CN103611528A - Method for preparing bismuth tungstate catalyst by taking egg white as template - Google Patents
Method for preparing bismuth tungstate catalyst by taking egg white as template Download PDFInfo
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- CN103611528A CN103611528A CN201310644506.1A CN201310644506A CN103611528A CN 103611528 A CN103611528 A CN 103611528A CN 201310644506 A CN201310644506 A CN 201310644506A CN 103611528 A CN103611528 A CN 103611528A
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Abstract
The invention discloses a method for preparing a bismuth tungstate catalyst by taking egg white as a template. The technical scheme has the following key points: the bismuth tungstate catalyst is prepared by taking egg white as a biological template and has a sheet-shaped structure and high-photocatalysis activity. The invention also discloses a preparation method of the bismuth tungstate catalyst. The method is used for preparing by taking egg white as a biological template. The bismuth tungstate catalyst prepared by the method provided by the invention has the morphology of a sheet-shaped structure, has large specific surface area and favorable photocatalysis activity; the morphology regulating agent during the preparation process is the nontoxic and harmless environment-friendly biomimetic material egg white; the preparation process has no pollution to the environment; moreover, the preparation method is simple to operate, high in yield, and controllable in morphology.
Description
Technical field
The invention belongs to bismuth tungstate photocatalyst technical field, be specifically related to a kind ofly take egg and prepare the method for bismuth tungstate photocatalyst as template.
Background technology
Environmental pollution is the significant challenge that current mankind faces, and utilizing photocatalysis technology to administer environmental problem is one of current most active research field, and finds the top priority that high efficiency photochemical catalyst is this field.Early stage research mainly concentrates on TiO
2on photochemical catalyst, it has, and catalytic activity is high, good stability, low price and the premium properties such as nontoxic, thereby enjoys favor.But TiO
2energy gap is 3.2eV, only under wavelength is less than the ultraviolet ray of 387nm, just can excite its catalytic activity.In arriving the solar energy on ground, the energy of this wave band is less than 5% still, and the ratio of visible light part accounts for 45% left and right of solar energy.Therefore, the visible light catalyst of the efficient response of design becomes photocatalysis science and pollutes and control one of great research topic facing.
Bismuth tungstate (Bi
2wO
6) photochemical catalyst is with its unique electronic structure, good visible absorption ability and higher organic matter degradation ability, is considered to a kind of potential good visible light catalytic material.The preparation method of bismuth tungstate photocatalyst mainly concentrates on coprecipitation, microemulsion method and hydro-thermal method etc. at present.Coprecipitation needs high-temperature calcination in preparation process, and calcining can cause crystal grain to be reunited and particle diameter skewness, directly causes the reduction of photocatalytic activity; The nano-particle molecular gap that microemulsion method obtains is larger; Hydro-thermal method is high to equipment requirement, and technical difficulty is large, and therefore poor stability finds a kind of reaction condition gentle, easy operating, and method goes to prepare particularly important that bismuth tungstate photocatalyst becomes simply and easily.
Biomimetic synthesis technology is that to take large biological molecule, biological organic matter self-assembly be template, the nucleation of inorganic matter and growth is regulated, as utilized the natural materials such as DNA, protein, polysaccharide, insect wing to carry out synthesis of nano functional material.In these natural materials, nontoxic, easy foaming that egg has, emulsification, gelation, cheap and good advantages such as biocompatibility, be the boundless natural template of a kind of application prospect.
Summary of the invention
The present invention provides a kind of bismuth tungstate photocatalyst with laminated structure and high catalytic activity for overcoming the deficiencies in the prior art, and the present invention also provides that a kind of reaction condition is gentle, simple to operate, productive rate is higher and the green bionics techniques preparation of the controlled utilization of crystal morphology has the method for high catalytic activity bismuth tungstate photocatalyst.
Technical scheme of the present invention is: a kind of bismuth tungstate photocatalyst, is characterized in that: this bismuth tungstate photocatalyst is to take the bismuth tungstate photocatalyst with laminated structure and highlight catalytic active that egg prepared as biological template.
The preparation method of bismuth tungstate of the present invention, is characterized in that the method take egg as biological template is prepared from, and specifically comprises the following steps: (1) is with ammonium tungstate (H
40n
10o
41w
12), bismuth and ammonium citrate (C
12h
22biN
3o
14), egg and deionized water be raw material, respectively ammonium tungstate and bismuth and ammonium citrate and deionized water are made into the aqueous solution, by beating eggs, peel off and remove yolk, egg white is soluble in water, stir, remove by filter white suspension flocculent substance, then under the condition stirring, in ammonium tungstate solution and bismuth citrate ammonium salt solution, add egg white to form egg clear solution respectively; (2) by the egg clear solution of step (1) gained n(H in molar ratio
40n
10o
41w
12): n (C
12h
22biN
3o
14the ratio of)=1:24 mixes, and with acid or alkali, regulating the pH value of reaction solution is 3-8, then the transparent mixed solution of gained is kept in the water-bath of 60-80 ℃ within 6-12 hour, obtain wet gel, and wet gel is dried to obtain xerogel through 110 ℃; (3) xerogel of step (2) gained is transferred in crucible, with heating rate constant temperature 2-10 hour under the condition of 300-700 ℃ of 5 ℃/min, ground the bismuth tungstate photocatalyst that obtains high catalytic activity.
The molar concentration of the ammonium tungstate solution described in step of the present invention (1) and bismuth citrate ammonium salt solution is 0.001-0.5mol/L, and the mass concentration of described egg clear solution is 0.1-10g/L.Acid described in step of the present invention (2) is nitric acid, and described alkali is ammoniacal liquor.
The present invention compared with prior art has following remarkable advantage: 1, the pattern of prepared bismuth tungstate photocatalyst is laminated structure, has larger specific area and good photocatalytic activity; 2, pattern adjusting control agent is nontoxic, harmless green biomimetic material egg, preparation process environmentally safe; 3, the present invention is simple to operate, and productive rate is high and pattern is controlled.
Accompanying drawing explanation
Fig. 1 is the bismuth tungstate (Bi of the embodiment of the present invention 1 preparation
2wO
6) X-ray diffractogram of photochemical catalyst; Fig. 2 is the bismuth tungstate (Bi of the embodiment of the present invention 1 preparation
2wO
6) scanning electron microscope (SEM) photograph of photochemical catalyst; Fig. 3 is under radiation of visible light, the bismuth tungstate (Bi of the embodiment of the present invention 1 preparation
2wO
6) photochemical catalyst and do not add bismuth tungstate (Bi prepared under egg template condition
2wO
6) light urges agent to rhodamine B degraded situation correlation curve figure (operating condition: the amount of catalyst: 1 g/L; The concentration of rhodamine B: 5 mg/L).
The specific embodiment
The specific embodiment of form by the following examples, foregoing of the present invention is described in further details, but this should be interpreted as to the scope of the above-mentioned theme of the present invention only limits to following embodiment, all technology realizing based on foregoing of the present invention all belong to scope of the present invention.
Embodiment 1
(1), configuration concentration is each 10mL of ammonium tungstate solution that 0.06mol/L bismuth citrate ammonium salt solution and concentration are 0.0025mol/L, under the condition stirring, the filtration that is 0.2g/L by 30mL concentration obtains egg solution and joins respectively in bismuth citrate ammonium salt solution and ammonium tungstate solution;
(2), with nitric acid, adjust the pH=6 of solution after above-mentioned two kinds of clear solutions are evenly mixed, then this solution is kept in the water-bath of 60 ℃ within 12 hours, obtain wet gel, then by wet gel at 110 ℃ of dry xerogel that obtain;
(3), xerogel is transferred in crucible, then, at heating rate constant temperature 5h under the condition of 500 ℃ of 5 ℃/min, naturally cool to room temperature, after will product grinding, obtain the bismuth tungstate catalysis material of high catalytic activity.Catalysis material by the known preparation of X-ray diffractogram of Fig. 1 is bismuth tungstate photocatalyst, the bismuth tungstate photocatalyst that the catalysis material of preparation is laminated structure as shown in Figure 2, the bismuth tungstate photocatalyst that adds egg template along with the prolongation of degradation time as shown in Figure 3 has higher degradation rate, thereby take the bismuth tungstate photocatalyst that egg is prepared from as biological template and have good photocatalysis effect.
(1), configuration concentration is each 10mL of ammonium tungstate solution that 0.024mol/L bismuth citrate ammonium salt solution and concentration are 0.001mol/L, under the condition stirring, the filtration that is 10g/L by 30mL concentration obtains egg solution and joins respectively in bismuth citrate ammonium salt solution and ammonium tungstate solution;
(2), with nitric acid, adjust the pH=3 of solution after above-mentioned two kinds of clear solutions are evenly mixed, then this solution is kept in the water-bath of 80 ℃ within 6 hours, obtain wet gel, then by wet gel at 110 ℃ of dry xerogel that obtain;
(3), xerogel is transferred in crucible, then, at heating rate constant temperature 10h under the condition of 300 ℃ of 5 ℃/min, naturally cool to room temperature, after will product grinding, obtain the bismuth tungstate catalysis material of high catalytic activity.
Embodiment 3
(1), configuration concentration is each 10mL of ammonium tungstate solution that 0.48mol/L bismuth citrate ammonium salt solution and concentration are 0.02mol/L, under the condition stirring, the filtration that is 0.5g/L by 30mL concentration obtains egg solution and joins respectively in bismuth citrate ammonium salt solution and ammonium tungstate solution;
(2), with ammoniacal liquor, adjust the pH=8 of solution after above-mentioned two kinds of clear solutions are evenly mixed, then this solution is kept in the water-bath of 60 ℃ within 12 hours, obtain wet gel, then by wet gel at 110 ℃ of dry xerogel that obtain;
(3), xerogel is transferred in crucible, then, at heating rate constant temperature 2h under the condition of 700 ℃ of 5 ℃/min, naturally cool to room temperature, after will product grinding, obtain the bismuth tungstate catalysis material of high catalytic activity.
Above embodiment has described basic principle of the present invention, principal character and advantage.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present invention; do not departing under the scope of the principle of the invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the scope of protection of the invention.
Claims (5)
1. a bismuth tungstate photocatalyst, is characterized in that: this bismuth tungstate photocatalyst is to take the bismuth tungstate photocatalyst with laminated structure and highlight catalytic active that egg prepared as biological template.
2. the preparation method of a bismuth tungstate photocatalyst claimed in claim 1, it is characterized in that the method take egg and be prepared from as biological template, specifically comprise the following steps: (1) is with ammonium tungstate, bismuth and ammonium citrate, egg and deionized water are raw material, respectively ammonium tungstate and bismuth and ammonium citrate and deionized water are made into the aqueous solution, by beating eggs, peel off and remove yolk, egg white is soluble in water, stir, remove by filter white suspension flocculent substance, then under the condition stirring, in ammonium tungstate solution and bismuth citrate ammonium salt solution, add egg white to form egg clear solution respectively, (2) by the egg clear solution of step (1) gained n(H in molar ratio
40n
10o
41w
12): n (C
12h
22biN
3o
14the ratio of)=1:24 mixes, and with acid or alkali, regulating the pH value of reaction solution is 3-8, then the transparent mixed solution of gained is kept in the water-bath of 60-80 ℃ within 6-12 hour, obtain wet gel, and wet gel is dried to obtain xerogel through 110 ℃, (3) xerogel of step (2) gained is transferred in crucible, with heating rate constant temperature 2-10 hour under the condition of 300-700 ℃ of 5 ℃/min, ground the bismuth tungstate photocatalyst that obtains high catalytic activity.
3. the preparation method of bismuth tungstate photocatalyst according to claim 2, is characterized in that: the molar concentration of the ammonium tungstate solution described in step (1) and bismuth citrate ammonium salt solution is 0.001-0.5mol/L.
4. the preparation method of bismuth tungstate photocatalyst according to claim 2, is characterized in that: the mass concentration of the egg clear solution described in step (1) is 0.1-10g/L.
5. the preparation method of bismuth tungstate photocatalyst according to claim 2, is characterized in that: the acid described in step (2) is nitric acid, and described alkali is ammoniacal liquor.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107213892A (en) * | 2017-07-03 | 2017-09-29 | 四川恒创博联科技有限责任公司 | A kind of bismuth tungstate catalysis material and preparation method thereof |
| CN111675202A (en) * | 2019-06-11 | 2020-09-18 | 宁波大学 | Bismuth phosphate nano powder and synthesis method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101774593A (en) * | 2009-01-14 | 2010-07-14 | 西南科技大学 | Ordered porous silica and silicon carbonitride and preparation method and application thereof |
| CN102513164A (en) * | 2011-12-08 | 2012-06-27 | 上海交通大学 | Method for preparing ternary visible photocatalytic water splitting material with biologically-grading porous structure |
| CN102674461A (en) * | 2012-05-15 | 2012-09-19 | 陕西科技大学 | Preparation method of laminar-card-structure bisumth tungstate microcrystals |
| CN102765758A (en) * | 2012-08-06 | 2012-11-07 | 河南师范大学 | Sol-gel-hydrothermal method for preparing bismuth tungstate and indium-doped bismuth tungstate |
| CN102992406A (en) * | 2011-09-15 | 2013-03-27 | 上海纳米技术及应用国家工程研究中心有限公司 | Bismuth tungstate nano-sheet and preparation method thereof |
| CN103191723A (en) * | 2013-03-22 | 2013-07-10 | 南开大学 | Hydro-thermal synthesis method of visible light photocatalyst mesoporous Bi2WO6 |
-
2013
- 2013-12-05 CN CN201310644506.1A patent/CN103611528B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101774593A (en) * | 2009-01-14 | 2010-07-14 | 西南科技大学 | Ordered porous silica and silicon carbonitride and preparation method and application thereof |
| CN102992406A (en) * | 2011-09-15 | 2013-03-27 | 上海纳米技术及应用国家工程研究中心有限公司 | Bismuth tungstate nano-sheet and preparation method thereof |
| CN102513164A (en) * | 2011-12-08 | 2012-06-27 | 上海交通大学 | Method for preparing ternary visible photocatalytic water splitting material with biologically-grading porous structure |
| CN102674461A (en) * | 2012-05-15 | 2012-09-19 | 陕西科技大学 | Preparation method of laminar-card-structure bisumth tungstate microcrystals |
| CN102765758A (en) * | 2012-08-06 | 2012-11-07 | 河南师范大学 | Sol-gel-hydrothermal method for preparing bismuth tungstate and indium-doped bismuth tungstate |
| CN103191723A (en) * | 2013-03-22 | 2013-07-10 | 南开大学 | Hydro-thermal synthesis method of visible light photocatalyst mesoporous Bi2WO6 |
Non-Patent Citations (1)
| Title |
|---|
| YUMIN LIU等: "Synthesis of hierarchical Bi 2 WO 6 microspheres with high visible-light-driven photocatalytic activities by sol–gel-hydrothermal route", 《MATERIALS LETTERS》, vol. 108, 8 October 2013 (2013-10-08) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107213892A (en) * | 2017-07-03 | 2017-09-29 | 四川恒创博联科技有限责任公司 | A kind of bismuth tungstate catalysis material and preparation method thereof |
| CN111675202A (en) * | 2019-06-11 | 2020-09-18 | 宁波大学 | Bismuth phosphate nano powder and synthesis method thereof |
| CN111675202B (en) * | 2019-06-11 | 2023-01-03 | 宁波大学 | Bismuth phosphate nano powder and synthesis method thereof |
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| CN103611528B (en) | 2015-06-03 |
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