CN106807408B - Ce(IO3)4Application - Google Patents
Ce(IO3)4Application Download PDFInfo
- Publication number
- CN106807408B CN106807408B CN201510851367.9A CN201510851367A CN106807408B CN 106807408 B CN106807408 B CN 106807408B CN 201510851367 A CN201510851367 A CN 201510851367A CN 106807408 B CN106807408 B CN 106807408B
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- CN
- China
- Prior art keywords
- catalyst
- activity
- degradation
- light
- organic dye
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/06—Halogens; Compounds thereof
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
Abstract
The invention discloses a kind of Ce (IO3)4Application, the application example of this compound is provided for the first time.It, can be in the degradating organic dye pollutant under room temperature being protected from light completely as catalyst.Ce(IO3)4The activity of catalytic degradation rhodamine B (RhB) and methyl orange (MO) dyestuff under the conditions of being protected from light completely, hence it is evident that higher than commodity titanium dioxide (P25) photochemical catalyst under radiation of visible light.Ce (IO of the present invention3)4When catalytic degradation dyestuff, it is not required to that illumination, activity are higher, and preparation method is simple, preparation condition is mild, is conducive to promote and apply.
Description
Technical field
The invention belongs to technical field of environment pollution control, are related to Ce (IO3)4Compound exists as a kind of new catalyst
Application in degradating organic dye pollutant.
Background technique
With the increase of population, global printing and dyeing industry size constantly expands, a large amount of organic dyestuff of industry discharge
Pollutant, it has also become the important sources of whole world water pollution.Photocatalitic Technique of Semiconductor can directly utilize sunlight at room temperature
By dyestuff contaminant efficiently oxidative degradation.Therefore, by photocatalysis technology, sunlight is made full use of to carry out degradation of dye pollutant
It is a beneficial way of Enviromental Pollution Treatment.Because ultraviolet light only accounts for 4% or so of sunshine gross energy, and visible light accounts for
46% or so, so being to utilize the visible light in sunlight using the key of solar energy.Therefore, it is seen that the light of photoresponse type is urged
Agent is with important application prospects in current field of environmental improvement.However, because of the limitation of band structure, along with high light
Raw Carrier recombination rate, it is seen that the activity and durability of photocatalyst for degrading dyestuff contaminant are generally lower.
Another beneficial way of degradation of dye pollutant is not by illumination, energy-efficient under room temperature using catalysis
Agent carries out catalytic degradation.Develop high activity, high durability catalyst with for no light, dyestuff contaminant under room temperature
Degradation has important practical prospect and learning value in field of environment pollution control.
Many catalyst can show catalytic activity or even high activity under conditions of having illumination, but this active
Obtain, usually to this condition of illumination highly dependent upon.If intensity of illumination is very weak, or does not have illumination, then can not show to urge
Change activity, this is restricted the application of catalyst.
Ce(IO3)4It is a kind of inorganic compound, although its preparation method and composition identification are already it has been reported that mesh
It is preceding that there has been no patents and document report Ce (IO3)4Application study, especially its application study as catalyst.
Summary of the invention
It is an object of that present invention to provide Ce (IO3)4Compound provides this in a kind of new opplication of field of environmental improvement for the first time
The application example of compound.
The technical solution of the present invention is as follows:
A kind of Ce (IO3)4Application, Ce (IO3)4As catalyst degradation organic dye pollutant, the step of concrete application
Are as follows:
(1) using organic dye pollutant as substrate, with Ce (IO3)4Catalytic degradation is carried out for catalyst；
(2) Ce (IO3)4The activity rating of catalyst: measuring the degradation rate of organic dye pollutant, degradable with its
The required time measures its catalytic activity；
Above-mentioned Ce (IO3)4Application, the organic dye pollutant is preferably rhodamine B (RhB) or methyl orange
(MO), the catalytic degradation, temperature are 10-25 DEG C, and illumination condition is to be protected from light completely or natural light irradiation.
The beneficial effects of the present invention are:
(1) the experimental results showed that, Ce (IO3)4Even if catalytic degradation activity under conditions of being protected from light completely, it is also significantly high
Commercial titanium dioxide (P25) photochemical catalyst under radiation of visible light, solves the problems, such as that existing catalyst activity is low, solves simultaneously
Determined existing photochemical catalyst active heavy dependence illumination condition the problem of.
(2) Ce (IO of the invention3)4Method for preparing catalyst is simple, preparation condition is mild, is conducive to promote and apply.
Detailed description of the invention
Fig. 1 is Ce (IO prepared by the embodiment of the present invention 13)4The SEM of catalyst schemes.
Fig. 2 is Ce (IO prepared by the embodiment of the present invention 13)4The EDS result of catalyst.
Fig. 3 is Ce (IO prepared by the embodiment of the present invention 13)4With the Activity Results figure of P25 photocatalyst for degrading RhB dyestuff.
Wherein,C 0 The initial concentration of RhB before being added for catalyst,CFor the concentration of RhB under any moment in catalytic process.
Fig. 4 is Ce (IO prepared by the embodiment of the present invention 13)4With the Activity Results figure of P25 photocatalyst for degrading MO dyestuff.Its
In,C 0 The initial concentration of MO before being added for catalyst,CFor the concentration of MO under any moment in catalytic process.
Specific embodiment
Here is Ce (IO of the present invention3)4With the specific embodiment of application study, following embodiment is further intended to specifically
The bright present invention, is not intended to limit the present invention.
Embodiment 1
(1) Ce (IO3)4Preparation
By 1 mmol ammonium ceric nitrate ((NH4)2Ce(NO3)6) 40 mL deionized waters, obtain ceric ammonium nitrate solution.By 4
Sodium iodate (the NaIO of mmol3) 40 mL deionized waters are dissolved in, obtain sodium iodide solution.At room temperature, in stirring sodium iodide solution
In the process, ammonium ceric nitrate is added dropwise in sodium iodide solution.After being added dropwise, continue to stir 1 h.By gained precipitating spend from
Sub- water washing (uses 50 mL of deionized water) twice every time, after centrifuge separation, is placed in 12 h of oven drying that temperature is 60 DEG C, i.e.,
Obtain Ce (IO3)4Sample.
(2) Ce (IO3)4Characterization
Scheme from the SEM of Fig. 1 as it can be seen that Ce (IO3)4Sample has the random pattern of 0.1-10 nm size.The SEM of Fig. 2 schemes
EDS the results show that contained atom Ce, I, O several ratios of sample are close to 1: 4: 12, this illustrates Ce (IO3)4Sample
It is prepared by success.
(3) Ce (IO3)4The activity rating of catalyst degradation MO dyestuff contaminant
By gained Ce (IO3)4Sample is degradation substrate with RhB or MO, carries out catalytically active assessment, and by its Activity Results
It is compared with P25 photochemical catalyst.
Ce(IO3)4The active testing of catalytic degradation RhB
By the Ce (IO of 150 mg3)4Catalyst is placed in the RhB solution that 100 mL concentration are 10 mg/L and (is contained in 400 mL
Uncovered beaker) in, in the stirring at room temperature being protected from light completely.It samples in different time points respectively, supernatant is taken after centrifuge separation,
Supernatant is diluted to obtain sample.With ultraviolet specrophotometer, (general analysis TU1810, the general analysis all purpose instrument Limited Liability in Beijing are public
Department) absorbance of the measurement sample at 554 nm.The RhB concentration of sample is finally calculated according to concentration-absorbance standard curve.
Ce(IO3)4The active testing of catalytic degradation MO
By the Ce (IO of 150 mg3)4Catalyst is placed in the MO solution that 100 mL concentration are 10 mg/L and (is contained in 400 mL's
Uncovered beaker) in, in the stirring at room temperature being protected from light completely.It samples in different time points respectively, supernatant is taken after centrifuge separation, it will
Supernatant dilutes to obtain sample.With ultraviolet specrophotometer (general analysis TU1810, Beijing Puxi General Instrument Co., Ltd)
Measure absorbance of the sample at 465 nm.The MO concentration of sample is finally calculated according to concentration-absorbance standard curve.
The active testing of P25 photocatalytic degradation RhB
The P25 of 150 mg is placed in the RhB solution (uncovered beaker for being contained in 400 mL) that 100 mL concentration are 10 mg/L
In, it is protected from light 40 min of stirring at room temperature, rhodamine molecule is made to reach absorption-desorption equilibrium on the surface P25.Then 500W xenon is opened
Lamp (PLS-SXE300, Beijing Bo Feilai Science and Technology Ltd.) filters off the light that wavelength is lower than 420nm, RhB solution liquid with optical filter
Face is located at immediately below xenon lamp, and the distance between liquid level and fluorescent tube center are 14 centimetres (irradiation level are 400 mW/cm2).Locate in this way
Reason is to provide for preferably illumination condition, to guarantee that P25 can sufficiently show its catalytic activity.Respectively in different time
Point sampling, takes supernatant, supernatant is diluted to obtain sample after centrifuge separation.With ultraviolet specrophotometer (general analysis TU1810, north
Jing Puxi all purpose instrument Co., Ltd) absorbance of the measurement sample at 554 nm.Finally according to concentration-absorbance standard
The RhB concentration of curve calculating sample.
The active testing of P25 photocatalytic degradation MO
The P25 of 150 mg is placed in the MO solution (uncovered beaker for being contained in 400 mL) that 100 mL concentration are 10 mg/L
In, it is protected from light 40 min of stirring at room temperature, rhodamine molecule is made to reach absorption-desorption equilibrium on the surface P25.Then 500W xenon is opened
Lamp (PLS-SXE300, Beijing Bo Feilai Science and Technology Ltd.) filters off the light that wavelength is lower than 420nm, MO solution liquid with optical filter
Face is located at immediately below xenon lamp, and the distance between liquid level and fluorescent tube center are 14 centimetres (irradiation level are 400 mW/cm2).Locate in this way
Reason is to provide for preferably illumination condition, to guarantee that P25 can sufficiently show its catalytic activity.Respectively in different time
Point sampling, takes supernatant, supernatant is diluted to obtain sample after centrifuge separation.With ultraviolet specrophotometer (general analysis TU1810, north
Jing Puxi all purpose instrument Co., Ltd) absorbance of the measurement sample at 465 nm.Finally according to concentration-absorbance standard
The MO concentration of curve calculating sample.
As seen from Figure 3, any point-in-time within 0-80 min, Ce (IO3)4The corresponding C/C of catalyst0It is worth all obvious
C/C corresponding lower than P25 photochemical catalyst0.From fig. 4, it can be seen that any point-in-time within 0-70 min, Ce (IO3)4Catalyst
Corresponding C/C0Value is all significantly lower than the corresponding C/C of P25 photochemical catalyst0.Even if this explanation gives P25 photochemical catalyst preferably light
According to condition, and to Ce (IO3)4It is protected from light, Ce (IO3)4The activity of catalyst degradation RhB or MO are also apparently higher than P25 light
Catalyst.Therefore, Ce (IO3)4Catalyst degradation RhB or MO are an energy conservation, efficient process, in terms of environmental pollution improvement
There is potential application prospect.
Claims (2)
1. a kind of Ce (IO3)4Application, which is characterized in that Ce (IO3)4As catalyst degradation organic dye pollutant, specifically answer
With the step of are as follows:
(1) using organic dye pollutant as substrate, with Ce (IO3)4Catalytic degradation is carried out for catalyst；
(2) Ce (IO3)4The activity rating of catalyst: measuring the degradation rate of organic dye pollutant, degradable required with its
Time measure its catalytic activity；
The organic dye pollutant is rhodamine B or methyl orange.
2. Ce (IO according to claim 13)4Application, it is characterised in that: the catalytic degradation, temperature 10-25
DEG C, illumination condition is to be protected from light completely or natural light irradiation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510851367.9A CN106807408B (en) | 2015-11-30 | 2015-11-30 | Ce(IO3)4Application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510851367.9A CN106807408B (en) | 2015-11-30 | 2015-11-30 | Ce(IO3)4Application |
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| CN106807408A CN106807408A (en) | 2017-06-09 |
| CN106807408B true CN106807408B (en) | 2019-06-25 |
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| CN111001312B (en) * | 2019-12-19 | 2022-03-11 | 井冈山大学 | Organic-inorganic hybrid membrane and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922287A (en) * | 2014-04-23 | 2014-07-16 | 山东大学 | Lanthanide series iodate crystal with high photocatalysis activity and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922287A (en) * | 2014-04-23 | 2014-07-16 | 山东大学 | Lanthanide series iodate crystal with high photocatalysis activity and preparation method thereof |
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