CN108201789A - A kind of preparation method of purifying formaldehyde material and application - Google Patents
A kind of preparation method of purifying formaldehyde material and application Download PDFInfo
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- CN108201789A CN108201789A CN201711374852.7A CN201711374852A CN108201789A CN 108201789 A CN108201789 A CN 108201789A CN 201711374852 A CN201711374852 A CN 201711374852A CN 108201789 A CN108201789 A CN 108201789A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
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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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/42—Platinum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/704—Solvents not covered by groups B01D2257/702 - B01D2257/7027
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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Abstract
Preparation method and application the invention discloses a kind of purifying formaldehyde material.This method includes the following steps：The preparation of platinum titanium dioxide composite catalyst；Activated carbon fibre（ACFs）Pretreatment；The preparation of binding agent；Dip-coating method prepares the purifying formaldehyde material of the activated carbon fibre of Supported Pt Nanoparticles titanium dioxide.The present invention passes through NaBH4The method of reduction prepares Pt TiO2Catalyst, while be supported in activated carbon fibre using dip-coating method and Pt TiO are made2/ ACFs purifying formaldehyde materials, the material have the rapidly and efficiently absorption property of ACFs and Pt TiO2Catalytic oxidation performance, when applied to low concentration formaldehyde（＜ 1.0ppm）Can just can be at ambient temperature free of contamination carbon dioxide and water by Formaldehyde decomposition, Formaldehyde decomposition rate is up to 97% during purified treatment.
Description
Technical field
The invention belongs to purifying formaldehyde fields, and in particular to a kind of preparation method of purifying formaldehyde material and application.
Background technology
With the development of national economy and the raising of living standards of the people, people are to inhabitation, the comfort level of working environment, U.S.
The requirement of the property seen etc. is higher and higher.However to give out a large amount of volatile organic compounds tight for indoor building materials and constructional ornamental material
It is degrading indoor air quality again.Wherein, formaldehyde is exactly one of most common volatility organic contamination source, it has thorn to human body
Swash effect and toxic action, be determined as carcinogenic by the World Health Organization and cause deformed material.Formaldehyde Pollution of Indoor Air mainly comes
Lauxite, phenolic resin, melamine resin in indoor building material and ornament etc., and have and slowly release
It puts,
Persistently the characteristics of pollution.Therefore, the formaldehyde gas removed in room air has become Recent study hot spot.
Activated carbon fibre (ACFs) is narrow with pore-size distribution, and large specific surface area, adsorption/desorption speed is fast, and adsorption capacity is big,
The features such as adsorption efficiency is high.But the formaldehyde of ACFs absorption will not decompose, and easily cause secondary pollution, and it is full easily to reach absorption
With will fail after saturation, it is impossible to it is long-term to reuse.In recent years, some researchs are dedicated to TiO2It is supported on ACFs, makes
The standby photochemical catalyst with absorption property, realizes the absorption of formaldehyde and synchronously completing for photocatalysis Decomposition, solves ACFs and easily inhale
The problem of attached saturation and low photochemical catalyst decomposition efficiency.But the research of purifying formaldehyde is not much under room temperature,
Pt-TiO of the present invention2The research for being prepared as decomposing formaldehyde under room temperature of/ACFs purifying formaldehyde materials provides new
Visual angle.
Invention content
In view of the deficiencies of the prior art, the object of the present invention is to provide a kind of preparation method of purifying formaldehyde material with
Using gained purifying formaldehyde material catalysis effect of formaldehyde is good, and preparation process is simple.
A kind of preparation method of purifying formaldehyde material, includes the following steps：
Step 1, the preparation of platinum-titanium dioxide composite catalyst
Titania powder disperses in deionized water, the platinum acid chloride solution of a concentration of 0.077mol/L to be added dropwise to titanium dioxide
In dispersion liquid, after magnetic agitation 60-90min, the NaOH and NaBH that are added dropwise with 2-3 drops/sec of speed4Mixed solution to chlorine platinum
Acid is reduced completely, and dry 12-24h, obtains platinum-titanium dioxide composite catalyst of 0.05-1wt% at 80-100 DEG C, described
NaOH and NaBH4Molar ratio be 5:1；
Step 2, the pretreatment of activated carbon fibre (ACFs)
The regular activated carbon fibre of sheet (ACFs) is placed in pure water and is ultrasonically treated 20-30min, the dry 1- at 80-100 DEG C
Cooled to room temperature is taken out after 2h, it is spare；
Step 3, the preparation of binding agent
The carboxymethyl that a concentration of 0.08-0.8mol/L is obtained in deionized water will be dissolved under the conditions of sodium carboxymethylcellulose magnetic agitation
Sodium cellulosate suspension；
Step 4, dipping-pulling method prepares the purifying formaldehyde material of the activated carbon fibre of Supported Pt Nanoparticles-titanium dioxide
0.1-1g platinum-titanium dioxide composite catalyst is taken to add in carboxymethylcellulose sodium solution, after being ultrasonically treated 20-30min
Add in pretreatment activated carbon fibre, stir 30-60min, recycle Best-Effort request coating machine lifted, by load have platinum-
The activated carbon fibre naturally dry of titanium dioxide, and 2-3h is dried up to Pt-TiO at 100-150 DEG C2/ ACFs purifying formaldehydes
Material.
It is a concentration of 0.5mol/L, NaBH of NaOH in step 1 as improved4A concentration of 0.1mol/L NaOH and
NaBH4Molar ratio be 5：1, drying time 12h.
It is that the size of activated carbon fibre is 5cm × 5cm in step 2 as improved.
It is a concentration of 0.4mol/L of carboxymethylcellulose sodium solution in step 3 as improved.
Be as improved, in step 4 additive amount of platinum-titanium dioxide composite catalyst be 0.5g, the lifting of coating machine
Speed is 1cm/min.
Application of the above-mentioned purifying formaldehyde material on purifying formaldehyde.
It is that above-mentioned purifying formaldehyde material is in the concentration 0.8-3ppm of purifying formaldehyde as improved.
Advantageous effect：
The present invention passes through NaBH4The method of reduction prepares Pt-TiO2Catalyst, while it is supported on activity using dipping-pulling method
Pt-TiO is made on Carbon fibe (ACFs)2/ ACFs purifying formaldehyde materials, the material with ACFs rapidly and efficiently absorption property and
Pt-TiO2Catalytic oxidation performance, can be at ambient temperature with regard to energy when applied to low concentration formaldehyde (＜ 1.0ppm) purified treatment
It is free of contamination carbon dioxide and water by Formaldehyde decomposition, Formaldehyde decomposition rate is up to more than 97%.The present invention efficiently solves individually
It cannot be reused using ACFs and the problem of existing catalyst cannot decompose low concentration formaldehyde under room temperature again.
Description of the drawings
Fig. 1 is the SEM pictures of purifying formaldehyde material prepared by the embodiment of the present invention 1；
Fig. 2 is the Repeatability figure of purifying formaldehyde material prepared by the present invention.
Specific embodiment
The present invention is further described in detail below by specific embodiment.
Embodiment 1
A kind of preparation method of purifying formaldehyde material, includes the following steps：
Step 1, platinum-titanium dioxide (Pt-TiO2) composite catalyst preparation
By 1g TiO2Powder disperses in deionized water, the platinum acid chloride solution of a concentration of 0.077mol/L of 0.67mL to be taken to be added to
In titanium oxide dispersion, after magnetic agitation 60min, with 2-3 drops/sec of speed be added dropwise 0.63mL0.5mol/LNaOH and
0.1mol/LNaBH4Mixed solution, magnetic agitation 30min, by mixed liquor at 80 DEG C dry 12h, obtain the Pt- of 1wt%
TiO2Composite catalyst；
Step 2, the pretreatment of ACFs
The ACFs that size is taken to be 5cm × 5cm, which is put into pure water, is ultrasonically treated 30min, and 100 DEG C of dry 1h in drying box take out
Cooled to room temperature, it is spare；
Step 3, the preparation of binding agent
It weighs 0.1g sodium carboxymethylcelluloses to be dissolved in pure water, is made into the sodium carboxymethylcellulose suspension of 0.4mol/L；
Step 4, dipping-pulling method prepares supporting Pt-TiO2ACFs purifying formaldehyde materials
Take 0.5g Pt-TiO2Composite catalyst is added in sodium carboxymethylcellulose suspension, is ultrasonically treated 30min, is added
The activated carbon fibre pre-processed in step 2 stirs 60min, is then carried out using Best-Effort request coating machine with the speed of 1cm/min
Lifting, has Pt-TiO by load2ACFs naturally dries, and 100 DEG C of dry 3h in drying box, you can.
Embodiment 2
A kind of preparation method of purifying formaldehyde material, includes the following steps：
Step 1, Pt-TiO2The preparation of composite catalyst
By 1g TiO2Powder disperses in deionized water, the platinum acid chloride solution of a concentration of 0.077mol/L of 0.34mL to be taken to be added to
In titanium oxide dispersion, after magnetic agitation 60min, with 2-3 drops/sec of speed be added dropwise 0.63mL0.5mol/LNaOH and
0.1mol/LNaBH4Mixed solution, magnetic agitation 30min, by mixed liquor at 80 DEG C dry 12h, obtain the Pt- of 1wt%
TiO2Composite catalyst；
Step 2, the pretreatment of ACFs
The ACFs that size is taken to be 5cm × 5cm, which is put into pure water, is ultrasonically treated 30min, 100 DEG C of dry 1h in drying box, finally
Cooled to room temperature is taken out, it is spare；
Step 3, the preparation of binding agent
It weighs 0.1g sodium carboxymethylcelluloses to be dissolved in pure water, is made into the sodium cellulose glycolate suspension of 0.4mol/L；
Step 4, dipping-pulling method prepares supporting Pt-TiO2ACFs purifying formaldehyde materials
Take 0.5g Pt-TiO2Composite catalyst is added in sodium carboxymethylcellulose suspension, is ultrasonically treated 30min, is added
The activated carbon fibre pre-processed in step 2 stirs 60min, is then carried out using Best-Effort request coating machine with the speed of 1cm/min
Lifting, has Pt-TiO by load2ACFs naturally dries, and 100 DEG C of dry 3h in drying box, you can.
Embodiment 3
A kind of preparation method of purifying formaldehyde material, includes the following steps：
Step 1, Pt-TiO2The preparation of composite catalyst
By 1g TiO2Powder disperses in deionized water, the platinum acid chloride solution of a concentration of 0.077mol/L of 0.034mL to be taken to be added to
In titanium oxide dispersion, after magnetic agitation 60min, with 2-3 drops/sec of speed be added dropwise 0.63mL0.5mol/LNaOH and
0.1mol/LNaBH4Mixed solution, magnetic agitation 30min, by mixed liquor at 80 DEG C dry 12h, obtain the Pt- of 1wt%
TiO2Composite catalyst；
Step 2, the pretreatment of ACFs
The ACFs that size is taken to be 5cm × 5cm, which is put into pure water, is ultrasonically treated 30min, and 100 DEG C of dry 1h in drying box take out
Cooled to room temperature, it is spare；
Step 3, the preparation of binding agent
It weighs 0.1g sodium carboxymethylcelluloses to be dissolved in pure water, is made into the sodium cellulose glycolate suspension of 0.4mol/L；
Step 4, dipping-pulling method prepares supporting Pt-TiO2ACFs purifying formaldehyde materials
Take 0.5g Pt-TiO2Composite catalyst is added in sodium carboxymethylcellulose suspension, is ultrasonically treated 30min and is added
The ACFs pre-processed in step 2 is stirred 60min, is then lifted using Best-Effort request coating machine with the speed of 1cm/min,
Load there is into Pt-TiO2ACFs naturally dries, be finally putting into 100 DEG C of dry 3h in drying box, you can.
By the purifying formaldehyde material of embodiment 1-3 in low concentration formaldehyde (＜ 1.0ppm) room temperature purified treatment, as a result such as
Shown in following table.
Embodiment 4
Purifying formaldehyde material in embodiment 3 is carried out to repetition room temperature purified treatment, property in low concentration formaldehyde (＜ 1.0ppm)
It can be as shown in Figure 2.It can be seen from the figure that after repeatedly using, the decomposability of material is still very high.
From the results, it was seen that the material has the rapidly and efficiently absorption property and Pt-TiO of ACFs2Catalytic oxidation performance,
Can just can be at ambient temperature free of contamination by Formaldehyde decomposition when applied to low concentration formaldehyde (＜ 1.0ppm) purified treatment
Carbon dioxide and water, Formaldehyde decomposition rate are up to more than 97%.The present invention efficiently solves exclusive use ACFs and cannot reuse
And existing catalyst cannot decompose the problem of low concentration formaldehyde under room temperature again.
In addition, the present invention is not limited to the above embodiment, as long as in without departing from the scope of the present invention, can take various
Mode implements the present invention.
Claims (7)
1. a kind of preparation method of purifying formaldehyde material, which is characterized in that include the following steps：
Step 1, the preparation of platinum-titanium dioxide composite catalyst
Titania powder disperses in deionized water, the platinum acid chloride solution of a concentration of 0.077mol/L to be added dropwise to titanium dioxide
In dispersion liquid, after magnetic agitation 60-90min, the NaOH and NaBH that are added dropwise with 2-3 drops/sec of speed4Mixed solution to chlorine platinum
Acid is reduced completely, dry 12-24h at 80-100 DEG C, obtains platinum-titanium dioxide composite catalyst of 0.05-1wt%, the NaOH
And NaBH4Molar ratio be 5:1；
Step 2, the pretreatment of activated carbon fibre
The regular activated carbon fibre of sheet is placed in pure water and is ultrasonically treated 20-30min, is taken after dry 1-2h at 80-100 DEG C
Go out cooled to room temperature, it is spare；
Step 3, the preparation of binding agent
The carboxymethyl that a concentration of 0.08-0.8mol/L is obtained in deionized water will be dissolved under the conditions of sodium carboxymethylcellulose magnetic agitation
Sodium cellulosate suspension；
Step 4, dipping-pulling method prepares the purifying formaldehyde material of the activated carbon fibre of Supported Pt Nanoparticles-titanium dioxide
0.1-1g platinum-titanium dioxide composite catalyst is taken to add in carboxymethylcellulose sodium solution, after being ultrasonically treated 20-30min
Add in pretreatment activated carbon fibre, stir 30-60min, recycle Best-Effort request coating machine lifted, by load have platinum-
The activated carbon fibre naturally dry of titanium dioxide, and 2-3h is dried up to Pt-TiO at 100-150 DEG C2/ ACFs purifying formaldehydes
Material.
A kind of 2. preparation method of purifying formaldehyde material according to claim 1, which is characterized in that NaOH in step 1
A concentration of 0.5mol/L, NaBH4A concentration of 0.1mol/L NaOH and NaBH4Molar ratio be 5：1, drying time is
12h。
A kind of 3. preparation method of purifying formaldehyde material according to claim 1, which is characterized in that activated carbon in step 2
The size of fiber is 5cm × 5cm.
A kind of 4. preparation method of purifying formaldehyde material according to claim 1, which is characterized in that carboxymethyl in step 3
A concentration of 0.4mol/L of sodium cellulosate solution.
A kind of 5. preparation method of purifying formaldehyde material according to claim 1, which is characterized in that platinum-dioxy in step 4
The additive amount for changing titanium complex catalyst is 0.5g, and the pull rate of coating machine is 1cm/min.
6. based on application of the purifying formaldehyde material on purifying formaldehyde obtained by preparation method described in claim 1.
7. application of the purifying formaldehyde material according to claim 6 on purifying formaldehyde, which is characterized in that purifying formaldehyde
A concentration of 0.8-3ppm.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180028042A (en) * | 2016-09-07 | 2018-03-15 | (주)엘켐텍 | Pt composite particles, a method for manufacturing the same, and an integral regenerative fuel cell comprising the same |
| CN108889318A (en) * | 2018-06-27 | 2018-11-27 | 江苏弗瑞仕环保科技有限公司 | Composite photocatalyst material of Degradation Formaldehyde and preparation method thereof |
| CN108906016A (en) * | 2018-06-27 | 2018-11-30 | 江苏弗瑞仕环保科技有限公司 | A kind of preparation method of porous titanium dioxide photocatalysis material |
| CN108906017A (en) * | 2018-06-27 | 2018-11-30 | 江苏弗瑞仕环保科技有限公司 | The preparation method of catalysis material for air cleaning |
| CN109012659A (en) * | 2018-07-19 | 2018-12-18 | 天津大学 | A kind of preparation method of the monatomic catalyst of activated carbon fibre of the carried noble metal for constant temperature catalyzing degradation VOCs |
| CN109529818A (en) * | 2018-11-27 | 2019-03-29 | 湖北建研科峰工程质量检测有限公司 | The method that reduction method prepares formaldehyde catalysis material |
| CN109575717A (en) * | 2018-12-06 | 2019-04-05 | 章立兰 | It is a kind of can be with efficient-decomposition formaldehyde, the indoor coating of toluene and preparation method thereof |
| CN110665531A (en) * | 2019-10-23 | 2020-01-10 | 江汉大学 | Pt/g-C3N4/CeO2Composite photocatalyst and preparation method and application thereof |
| CN114073934A (en) * | 2020-08-19 | 2022-02-22 | 山东海科创新研究院有限公司 | Activated carbon composite material with adsorption-photodegradation effects and preparation method and application thereof |
| CN114974918A (en) * | 2022-02-16 | 2022-08-30 | 上海应用技术大学 | Composite material of carbon fiber surface loaded with reduced titanium dioxide and preparation and application thereof |
| CN115957749A (en) * | 2023-01-16 | 2023-04-14 | 福州大学 | Platinum-loaded titanium dioxide composite photocatalyst, preparation method thereof and application thereof in degradation of harmful pollutants |
| CN116371394A (en) * | 2022-12-01 | 2023-07-04 | 南宁师范大学 | Catalytic modified formaldehyde purification material and preparation method thereof |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20180028042A (en) * | 2016-09-07 | 2018-03-15 | (주)엘켐텍 | Pt composite particles, a method for manufacturing the same, and an integral regenerative fuel cell comprising the same |
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| CN109529818A (en) * | 2018-11-27 | 2019-03-29 | 湖北建研科峰工程质量检测有限公司 | The method that reduction method prepares formaldehyde catalysis material |
| CN109575717A (en) * | 2018-12-06 | 2019-04-05 | 章立兰 | It is a kind of can be with efficient-decomposition formaldehyde, the indoor coating of toluene and preparation method thereof |
| CN109575717B (en) * | 2018-12-06 | 2020-11-17 | 江苏久诺建材科技股份有限公司 | Indoor coating capable of efficiently decomposing formaldehyde and toluene and preparation method thereof |
| CN110665531A (en) * | 2019-10-23 | 2020-01-10 | 江汉大学 | Pt/g-C3N4/CeO2Composite photocatalyst and preparation method and application thereof |
| CN114073934A (en) * | 2020-08-19 | 2022-02-22 | 山东海科创新研究院有限公司 | Activated carbon composite material with adsorption-photodegradation effects and preparation method and application thereof |
| CN114974918A (en) * | 2022-02-16 | 2022-08-30 | 上海应用技术大学 | Composite material of carbon fiber surface loaded with reduced titanium dioxide and preparation and application thereof |
| CN114974918B (en) * | 2022-02-16 | 2024-04-26 | 上海应用技术大学 | Composite material of carbon fiber surface loaded with reduced titanium dioxide and preparation and application thereof |
| CN116371394A (en) * | 2022-12-01 | 2023-07-04 | 南宁师范大学 | Catalytic modified formaldehyde purification material and preparation method thereof |
| CN115957749A (en) * | 2023-01-16 | 2023-04-14 | 福州大学 | Platinum-loaded titanium dioxide composite photocatalyst, preparation method thereof and application thereof in degradation of harmful pollutants |
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