CN103464186A - Lead phosphate and silver phosphate composite photocatalyst and preparation method thereof - Google Patents
Lead phosphate and silver phosphate composite photocatalyst and preparation method thereof Download PDFInfo
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- CN103464186A CN103464186A CN 201310454571 CN201310454571A CN103464186A CN 103464186 A CN103464186 A CN 103464186A CN 201310454571 CN201310454571 CN 201310454571 CN 201310454571 A CN201310454571 A CN 201310454571A CN 103464186 A CN103464186 A CN 103464186A
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Abstract
The invention relates to a lead phosphate and silver phosphate composite photocatalyst and a preparation method thereof, and belongs to the field of inorganic photocatalytic materials. The lead phosphate and silver phosphate composite photocatalyst comprises lead phosphate and silver phosphate. The photocatalyst prepared through the method has photocatalytic activity in the wavelength range from 400 to 800nm, and can catalyze and oxidize organic compounds in radiation of visible light or natural light so that the organic compounds are mineralized into non-toxic and harmless small-molecule matter.
Description
Technical field
The present invention relates to a kind of photochemical catalyst.
The invention still further relates to the preparation method of above-mentioned photochemical catalyst.
The invention still further relates to the purposes of above-mentioned photochemical catalyst.
Background technology
Photocatalysis technology is that to utilize inexhaustible, nexhaustible sunshine to make its mineralising as energy catalytic oxidation organic pollution be nontoxic material.This makes this technical costs cheap and can be to environment, also can not cause and consume and waste non-renewable energy resources.Because photocatalysis technology has advantages of that these are outstanding, become one of focus that the area research persons such as current chemistry, physics, material, environment pay close attention to.Photocatalytic semiconductor that at present can large-scale application is titanium dioxide, but titanium dioxide can only be by ultraviolet excitation, thus development of new to have visible light-responded photochemical catalyst be a huge challenge.In this patent, we have developed the compound silver orthophosphate base optic catalytic material of a kind of lead phosphate, and compound by lead phosphate not only can significantly be improved the photocatalysis performance of silver orthophosphate, but also can be improved the stability of silver orthophosphate.
Summary of the invention
Meaning of the present invention is to provide a kind of highly active photochemical catalyst, and this lead phosphate silver phosphate composite photocatalyst can be effectively by excited by visible light, and higher stability is arranged, and preparation condition is convenient simultaneously, cost is lower.
This photochemical catalyst provided by the invention is lead phosphate silver orthophosphate composite particles.
The preparation method of lead phosphate silver phosphate composite photocatalyst provided by the invention is as follows:
A certain amount of plumbi nitras and silver nitrate are dissolved in a certain amount of deionized water and are made into the certain density silver ionized water solution containing lead ion; A certain amount of sodium phosphate is dissolved in a certain amount of deionized water; A certain amount of sodium phosphate aqueous solution is dropwise joined in the silver ionized water solution containing lead ion, after continuing to stir 30min, by the precipitation suction filtration produced, use successively distilled water and absolute ethanol washing, then 80 ℃ of vacuum drying 6h obtain corresponding catalyst.
Photocatalytic activity test concrete grammar and the condition of separating methyl orange in visible radiation decline are as follows:
The photocatalytic activity test of composite photo-catalyst is to carry out in homemade reactor.Adopting 300W xenon lamp (λ>400nm) is radiating light source, the methyl orange aqueous solution that reactant liquor is 100mL10mg/L, and catalyst solubility is 1g/L.Extract a small amount of reactant liquor every 2min under violent stirring, measure solution absorbance at the 463nm place.Determine solution concentration according to the concentration one absorbance calibration curve of methyl orange again.
Specific embodiments
Embodiment 1
The 0.001mol plumbi nitras is dissolved in to the silver ionized water solution of 90mL1mol/L; By the 30mL sodium phosphate aqueous solution, slowly be added dropwise in silver ion solution; Vigorous stirring 20min; By the precipitation suction filtration produced, use successively distilled water and absolute ethanol washing, then 80 ℃ of vacuum drying 6h obtain lead phosphate silver orthophosphate photochemical catalyst.
Embodiment 2
Silver nitrate in embodiment 1 is changed to silver acetate, and other condition is constant.
Embodiment 3
Sodium phosphate in embodiment 1 is changed to ammonium phosphate, and other condition is constant.
Embodiment 4
The plumbi nitras of 0.001mol in embodiment 1 is changed to 0.0005mol, and other condition is constant.
Embodiment 5
The plumbi nitras of 0.001mol in embodiment 1 is changed to 0.0015mol, and other condition is constant.
The prepared photochemical catalyst of the present invention can be carried on carrier, the invention is not restricted to above embodiment.
Gained photochemical catalyst in embodiment has been carried out to the light-catalyzed reaction test under the radiation of visible light, and concrete outcome is as table 1.
The catalytic performance of table 1 lead phosphate silver orthophosphate photochemical catalyst
Claims (2)
1. lead phosphate/silver phosphate composite photocatalyst is characterized in that comprising following synthesis step:
A certain amount of plumbi nitras and silver nitrate are dissolved in a certain amount of deionized water and are made into the certain density silver ionized water solution containing lead ion; A certain amount of sodium phosphate is dissolved in a certain amount of deionized water; A certain amount of sodium phosphate aqueous solution is dropwise joined in the silver ionized water solution containing lead ion, after continuing to stir 30min, by the precipitation suction filtration produced, use successively distilled water and absolute ethanol washing, then 80 ℃ of vacuum drying 6h obtain corresponding catalyst.
2. according to the photochemical catalyst in claim 1, it is characterized in that under the radiation of light can degradable organic pollutant, and mineralising is nontoxic small-molecule substance.
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| CN 201310454571 CN103464186A (en) | 2013-09-29 | 2013-09-29 | Lead phosphate and silver phosphate composite photocatalyst and preparation method thereof |
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| CN 201310454571 CN103464186A (en) | 2013-09-29 | 2013-09-29 | Lead phosphate and silver phosphate composite photocatalyst and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106311296A (en) * | 2016-10-19 | 2017-01-11 | 常州大学 | Preparation method of iron phosphate/yttrium phosphate composite catalyst |
| CN106378168A (en) * | 2016-10-19 | 2017-02-08 | 常州大学 | Preparation method of manganese phosphate/yttrium phosphate composite catalyst |
| CN106492860A (en) * | 2016-10-19 | 2017-03-15 | 常州大学 | A kind of preparation method of iron phosphate/manganese phosphate/yttrium phosphate composite catalyst |
| CN106540725A (en) * | 2016-10-19 | 2017-03-29 | 常州大学 | A kind of preparation method of tungsten oxide compound phosphoric acid yttrium catalyst |
| CN106540723A (en) * | 2016-10-19 | 2017-03-29 | 常州大学 | A kind of preparation method of D2EHDTPA silver catalyst |
| CN107308963A (en) * | 2017-07-11 | 2017-11-03 | 柳州若思纳米材料科技有限公司 | A kind of tabular basic zirconium phosphate loads the preparation method of indium phosphate catalyst |
| CN107837814A (en) * | 2016-09-18 | 2018-03-27 | 天津工业大学 | Polyphosphoric acid lead/silver orthophosphate catalysis material and its synthetic method |
| CN109248696A (en) * | 2018-10-25 | 2019-01-22 | 天津工业大学 | Fullerene compound phosphoric acid ag material and synthetic method |
-
2013
- 2013-09-29 CN CN 201310454571 patent/CN103464186A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107837814A (en) * | 2016-09-18 | 2018-03-27 | 天津工业大学 | Polyphosphoric acid lead/silver orthophosphate catalysis material and its synthetic method |
| CN106311296A (en) * | 2016-10-19 | 2017-01-11 | 常州大学 | Preparation method of iron phosphate/yttrium phosphate composite catalyst |
| CN106378168A (en) * | 2016-10-19 | 2017-02-08 | 常州大学 | Preparation method of manganese phosphate/yttrium phosphate composite catalyst |
| CN106492860A (en) * | 2016-10-19 | 2017-03-15 | 常州大学 | A kind of preparation method of iron phosphate/manganese phosphate/yttrium phosphate composite catalyst |
| CN106540725A (en) * | 2016-10-19 | 2017-03-29 | 常州大学 | A kind of preparation method of tungsten oxide compound phosphoric acid yttrium catalyst |
| CN106540723A (en) * | 2016-10-19 | 2017-03-29 | 常州大学 | A kind of preparation method of D2EHDTPA silver catalyst |
| CN106540723B (en) * | 2016-10-19 | 2019-01-29 | 常州大学 | A kind of preparation method of thiophosphoric acid silver catalyst |
| CN107308963A (en) * | 2017-07-11 | 2017-11-03 | 柳州若思纳米材料科技有限公司 | A kind of tabular basic zirconium phosphate loads the preparation method of indium phosphate catalyst |
| CN109248696A (en) * | 2018-10-25 | 2019-01-22 | 天津工业大学 | Fullerene compound phosphoric acid ag material and synthetic method |
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