtains strontium carbonate.
Summary of the invention
Meaning of the present invention is to provide a kind of visible light-responded photochemical catalyst that has, and this carbonate photochemical catalyst can keep good stable and advantages of high catalytic activity again effectively by excited by visible light, and preparation technology is simple, with low cost simultaneously.
Photochemical catalyst provided by the invention is made up of strontium carbonate or strontium carbonate and conductor oxidate, sulfide grain, it is characterized in that this catalyst is to be mixed by one or more compositions in strontium carbonate or strontium carbonate and titanium dioxide, nickel oxide, calcium oxide, zinc oxide, cadmium oxide, zinc sulphide, cadmium sulfide, indium sulfide, indium sesquioxide, the bismuth trisulfide.The mol ratio of strontium ion and other metal ion is 0.1～5: 1, and strontium carbonate and oxide, sulfide particles diameter are between 5 nanometers to 10 micron.
Preparation method with visible light-responded strontium carbonate photochemical catalyst of the present invention is as follows:
With the strontium hydroxide is precursor preparation strontium carbonate photochemical catalyst: a certain amount of soluble strontium salt is dissolved in the 100ml distilled water, it is complete to precipitation to add a certain amount of NaOH then, behind the vigorous stirring 10min, with the precipitation suction filtration that produces, use distilled water and absolute ethanol washing successively, 120 ℃ of dry 3h obtain the strontium hydroxide precursor then.At last precursor 500～1000 ℃ of roasting 1～6h in air are obtained final catalyst.With strontium oxide strontia precursor preparation strontium carbonate photochemical catalyst: with a certain amount of strontium oxide strontia precursor directly in air 500～1000 ℃ of roasting 1～6h obtain catalyst.Strontium salt direct heat is decomposed preparation strontium carbonate photochemical catalyst: with a certain amount of easy decomposition strontium salt (as strontium nitrate, strontium oxalate and strontium acetate etc.) precursor directly in air 500～1000 ℃ of roasting 1～6h obtain catalyst.Composite photo-catalyst preparation method: by 0.1～5: 1 mol ratio is mixed one or more compositions in a certain amount of strontium carbonate and titanium dioxide, nickel oxide, calcium oxide, zinc oxide, cadmium oxide, zinc sulphide, cadmium sulfide, indium sulfide, indium sesquioxide, the bismuth trisulfide and grind and obtains composite photo-catalyst.
Of the present invention have visible light-responded photochemical catalyst and can be used for the organic pollution in air, waste water, surface water and the drinking water and the photocatalysis treatment of heavy metal ion.
Description of drawings
Fig. 1 is SrCO
3The x-ray diffractogram of powder spectrum of photochemical catalyst (by preparation in the embodiment 2).
Specify effect of the present invention below in conjunction with accompanying drawing. The photocatalytic activity of degradation of methylene blue test concrete grammar and condition are as follows under visible radiation:
The Photocatalytic oxidation activity of catalyst is to carry out in homemade photo catalysis reactor. (λ＞420nm) is radiating light source, and reactant liquor is 250mL 10mgL to adopt the 300W xenon lamp-1Aqueous solution of methylene blue, the catalyst addition is 1.0g. Under violent stirring, extract a small amount of reactant liquor every 30min, measure solution absorbance at the 665nm place. Determine solution concentration according to the concentration of methylene blue-absorbance calibration curve again.
Specific embodiments
Embodiment 1
The strontium nitrate of 0.1mol is dissolved in the 100ml distilled water, adds the NaOH of 0.2mol then, behind the vigorous stirring 30min, with the white precipitate suction filtration that produces, use distilled water and absolute ethanol washing successively, 120 ℃ of dry 3h obtain precursor then.At last with precursor at 650 ℃ of roasting 6h, obtain photochemical catalyst after the cooling.
Embodiment 2
Precursor in the embodiment 1 at 700 ℃ of roasting 6h, is obtained photochemical catalyst after the cooling.
Embodiment 3
Precursor in the embodiment 1 at 800 ℃ of roasting 6h, is obtained photochemical catalyst after the cooling.
Embodiment 4
The 5g strontium oxide strontia at 650 ℃ of roasting 6h, is obtained photochemical catalyst after the cooling.
Embodiment 5
The 5g strontium oxide strontia at 700 ℃ of roasting 6h, is obtained photochemical catalyst after the cooling.
Embodiment 6
The 5g strontium oxide strontia at 800 ℃ of roasting 6h, is obtained photochemical catalyst after the cooling.
Embodiment 7
The 5g strontium oxalate at 700 ℃ of roasting 6h, is obtained photochemical catalyst after the cooling.
Embodiment 8
The 5g strontium acetate at 700 ℃ of roasting 6h, is obtained photochemical catalyst after the cooling.
Embodiment 9
The 5g strontium nitrate at 700 ℃ of roasting 6h, is obtained photochemical catalyst after the cooling.
Strontium carbonate in the embodiment 2 and 1: 1 in molar ratio mechanical mixture of commercial titanium dioxide (P25) and be ground to and mix, obtain composite photo-catalyst.
The prepared photochemical catalyst of the present invention can be carried on the carrier, the invention is not restricted to above embodiment.
Gained photochemical catalyst in the embodiment light-catalyzed reaction test under the radiation of visible light, concrete outcome such as table 1 have been carried out.
The catalytic performance of table 1 strontium carbonate photochemical catalyst
| Sample number into spectrum | Precursor | Sintering temperature | Temperature retention time | Visible radiation 3h methylene blue degradation rate |
| Embodiment 1 | Strontium hydroxide | 650℃ | 6h | 18％ |
| Embodiment 2 | Strontium hydroxide | 700℃ | 6h | 99％ |
| Embodiment 3 | Strontium hydroxide | 800℃ | 6h | 65％ |
| Embodiment 4 | Strontium oxide strontia | 650℃ | 6h | 23％ |
| Embodiment 5 | Strontium oxide strontia | 700℃ | 6h | 97％ |
| Embodiment 6 | Strontium oxide strontia | 800℃ | 6h | 71％ |
| Embodiment 7 | Strontium oxalate | 700℃ | 6h | 94％ |
| Embodiment 8 | Strontium acetate | 700℃ | 6h | 96％ |
| Embodiment 9 | Strontium nitrate | 700℃ | 6h | 92％ |
| |
Strontium carbonate/titanium dioxide | 700℃ | 6h | 100％ |
Claims (4)
1. visible light-responded strontium carbonate photochemical catalyst, composition comprises strontium carbonate, and the composition that it is characterized in that this photochemical catalyst is strontium carbonate or also comprises in titanium dioxide, nickel oxide, calcium oxide, zinc oxide, cadmium oxide, zinc sulphide, cadmium sulfide, indium sulfide, indium sesquioxide, the bismuth trisulfide one or more; The mol ratio of strontium ion and other metal ion is 0.1～5: 1; Strontium carbonate, oxide and sulfide diameter are between 5 nanometers to 10 micron.
2. according to a kind of photochemical catalyst of claim 1, it is characterized in that: light reaction is carried out under visible light, ultraviolet light and sunshine.
3. a method for preparing the described photochemical catalyst of claim 1 adopts high-temperature roasting method and mechanical mixing production technology in the air, it is characterized in that the sintering temperature in this method is 500～1000 ℃, and temperature retention time is 1～6 hour.
4. be used for the organic pollution of air, waste water, surface water and drinking water and the photocatalysis treatment of heavy metal ion according to the described photochemical catalyst of above-mentioned each claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100681308A CN101491769A (en) | 2009-03-16 | 2009-03-16 | Strontium carbonate with visible photoresponse and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100681308A CN101491769A (en) | 2009-03-16 | 2009-03-16 | Strontium carbonate with visible photoresponse and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101491769A true CN101491769A (en) | 2009-07-29 |
Family
ID=40922662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100681308A Pending CN101491769A (en) | 2009-03-16 | 2009-03-16 | Strontium carbonate with visible photoresponse and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101491769A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069003A (en) * | 2009-11-23 | 2011-05-25 | 中国科学院福建物质结构研究所 | Novel carbonate optical catalyst and preparation method thereof |
| CN102240542A (en) * | 2011-04-13 | 2011-11-16 | 桂林理工大学 | Visible-light-responsive composite oxide photochemical catalyst Li2SrNb(2-x)TaxO7 and preparation method thereof |
| CN103673115A (en) * | 2013-12-25 | 2014-03-26 | 安徽宾肯电气有限公司 | Purifying machine for severely-polluted public indoor building |
| CN103752302A (en) * | 2013-12-31 | 2014-04-30 | 范崇政 | Nanometer photo-catalyst for killing blue-green algae in water |
| CN103785131A (en) * | 2014-02-18 | 2014-05-14 | 齐鲁工业大学 | Method for catalytically degrading organic pollutants |
| CN103861620A (en) * | 2014-03-07 | 2014-06-18 | 武汉理工大学 | Carbon quantum dot, precious metal and zinc indium sulfide composite photocatalyst and preparation method thereof |
| CN112827502A (en) * | 2020-12-30 | 2021-05-25 | 西安交通大学 | Composite catalyst body, method and system for in-situ elimination of carbon deposition of methane and carbon dioxide reforming catalyst |
| CN115888676A (en) * | 2022-09-28 | 2023-04-04 | 电子科技大学长三角研究院(湖州) | Composition for inhibiting decomposition of nitrate and preparation method thereof |
-
2009
- 2009-03-16 CN CNA2009100681308A patent/CN101491769A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069003A (en) * | 2009-11-23 | 2011-05-25 | 中国科学院福建物质结构研究所 | Novel carbonate optical catalyst and preparation method thereof |
| CN102240542A (en) * | 2011-04-13 | 2011-11-16 | 桂林理工大学 | Visible-light-responsive composite oxide photochemical catalyst Li2SrNb(2-x)TaxO7 and preparation method thereof |
| CN103673115A (en) * | 2013-12-25 | 2014-03-26 | 安徽宾肯电气有限公司 | Purifying machine for severely-polluted public indoor building |
| CN103752302A (en) * | 2013-12-31 | 2014-04-30 | 范崇政 | Nanometer photo-catalyst for killing blue-green algae in water |
| CN103785131A (en) * | 2014-02-18 | 2014-05-14 | 齐鲁工业大学 | Method for catalytically degrading organic pollutants |
| CN103785131B (en) * | 2014-02-18 | 2016-03-02 | 齐鲁工业大学 | A kind of method of catalyze and degrade organic pollutants |
| CN103861620A (en) * | 2014-03-07 | 2014-06-18 | 武汉理工大学 | Carbon quantum dot, precious metal and zinc indium sulfide composite photocatalyst and preparation method thereof |
| CN103861620B (en) * | 2014-03-07 | 2015-12-02 | 武汉理工大学 | A kind of carbon quantum dot, noble metal and indium sulfide zinc composite photo-catalyst and preparation method thereof |
| CN112827502A (en) * | 2020-12-30 | 2021-05-25 | 西安交通大学 | Composite catalyst body, method and system for in-situ elimination of carbon deposition of methane and carbon dioxide reforming catalyst |
| CN115888676A (en) * | 2022-09-28 | 2023-04-04 | 电子科技大学长三角研究院(湖州) | Composition for inhibiting decomposition of nitrate and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101491769A (en) | Strontium carbonate with visible photoresponse and preparation method thereof | |
| CN102631949B (en) | Modified visible-light responsive titania doped photocatalyst and production method and uses thereof | |
| CN107497456B (en) | Preparation method and application of layered bismuth oxychloride visible-light-driven photocatalyst | |
| CN104258886B (en) | A kind of silver orthophosphate/oxygen vacancies type titanium dioxide composite photocatalyst and preparation method | |
| CN105749893A (en) | Preparation method of modified active carbon fiber with surface-loaded nanometer titanium dioxide (TiO2) | |
| CN104056619B (en) | One utilizes WO3with rare-earth metals La to photocatalyst TiO2the method being modified | |
| CN105170130A (en) | Preparation method and application of high-dispersion CeO2 modified TiO2 meso-porous photocatalyst | |
| CN104001519B (en) | A kind of Room Temperature Solid State one-step method prepares Cu 2o/Bi 2o 3the method of nano composite photo-catalyst | |
| CN102824921A (en) | Preparation method of Ag2S/Ag3PO4 composite photocatalyst | |
| CN105664920A (en) | Cs2W3O10 (cesium tungstate) powder, preparation method and application thereof | |
| CN103894177A (en) | Method for synthesizing rare earth doped potassium titanate powder with photocatalytic activity | |
| CN101502792B (en) | Inorganic sensitized visible-light responsive photocatalyst and preparation method thereof | |
| CN104226340B (en) | Visible light nano composite photo-catalyst AgCl-SnO 2preparation method | |
| CN102600865B (en) | Photocatalyst for degrading organic dye waste water pollutants and preparation method thereof | |
| CN103599810A (en) | Preparation and application of Sr<2+>-doped TiO2 composite hollow sphere photocatalyst | |
| CN100493708C (en) | High-activity phosphor doped peptide oxide light catalyst, its production and use | |
| CN101491770B (en) | Strontium carbonate- titanium dioxide composite photocatalyst with visible phtoresponse and preparation method thereof | |
| CN103721699A (en) | NaInO2 photocatalyst and preparation method thereof | |
| CN101857390A (en) | Composite powder with antibacterial and heat insulation functions and preparation method and purposes thereof | |
| CN104549222A (en) | Preparation method and application of visible-light-induced photocatalyst chromium chromate | |
| CN100503036C (en) | Cation S and anion N doped one-dimensional nano-structured Ti0* photocatalyst and method of producing the same | |
| CN107961785B (en) | Preparation method and application of high-activity bismuth chromate nano photocatalyst | |
| CN110227458B (en) | Copper-doped mesoporous titanium dioxide composite material and application thereof | |
| CN111790409A (en) | Lanthanum oxide-bismuth-rich bismuth oxyiodide composite material and preparation method thereof | |
| CN102962075A (en) | Copper-doped ZnSnO3 visible light photocatalyst and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20090729 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |