Unlock instant, AI-driven research and patent intelligence for your innovation.

An adsorption-photocatalysis dual-functional material, its preparation method and its application in volatile organic gas treatment process

A dual-functional material, photocatalytic technology, applied in gas treatment, chemical instruments and methods, separation methods, etc., can solve problems such as limited adsorption capacity, achieve low energy consumption, high VOCs adsorption capacity selectivity and visible light photocatalytic degradation Efficiency, achieve the effect of semi-continuous deep purification

Active Publication Date: 2020-01-14
SOUTH CHINA UNIV OF TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the key bottleneck problems faced by the current adsorption technology to treat VOCs include: (1) Although the adsorption is a spontaneous process, the adsorption capacity of the adsorbent for VOCs is limited; (2) When the adsorption of VOCs by the adsorbent is close to saturation, it needs to be regeneration, and regeneration is a process that requires external energy
[5 Li Yujie, Miao Jinpeng, Sun Xuejiao, Xiao Jing, Xia Qibin, Xi Hongxia, Li Zhong, Mechanochemical Synthesis of Metal Organic Framework Material HKUST-1 and Its Adsorption Properties of Benzene. 2015, 66, 793-799] However, it has high VOCs adsorption Adsorption-photocatalysis bifunctional metal-organic framework materials with high capacity and high VOCs photocatalytic degradation activity, and VOCs adsorption-photocatalysis coupling treatment process based on such materials have not been reported.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • An adsorption-photocatalysis dual-functional material, its preparation method and its application in volatile organic gas treatment process
  • An adsorption-photocatalysis dual-functional material, its preparation method and its application in volatile organic gas treatment process
  • An adsorption-photocatalysis dual-functional material, its preparation method and its application in volatile organic gas treatment process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Preparation of bifunctional adsorption-photocatalytic metal-organic framework materials

[0033] (1) Dissolve 1.054g of 2-aminoterephthalic acid and 5.16g of iron precursor iron oxide in N,N-dimethylformamide (DMF), add methanol solvent, stir well, and then add 0.26ml of tetrachloromethane titanium dioxide, after continuing to stir evenly, the mixed solution was subjected to a hydrothermal synthesis reaction at 120° C. for 72 hours.

[0034] (2) After washing the product with DMF and methanol in sequence, extract the product by centrifugal filtration, put the product into methanol solution for purification, change the solvent regularly during this period, finally extract the product by centrifugal filtration, and dry it at 150°C to obtain the iron-titanium bimetal Organic framework materials.

[0035] 2. A new process for VOCs treatment based on dual-functional adsorption-photocatalytic metal-organic framework materials

[0036] (1) The air with a formaldehyde cont...

Embodiment 2

[0039] 1. Preparation of bifunctional adsorption-photocatalytic metal-organic framework materials

[0040] (1) Dissolve 1.054g of 2-aminoterephthalic acid and 3.18g of iron element precursor ferric sulfate in N,N-dimethylformamide (DMF), add methanol solvent, stir well, then add 0.52ml of sulfuric acid oxygen Titanium, after continuing to stir evenly, the mixed solution was hydrothermally synthesized at 160° C. for 60 h.

[0041] (2) After washing the product with DMF and methanol in sequence, extract the product by centrifugal filtration, put the product into methanol solution for purification, change the solvent regularly during this period, finally extract the product by centrifugal filtration, and dry it at 120°C to obtain the iron-titanium bimetal Organic framework materials.

[0042] 2. A new process for VOCs treatment based on dual-functional adsorption-photocatalytic metal-organic framework materials

[0043] (1) The air with a toluene content of 200ppm is passed int...

Embodiment 3

[0046] 1. Preparation of bifunctional adsorption-photocatalytic metal-organic framework materials

[0047] (1) Dissolve 1.054g of 2-aminoterephthalic acid and 2.58g of ferric nitrate, the precursor of iron element, in N,N-dimethylformamide (DMF), add methanol solvent, stir well, then add 0.78ml of titanic acid Tetraisopropyl ester, after continuing to stir evenly, the mixture was hydrothermally synthesized at 120°C for 48 hours.

[0048] (2) After washing the product with DMF and methanol in sequence, extract the product by centrifugal filtration, put the product into methanol solution for purification, change the solvent regularly during this period, finally extract the product by centrifugal filtration, and dry it at 100°C to obtain the iron-titanium bimetal Organic framework materials.

[0049] 2. A new process for VOCs treatment based on dual-functional adsorption-photocatalytic metal-organic framework materials

[0050] (1) The air with the isopropanol content of 100ppm...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
crystal sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses an adsorption-photocatalytic dual-functional material, its preparation method and its application in volatile organic gas treatment technology. The preparation method is as follows: dissolve 2-aminoterephthalic acid and iron precursor in N, N-dimethylformamide, add methanol solvent, stir evenly, add titanium precursor, stir, and hydrate the mixture. Thermal synthesis reaction; after the product is washed with DMF and methanol in sequence, the product is extracted by centrifugal filtration, the product is put into a methanol solution for purification, and finally the product is extracted by centrifugal filtration and dried to prepare an adsorption-photocatalytic bifunctional material. The adsorption-photocatalytic dual-functional material of the present invention has high VOCs adsorption capacity selectivity and visible light photocatalytic degradation efficiency. The invented process can realize VOCs adsorption-photocatalytic degradation cycle operation at normal temperature, normal pressure, and visible light radiation. The process is simple and can It has low consumption and can achieve semi-continuous deep purification of waste gas containing VOCs.

Description

technical field [0001] The invention belongs to the field of material preparation, and in particular relates to an adsorption-photocatalysis dual-functional material, a preparation method thereof, and an application in a volatile organic gas treatment process. Background technique [0002] At present, tens of thousands of factories in my country still discharge a large amount of volatile organic compounds (VOCs) into the environment unorganized, which is one of the main sources of air pollution today. VOCs pollution has seriously threatened human health and destroyed the ecological balance of the environment, restricting the sustainable development of society, and has aroused strong dissatisfaction from the public and great concern from the government. Therefore, it is imminent to effectively control the pollution of VOCs. Therefore, the research and development of key materials and technologies for VOCs emission control has great national needs and practical significance. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/30B01J31/22B01D53/86B01D53/72
CPCB01D53/8668B01J20/226B01J31/1691B01J31/2213B01D2255/705B01D2257/708B01D2255/802B01J2531/46B01J2531/842B01J2220/4812B01J2220/4806B01J2220/44B01J35/39Y02A50/20
Inventor 肖静李希翼皮云红李忠夏启斌
Owner SOUTH CHINA UNIV OF TECH