Method for preparing CdS/MIL-53(Fe) visible-light-induced photocatalyst

A catalyst, visible light technology, applied in the field of photocatalytic material preparation

Active Publication Date: 2017-03-22
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] After searching, no patent application or literature report on the method of preparing a new type of CdS / MIL-53(Fe) visible photocatalytic material using cadmium acetate, thioacetamide and MIL-53(Fe) as raw materials and using solvothermal technology was found.

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  • Method for preparing CdS/MIL-53(Fe) visible-light-induced photocatalyst
  • Method for preparing CdS/MIL-53(Fe) visible-light-induced photocatalyst
  • Method for preparing CdS/MIL-53(Fe) visible-light-induced photocatalyst

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Embodiment 1

[0034] The concrete steps of this embodiment are as follows:

[0035] In this embodiment, the preparation method of CdS / MIL-53(Fe) visible light catalyst is to use ferric chloride, terephthalic acid and N,N-dimethylformamide as raw materials, and adopt the solvothermal method Preparation of MIL-53 (Fe) material; then using the obtained MIL-53 (Fe) and cadmium acetate, thioacetamide, polyvinylpyrrolidone and ethylene glycol as raw materials, the solvothermal method was used to prepare CdS / MIL-53 (Fe ) composite material. Its technological process is: weigh the FeCl of 10 mmol 3 ·6H 2 O and 10 mmol of terephthalic acid were dissolved in 50 mL of N,N-dimethylformamide reagent, and stirred continuously at room temperature to fully dissolve ferric chloride and terephthalic acid; the resulting mixture was Move it into a 100 mL reaction kettle, put the reaction kettle in an oven at 150°C, and react for 12 hours; after cooling to room temperature, centrifuge, wash with double disti...

Embodiment 2

[0039] The concrete steps of this embodiment are as follows:

[0040] In this embodiment, the preparation method of CdS / MIL-53(Fe) visible light catalyst is to use ferric chloride, terephthalic acid and N,N-dimethylformamide as raw materials, and adopt the solvothermal method Preparation of MIL-53 (Fe) material; then using the obtained MIL-53 (Fe) and cadmium acetate, thioacetamide, polyvinylpyrrolidone and ethylene glycol as raw materials, the solvothermal method was used to prepare CdS / MIL-53 (Fe ) composite material. Its technological process is: weigh the FeCl of 10 mmol 3 ·6H 2 O and 10 mmol of terephthalic acid were dissolved in 50 mL of N,N-dimethylformamide reagent, and stirred continuously at room temperature to fully dissolve ferric chloride and terephthalic acid; the resulting mixture was Move it into a 100 mL reaction kettle, put the reaction kettle in an oven at 150°C, and react for 12 hours; after cooling to room temperature, centrifuge, wash with double disti...

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Abstract

The invention relates to a method for preparing a novel CdS / MIL-53(Fe) visible-light-induced photocatalyst. The method comprises the following steps: firstly, preparing an MIL-53 (Fe) material from ferric trichloride, terephthalic acid and N,N-dimethyl formamide in a molar ratio of 1:1:65 by adopting a solvothermal method; respectively weighing cadmium acetate, thioacetamide, polyvinylpyrrolidone, ethylene glycol and MIL-53(Fe) with corresponding mass according to the mass ratio of cadmium sulfide to MIL053(Fe) being (1-1.5):1, dispersing MIL-53(Fe) in ethylene glycol, and sufficiently stirring; adding cadmium acetate, and sufficiently stirring until cadmium acetate is completely dissolved; and adding thioacetamide and polyvinylpyrrolidone, and sufficiently stirring until thioacetamide and polyvinylpyrrolidone are completely dissolved, transferring into a reactor to react for 12 hours at 180 DEG C, centrifuging, washing for 5-6 times with redistilled water and absolute ethyl alcohol, and drying for 10 hours at 60 DEG C to finally obtain the CdS / MIL-53(Fe) visible-light-induced photocatalyst. In the CdS / MIL-53(Fe) visible-light-induced photocatalyst, spherical CdS has an average grain size of 10nm and is uniformly distributed on the surface of the MIL-53(Fe) material. The visible-light-induced photocatalyst has excellent catalytic activity, and has a degradation rate for rhodamine B being 71-90 percent.

Description

technical field [0001] The invention relates to a method for preparing a CdS / MIL-53(Fe) visible light catalyst. The material is used for visible light catalytic degradation of organic pollutants such as rhodamine B, and belongs to the technical field of photocatalytic material preparation. Background technique [0002] As a new type of environmentally friendly catalytic technology, photocatalytic technology has attracted increasing attention in the fields of environmental governance, new energy development, and organic synthesis. Especially in environmental governance, photocatalytic degradation technology is gradually becoming the supplement and improvement of traditional pollution control technology. Its biggest advantage is that the degradation reaction is generally carried out at normal temperature and pressure, which can completely decompose organic pollutants in water and air, and mineralize them into CO 2 and H 2 O. In addition, photocatalytic technology uses light...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/26C02F1/30C02F101/30
CPCB01J31/26B01J35/004C02F1/30C02F2101/30C02F2305/10
Inventor 胡龙兴邓桂花张雨瑶
Owner SHANGHAI UNIV
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