CN103055901A - Development and application method of bismuth oxyhalide system material for processing organic pollutant efficiently - Google Patents
Development and application method of bismuth oxyhalide system material for processing organic pollutant efficiently Download PDFInfo
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- CN103055901A CN103055901A CN2012105427061A CN201210542706A CN103055901A CN 103055901 A CN103055901 A CN 103055901A CN 2012105427061 A CN2012105427061 A CN 2012105427061A CN 201210542706 A CN201210542706 A CN 201210542706A CN 103055901 A CN103055901 A CN 103055901A
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Abstract
The invention discloses a development and application method of a bismuth oxyhalide system material for processing organic pollutant efficiently. A novel semiconducting material which is low in synthesis cost, pollution-free and high in efficiency, and can use visible light to degrade organic pollutants can efficiently degrade pollutants in waste water, and fully mineralizes the pollutants into carbon dioxide and water, and accordingly no secondary pollutant is produced. Two aspects of synthesis technology and a material system are improved, wherein a low temperature precipitation method is adopted to synthesize a series of visible light catalysis degradation materials, and the system is mainly semiconducting materials doped with bismuth chloride oxide-I of a nanometer nuclear shell structure and compounded semiconducting materials of bismuth oxyiodide and bismuthyl bromide which are both of a slice sphere structure. The material system can be recycled and repeatedly used, and is still remarkable in degradation effect. The development and application method can be applied to printing and dyeing wastewater treatment, places materials on a fluidized bed or a fixed bed for lighting, and removes the organic pollutants with trace chemical oxygen demand and biochemical oxygen demand by deeply disposing. The bismuth oxyhalide system material can be widely applied to aspects of producing electron function materials, fire retardant, optical materials, medical composite materials, radiation proof materials and the like.
Description
Technical field
The present invention relates to a kind of application process of material science, specifically a kind of development and application process of efficient processing organic pollution BiOX based material.
Background technology
At present, domestic treatment of dyeing and printing has the three large solutions such as physico-chemical process, chemical method, biochemical process.Wherein, the photochemical catalytic oxidation of physicochemical treatment method is to utilize organic matter in the synergistic oxidation effect Decomposition Wastewater of ultraviolet light and oxidant, make the method for purification of waste water, it can make multiple pollutant decompose fully and not form intermediate, nearly all water pollutant all can obtain degraded by heterogeneous catalysis process, and have the advantages such as inexpensive, safe, therefore many experts think that photochemical catalytic oxidation will become one of dominant technology of 21st century water treatment.
The patent No. is that 200410060618.3 invention relates to a kind of efficient degradable nano-TiO
2
-polyethylene composite plastic is with nano-TiO
2
Powder carries out surface modification with surface modifier and obtains modified Nano TiO
2
Powder is with modified Nano TiO
2
Powder, polyethylene, Ployethylene Wax blending extrusion on the twin-screw mixer machine contains nano-TiO
2
Master batch, TiO in the master batch
2
Content is 20-40wt%, and polymerized ethylene content is 0-20wt%, and the content of Ployethylene Wax is 40-80wt%, then will contain nano-TiO
2
Master batch and the blend of polyethylene raw material, adopt the mixing preparation of twin-screw mixer machine TiO
2
Content be the light degradation nano-TiO of 0.5-5wt%
2
The polyethylene composite plastic.But TiO2 is limited to the utilization rate of sunshine, photocatalytic degradation efficiency is not high.Although TiO2 is comparatively ripe catalysis material of present stage, because its utilization rate to visible light is limited, the being widely used property that limited it.
Material of the present invention has good characteristic and the reusable good stability of effective Visible Light Induced Photocatalytic organic pollution, expand the visible light catalytic oxidation wastewater processing technology in industrial application, embodied the theory of the sustainable development of efficient, energy-saving and environmental protection.
Summary of the invention
A kind of novel synthetic with low cost, pollution-free, high efficiency, can utilize the semi-conducting material of Visible Light Induced Photocatalytic organic pollution, efficiently degrading waste water pollutant, and permineralization becomes carbon dioxide and water, does not produce secondary pollution.This material system can reclaim and repeatedly use, and degradation effect still significantly.
Innovative point has two aspects:
The innovation of 1 synthesis technique: the present invention has adopted the low-temperature precipitation method to synthesize a series of visible light photocatalytic degradation materials: this is simple for process, production cost is low, is fit to suitability for industrialized production.
The innovation of 2 material systems: body series is mainly 1. nano core-shell structure BiOCl-I doped semiconductor materials
Expect 2. spherical structure BiOI/BiOBr composite semiconductor materials.BiOCl makes on its valence band broadening by doping I ion one and moves in the material 1, effectively reduces the energy gap of BiOCl and makes it form the load center that lattice defect increases electron-hole pair, improves the performance of its Visible Light Induced Photocatalytic pollutant.Material 2 is compound by two different band gap semiconductor BiOI and BiOBr, accelerates the separation of photo-generated carrier, and the expansion light abstraction width improves photocatalytic activity, greatly improves separately semi-conductive degradation of contaminant ability.Degrading waste water pollutant system belongs to heterogeneous catalysis, material pattern specific area there is specific (special) requirements, the body series material is nano core-shell structure and the sheet spherical structure of synthetic corresponding good dispersion also, promote the contact-making surface of material and light source, organic pollution from macroscopic view, increased the probability that reaction is carried out.Experimental fact shows: 1. after nano core-shell structure BiOCl-I doped semiconductor materials shines 90min under iodine-tungsten lamp, to the catalytic degradation efficient of rhodamine: 99.5%.2. nanometer sheet spherical structure BiOI/BiOBr composite semiconductor material reaches 80% at absorption property in the darkroom, and degradation rate reaches 99.2% behind the irradiation 30min under xenon lamp.
The specific embodiment
Below be that enforcement test and the application of new material are done a little explanations
BiOX based material a. nano core-shell structure BiOCl-I doped semiconductor materials shines 90min under iodine-tungsten lamp after, to the catalytic degradation efficient of RhB: 99.5%.B. sheet spherical structure BiOI/BiOBr composite semiconductor material reaches 80% at absorption property in the darkroom, and degradation rate reaches behind the irradiation 30min under xenon lamp
99.2%。
The BiOX based material can be with the organic matter permineralization, and chemical recycling of carbon dioxide and water do not produce secondary pollution.
The BiOX based material can reclaim and repeatedly use, and degradation effect still significantly.
Development BiOX based material has the ability of efficient processing organic pollution, and has good physical and chemical stability, can be used on the degraded of being devoted to the organic matter dyestuff in the Industrial Wastewater Treatment system.Simultaneously, its material application has been extended to the aspects such as electronic functional material, fire retardant, optical material, medical composite material, radiation proof material.In addition, the preparation technology of this invention is simple, and the prices of raw and semifnished materials are cheap, are easy to apply at industrial wastewater, has very high using value.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (3)
1. an organic pollution is processed material--BiOX based material, it is characterized in that, has adopted the low-temperature precipitation method to synthesize a series of visible light photocatalytic degradation materials.
2. BiOX based material according to claim 1 is characterized in that, material system, body series are mainly nano core-shell structure BiOCl-I doped semiconductor materials and sheet spherical structure BiOI/BiOBr composite semiconductor material.
3. BiOX based material according to claim 1 is characterized in that, material can be placed to carry out illumination on fluid bed or the fixed bed, and advanced treating is removed trace amounts of CO D and the BOD organic pollution materials in the water.
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| CN2012105427061A CN103055901A (en) | 2012-12-15 | 2012-12-15 | Development and application method of bismuth oxyhalide system material for processing organic pollutant efficiently |
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| CN2012105427061A CN103055901A (en) | 2012-12-15 | 2012-12-15 | Development and application method of bismuth oxyhalide system material for processing organic pollutant efficiently |
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| CN103055901A true CN103055901A (en) | 2013-04-24 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105521800A (en) * | 2015-12-14 | 2016-04-27 | 江南大学 | Ultrathin BiOBrxI1-x photocatalyst and preparation method thereof |
| CN107243350A (en) * | 2017-07-10 | 2017-10-13 | 苏州科技大学 | The full spectral response photocatalyst material of attapulgite load and its preparation method |
| CN107376950A (en) * | 2017-07-27 | 2017-11-24 | 中国科学院海洋研究所 | A kind of nano composite photocatalytic thin-film material and preparation method thereof |
| CN108970629A (en) * | 2018-07-20 | 2018-12-11 | 河南师范大学 | A kind of preparation method of carbon doping BiOCl visible light responsible photocatalytic material |
| CN109261171A (en) * | 2018-11-14 | 2019-01-25 | 哈尔滨理工大学 | A kind of chlorine bismuth oxyiodide (010)/graphene hetero-junctions and its preparation method and application |
| CN115254152A (en) * | 2022-06-22 | 2022-11-01 | 中国科学技术大学苏州高等研究院 | Application of cobalt-doped bismuth oxybromide catalyst in selective oxidative degradation of pollutants |
-
2012
- 2012-12-15 CN CN2012105427061A patent/CN103055901A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105521800A (en) * | 2015-12-14 | 2016-04-27 | 江南大学 | Ultrathin BiOBrxI1-x photocatalyst and preparation method thereof |
| CN107243350A (en) * | 2017-07-10 | 2017-10-13 | 苏州科技大学 | The full spectral response photocatalyst material of attapulgite load and its preparation method |
| CN107376950A (en) * | 2017-07-27 | 2017-11-24 | 中国科学院海洋研究所 | A kind of nano composite photocatalytic thin-film material and preparation method thereof |
| CN107376950B (en) * | 2017-07-27 | 2020-01-14 | 中国科学院海洋研究所 | Nano composite photocatalytic film material and preparation method thereof |
| CN108970629A (en) * | 2018-07-20 | 2018-12-11 | 河南师范大学 | A kind of preparation method of carbon doping BiOCl visible light responsible photocatalytic material |
| CN109261171A (en) * | 2018-11-14 | 2019-01-25 | 哈尔滨理工大学 | A kind of chlorine bismuth oxyiodide (010)/graphene hetero-junctions and its preparation method and application |
| CN115254152A (en) * | 2022-06-22 | 2022-11-01 | 中国科学技术大学苏州高等研究院 | Application of cobalt-doped bismuth oxybromide catalyst in selective oxidative degradation of pollutants |
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Application publication date: 20130424 |