CN110252415A - For eliminating the preparation method of the amino functional MOFs of indoor formaldehyde - Google Patents

For eliminating the preparation method of the amino functional MOFs of indoor formaldehyde Download PDF

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Publication number
CN110252415A
CN110252415A CN201910626203.4A CN201910626203A CN110252415A CN 110252415 A CN110252415 A CN 110252415A CN 201910626203 A CN201910626203 A CN 201910626203A CN 110252415 A CN110252415 A CN 110252415A
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China
Prior art keywords
lafeo3
indoor formaldehyde
preparation
uio
eliminating
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CN201910626203.4A
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Inventor
李帅
陈晓娟
陈杰明
利东
刘丽
范宇涵
刘显华
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Foshan University
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Foshan University
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/8668Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/16Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
    • B01J31/22Organic complexes
    • B01J31/2204Organic complexes the ligands containing oxygen or sulfur as complexing atoms
    • B01J31/2208Oxygen, e.g. acetylacetonates
    • B01J31/2226Anionic ligands, i.e. the overall ligand carries at least one formal negative charge
    • B01J31/223At least two oxygen atoms present in one at least bidentate or bridging ligand
    • B01J31/2239Bridging ligands, e.g. OAc in Cr2(OAc)4, Pt4(OAc)8 or dicarboxylate ligands
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/26Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
    • B01J31/28Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24 of the platinum group metals, iron group metals or copper
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/30Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • B01J35/39Photocatalytic properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2531/00Additional information regarding catalytic systems classified in B01J31/00
    • B01J2531/40Complexes comprising metals of Group IV (IVA or IVB) as the central metal
    • B01J2531/48Zirconium

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Catalysts (AREA)

Abstract

The invention discloses the preparation methods of the amino functional MOFs for eliminating indoor formaldehyde, are related to indoor formaldehyde processing technology field.The present invention is dissolved in deionized water the following steps are included: the ferric nitrate and lanthanum nitrate that SS01 taking-up molar ratio is 1:1, prepares LaFeO3 by hydrothermal synthesis method;SS02 is modified by surface of the thioacetic acid to the LaFeO3 in SS01;Material after SS03 modifies SS02 is sequentially placed into the N of ZrCl4 and 2- amino terephthalic acid (TPA), in dinethylformamide solution, the self assembly that the surface LaFeO3 UIO-66-NH2 is realized in 100-200 DEG C of reaction kettle, to construct out LaFeO3/UIO-66-NH2 composite photo-catalyst.The present invention is strong by the Technology design visible light absorption capacity that hydrothermal synthesis method and self-assembly method combine, and the metal organic framework LaFeO3/UIO-66-NH2 composite photo-catalyst with high catalytic activity, indoor formaldehyde can be effectively eliminated, it is insufficient to solve the problems, such as that existing photochemical catalyst eliminates effect of formaldehyde.

Description

For eliminating the preparation method of the amino functional MOFs of indoor formaldehyde
Technical field
The invention belongs to indoor formaldehyde processing technology fields, more particularly to the amino functional for eliminating indoor formaldehyde The preparation method of MOFs.
Background technique
Photochemical catalyst is the key that determine light-catalyzed reaction efficiency, has developed TiO2, g-C3N4, Ag3PO4, CdS at present With a variety of photochemical catalysts such as metal organic framework (MOFs), wherein metal organic framework (MOFs) is by rigid organic ligand and gold Belong to the novel porous materials with infinite network structure that ion or metal cluster are formed by coordinate bond bridging.
Since the raw material of metal organic framework (MOFs) are simple and easy to get, there is high porosity, high-specific surface area, pattern ruler Very little adjustable, structure-rich, synthetic strategy are simply and various, and can need the advantages that making various chemical modifications according to experiment, MOFs is widely used in the fields such as gas absorption and storage, catalysis, photoelectricity, material, sensing and medical diagnosis.
The rise of interior decoration and it is universal bring air pollution problem inside rooms very serious, formaldehyde is in room air Main pollutant, in numerous methods of purifying formaldehyde, photocatalysis technology is that most probable realizes a kind of technology promoted and applied, And had the air purifier based on photocatalysis technology currently on the market, but it is undesirable there are clean-up effect the problems such as, light Catalyst is the key that determine photocatalytic activity, therefore the MOFs for designing the efficiently amino functional of elimination indoor formaldehyde is this Field personnel's problem to be solved.
Summary of the invention
The purpose of the present invention is to provide the preparation methods of the amino functional MOFs for eliminating indoor formaldehyde, pass through water The Technology design visible light absorption capacity that thermal synthesis method and self-assembly method combine is strong, and the metal with high catalytic activity is organic It is insufficient to solve the problems, such as that existing photochemical catalyst eliminates effect of formaldehyde for skeleton LaFeO3/UIO-66-NH2 composite photo-catalyst.
In order to solve the above technical problems, the present invention is achieved by the following technical solutions:
The present invention is the preparation method for eliminating the amino functional MOFs of indoor formaldehyde, comprising the following steps:
The preparation of SS01LaFeO3: the ferric nitrate and lanthanum nitrate that molar ratio is 1:1 are taken out, is dissolved in deionized water, will mix It closes in solution merging hydrothermal reaction kettle and carries out hydro-thermal reaction, cool down and take out after hydro-thermal and isolate sediment, obtain LaFeO3;
SS02 modification: it is modified by surface of the thioacetic acid to the LaFeO3 obtained in SS01;
SS03 constructs composite photo-catalyst: the material after SS02 is modified is sequentially placed into ZrCl4 and 2- amino terephthaldehyde In the n,N-Dimethylformamide solution of acid, oneself of the surface LaFeO3 UIO-66-NH2 is realized in 100-200 DEG C of reaction kettle Assembling, to construct out LaFeO3/UIO-66-NH2 composite photo-catalyst.
Further, temperature setting is at 150 DEG C in hydrothermal reaction kettle in the SS01, reaction time 12h.
Further, temperature setting is at 200 DEG C in hydrothermal reaction kettle in the SS01, reaction time 12h.
Further, after reaction kettle is cooled to room temperature in the SS01, by centrifuge and with deionized water and anhydrous second Alcohol alternately washing 3 times, after sufficiently cleaning 60 DEG C at a temperature of it is dry, it is dry after grinding obtain LaFeO3 material.
Further, using in conjunction with X-ray diffraction (XRD), FTIR spectrum analyzer (FT-IR) after the SS03 Structure, ingredient, pattern and light is carried out to LaFeO3/UIO-66-NH2 composite photo-catalyst with scanning electron microscope (SEM) to inhale Receive the characterization that performance carries out physico-chemical property.
The invention has the following advantages:
The present invention is strong by the Technology design visible light absorption capacity that hydrothermal synthesis method and self-assembly method combine, and has The metal organic framework LaFeO3/UIO-66-NH2 composite photo-catalyst of high catalytic activity, on the one hand, by UIO-66-NH2 material Expect that preferable pore property improves the diffusion of contaminant molecule and the absorption on composite catalyst surface in reaction system, from And it is conducive to the progress of light-catalyzed reaction, and on the other hand, band structure between LaFeO3 and UIO-66-NH2 in composite photo-catalyst The matching of feature makes composite material exhibits go out stronger light absorpting ability, photocatalytic activity and structural stability, can be effective Indoor formaldehyde is eliminated, to realize that the green of crowd is lived.
Certainly, it implements any of the products of the present invention and does not necessarily require achieving all the advantages described above at the same time.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common Technical staff's all other embodiment obtained without creative efforts belongs to the model that the present invention protects It encloses.
Embodiment one
The present invention is the preparation method for eliminating the amino functional MOFs of indoor formaldehyde, comprising the following steps:
The preparation of SS01LaFeO3: the ferric nitrate and lanthanum nitrate that molar ratio is 1:1 are taken out, is dissolved in deionized water, will mix It closes in solution merging hydrothermal reaction kettle and carries out hydro-thermal reaction, cool down and take out after hydro-thermal and isolate sediment, obtain LaFeO3;
SS02 modification: it is modified by surface of the thioacetic acid to the LaFeO3 obtained in SS01;
SS03 constructs composite photo-catalyst: the material after SS02 is modified is sequentially placed into ZrCl4 and 2- amino terephthaldehyde In the n,N-Dimethylformamide solution of acid, oneself of the surface LaFeO3 UIO-66-NH2 is realized in 100-200 DEG C of reaction kettle Assembling, to construct out LaFeO3/UIO-66-NH2 composite photo-catalyst.
Wherein, temperature setting is at 150 DEG C in hydrothermal reaction kettle in the SS01, reaction time 12h.
Wherein, it after reaction kettle is cooled to room temperature in the SS01, is handed over by centrifuge and with deionized water and dehydrated alcohol For washing 3 times, after sufficiently cleaning 60 DEG C at a temperature of it is dry, it is dry after grinding obtain LaFeO3 material.
Wherein, it uses in conjunction with X-ray diffraction (XRD), FTIR spectrum analyzer (FT-IR) and sweeps after the SS03 It retouches electron microscope (SEM) and structure, ingredient, pattern and light absorption is carried out to LaFeO3/UIO-66-NH2 composite photo-catalyst It can be carried out the characterization of physico-chemical property.
Embodiment two
The present invention is the preparation method for eliminating the amino functional MOFs of indoor formaldehyde, comprising the following steps:
The preparation of SS01LaFeO3: the ferric nitrate and lanthanum nitrate that molar ratio is 1:1 are taken out, is dissolved in deionized water, will mix It closes in solution merging hydrothermal reaction kettle and carries out hydro-thermal reaction, cool down and take out after hydro-thermal and isolate sediment, obtain LaFeO3;
SS02 modification: it is modified by surface of the thioacetic acid to the LaFeO3 obtained in SS01;
SS03 constructs composite photo-catalyst: the material after SS02 is modified is sequentially placed into ZrCl4 and 2- amino terephthaldehyde In the n,N-Dimethylformamide solution of acid, oneself of the surface LaFeO3 UIO-66-NH2 is realized in 100-200 DEG C of reaction kettle Assembling, to construct out LaFeO3/UIO-66-NH2 composite photo-catalyst.
Wherein, temperature setting is at 200 DEG C in hydrothermal reaction kettle in the SS01, reaction time 12h.
Wherein, it after reaction kettle is cooled to room temperature in the SS01, is handed over by centrifuge and with deionized water and dehydrated alcohol For washing 3 times, after sufficiently cleaning 60 DEG C at a temperature of it is dry, it is dry after grinding obtain LaFeO3 material.
Wherein, it uses in conjunction with X-ray diffraction (XRD), FTIR spectrum analyzer (FT-IR) and sweeps after the SS03 It retouches electron microscope (SEM) and structure, ingredient, pattern and light absorption is carried out to LaFeO3/UIO-66-NH2 composite photo-catalyst It can be carried out the characterization of physico-chemical property.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one implementation of the invention In example or example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example. Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples to close Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification, It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only It is limited by claims and its full scope and equivalent.

Claims (5)

1. the preparation method for the amino functional MOFs for eliminating indoor formaldehyde, it is characterised in that: the following steps are included:
The preparation of SS01 LaFeO3: the ferric nitrate and lanthanum nitrate that molar ratio is 1:1 are taken out, is dissolved in deionized water, will mix molten Hydro-thermal reaction is carried out in liquid merging hydrothermal reaction kettle, cools down and takes out after hydro-thermal and isolate sediment, obtain LaFeO3;
SS02 modification: it is modified by surface of the thioacetic acid to the LaFeO3 obtained in SS01;
SS03 constructs composite photo-catalyst: the material after SS02 is modified is sequentially placed into ZrCl4 and 2- amino terephthalic acid (TPA) In n,N-Dimethylformamide solution, the self assembly of the surface LaFeO3 UIO-66-NH2 is realized in 100-200 DEG C of reaction kettle, To construct out LaFeO3/UIO-66-NH2 composite photo-catalyst.
2. according to claim 1 for eliminating the preparation method of the amino functional MOFs of indoor formaldehyde, feature exists In temperature setting is at 150 DEG C in hydrothermal reaction kettle in the SS01, reaction time 12h.
3. according to claim 1 for eliminating the preparation method of the amino functional MOFs of indoor formaldehyde, feature exists In temperature setting is at 200 DEG C in hydrothermal reaction kettle in the SS01, reaction time 12h.
4. according to claim 1 for eliminating the preparation method of the amino functional MOFs of indoor formaldehyde, feature exists In, after reaction kettle is cooled to room temperature in the SS01, alternately washed 3 times by centrifuge and with deionized water and dehydrated alcohol, After sufficiently cleaning 60 DEG C at a temperature of it is dry, it is dry after grinding obtain LaFeO3 material.
5. according to claim 1 for eliminating the preparation method of the amino functional MOFs of indoor formaldehyde, feature exists In using in conjunction with X-ray diffraction (XRD), FTIR spectrum analyzer (FT-IR) and scanning electron microscopy after the SS03 Mirror (SEM), which carries out structure, ingredient, pattern and light absorption to LaFeO3/UIO-66-NH2 composite photo-catalyst, can be carried out materialization The characterization of property.
CN201910626203.4A 2019-07-11 2019-07-11 For eliminating the preparation method of the amino functional MOFs of indoor formaldehyde Pending CN110252415A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113769714A (en) * 2021-09-28 2021-12-10 西南大学 UIO-66-X-loaded glass fiber composite, preparation method and application
WO2024077411A1 (en) * 2022-10-09 2024-04-18 苏州大学 Bismuth titanate nanosheet/uio-66-nh2 heterojunction containing bismuth vacancies, preparation method therefor and use thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106140177A (en) * 2015-03-16 2016-11-23 中智环保新材料江苏有限公司 A kind of superstructure visible light responsive BiFeO3the preparation method and application of photocatalyst
CN107042087A (en) * 2017-01-19 2017-08-15 中国石油大学(华东) A kind of method that Situ Hydrothermal prepares magnetic metal organic framework core-shell material
CN107626319A (en) * 2017-10-09 2018-01-26 河南师范大学 A kind of preparation method of flower-shaped cadmium ferrite photochemical catalyst
KR20180043061A (en) * 2016-10-19 2018-04-27 한국에너지기술연구원 Self-assembled 3D hybrid structure, method for preparing the same, and photocatalysts using the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106140177A (en) * 2015-03-16 2016-11-23 中智环保新材料江苏有限公司 A kind of superstructure visible light responsive BiFeO3the preparation method and application of photocatalyst
KR20180043061A (en) * 2016-10-19 2018-04-27 한국에너지기술연구원 Self-assembled 3D hybrid structure, method for preparing the same, and photocatalysts using the same
CN107042087A (en) * 2017-01-19 2017-08-15 中国石油大学(华东) A kind of method that Situ Hydrothermal prepares magnetic metal organic framework core-shell material
CN107626319A (en) * 2017-10-09 2018-01-26 河南师范大学 A kind of preparation method of flower-shaped cadmium ferrite photochemical catalyst

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CAM LOC LUU ET AL.: "Thin film nano-photocatalyts with low band gap energy for gas phase degradation of p-xylene: TiO2 doped Cr, UiO66-NH2 and LaBO3 (B = Fe, Mn, and Co)", 《ADVANCES IN NATURAL SCIENCE: NANOSCIENCE AND NANOTECHNOLOGY》 *
YUNHUI SI ET AL.: "Photocatalytic Performance of a Novel MOF/BiFeO3 Composite", 《MATERIALS》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113769714A (en) * 2021-09-28 2021-12-10 西南大学 UIO-66-X-loaded glass fiber composite, preparation method and application
CN113769714B (en) * 2021-09-28 2022-11-29 西南大学 UIO-66-X-loaded glass fiber composite, preparation method and application
WO2024077411A1 (en) * 2022-10-09 2024-04-18 苏州大学 Bismuth titanate nanosheet/uio-66-nh2 heterojunction containing bismuth vacancies, preparation method therefor and use thereof

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