Preparation method of adsorbing visible light catalytic material used for air pollution management

A catalytic material and air pollution technology, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve the problems of poor adsorption performance, unfavorable promotion, low efficiency, etc., and achieve improved mechanical strength and large specific surface area , good adsorption effect

Inactive Publication Date: 2015-01-28
TONGJI UNIV
View PDF5 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although nano-TiO 2 The application in environmental purification coatings has achieved remarkable and fruitful results, but there are still some problems that are not conducive to practical promotion
(1) Nano-TiO 2 There are certain dependence and limitations on the environment in use, and its utilization rate of ultraviolet light source is extremely high, while the utilization of common visible light sources (such as: sunlight) is insufficient, and the efficiency is very low, but in sunlight, ultraviolet light sou...

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Proportion coal gangue, tourmaline and asphalt powder with a particle size of 200 meshes according to the weight ratio of coal gangue: tourmaline: asphalt powder = 0.8:0.05: 0.15, and fully mix them to obtain material A.

[0022] (2) At room temperature, mix tetra-n-butyl titanate and absolute ethanol at a volume ratio of 1:1, and stir for 0.5 h to obtain a uniform and transparent yellow solution B.

[0023] (3) Mix the material A and the yellow solution B at a mass volume ratio of 1:3, age for 24 hours, heat up to 650°C for carbonization for 6 hours under the condition of carbon dioxide gas with a flow rate of 200mL / min, and cool to room temperature to prepare Get material C.

[0024] (4) Mix material C and sodium tungstate aqueous solution according to the mass volume ratio (w / v) of 10% (the weight ratio of material C and sodium tungstate is 0.95:0.05), ultrasonically oscillate for 4 hours, then wash and dry, nitrogen atmosphere Activation at 400°C for 2 hours, c...

Embodiment 2

[0027] (1) Proportion coal gangue, tourmaline and asphalt powder with a particle size of 200 meshes according to the weight ratio of gangue: tourmaline: asphalt powder = 0.85:0.03: 0.12, and fully mix them to obtain material A.

[0028] (2) At room temperature, mix tetra-n-butyl titanate and absolute ethanol at a volume ratio of 1:1, and stir for 0.5 h to obtain a uniform and transparent yellow solution B.

[0029] (3) Mix material A and yellow solution B at a mass volume ratio of 1:3, age for 12 hours, raise the temperature to 550°C for carbonization for 6 hours under the condition of carbon dioxide gas with a flow rate of 200mL / min, and cool to room temperature to prepare Get material C.

[0030] (4) Fully mix material C and sodium tungstate aqueous solution according to the mass volume ratio (w / v) of 10% (the weight ratio of material C and sodium tungstate is 0.93:0.07), ultrasonically oscillate for 4 hours, then wash and dry, nitrogen atmosphere Activation at 500°C for 2 ...

Embodiment 3

[0033] (1) Proportion coal gangue, tourmaline and asphalt powder with a particle size of 200 meshes according to the weight ratio of coal gangue: tourmaline: asphalt powder = 0.7:0.08: 0.22, and fully mix them to obtain material A.

[0034] (2) At room temperature, mix tetra-n-butyl titanate and absolute ethanol at a volume ratio of 1:1, and stir for 0.5 h to obtain a uniform and transparent yellow solution B.

[0035](3) Mix the material A and the yellow solution B at a mass volume ratio of 1:4, age for 24 hours, heat up to 600°C for carbonization for 8 hours under the condition of carbon dioxide gas with a flow rate of 200mL / min, and cool to room temperature to prepare Get material C.

[0036] (4) Mix material C and sodium tungstate aqueous solution according to the mass volume ratio (w / v) of 10% (the weight ratio of material C and sodium tungstate is 0.95:0.05), ultrasonically oscillate for 4 hours, then wash and dry, nitrogen atmosphere Activation at 500°C for 2 hours, co...

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

No PUM Login to view more

Abstract

The invention relates to a preparation method of an adsorbing visible light catalytic material used for air pollution management. Particularly, coal gangues, asphalt powder and tourmalines are used as raw materials to prepare an active carbon-zeolite compound with perpetual negative charges, and the active carbon-zeolite compound is used as a carrier of a WO3/TiO2 catalyst to be synthesized into the adsorbing visible light catalytic material. In the composite material, the tourmalines naturally carry the perpetual negative charges, and PM2.5 with positive charges in the air can be continuously and efficiently adsorbed; the active carbon-zeolite compound generated by the coal gangues has the super-large specific surface area, and also has the hydrophily of zeolite and the lyophobic property of active carbon, so that the active carbon-zeolite compound has good specific adsorption property on polar pollutants in the air and lyophobic VOCs substances and the like; and the adsorbed pollutants can be degraded and removed by the WO3/TiO2 catalyst under the illumination of sunlight. The product can be used for the technical field of an outer wall coating and keeps self-clean after being washed by rainwater, so that the continuous efficient purification on the pullulated air is realized.

Description

technical field [0001] The invention belongs to the technical field of air pollution control, and in particular relates to a preparation method of an adsorption-visible light catalysis composite functional material used for air control. Background technique [0002] With the rapid development of my country's economy, the acceleration of urbanization and the expansion of industrial scale, regional air pollution is becoming more and more serious. In recent years, smog weather characterized by fine particulate matter has appeared successively in many regions of my country, posing a huge threat to visibility, public health and urban landscape. [0003] Among the existing air pollution control technologies, photocatalytic materials have become one of the effective ways to solve urban air pollution because of their remarkable air purification efficiency. The principle of photocatalytic technology is to use photocatalytic materials to convert solar energy into chemical energy, oxi...

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
IPC IPC(8): B01J20/20B01J23/30B01D49/00B01D53/86B01D53/44
CPCY02P70/10
Inventor 王学江尹大强赵建夫宋靖柯张晶马荣荣夏鹏王鑫黄嘉瑜陈杰
Owner TONGJI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap