CN105233843A - Method for preparing Ag/AgCl/NaTaO3 plasma composite photocatalyst - Google Patents
Method for preparing Ag/AgCl/NaTaO3 plasma composite photocatalyst Download PDFInfo
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- CN105233843A CN105233843A CN201510622465.5A CN201510622465A CN105233843A CN 105233843 A CN105233843 A CN 105233843A CN 201510622465 A CN201510622465 A CN 201510622465A CN 105233843 A CN105233843 A CN 105233843A
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Abstract
The present invention relates to an alkaline earth metal sodium tantalate, especially to a method for preparing an Ag/AgCl/NaTaO3 plasma composite photocatalyst by using hydrochloric acid, silver nitrate and sodium tantalate as raw materials. The method comprises: adding sodium tantalate to a silver nitrate solution, adding an excess amount of hydrochloric acid under stirring, maintaining the stirring state for 2 h, irradiating for 20 min under 300 W xenon lamp, filtering after completing the reaction, washing, and drying to obtain the final product. According to the present invention, the results of the Rhodamine B (RhB) degradation experiment under visible light prove that the prepared composite photocatalyst has good photocatalytic activity.
Description
Technical field
The present invention relates to alkaline-earth metal sodium tantalate, refer in particular to one with hydrochloric acid, silver nitrate and sodium tantalate for Ag/AgCl/NaTaO prepared by raw material
3the method of plasma composite photo-catalyst, especially a kind of preparation technology is simple, and product has the nano composite photo-catalyst preparation method of good visible light catalysis activity.
Technical background
Alkaline-earth metal sodium tantalate (NaTaO
3) conduction band be made up of Ta5d track, far away higher than Ti3d track, therefore with titanium dioxide (TiO
2) compare, the electronics that optical excitation sodium tantalate produces has stronger reducing power, is more conducive to realizing high efficiency photocatalysis decomposing organic matter; At present, the people such as XiaLi (J.Phys.Chem.C2009,113,19411 – 19418.) have studied and utilize the pattern of water heat transfer sodium tantalate when different time and temperature, different hydro sodium oxide molybdena and tantalum pentoxide proportioning to change, finally prepare cubical sodium tantalate, and the effect of methylene blue is decomposed in checking under ultraviolet light; But at solar spectrum medium ultraviolet light less than 5%, visible region reaches more than 50%; Thus, some researchers utilize Ag/AgCl load on nanometer semiconductor compounds surface, construct out the compound system with plasma resonance effect; This system has the effect of efficiency utilization visible ray, the people such as JiaguoYu (J.Phys.Chem.C2009,113,16394 – 16401) prepare Ag/AgCl load on Nano tube array of titanium dioxide surface, SaraNaghizadeh-Alamdari. people (SolidStateSciences2015 is waited, 40,111-120) prepare Ag/AgCl load on ZnO surface, this utilize plasma construct composite photo-catalyst application very wide, but constructing Ag/AgCl load does not also have in the application on nano sodium tantalate surface.
Summary of the invention
The object of the invention be to provide a kind of with hydrochloric acid, silver nitrate and sodium tantalate for raw material, utilize deposition sedimentation and photoreduction met hod to synthesize the method for the nano composite photo-catalyst with good visible light catalysis activity.
The present invention is realized by following steps:
(1) sodium tantalate is got, join in the solution containing silver nitrate, under agitation add excessive hydrochloric acid, make silver nitrate all be converted into silver chlorate, continue to stir, then be put into below xenon lamp and irradiate, make a part of silver chlorate be converted into silver, after reaction terminates, by sedimentation and filtration, washing, dries, obtains Ag/AgCl/NaTaO
3plasma nano composite photo-catalyst, wherein Ag/AgCl quality sum and NaTaO
3mass ratio be 10%-40%.
Further, the described time of continuing to stir is 2 hours.
Further, be put into irradiation below xenon lamp described in refer to irradiate 20 minutes below 300W xenon lamp.
Further, Ag/AgCl and NaTaO
3mass ratio be 30%.
(2) Ag/AgCl/NaTaO prepared by the present invention
3plasma nano composite photo-catalyst, crystallization is complete, pattern rule, favorable dispersibility.
(3) instruments such as X-ray diffractometer (XRD), SEM (SEM), transmission electron microscope (TEM), x-ray photoelectron spectroscopy instrument are utilized to carry out structural analysis to product, with rhodamine B solution for target dyestuff carries out photocatalytic degradation experiment, absorbance is measured, to assess its photocatalytic activity by ultraviolet-visible spectrophotometer.
Accompanying drawing explanation
Fig. 1 is prepared Ag/AgCl/NaTaO
3the XRD diffraction spectrogram of plasma nano composite photo-catalyst; Wherein, represent the peak of AgCl by " # ", represent the peak of Ag with " * ".
Fig. 2 is prepared Ag/AgCl/NaTaO
3the transmission electron microscope photo (B) of plasma nano composite photo-catalyst and pure NaTaO
3scanning transmission electron microscope photo (A) comparison diagram.
Fig. 3 is prepared Ag/AgCl/NaTaO
3plasma nano composite photo-catalyst energy dispersion X ray spectrum figure.
Fig. 4 is prepared Ag/AgCl/NaTaO
3the x-ray photoelectron spectroscopy figure of plasma nano composite photo-catalyst.
Fig. 5 is prepared Ag/AgCl/NaTaO
3the time m-degradation rate graph of a relation of the visible light photocatalytic degradation rhodamine B solution of plasma nano composite photo-catalyst.
Detailed description of the invention
embodiment 1Ag/AgCl/NaTaO
3
the preparation of plasma nano composite photo-catalyst
400mg nano sodium tantalate joins 25mL respectively and contains 1.6, in the liquor argenti nitratis ophthalmicus of 3.2,4.8,6.4g/L, magnetic agitation, then add excessive hydrochloric acid, continue stirring 2 hours, be then put into below 300W xenon lamp and irradiate 20 minutes, after reaction terminates, products therefrom deionized water is cleaned, filters, 60 DEG C of oven dry in thermostatic drying chamber.
embodiment 2Ag/AgCl/NaTaO
3
the phenetic analysis of plasma nano composite photo-catalyst
As shown in Figure 1, as can be seen from the figure along with the increase of Ag/AgCl amount, engendered the peak of AgCl and Ag, illustrated that we have successfully prepared Ag/AgCl/NaTaO
3plasma nano composite photo-catalyst.
As shown in Figure 2, pure NaTaO can be seen in (A) figure
3for nanometer blocks, the existence of Ag and AgCl nano particle in (B) figure, can be seen.
As shown in Figure 3, in collection of illustrative plates, demonstrate silver, chlorine, tantalum, sodium, the existence of oxygen element.
As shown in Figure 4, the existence seeing silver and chlorine essence can be known in figure.
embodiment 3Ag/AgCl/NaTaO
3
the visible light catalysis activity experiment of plasma nano composite photo-catalyst
(1) compound concentration is the rhodamine B solution of 10mg/L, and the solution prepared is placed in dark place.
(2) Ag/AgCl/NaTaO3 plasma nano composite photo-catalyst 0.1g is taken, be placed in photo catalysis reactor respectively, add the target degradation solution that 100mL step (1) prepares, after magnetic agitation 30min photochemical catalyst to be composite is uniformly dispersed, open water source, light source, carries out photocatalytic degradation experiment.
(3) every 10min draws the photocatalytic degradation liquid in reactor, for the measurement of UV-visible absorbance after centrifugal.
(4) prepared as seen from Figure 5 nano composite photo-catalyst has excellent visible light catalysis activity, especially Ag/AgCl and NaTaO
3mass ratio be the sample of 30%, than pure NaTaO
3all want high with the degrading activity of Ag/AgCl.
Claims (4)
1. prepare Ag/AgCl/NaTaO for one kind
3the method of plasma composite photo-catalyst, is characterized in that concrete steps are as follows: get sodium tantalate, joins in the solution containing silver nitrate, under agitation add excessive hydrochloric acid, make silver nitrate all be converted into silver chlorate, continue to stir, be then put into below xenon lamp and irradiate, a part of silver chlorate is made to be converted into silver, after reaction terminates, by sedimentation and filtration, washing, dry, obtain Ag/AgCl/NaTaO
3plasma nano composite photo-catalyst, wherein Ag/AgCl quality sum and NaTaO
3mass ratio be 10%-40%.
2. one as claimed in claim 1 prepares Ag/AgCl/NaTaO
3the method of plasma composite photo-catalyst, is characterized in that: the described time of continuing to stir is 2 hours.
3. one as claimed in claim 1 prepares Ag/AgCl/NaTaO
3the method of plasma composite photo-catalyst, is characterized in that: described in be put into below xenon lamp irradiate refer to below 300W xenon lamp irradiate 20 minutes.
4. one as claimed in claim 1 prepares Ag/AgCl/NaTaO
3the method of plasma composite photo-catalyst, is characterized in that: Ag/AgCl and NaTaO
3mass ratio be 30%.
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| CN201510622465.5A CN105233843B (en) | 2015-09-28 | 2015-09-28 | One kind prepares Ag/AgCl/NaTaO3The method of plasma composite photo-catalyst |
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| CN201510622465.5A CN105233843B (en) | 2015-09-28 | 2015-09-28 | One kind prepares Ag/AgCl/NaTaO3The method of plasma composite photo-catalyst |
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| CN105233843A true CN105233843A (en) | 2016-01-13 |
| CN105233843B CN105233843B (en) | 2017-11-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106807413A (en) * | 2017-02-17 | 2017-06-09 | 盐城工学院 | A kind of Ag@AgBr/CaTiO with Plasmon Surface Resonance effect3Photochemical catalyst and preparation method thereof |
| CN106915797A (en) * | 2017-04-07 | 2017-07-04 | 江苏大学 | A kind of method of gold chloride assisted recombination photocatalyst for degrading rhodamine B |
| CN107537522A (en) * | 2017-09-25 | 2018-01-05 | 中国科学院广州地球化学研究所 | Composite of silver-colored silver halide load iron nano-mineral and preparation method thereof |
| CN108690602A (en) * | 2018-05-22 | 2018-10-23 | 四川大学 | A method of enhancing fullerene fluorescence property |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103706363A (en) * | 2013-12-18 | 2014-04-09 | 江苏大学 | Method for preparing composite photocatalyst with silver loaded on surface of nano sodium tantalate |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103706363A (en) * | 2013-12-18 | 2014-04-09 | 江苏大学 | Method for preparing composite photocatalyst with silver loaded on surface of nano sodium tantalate |
Non-Patent Citations (2)
| Title |
|---|
| DR. GOUSIA BEGUM ET AL: "Controlled Orientation in a Bio-Inspired Assembly of Ag/AgCl/ZnO Nanostructures Enables Enhancement in Visible-Light-Induced Photocatalytic Performance", 《CHEMISTRY-A EUROPEAN JOURNAL 》 * |
| LIHONG DONG ET AL: "In Situ Photoactivated AgCl/Ag Nanocomposites with Enhanced Visible Light Photocatalytic Antibacterial Activity", 《EUROPEAN JOURNAL OF INORGANIC CHEMISTRY》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106807413A (en) * | 2017-02-17 | 2017-06-09 | 盐城工学院 | A kind of Ag@AgBr/CaTiO with Plasmon Surface Resonance effect3Photochemical catalyst and preparation method thereof |
| CN106915797A (en) * | 2017-04-07 | 2017-07-04 | 江苏大学 | A kind of method of gold chloride assisted recombination photocatalyst for degrading rhodamine B |
| CN107537522A (en) * | 2017-09-25 | 2018-01-05 | 中国科学院广州地球化学研究所 | Composite of silver-colored silver halide load iron nano-mineral and preparation method thereof |
| CN107537522B (en) * | 2017-09-25 | 2019-08-09 | 中国科学院广州地球化学研究所 | Silver-silver halide load iron nano-mineral composite material and preparation method |
| CN108690602A (en) * | 2018-05-22 | 2018-10-23 | 四川大学 | A method of enhancing fullerene fluorescence property |
| CN108690602B (en) * | 2018-05-22 | 2020-12-18 | 四川大学 | Method for enhancing fluorescence property of fullerene |
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| CN105233843B (en) | 2017-11-17 |
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