CN104585235A - Silver-loaded bentonite and preparation method thereof - Google Patents
Silver-loaded bentonite and preparation method thereof Download PDFInfo
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- CN104585235A CN104585235A CN201410849777.5A CN201410849777A CN104585235A CN 104585235 A CN104585235 A CN 104585235A CN 201410849777 A CN201410849777 A CN 201410849777A CN 104585235 A CN104585235 A CN 104585235A
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Abstract
The invention discloses a preparation method for sliver-loaded bentonite. The preparation method comprises the following steps: a, at 85-90 DEG C, mixing the bentonite with a diluted nitric acid solution to prepare a mixed solution M1; b, at 60-70 DEG C, mixing the mixed solution M1 with water to prepare a mixed solution M2; c, mixing the mixed solution M2 and lignin sodium benzenesulfonate with amino acid to prepare a mixed solution M3; and d, under a condition with a pH value of 6.5-7, contacting and reacting the mixed solution M3 with silver nitrate to prepare the sliver-loaded bentonite. The sliver-loaded bentonite prepared by the method disclosed by the invention has excellent antibacterial performance.
Description
Technical field
The present invention relates to bentonite, particularly, relate to one and carry silver-colored bentonite and preparation method thereof.
Background technology
Bentonite is the moisture clay pit based on montmorillonite.Because bentonite has special character, as bloating tendency, cohesiveness, adsorptivity, catalytic, thixotropy, suspension and cation exchange, so be widely used in each industrial circle, but bentonite is not also used widely in sterilizing field.
Summary of the invention
The object of this invention is to provide one and carry silver-colored bentonite and preparation method thereof, the silver-colored bentonite that carries be prepared from by the method has excellent anti-microbial property.
To achieve these goals, the invention provides a kind of year silver-colored preparation method for bentonite, described preparation method comprises:
A, at 85-90 DEG C, bentonite and dilute nitric acid solution are mixed and made into mixed liquor M1;
B, at 60-70 DEG C, mixed liquor M1 and water are mixed and made into mixed liquor M2;
C, mixed liquor M2, lignin benzene sulfonic acid sodium salt and amino acid are mixed and made into mixed liquor M3;
D, at pH be 6.5-7 condition under, mixed liquor M3 and silver nitrate are carried out haptoreaction and make and carry a silver-colored bentonite.
Present invention also offers a kind of year silver-colored bentonite, within described year, silver-colored bentonite is prepared from by above-mentioned method.
Pass through technique scheme, within provided by the invention year, silver-colored bentonite first by carrying out modification by bentonite in dust technology, then modified bentonite and water, lignin benzene sulfonic acid sodium salt and amino acid are mixed to form modified bentonite solution, finally silver nitrate and this modified bentonite solution are carried out the obtained year silver-colored bentonite of haptoreaction, so silver-colored bentonite that carries has excellent antibacterial effect.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Embodiment
Below the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
The invention provides a kind of year silver-colored preparation method for bentonite, described preparation method comprises:
A, at 85-90 DEG C, bentonite and dilute nitric acid solution are mixed and made into mixed liquor M1;
B, at 60-70 DEG C, mixed liquor M1 and water are mixed and made into mixed liquor M2;
C, mixed liquor M2, lignin benzene sulfonic acid sodium salt and amino acid are mixed and made into mixed liquor M3;
D, at pH be 6.5-7 condition under, mixed liquor M3 and silver nitrate are carried out haptoreaction and make and carry a silver-colored bentonite.
In the present invention, amino acid whose concrete kind can be selected in wide scope, but in order to make the silver-colored bentonite that carries obtained have more excellent antibacterial effect; Preferably, described amino acid is selected from one or more in glycine, glutamic acid, valine and phenyl alanine.
In the present invention, in step a, the concentration of dilute nitric acid solution can be selected in wide scope, but in order to make the silver-colored bentonite that carries obtained have more excellent antibacterial effect; Preferably, in step a, in described dilute nitric acid solution, the concentration of nitric acid is 1.2mol/L-1.5mol/L.
In the present invention, in step a, the consumption of each material can be selected in wide scope, but in order to make the silver-colored bentonite that carries obtained have more excellent antibacterial effect; Preferably, in step a, relative to the described bentonite of 1 weight portion, the consumption of described dilute nitric acid solution is 30-40 weight portion.
In the present invention, in stepb, the consumption of each material can be selected in wide scope, but in order to make the silver-colored bentonite that carries obtained have more excellent antibacterial effect; Preferably, in stepb, relative to the described mixed liquor M1 of 100 weight portions, the consumption of described water is 80-120 weight portion.
In the present invention, in step c, the consumption of each material can be selected in wide scope, but in order to make the silver-colored bentonite that carries obtained have more excellent antibacterial effect; Preferably, relative to the described mixed liquor M2 of 100 weight portions, the consumption of described lignin benzene sulfonic acid sodium salt is 4-8 weight portion, and described amino acid whose consumption is 1-5 weight portion.
In the present invention, in steps d, the consumption of each material can be selected in wide scope, but in order to make the silver-colored bentonite that carries obtained have more excellent antibacterial effect; Preferably, relative to the described mixed liquor M3 of 100 weight portions, the consumption of described silver nitrate is 3-7 weight portion.
Present invention also offers a kind of year silver-colored bentonite, within described year, silver-colored bentonite is prepared from by above-mentioned method.
Below will be described the present invention by embodiment.In following examples, the detection of antibiotic property is detected by the shake flasks method in " disinfection technology standard " and obtains, and chooses the detection bacterial classification that ATCC8099 Escherichia coli and ATCC6538 staphylococcus aureus are antibiotic property performance.
Embodiment 1
A, at 88 DEG C, 6g bentonite and 200g dilute nitric acid solution (1.3mol/L) are mixed and made into mixed liquor M1;
B, at 65 DEG C, 200g mixed liquor M1 and 200g water are mixed and made into mixed liquor M2;
C, 400g mixed liquor M2,20g lignin benzene sulfonic acid sodium salt and 15g glycine are mixed and made into mixed liquor M3;
D, at pH be 6.5 condition under, mixed liquor M3 and silver nitrate are carried out haptoreaction and make and carry a silver-colored bentonite A1, wherein, the weight ratio of mixed liquor M3 and silver nitrate is 100:5.
The performance of this year silver-colored bentonitic antibiotic property is in table 1.
Embodiment 2
A, at 85 DEG C, 6g bentonite and 200g dilute nitric acid solution (1.2mol/L) are mixed and made into mixed liquor M1;
B, at 60 DEG C, 200g mixed liquor M1 and 200g water are mixed and made into mixed liquor M2;
C, 400g mixed liquor M2,4g lignin benzene sulfonic acid sodium salt and 4g glycine are mixed and made into mixed liquor M3;
D, at pH be 6.5 condition under, mixed liquor M3 and silver nitrate are carried out haptoreaction and make and carry a silver-colored bentonite A2, wherein, the weight ratio of mixed liquor M3 and silver nitrate is 100:3.
The performance of this year silver-colored bentonitic antibiotic property is in table 1.
Embodiment 3
A, at 90 DEG C, 6g bentonite and 200g dilute nitric acid solution (1.5mol/L) are mixed and made into mixed liquor M1;
B, at 70 DEG C, 200g mixed liquor M1 and 200g water are mixed and made into mixed liquor M2;
C, 400g mixed liquor M2,32g lignin benzene sulfonic acid sodium salt and 20g glycine are mixed and made into mixed liquor M3;
D, at pH be 7 condition under, mixed liquor M3 and silver nitrate are carried out haptoreaction and make and carry a silver-colored bentonite A3, wherein, the weight ratio of mixed liquor M3 and silver nitrate is 100:7.
The performance of this year silver-colored bentonitic antibiotic property is in table 1.
Comparative example 1
Carry out obtained year silver-colored bentonite B1 according to the method for embodiment 1, difference is, without lignin benzene sulfonic acid sodium salt in step c, the performance of this year silver-colored bentonitic antibiotic property is in table 1.
Comparative example 2
Carry out obtained year silver-colored bentonite B1 according to the method for embodiment 1, difference is, without amino acid in step c, the performance of this year silver-colored bentonitic antibiotic property is in table 1.
Comparative example 3
Carry out obtained year silver-colored bentonite B3 according to the method for embodiment 1, difference is, the pH of the catalytic environment in steps d is 6, and the performance of this year silver-colored bentonitic antibiotic property is in table 1.
Comparative example 4
Carry out obtained year silver-colored bentonite B4 according to the method for embodiment 1, difference is, the pH of the catalytic environment in steps d is 8, and the performance of this year silver-colored bentonitic antibiotic property is in table 1.
Table 1
By above-described embodiment and comparative example known, provided by the invention year silver-colored bentonite has excellent anti-microbial property.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible combination.
In addition, also can be combined between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (8)
1. a year silver-colored preparation method for bentonite, it is characterized in that, described preparation method comprises:
A, at 85-90 DEG C, bentonite and dilute nitric acid solution are mixed and made into mixed liquor M1;
B, at 60-70 DEG C, mixed liquor M1 and water are mixed and made into mixed liquor M2;
C, mixed liquor M2, lignin benzene sulfonic acid sodium salt and amino acid are mixed and made into mixed liquor M3;
D, at pH be 6.5-7 condition under, mixed liquor M3 and silver nitrate are carried out haptoreaction and make and carry a silver-colored bentonite.
2. preparation method according to claim 1, wherein, described amino acid be selected from glycine, glutamic acid, valine and phenyl alanine one or more.
3. preparation method according to claim 2, wherein, in step a, in described dilute nitric acid solution, the concentration of nitric acid is 1.2mol/L-1.5mol/L.
4. preparation method according to claim 3, wherein, in step a, relative to the described bentonite of 1 weight portion, the consumption of described dilute nitric acid solution is 30-40 weight portion.
5. preparation method according to claim 4, wherein, in stepb, relative to the described mixed liquor M1 of 100 weight portions, the consumption of described water is 80-120 weight portion.
6. preparation method according to claim 5, wherein, relative to the described mixed liquor M2 of 100 weight portions, the consumption of described lignin benzene sulfonic acid sodium salt is 4-8 weight portion, and described amino acid whose consumption is 1-5 weight portion.
7. preparation method according to claim 6, wherein, relative to the described mixed liquor M3 of 100 weight portions, the consumption of described silver nitrate is 3-7 weight portion.
8. carry a silver-colored bentonite, it is characterized in that, within described year, silver-colored bentonite is prepared from by the method described in any one in claim 1-7.
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| CN201410849777.5A CN104585235B (en) | 2014-12-31 | 2014-12-31 | Carry silver-colored bentonite and preparation method thereof |
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| CN201410849777.5A CN104585235B (en) | 2014-12-31 | 2014-12-31 | Carry silver-colored bentonite and preparation method thereof |
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| CN104585235B CN104585235B (en) | 2017-09-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105968416A (en) * | 2016-05-25 | 2016-09-28 | 吴琦 | Antibacterial agent for antibacterial plastics |
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| CN1557150A (en) * | 2004-02-13 | 2004-12-29 | 黄德欢 | Nanometer silver antiseptic powder preparation method |
| CN102125055A (en) * | 2010-12-02 | 2011-07-20 | 上海纳米技术及应用国家工程研究中心有限公司 | Sliver-carried nano-montmorillonite antibacterial agent and preparation method thereof |
| CN102599164A (en) * | 2012-01-19 | 2012-07-25 | 西安文理学院 | Preparation method of nano-grade layered silver-carrying-amino acid complex antibacterial agent |
| CN103461382A (en) * | 2013-08-08 | 2013-12-25 | 广东药学院 | Silver-loading modified montmorillonite antibacterial agent, preparation method and application thereof |
| CN104012573A (en) * | 2014-06-05 | 2014-09-03 | 朱岳 | Bentonite-loaded nano silver antibacterial agent and preparation method thereof |
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2014
- 2014-12-31 CN CN201410849777.5A patent/CN104585235B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1557150A (en) * | 2004-02-13 | 2004-12-29 | 黄德欢 | Nanometer silver antiseptic powder preparation method |
| CN102125055A (en) * | 2010-12-02 | 2011-07-20 | 上海纳米技术及应用国家工程研究中心有限公司 | Sliver-carried nano-montmorillonite antibacterial agent and preparation method thereof |
| CN102599164A (en) * | 2012-01-19 | 2012-07-25 | 西安文理学院 | Preparation method of nano-grade layered silver-carrying-amino acid complex antibacterial agent |
| CN103461382A (en) * | 2013-08-08 | 2013-12-25 | 广东药学院 | Silver-loading modified montmorillonite antibacterial agent, preparation method and application thereof |
| CN104012573A (en) * | 2014-06-05 | 2014-09-03 | 朱岳 | Bentonite-loaded nano silver antibacterial agent and preparation method thereof |
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| S.M. MAGA˜NA等: "Antibacterial activity of montmorillonites modified with silver", 《JOURNAL OF MOLECULAR CATALYSIS A: CHEMICAL》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105968416A (en) * | 2016-05-25 | 2016-09-28 | 吴琦 | Antibacterial agent for antibacterial plastics |
| CN105968416B (en) * | 2016-05-25 | 2019-01-18 | 吴琦 | A kind of antibacterial agent for antibiotic plastic |
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| CN104585235B (en) | 2017-09-01 |
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