CN103990457B - The preparation method of a kind of silver/silver vanadate composite photo-catalyst - Google Patents
The preparation method of a kind of silver/silver vanadate composite photo-catalyst Download PDFInfo
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- CN103990457B CN103990457B CN201410259218.9A CN201410259218A CN103990457B CN 103990457 B CN103990457 B CN 103990457B CN 201410259218 A CN201410259218 A CN 201410259218A CN 103990457 B CN103990457 B CN 103990457B
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Abstract
The present invention discloses the preparation method of a kind of silver/silver vanadate composite photo-catalyst, and concrete steps are as follows: by a 9 ~ 16cm
2silver foil be laid in horizontal surface, dip in hairbrush the H that 20 ~ 30mL concentration is 15 ~ 30% (mass percentage concentration)
2o
2the silver on silver foil surface, in silver foil surface, is oxidized to silver oxide by solution brush; By 3 ~ 5gV
2o
5powder dissolution is in the ammonia spirit of 20% ~ 25% (mass percentage concentration) in 25 ~ 30mL concentration, keeps ammoniacal liquor excessive, obtained Ammonium Vanadate Solution; Utilize hairbrush to dip Ammonium Vanadate Solution, brushing in surface is the silver foil surface of silver oxide, and under ammoniacal liquor effect, silver oxide is dissolved as silver ammonia complex, and the final silver vanadate that generates is deposited in silver foil surface, obtained a kind of silver/silver vanadate composite photo-catalyst.Silver foil is the raw material of catalyst, is again the carrier of catalyst, present invention, avoiding the separation problem of powder after participating in wastewater treatment.Silver vanadate is carried on silver surface, and silver-colored close contact, is conducive to the transmission of light induced electron and improves catalytic efficiency.
Description
Technical field
The invention belongs to water treatment field, relate to the preparation method of a kind of silver/silver vanadate composite photo-catalyst, particularly relate to a kind of catalysis material for the treatment of organic wastewater and preparation method thereof.
Background technology
Current, with the develop rapidly of industrial technology, the water resource that the mankind depend on for existence is all subject to pollution in various degree, and water resource pollution has become the problem demanding prompt solution that countries in the world face.The existence of the pollutant in water, particularly toxic organic pollutant, not only causes environmental pollution, ecological disruption, and serious harm human health.These organic pollutions comprise polycyclic aromatic hydrocarbon, Polychlorinated biphenyls, agricultural chemicals, environmental disturbances element, dyestuff etc.
Silver vanadate is that a class has visible light-responded novel photocatalyst, and its monoclinic phase energy gap, lower than 2.7eV, has higher visible light-responded, and stable in properties, become study hotspot in recent years.Silver vanadate has multiple preparation method, as solid-phase synthesis, coprecipitation, chemical deposition, metalorganic decomposition, hydro-thermal method, sonochemical method etc.Silver vanadate prepared by these methods is nano particle, although have higher specific area, easily reunites, and reduces treatment effect, and is difficult to and aqueous phase separation after process waste water, and its practicality is reduced greatly.When after catalyst and metal simple-substance compound, effectively electronics be can transmit, light induced electron and hole-recombination avoided.
Summary of the invention
The object of the invention is for overcoming the deficiencies in the prior art, the preparation method of a kind of silver/silver vanadate composite photo-catalyst is provided.
Object of the present invention can be achieved through the following technical solutions:
The preparation method of a kind of silver/silver vanadate composite photo-catalyst adopts following methods to obtain:
1) by a 9 ~ 16cm
2silver foil be laid in horizontal surface, dip in hairbrush the H that 20 ~ 30mL concentration is 15 ~ 30% (mass percentage concentration)
2o
2the silver on silver foil surface, in silver foil surface, is oxidized to silver oxide by solution brush;
2) by 3 ~ 5gV
2o
5powder dissolution is in the ammonia spirit of 20% ~ 25% (mass percentage concentration) in 25 ~ 30mL concentration, keeps ammoniacal liquor excessive, obtained Ammonium Vanadate Solution;
3) utilize hairbrush to dip Ammonium Vanadate Solution, brushing in surface is the silver foil surface of silver oxide, and under ammoniacal liquor effect, silver oxide is dissolved as silver ammonia complex, and the final silver vanadate that generates is deposited in silver foil surface, obtained a kind of silver/silver vanadate composite photo-catalyst.
The invention has the beneficial effects as follows:
1, silver foil is the raw material of catalyst, is again the carrier of catalyst, present invention, avoiding the separation problem of powder after participating in wastewater treatment.
2, silver vanadate is carried on silver surface, and silver-colored close contact, is conducive to the transmission of light induced electron, avoids compound, is conducive to improving catalytic efficiency.
Detailed description of the invention
Embodiment 1
By a 16cm
2silver foil be laid in horizontal surface, dip in hairbrush the H that 20mL concentration is 30% (mass percentage concentration)
2o
2the silver on silver foil surface, in silver foil surface, is oxidized to silver oxide by solution brush; By 5gV
2o
5powder dissolution is in the ammonia spirit of 25% (mass percentage concentration) in 30mL concentration, keeps ammoniacal liquor excessive, obtained Ammonium Vanadate Solution; Utilize hairbrush to dip Ammonium Vanadate Solution, brushing in surface is the silver foil surface of silver oxide, and under ammoniacal liquor effect, silver oxide is dissolved as silver ammonia complex, and the final silver vanadate that generates is deposited in silver foil surface, obtained a kind of silver/silver vanadate composite photo-catalyst.
Being joined by the silver obtained/silver vanadate composite photo-catalyst and 100mL concentration is housed is in the beaker of OrangeII waste water of 30mg/L, and under 300w iodine-tungsten lamp irradiates, react 60 minutes, percent of decolourization is 94.7%.
Embodiment 2
By a 9cm
2silver foil be laid in horizontal surface, dip in hairbrush the H that 20mL concentration is 30% (mass percentage concentration)
2o
2the silver on silver foil surface, in silver foil surface, is oxidized to silver oxide by solution brush; By 3gV
2o
5powder dissolution is in the ammonia spirit of 20%% (mass percentage concentration) in 25mL concentration, keeps ammoniacal liquor excessive, obtained Ammonium Vanadate Solution; Utilize hairbrush to dip Ammonium Vanadate Solution, brushing in surface is the silver foil surface of silver oxide, and under ammoniacal liquor effect, silver oxide is dissolved as silver ammonia complex, and the final silver vanadate that generates is deposited in silver foil surface, obtained a kind of silver/silver vanadate composite photo-catalyst.
Being joined by the silver obtained/silver vanadate composite photo-catalyst and 100mL concentration is housed is in the beaker of OrangeII waste water of 30mg/L, and under 300w iodine-tungsten lamp irradiates, react 60 minutes, percent of decolourization is 90.7%.
Embodiment 3
By a 12cm
2silver foil be laid in horizontal surface, dip in hairbrush the H that 30mL concentration is 15% (mass percentage concentration)
2o
2the silver on silver foil surface, in silver foil surface, is oxidized to silver oxide by solution brush; By 5gV
2o
5powder dissolution is in the ammonia spirit of 25% (mass percentage concentration) in 30mL concentration, keeps ammoniacal liquor excessive, obtained Ammonium Vanadate Solution; Utilize hairbrush to dip Ammonium Vanadate Solution, brushing in surface is the silver foil surface of silver oxide, and under ammoniacal liquor effect, silver oxide is dissolved as silver ammonia complex, and the final silver vanadate that generates is deposited in silver foil surface, obtained a kind of silver/silver vanadate composite photo-catalyst.
Being joined by the silver obtained/silver vanadate composite photo-catalyst and 100mL concentration is housed is in the beaker of methylene blue waste water of 30mg/L, and under 300w iodine-tungsten lamp irradiates, react 60 minutes, percent of decolourization is 90.2%.
Claims (1)
1. a preparation method for silver/silver vanadate composite photo-catalyst, is characterized in that in turn including the following steps:
1) by a 9 ~ 16cm
2silver foil be laid in horizontal surface, dip in hairbrush the H that 20 ~ 30mL concentration is 15 ~ 30% (mass percentage concentration)
2o
2the silver on silver foil surface, in silver foil surface, is oxidized to silver oxide by solution brush;
2) by 3 ~ 5gV
2o
5powder dissolution is in the ammonia spirit of 20% ~ 25% (mass percentage concentration) in 25 ~ 30mL concentration, keeps ammoniacal liquor excessive, obtained Ammonium Vanadate Solution;
3) utilize hairbrush to dip Ammonium Vanadate Solution, brushing in surface is the silver foil surface of silver oxide, and under ammoniacal liquor effect, silver oxide is dissolved as silver ammonia complex, and the final silver vanadate that generates is deposited in silver foil surface, obtained a kind of silver/silver vanadate composite photo-catalyst.
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| CN201410259218.9A CN103990457B (en) | 2014-06-11 | 2014-06-11 | The preparation method of a kind of silver/silver vanadate composite photo-catalyst |
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| CN201410259218.9A CN103990457B (en) | 2014-06-11 | 2014-06-11 | The preparation method of a kind of silver/silver vanadate composite photo-catalyst |
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| CN103990457A CN103990457A (en) | 2014-08-20 |
| CN103990457B true CN103990457B (en) | 2015-12-09 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103990477B (en) * | 2014-06-11 | 2015-12-30 | 常州大学 | The preparation method of a kind of silver orthophosphate/silver vanadate composite photo-catalyst |
| CN105432663A (en) * | 2015-11-17 | 2016-03-30 | 中国科学院海洋研究所 | Ag/AgVO3 plasma composite photocatalytic fungicide as well as preparation method and application thereof |
| CN105498771B (en) * | 2015-12-01 | 2018-05-25 | 合肥学院 | A kind of preparation method of silver/silver vanadate sheet composite photo-catalyst |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4137259A (en) * | 1976-07-09 | 1979-01-30 | Stamicarbon, B.V. | Catalytic gas phase oxidation of toluene to benzaldehyde and/or benzoic acid |
| CN102500371A (en) * | 2011-10-18 | 2012-06-20 | 山东大学 | Visible light response photocatalysis material Ag@Ag3VO4 and preparation method thereof |
| CN102600869A (en) * | 2012-02-23 | 2012-07-25 | 常州水木环保科技有限公司 | Synthetic method of supported silver phosphate photocatalyst |
| CN103990477A (en) * | 2014-06-11 | 2014-08-20 | 常州大学 | Preparation method of silver/silver vanadate composite photocatalyst |
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2014
- 2014-06-11 CN CN201410259218.9A patent/CN103990457B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4137259A (en) * | 1976-07-09 | 1979-01-30 | Stamicarbon, B.V. | Catalytic gas phase oxidation of toluene to benzaldehyde and/or benzoic acid |
| CN102500371A (en) * | 2011-10-18 | 2012-06-20 | 山东大学 | Visible light response photocatalysis material Ag@Ag3VO4 and preparation method thereof |
| CN102600869A (en) * | 2012-02-23 | 2012-07-25 | 常州水木环保科技有限公司 | Synthetic method of supported silver phosphate photocatalyst |
| CN103990477A (en) * | 2014-06-11 | 2014-08-20 | 常州大学 | Preparation method of silver/silver vanadate composite photocatalyst |
Non-Patent Citations (1)
| Title |
|---|
| Interaction of Ag ion with a vanadium pentoxide hydrate-Formation of silver vanadate at low temperature;S.Kittaka等;《Journal of Material Science》;20001231;第2000卷(第35期);2185-2192 * |
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