CN108435231A - A kind of TiO2/ CN23 photochemical catalysts and the preparation method and application thereof - Google Patents
A kind of TiO2/ CN23 photochemical catalysts and the preparation method and application thereof Download PDFInfo
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- CN108435231A CN108435231A CN201810396967.4A CN201810396967A CN108435231A CN 108435231 A CN108435231 A CN 108435231A CN 201810396967 A CN201810396967 A CN 201810396967A CN 108435231 A CN108435231 A CN 108435231A
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 239000003054 catalyst Substances 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 239000013078 crystal Substances 0.000 claims abstract description 11
- 239000004202 carbamide Substances 0.000 claims abstract description 7
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims abstract description 5
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 8
- 238000005119 centrifugation Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 239000002244 precipitate Substances 0.000 claims description 6
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 6
- 239000012498 ultrapure water Substances 0.000 claims description 6
- 238000002604 ultrasonography Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 229920000877 Melamine resin Polymers 0.000 claims description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000013019 agitation Methods 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 238000003760 magnetic stirring Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 230000003197 catalytic effect Effects 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 4
- 230000002776 aggregation Effects 0.000 abstract description 3
- 238000004220 aggregation Methods 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 231100000252 nontoxic Toxicity 0.000 abstract description 2
- 230000003000 nontoxic effect Effects 0.000 abstract description 2
- 239000003651 drinking water Substances 0.000 description 6
- 235000020188 drinking water Nutrition 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000001699 photocatalysis Effects 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000012851 eutrophication Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000007146 photocatalysis Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000035943 smell Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- B01J27/24—Nitrogen compounds
-
- B01J35/39—
-
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/18—PO4-P
-
- 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 belongs to visible light catalytic technical fields, are related to a kind of TiO2/ CN23 photochemical catalysts and the preparation method and application thereof.It is an object of the invention to g C3N4Photochemical catalyst is modified, and modified catalyst is applied to processing eutrophic raw water.The method of modifying of the present invention includes the g C that will be prepared as raw material using urea3N4With the g C prepared as raw material using melamine3N4By 2:3 ratio is mixed with to obtain CN23 and TiO2Load prepares TiO2/CN23。TiO2/ CN23 crystal shapes are more regular, are in small spherical shape, and reunion condenses together.The agent structure of the crystal is g C3N4, TiO2It is particle studded in g C3N4Surface.g‑C3N4It can play and inhibit TiO2The effect of aggregation, makes TiO2It spreads out, helps to fully absorb light, improve catalytic efficiency.Catalyst preparation process of the present invention is simple, mild condition, stability are good, of low cost, have high catalytic efficiency, environmental protection and energy saving, it is nontoxic and pollution-free outstanding advantages of, meet environmental-friendly requirement, tool has a broad prospect of the use.
Description
Technical field：
The invention belongs to visible light catalytic technical fields, are related to a kind of TiO2/ CN23 photochemical catalysts and preparation method thereof with answer
With.
Background technology：
In recent years, the drinking water source in China's overwhelming majority cities and towns all receives different degrees of pollution, drinking water safety face
Face huge challenge.Drinking water source is worsening, and eutrophic raw water is treated as research hotspot.Eutrophic raw water
It receives significant attention, how to realize to the effective of this water source due to receiving the pollution of the chemical substances such as organic matter, nitrogen, phosphorus
Processing is to ensure the safety of drinking water, it has also become currently associated research field focus of interest, the improvement of eutrophic raw water
It is extremely urgent.Conventional treatment process used in waterworks is bad to the removal effect of pollutant in water now, by this
A little years being continually striving to and exploring, and the treatment technology of eutrophic raw water makes great progress.Improve eutrophic raw water
Treatment technology, not only facilitate improve drinking water security reliability, development level and the people of national economy can also be improved
The living standard of the people.
Based on permanganate index and ammonia nitrogen, water quality has organic matter overall target for the contamination index of eutrophic raw water
Value is higher, ammonia nitrogen concentration is higher, smells the features such as apparent with taste.There are two the main reasons of eutrophic raw water, when：It is natural dirty
Contaminate object, mainly in water animal and plant decompose and formed product；Second is that：The pollutant that mankind's activity generates.Eutrophic water source
The water quality of water is mainly influenced by the industrial wastewater and sanitary sewage that are discharged into, at rivers water source upper table be now ammonia nitrogen, it is coloration, organic
Object equal size is exceeded.The pollution of source water constitutes grave danger, life of many organic pollutions to human body to human health
Health is harmful.Nitrogen and phosphorus content is higher compared with other water bodys in eutrophic raw water, although the presence of nitrogen phosphorus is not unhealthful,
But the presence of nitrogen phosphorus shows that water body has been contaminated, water quality has the tendency that deterioration.Meanwhile it is organic in eutrophic raw water
Object content is higher, this causes the permanganate index in water body higher, and water quality is poor, seriously threatens health, cannot be direct
It is used as Drinking Water water source.
Photochemical catalytic oxidation is a kind of novel water technology, and emphasis of the present invention has developed a kind of former applied to eutrophication
The novel photocatalysis oxidant of water process.Compared with traditional eutrophic raw water processing method, photocatalysis oxidation technique has
Simple for process, oxidative degradation organic matter efficiency is high, and using solar energy, processing cost is low, green environment, and non-secondary pollution etc. is excellent
Point will become one of the important technology of method for treating water.
g-C3N4It is a kind of novel photocatalyst.g-C3N4It is a kind of organic semiconductor of electron rich, g-C3N4Energy gap be
2.7eV, can be as the non-metal optical catalyst of catalytic hydrogen evolution under Uv and visible light and analysis oxygen.g-C3N4Photochemical catalyst is because of it
Unique structure all shows distinctive advantage in catalysis oxidation organic pollution, hydrogen and oxygen production etc..g-C3N4At five kinds
C3N4In be most stable of, but there is presently no find natural g-C3N4, therefore the g-C occurred at present3N4All it is artificial synthesized
's.
Invention content：
The method of modifying of the present invention includes the g-C that will be prepared as raw material using urea3N4It is prepared with by raw material of melamine
G-C3N4By 2:3 ratio is mixed with to obtain new catalyst CN23, by TiO2It carries out load and prepares composite catalyst
TiO2/CN23。TiO2/ CN23 crystal shapes are more regular, are in small spherical shape, and reunion condenses together.The agent structure of the crystal
For g-C3N4, TiO2It is particle studded in g-C3N4Surface.g-C3N4It can play and inhibit TiO2The effect of aggregation, makes TiO2Dispersion
It comes, helps to fully absorb light, improve catalytic efficiency.With g-C3N4It compares, TiO2/ CN23 crystal structure smallers are in particle
Shape can be contacted fully with catalysant matter, enhance catalytic effect.
To achieve the goals above, present invention employs following technical schemes：
1, a kind of TiO2The preparation method of/CN23 photochemical catalysts, which is characterized in that include the following steps：
(1) CN23 crystal is prepared：Weigh the g-C that 1g is prepared using urea as raw material3N4, 1.5g is using melamine as raw material system
Standby g-C3N4, after being ground into powder, it is sufficiently mixed, is respectively washed 4 times with absolute ethyl alcohol and ultra-pure water.After centrifugation, drying,
Yellow powder is obtained, CN23 is named as；
(2)TiO2The preparation of/CN23 photochemical catalysts：Take suitable TiO2First use distilled water eccentric cleaning twice, then with ultrapure
Water eccentric cleaning is primary, and taking precipitate is dried for standby.By TiO2With the CN23 described in step (1) with 10wt%, 20wt%,
The TiO of 30wt%, 40wt%2Mixing, is dissolved separately in 100ml water, forms suspension.It is put into ultrasound 30min in Ultrasound Instrument,
On being transferred to magnetic stirring apparatus, magnetic agitation 6h.Centrifugation, taking precipitate.After drying, be put into chamber type electric resistance furnace with 2.5 DEG C/
Min is from room temperature to 500 DEG C.After reaching 500 DEG C, constant temperature keeps 2h.It takes out after being cooled to room temperature, is once ground, with
It washs, dry afterwards, obtain modified catalyst TiO2/CN23。
2, in the above method, the TiO described in step (1)2The preparation method of/CN23 photochemical catalysts, it will be original with urea to be
Expect the g-C prepared3N4With the g-C prepared as raw material using melamine3N4With 2:3 ratio mixing, prepares CN23.
3, in the above method, step (1) described catalysis material can be applied to processing eutrophic raw water.
Compared with prior art, the invention has the advantages that：
(1) preparation process of the present invention is simple, mild condition, stability are good, of low cost, has high catalytic efficiency, environmental protection
Outstanding advantages of energy saving, nontoxic and pollution-free, meet environmental-friendly requirement, tool has a broad prospect of the use；
(2) TiO prepared by preparation method through the invention2/ CN23 crystal shapes are more regular, are in small spherical shape, group
It condenses together.The agent structure of the crystal is g-C3N4, TiO2It is particle studded in g-C3N4Surface.g-C3N4It can play
Inhibit TiO2The effect of aggregation, makes TiO2It spreads out, helps to fully absorb light, improve catalytic efficiency.With g-C3N4It compares,
TiO2/ CN23 crystal structure smallers, are in granular form, and can fully be contacted with catalysant matter, enhance catalytic effect；
(3)TiO2After load, the performance of catalyst significantly improves.TiO2/ CN23 is to eutrophication water CODMn、NH3-N、
The removal effect of TN, TP and Chl-a are preferable, wherein notable to Chl-a and TP removal effects.It is found that under visible light, TiO2/
CN23 Catalytic processes have potential application effective improvement of eutrophic raw water.
Description of the drawings
Fig. 1 TiO2The scanning electron microscope (SEM) photograph (SEM) of/CN23.
Fig. 2 TiO2/ CN23 handles the treatment effect figure of eutrophic raw water.
Specific implementation mode
The following describes the present invention in detail with reference to examples, so that those skilled in the art more fully understand this hair
It is bright, but the invention is not limited in following embodiments.
Embodiment 1：
Prepare CN23 crystal：Weigh the g-C that 1g is prepared using urea as raw material3N4, 1.5g prepared using melamine as raw material
g-C3N4, after being ground into powder, it is sufficiently mixed, is respectively washed 4 times with absolute ethyl alcohol and ultra-pure water.After centrifugation, drying obtains
Yellow powder is named as CN23.
Embodiment 2：
TiO2The preparation of/CN23 photochemical catalysts：Take suitable TiO2It first uses distilled water eccentric cleaning twice, then uses ultra-pure water
Eccentric cleaning is primary, and taking precipitate is dried for standby.By TiO2With the CN23 described in step (1) with 10wt%, 20wt%,
The TiO of 30wt%, 40wt%2Mixing, is dissolved separately in 100ml water, forms suspension.It is put into ultrasound 30min in Ultrasound Instrument,
On being transferred to magnetic stirring apparatus, magnetic agitation 6h.Centrifugation, taking precipitate.After drying, be put into chamber type electric resistance furnace with 2.5 DEG C/
Min is from room temperature to 500 DEG C.After reaching 500 DEG C, constant temperature keeps 2h.It takes out after being cooled to room temperature, is once ground, with
It washs, dry afterwards, obtain modified catalyst TiO2/CN23。
Embodiment 3：
Photocatalytic activity evaluation：In visible light 30min, the TiO of 20wt%2It is right when/CN23 catalyst amounts are 40mg
Eutrophic raw water CODMn、NH3- N, the removal effect of TN, TP and Chl-a are preferable, wherein aobvious to Chl-a and TP removal effects
It writes, the removal rate of Chl-a is up to 95%.
The embodiment is the preferred embodiments of the present invention, but present invention is not limited to the embodiments described above, not
Away from the present invention substantive content in the case of, those skilled in the art can make it is any it is conspicuously improved, replace
Or modification all belongs to the scope of protection of the present invention.
Claims (3)
1. a kind of TiO2/ CN23 photochemical catalysts and the preparation method and application thereof, which is characterized in that include the following steps：
(1) CN23 crystal is prepared：Weigh the g-C that 1g is prepared using urea as raw material3N4, 1.5g prepared using melamine as raw material
g-C3N4, after being ground into powder, it is sufficiently mixed, is respectively washed 4 times with absolute ethyl alcohol and ultra-pure water.After centrifugation, drying obtains
Yellow powder is named as CN23；
(2)TiO2The preparation of/CN23 photochemical catalysts：Take suitable TiO2First use distilled water eccentric cleaning twice, then with ultra-pure water from
Heart cleaning is primary, and taking precipitate is dried for standby.By TiO2With the CN23 described in step (1) with 10wt%, 20wt%,
The TiO of 30wt%, 40wt%2Mixing, is dissolved separately in 100ml water, forms suspension.It is put into ultrasound 30min in Ultrasound Instrument,
On being transferred to magnetic stirring apparatus, magnetic agitation 6h.Centrifugation, taking precipitate.After drying, be put into chamber type electric resistance furnace with 2.5 DEG C/
Min is from room temperature to 500 DEG C.After reaching 500 DEG C, constant temperature keeps 2h.It takes out after being cooled to room temperature, is once ground, with
It washs, dry afterwards, obtain modified catalyst TiO2/CN23。
2. TiO according to claim 12The preparation method of/CN23 photochemical catalysts, which is characterized in that step (1) is described will
The g-C prepared as raw material using urea3N4With the g-C prepared as raw material using melamine3N4With 2:3 ratio mixing, prepares
CN23。
3. a kind of being prepared TiO according to claim 12The application of/CN23 photochemical catalysts, which is characterized in that the photochemical catalyst
Processing eutrophic raw water can be applied to.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810396967.4A CN108435231A (en) | 2018-04-28 | 2018-04-28 | A kind of TiO2/ CN23 photochemical catalysts and the preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810396967.4A CN108435231A (en) | 2018-04-28 | 2018-04-28 | A kind of TiO2/ CN23 photochemical catalysts and the preparation method and application thereof |
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| CN108435231A true CN108435231A (en) | 2018-08-24 |
Family
ID=63201925
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| CN201810396967.4A Pending CN108435231A (en) | 2018-04-28 | 2018-04-28 | A kind of TiO2/ CN23 photochemical catalysts and the preparation method and application thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109046425A (en) * | 2018-08-13 | 2018-12-21 | 山东交通学院 | Composite photo-catalyst TiO derived from a kind of MOF base2/g-C3N4Preparation method |
| CN110540284A (en) * | 2019-09-06 | 2019-12-06 | 河海大学 | Photocatalytic coupling microorganism water body restoration device and preparation method of sponge carrier |
| CN111604077A (en) * | 2020-05-07 | 2020-09-01 | 太原理工大学 | g-C for degrading ammonia nitrogen3N4/Gr/TiO2Z-system photocatalytic material and preparation method and application thereof |
| CN113181945A (en) * | 2021-04-06 | 2021-07-30 | 太原理工大学 | Preparation method of composite photocatalyst capable of efficiently producing hydrogen peroxide |
| CN113908871A (en) * | 2020-07-09 | 2022-01-11 | 南京工大膜应用技术研究所有限公司 | Preparation method of composite catalytic material for efficiently degrading pesticide wastewater |
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| CN107837817A (en) * | 2017-11-21 | 2018-03-27 | 华中农业大学 | A kind of carbon point/carbonitride/composite titania material and its preparation method and application |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109046425A (en) * | 2018-08-13 | 2018-12-21 | 山东交通学院 | Composite photo-catalyst TiO derived from a kind of MOF base2/g-C3N4Preparation method |
| CN110540284A (en) * | 2019-09-06 | 2019-12-06 | 河海大学 | Photocatalytic coupling microorganism water body restoration device and preparation method of sponge carrier |
| CN110540284B (en) * | 2019-09-06 | 2021-09-07 | 河海大学 | Photocatalytic coupling microorganism water body restoration device and preparation method of sponge carrier |
| CN111604077A (en) * | 2020-05-07 | 2020-09-01 | 太原理工大学 | g-C for degrading ammonia nitrogen3N4/Gr/TiO2Z-system photocatalytic material and preparation method and application thereof |
| CN113908871A (en) * | 2020-07-09 | 2022-01-11 | 南京工大膜应用技术研究所有限公司 | Preparation method of composite catalytic material for efficiently degrading pesticide wastewater |
| CN113181945A (en) * | 2021-04-06 | 2021-07-30 | 太原理工大学 | Preparation method of composite photocatalyst capable of efficiently producing hydrogen peroxide |
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