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Preparation and application of powder catalytic material, nanoribbon catalytic material and composite porous catalytic material

A technology of powder catalytic materials and catalytic materials, applied in catalyst activation/preparation, heterogeneous catalyst chemical elements, special compound water treatment, etc., can solve the problems of low photocatalytic efficiency and low degradation efficiency of organic pollutants

Active Publication Date: 2018-03-16
NANJING UNIVERSTIY SUZHOU HIGH TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the prior art contains rare earth ions Gd 3+ The photocatalytic efficiency of the catalytic material is low, and the degradation efficiency of organic pollutants is low

Method used

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  • Preparation and application of powder catalytic material, nanoribbon catalytic material and composite porous catalytic material
  • Preparation and application of powder catalytic material, nanoribbon catalytic material and composite porous catalytic material

Examples

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preparation example Construction

[0083] The present invention also provides GdSnWSbO 9 -The preparation method of sodium-based montmorillonite composite porous catalytic material, the specific steps are as follows:

[0084] Pretreatment of Na-montmorillonite: 4.8g of L-cystine and 2.4mL of concentrated sulfuric acid were added to 800mL of 80°C distilled water, and then added to the aqueous dispersion containing 20g of Na-montmorillonite, The mixed dispersion was stirred in a water bath at 80°C for 5 hours and then cooled to room temperature, and the obtained product was filtered, washed and dried for later use;

[0085]wxya 9 -Preparation of Na-montmorillonite composites: GdSnWSbO 9 Dissolve the powder in deionized water to obtain a 2 mg / mL solution, and oscillate with ultrasound until a homogeneous solution is formed, and set aside; the sodium-based montmorillonite is 9 : Na-montmorillonite mass ratio of 1:10 was added to the homogeneous solution, stirred in a water bath at 80°C for 5 hours, so that GdSnW...

Embodiment 1

[0107] Using GdSnWSbO 9 Photocatalytic degradation of methyl orange (C 14 h 14 N 3 SO 3 Na).

[0108] GdSnWSbO 9 Put 1.2g of powder into 500mL methyl orange aqueous solution to form a suspension system, the initial concentration of methyl orange aqueous solution is 0.04mmol L -1 , with an initial pH of 7. Select a 500W xenon lamp to irradiate the methyl orange solution with a cut-off filter (λ>420nm). The intensity of incident light is 4.76×10 -6 Einstein L -1 ·s -1 . During the experiment, the catalyst powder was maintained in a suspended state by means of a magnetic stirrer and oxygen aeration. The entire light reaction was carried out in a closed and light-tight environment. GdSnWSbO 9 The powder is a catalyst. Under visible light irradiation, as the irradiation time prolongs, the concentration of methyl orange gradually decreases, and the concentration of total organic carbon (TOC) also gradually decreases. After 315 minutes, the removal rate of methyl orange ...

Embodiment 2

[0114] Using GdSnWSbO 9 Powder degradation of p-chloroaniline (C 6 h 6 ClN)

[0115] GdSnWSbO 9 Put 1.2g of powder into 500mL p-chloroaniline aqueous solution to form a suspension system, the initial concentration of p-chloroaniline aqueous solution is 0.04mmol L -1 , with an initial pH of 7. Select a 500W xenon lamp to irradiate the p-chloroaniline solution with a cut-off filter (λ>420nm). The intensity of incident light is 4.76×10 -6 Einstein L -1 ·s -1 . During the experiment, the catalyst powder was maintained in a suspended state by means of a magnetic stirrer and oxygen aeration. The entire light reaction was carried out in a closed and light-tight environment. GdSnWSbO 9 The powder is a catalyst, and under visible light irradiation, as the irradiation time prolongs, the concentration of p-chloroaniline decreases gradually, and the concentration of total organic carbon (TOC) also gradually decreases. After 325 minutes, the removal rate of p-chloroaniline is 10...

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Abstract

The invention discloses a powder catalyst, composed of GdSnWSbO9 and having a particle size of 0.15-0.30 mu m. The powder catalyst is capable of optically catalytically degrading organic pollutants inwater, such as p-chloroaniline, methyl orange and decabromodiphenyl ether. Also disclosed is a preparation method of the powder catalyst, comprising high-temperature solid sintering process, direct deposition process and chemical vapor condensation deposition process. The invention also discloses a preparation method of a composite nano catalytic material; GdSnWSbO9-Na-montmorillonite composite nano catalytic material prepared by the using the preparation method is applicable to removing the organic pollutants in water, such as p-chloroaniline, methyl orange and decabromodiphenyl ether, by photocatalysis.

Description

technical field [0001] The present invention relates to the technical field of catalytic materials, more specifically to a GdSnWSdO-based 9 Preparation and application of powder catalytic materials, nanobelt catalytic materials, and composite porous catalytic materials. Background technique [0002] Environmental deterioration and energy crisis have become two major problems facing society today. While trying to reduce environmental pollution, it is of great strategic significance to develop and utilize clean and pollution-free new energy and maximize the use of solar energy for sustainable development. Nowadays, the semiconductor photocatalysis technology under development can effectively utilize solar energy, realize the chemical conversion and storage of solar energy, and show superior performance in solving environmental pollution and energy crisis. [0003] As we all know, ultraviolet rays only account for 4% of the solar spectrum, while visible light occupies about 43...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/30B01J35/06B01J37/08B01J37/03B01J37/34C02F1/30C02F1/72C02F101/30C02F101/34C02F101/36C02F101/38
CPCC02F1/30C02F1/722C02F1/725B01J23/002B01J23/30B01J37/031B01J37/08B01J37/342C02F2305/10C02F2305/023C02F2101/38C02F2101/40C02F2101/36C02F2101/34C02F2101/30B01J2523/00B01J35/58B01J35/23B01J35/39B01J2523/375B01J2523/43B01J2523/53B01J2523/69
Inventor 栾景飞沈栎
Owner NANJING UNIVERSTIY SUZHOU HIGH TECH INST
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