CN104998671A - Supported Bi2O2CO3 photocatalyst and preparation method thereof - Google Patents
Supported Bi2O2CO3 photocatalyst and preparation method thereof Download PDFInfo
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- CN104998671A CN104998671A CN201510298200.4A CN201510298200A CN104998671A CN 104998671 A CN104998671 A CN 104998671A CN 201510298200 A CN201510298200 A CN 201510298200A CN 104998671 A CN104998671 A CN 104998671A
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- mixed solution
- kaolin
- photochemical catalyst
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- soft magnetism
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Abstract
The invention discloses a supported Bi2O2CO3 photocatalyst and a preparation method thereof and belongs to the technical field of inorganic environmental protection photocatalytic materials. According to the technical scheme, the supported Bi2O2CO3 photocatalyst is characterized by being formed by compositing Bi2O2CO3 with kaolin supported with soft magnetic Mn0.5 Zn0.5 Fe2O4. The preparation method of the supported Bi2O2CO3 photocatalyst is further disclosed. The stronger adsorptive property of the kaolin can maintain the higher photocatalytic efficiency of Bi2O2CO3 suspensoid, a magnetism technology is used to recycle the photocatalyst, the separation process is simplified, the operation cost is reduced, the preparation method is simple, the control is easy, and the cost is low.
Description
Technical field
The invention belongs to inorganic environment-friendly catalysis material technical field, be specifically related to a kind of support type Bi
2o
2cO
3photochemical catalyst and preparation method thereof.
Background technology
In recent years, utilize the research of organic pollution in Photocatalitic Technique of Semiconductor degradation of dye waste water and air very active.The core content of photocatalysis technology is select suitable photochemical catalyst, and semiconductor light-catalyst is different, and its band gap is different, and to the selective difference of light source, the luminous energy that bandgap excitation needs is also different, causes the difference of different conductor photocatalysis performance.Such as some narrow gap semiconductor photochemical catalyst such as CdS etc. has photocatalytic activity under visible light illumination, but due to itself photochemistry unstability, makes it photoetch can occur under light irradiates, because of instead of good photochemical catalyst.Therefore, the photochemical catalyst that development of new has photochemical stability and has a high light catalytic activity seems particularly urgent.
Bi
2o
2cO
3it is a kind of novel catalysis material, its energy gap is 3.4eV, when the illumination being subject to energy and being not less than its band gap is penetrated, can produce conduction band electron and valence band hole, there is stronger reproducibility and oxidisability, directly organic pollutant degradation can be become nontoxic water and carbon dioxide.But nanometer Bi
2o
2cO
3photochemical catalyst is in use easily reunited on the one hand and is caused photocatalytic activity to reduce, and causes it to be separated on the other hand and reclaiming difficulty because its particle diameter is too little.So, during for wastewater treatment, must by Bi
2o
2cO
3be carried on certain carrier and could use.Kaolin is the nonmetallic mineral of rich reserves, is take kandite as the soil property rock of main component, has strong ionic adsorption and weak cation exchange, strong absorptive, is easy to dispersion suspension in the medium feature of water, be applicable to very much being used as Bi
2o
2cO
3the carrier of photochemical catalyst.Using natural minerals kaolin as Bi
2o
2cO
3carrier of photocatalyst, can make Bi
2o
2cO
3photochemical catalyst is combined with mineral securely, and then makes photocatalysis performance more lastingly stable; In addition, in waste water treatment applications, can also utilize kaolinic ion-exchange and absorption property that the organic matter in waste water is adsorbed onto Bi effectively
2o
2cO
3the surface of photochemical catalyst, increases the contact probability of catalyst and pollutant, reaches the object improving the disposal efficiency and degradation rate, greatly can also reduce the preparation cost of catalyst simultaneously.Although by Bi
2o
2cO
3load can improve its photocatalytic activity on the kaolin, but on engineer applied, suspension system photocatalyst powder needs filtration to be isolated recovery after using, and in separation process, quite a few photochemical catalyst runs off, and the photocatalyst activity simultaneously reclaimed also decreases.In recent years, a kind of efficient, fast and the magnetic separation technique of economy is widely used in the fields such as environmental protection.If by a kind of magnetic component load at Bi
2o
2cO
3photocatalyst surface, not only can avoid the reunion of catalyst particles intergranular, improves its photocatalytic activity, can also increase Bi
2o
2cO
3the rate of settling of photochemical catalyst, and utilize magnetic separation technique to be gone out by its quick separating from wastewater treatment system, solve photocatalysis technology key issue in actual applications.
Summary of the invention
It is high and be easy to separation and recovery and reusable support type Bi that the technical problem that the present invention solves there is provided a kind of photocatalytic activity
2o
2cO
3photochemical catalyst.
Another technical problem that the present invention solves there is provided a kind of simple to operate, be easy to control and support type Bi with low cost
2o
2cO
3the preparation method of photochemical catalyst.
The present invention adopts following technical scheme, a kind of support type Bi for solving the problems of the technologies described above
2o
2cO
3photochemical catalyst, it is characterized in that by by Bi
2o
2cO
3soft magnetism Mn is had with load
0.5zn
0.5fe
2o
4kaolin compound formed, wherein kaolin and soft magnetism Mn
0.5zn
0.5fe
2o
4mass ratio be 5-15:1, load has soft magnetism Mn
0.5zn
0.5fe
2o
4kaolin and Bi
2o
2cO
3mass ratio be 1-3:1.
Support type Bi of the present invention
2o
2cO
3the preparation method of photochemical catalyst, it is characterized in that comprising the following steps: (1) is by manganese nitrate, zinc nitrate and the ferric nitrate in molar ratio ratio of 1:1:4 mix with deionized water and obtain mixed solution, kaolin is added again in mixed solution, then in mixed system, disodium ethylene diamine tetraacetate (EDTA) is added, wherein the addition of EDTA and the mol ratio of zinc nitrate are 3:1, in the water-bath of 80 DEG C, kept by the mixed system of gained 12h to obtain wet gel, wet gel obtains xerogel through 110 DEG C of dryings, then xerogel is obtained load after 500 DEG C of calcining 2h and have soft magnetism Mn
0.5zn
0.5fe
2o
4kaolin, (2) ratio of five water bismuth nitrates and urea 1:3 is in molar ratio mixed with deionized water obtain mixed solution under agitation, in mixed solution, add ammoniacal liquor regulates the pH value of mixed solution to be 4, under agitation the load that step (1) is obtained is had soft magnetism Mn
0.5zn
0.5fe
2o
4kaolin join in above-mentioned mixed solution, the mixed system of gained is transferred in hydrothermal reaction kettle, then hydrothermal reaction kettle is put into microwave dissolver in 180-200 DEG C of microwave reaction 10-30min, after cooling, filtration, washing, drying, obtain the support type Bi with high catalytic activity
2o
2cO
3photochemical catalyst.
Further restriction, in the mixed solution of step (1), the molar concentration of zinc nitrate is 0.01mol/L.
Further restriction, adding kaolinic amount in step (1) is soft magnetism Mn
0.5zn
0.5fe
2o
4the 5-15 of quality doubly.
Further restriction, in the mixed solution of step (2), the molar concentration of bismuth nitrate is 0.05mol/L.
Further restriction, adding load in step (2) has soft magnetism Mn
0.5zn
0.5fe
2o
4kaolinic amount be Bi
2o
2cO
3the 1-3 of quality doubly.
The present invention compared with prior art has following remarkable advantage: the absorption absorption that 1, kaolin is stronger can maintain Bi
2o
2cO
3the photocatalysis efficiency that suspension system is higher; 2, utilize magnetic technique to reclaim photochemical catalyst, simplify separation process, reduce operating cost; 3, the inventive method is simple, is easy to control and with low cost.
Detailed description of the invention
Further describe the present invention below in conjunction with embodiment, it is noted that the present invention is not limited to following each embodiment.
Embodiment 1
(1) amount of substance is respectively 0.1 × 10
-2mol, 0.1 × 10
-2mol and 0.4 × 10
-2the manganese nitrate of mol, zinc nitrate and ferric nitrate deionized water are made into mixed solution, and in mixed solution, the molar concentration of zinc nitrate is 0.01mol/L, then add in mixed solution and be equivalent to above-mentioned system soft magnetism Mn
0.5zn
0.5fe
2o
4the kaolin that quality is 5 times, then adds 0.3 × 10 in mixed system
-2mol EDTA, in the water-bath of 80 DEG C, kept by the mixed system of gained 12h to obtain wet gel, wet gel obtains xerogel through 110 DEG C of dryings, and then xerogel being obtained load after 500 DEG C of calcining 2h has soft magnetism Mn
0.5zn
0.5fe
2o
4kaolin;
(2) under agitation amount of substance is respectively 0.55 × 10
-2mol and 1.65 × 10
-2bismuth nitrate and the urea deionized water of mol are made into mixed solution, in mixed solution, the molar concentration of bismuth nitrate is 0.05mol/L, in mixed solution, add ammoniacal liquor regulates the pH value of mixed solution to be 4, and the load then adding 1.415g step (1) obtained has soft magnetism Mn
0.5zn
0.5fe
2o
4kaolin, the mixed system of gained is transferred in hydrothermal reaction kettle, then hydrothermal reaction kettle is put into microwave dissolver in 180 DEG C of microwave reaction 30min, through cooling, filter, washing, obtain the support type Bi with high catalytic activity after drying
2o
2cO
3photochemical catalyst.
Embodiment 2
(1) amount of substance is respectively 0.1 × 10
-2mol, 0.1 × 10
-2mol and 0.4 × 10
-2the manganese nitrate of mol, zinc nitrate and ferric nitrate deionized water are made into mixed solution, and in mixed solution, the molar concentration of zinc nitrate is 0.01mol/L, then add in mixed solution and be equivalent to above-mentioned system soft magnetism Mn
0.5zn
0.5fe
2o
4the kaolin that quality is 10 times, then adds 0.3 × 10 in mixed system
-2mol EDTA, in the water-bath of 80 DEG C, kept by the mixed system of gained 12h to obtain wet gel, wet gel obtains xerogel through 110 DEG C of dryings, and then xerogel being obtained load after 500 DEG C of calcining 2h has soft magnetism Mn
0.5zn
0.5fe
2o
4kaolin;
(2) under agitation amount of substance is respectively 0.55 × 10
-2mol and 1.65 × 10
-2bismuth nitrate and the urea deionized water of mol are made into mixed solution, in mixed solution, the molar concentration of bismuth nitrate is 0.05mol/L, in mixed solution, add ammoniacal liquor regulates the pH value of mixed solution to be 4, and the load then adding 2.594g step (1) obtained has soft magnetism Mn
0.5zn
0.5fe
2o
4kaolin, the mixed system of gained is transferred in hydrothermal reaction kettle, then hydrothermal reaction kettle is put into microwave dissolver in 180 DEG C of microwave reaction 20min, through cooling, filter, washing, obtain the support type Bi with high catalytic activity after drying
2o
2cO
3photochemical catalyst.
Embodiment 3
(1) amount of substance is respectively 0.1 × 10
-2mol, 0.1 × 10
-2mol and 0.4 × 10
-2the manganese nitrate of mol, zinc nitrate and ferric nitrate deionized water are made into mixed solution, and in mixed solution, the molar concentration of zinc nitrate is 0.01mol/L, then add in mixed solution and be equivalent to above-mentioned system soft magnetism Mn
0.5zn
0.5fe
2o
4the kaolin that quality is 15 times, then adds 0.3 × 10 in mixed system
-2mol EDTA, in the water-bath of 80 DEG C, kept by the mixed system of gained 12h to obtain wet gel, wet gel obtains xerogel through 110 DEG C of dryings, and then xerogel being obtained load after 500 DEG C of calcining 2h has soft magnetism Mn
0.5zn
0.5fe
2o
4kaolin;
(2) under agitation amount of substance is respectively 0.55 × 10
-2mol and 1.65 × 10
-2bismuth nitrate and the urea deionized water of mol are made into mixed solution, in mixed solution, the molar concentration of bismuth nitrate is 0.05mol/L, in mixed solution, add ammoniacal liquor regulates the pH value of mixed solution to be 4, and the load then adding 3.82g step (2) obtained has soft magnetism Mn
0.5zn
0.5fe
2o
4kaolin, the mixed system of gained is transferred in hydrothermal reaction kettle, then hydrothermal reaction kettle is put into microwave dissolver in 200 DEG C of microwave reaction 10min, through cooling, filter, washing, obtain the support type Bi with high catalytic activity after drying
2o
2cO
3photochemical catalyst.
Embodiment above describes general 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; what describe in above-described embodiment and description just illustrates principle of the present invention; under the scope not departing from 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 (6)
1. a support type Bi
2o
2cO
3photochemical catalyst, it is characterized in that by by Bi
2o
2cO
3soft magnetism Mn is had with load
0.5zn
0.5fe
2o
4kaolin compound formed, wherein kaolin and soft magnetism Mn
0.5zn
0.5fe
2o
4mass ratio be 5-15:1, load has soft magnetism Mn
0.5zn
0.5fe
2o
4kaolin and Bi
2o
2cO
3mass ratio be 1-3:1.
2. a support type Bi according to claim 1
2o
2cO
3the preparation method of photochemical catalyst, it is characterized in that comprising the following steps: the ratio of manganese nitrate, zinc nitrate and ferric nitrate 1:1:4 in molar ratio mixes with deionized water and obtains mixed solution by (1), kaolin is added again in mixed solution, then in mixed system, EDTA is added, wherein the addition of EDTA and the mol ratio of zinc nitrate are 3:1, in the water-bath of 80 DEG C, kept by the mixed system of gained 12h to obtain wet gel, wet gel obtains xerogel through 110 DEG C of dryings, and then xerogel being obtained load after 500 DEG C of calcining 2h has soft magnetism Mn
0.5zn
0.5fe
2o
4kaolin; (2) ratio of five water bismuth nitrates and urea 1:3 is in molar ratio mixed with deionized water obtain mixed solution under agitation, in mixed solution, add ammoniacal liquor regulates the pH value of mixed solution to be 4, under agitation the load that step (1) is obtained is had soft magnetism Mn
0.5zn
0.5fe
2o
4kaolin join in above-mentioned mixed solution, the mixed system of gained is transferred in hydrothermal reaction kettle, then hydrothermal reaction kettle is put into microwave dissolver in 180-200 DEG C of microwave reaction 10-30min, after cooling, filtration, washing, drying, obtain the support type Bi with high catalytic activity
2o
2cO
3photochemical catalyst.
3. support type Bi according to claim 2
2o
2cO
3the preparation method of photochemical catalyst, is characterized in that: in the mixed solution of step (1), the molar concentration of zinc nitrate is 0.01mol/L.
4. support type Bi according to claim 2
2o
2cO
3the preparation method of photochemical catalyst, is characterized in that: adding kaolinic amount in step (1) is soft magnetism Mn
0.5zn
0.5fe
2o
4the 5-15 of quality doubly.
5. support type Bi according to claim 2
2o
2cO
3the preparation method of photochemical catalyst, is characterized in that: in the mixed solution of step (2), the molar concentration of bismuth nitrate is 0.05mol/L.
6. support type Bi according to claim 2
2o
2cO
3the preparation method of photochemical catalyst, is characterized in that: adding load in step (2) has soft magnetism Mn
0.5zn
0.5fe
2o
4kaolinic amount be Bi
2o
2cO
3the 1-3 of quality doubly.
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105749945A (en) * | 2016-03-16 | 2016-07-13 | 湖北文理学院 | Fe(III)/Bi2O2CO3 photocatalyst preparation method |
CN105772051A (en) * | 2016-04-18 | 2016-07-20 | 河南师范大学 | Bi2O2CO3-BiFeO3 compound photocatalyst and preparing method thereof |
CN105797760A (en) * | 2016-04-18 | 2016-07-27 | 河南师范大学 | Bi2O2CO3-WO3 composite photocatalyst and preparation method thereof |
CN106186061A (en) * | 2016-06-09 | 2016-12-07 | 辽宁石油化工大学 | One at high temperature stablizes Bi2o2cO3method |
CN106423180A (en) * | 2016-10-12 | 2017-02-22 | 洛阳鼎威材料科技有限公司 | Kaoline and perovskite composite material and preparing method thereof |
CN109331836A (en) * | 2018-10-10 | 2019-02-15 | 重庆大学 | It is a kind of to prepare β-Bi2O3/MnxZn1-xFe2O4The new method of composite magnetic catalysis material |
CN110745879A (en) * | 2018-07-23 | 2020-02-04 | 荆门市格林美新材料有限公司 | Mg2+Preparation method of basic nickel carbonate doped microspheres |
CN112808287A (en) * | 2021-01-31 | 2021-05-18 | 湖南科技大学 | Magnetic core-shell type bismuth oxycarbonate/sepiolite composite photocatalyst and preparation method thereof |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4914392A (en) * | 1972-05-23 | 1974-02-07 |
-
2015
- 2015-06-03 CN CN201510298200.4A patent/CN104998671A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4914392A (en) * | 1972-05-23 | 1974-02-07 |
Non-Patent Citations (6)
Title |
---|
GANGQIANG ZHU等: "Heterostructured Fe3O4/Bi2O2CO3 photocatalyst: Synthesis, characterization and application in recyclable photodegradation of organic dyes under visible light irradiation", 《MATERIALS CHEMISTRY AND PHYSICS》 * |
PUTTASWAMY MADHUSUDAN等: "Novel urea assisted hydrothermal synthesis of hierarchical BiVO4/Bi2O2CO3 nanocomposites with enhanced visible-light photocatalytic activity", 《APPLIED CATALYSIS B: ENVIRONMENTAL》 * |
姚仲鹏 著: "《空气净化原理、设计与应用》", 30 September 2014, 中国科学技术出版社 * |
席国喜等: "EDTA络合溶胶-凝胶法制备Mn-Zn铁氧体", 《硅酸盐通报》 * |
杨保祥 编著: "《钛基材料制造》", 31 January 2015, 冶金工业出版社 * |
马惠言 等: "载体对负载型催化剂的光催化活性影响研究", 《内蒙古工业大学学报》 * |
Cited By (10)
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CN105749945A (en) * | 2016-03-16 | 2016-07-13 | 湖北文理学院 | Fe(III)/Bi2O2CO3 photocatalyst preparation method |
CN105749945B (en) * | 2016-03-16 | 2018-06-19 | 湖北文理学院 | A kind of Fe (Ш)/Bi2O2CO3The preparation method of photochemical catalyst |
CN105772051A (en) * | 2016-04-18 | 2016-07-20 | 河南师范大学 | Bi2O2CO3-BiFeO3 compound photocatalyst and preparing method thereof |
CN105797760A (en) * | 2016-04-18 | 2016-07-27 | 河南师范大学 | Bi2O2CO3-WO3 composite photocatalyst and preparation method thereof |
CN106186061A (en) * | 2016-06-09 | 2016-12-07 | 辽宁石油化工大学 | One at high temperature stablizes Bi2o2cO3method |
CN106423180A (en) * | 2016-10-12 | 2017-02-22 | 洛阳鼎威材料科技有限公司 | Kaoline and perovskite composite material and preparing method thereof |
CN110745879A (en) * | 2018-07-23 | 2020-02-04 | 荆门市格林美新材料有限公司 | Mg2+Preparation method of basic nickel carbonate doped microspheres |
CN109331836A (en) * | 2018-10-10 | 2019-02-15 | 重庆大学 | It is a kind of to prepare β-Bi2O3/MnxZn1-xFe2O4The new method of composite magnetic catalysis material |
CN112808287A (en) * | 2021-01-31 | 2021-05-18 | 湖南科技大学 | Magnetic core-shell type bismuth oxycarbonate/sepiolite composite photocatalyst and preparation method thereof |
CN112808287B (en) * | 2021-01-31 | 2023-10-20 | 湖南科技大学 | Magnetic core-shell bismuth oxide carbonate/sepiolite composite photocatalyst and preparation method thereof |
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Application publication date: 20151028 |