Preparation method of cerium-doped NH2-UiO-66/indium zinc sulfide composite visible-light-induced photocatalysts

An nh2-uio-66, indium zinc sulfide technology, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of low hydrothermal stability, Limit the application and other problems, to achieve the effect of improving the photocatalytic degradation activity, high reproducibility, mild and controllable preparation conditions

Inactive Publication Date: 2019-08-16
CHANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most MOFs have problems such as low hydrothermal stability, which limits their application in the field of photocatalysis, while UiO-66 has greatly enhanced hydrothermal stability due to its high coordination number.

Method used

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  • Preparation method of cerium-doped NH2-UiO-66/indium zinc sulfide composite visible-light-induced photocatalysts
  • Preparation method of cerium-doped NH2-UiO-66/indium zinc sulfide composite visible-light-induced photocatalysts
  • Preparation method of cerium-doped NH2-UiO-66/indium zinc sulfide composite visible-light-induced photocatalysts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Ce (Ⅳ) 0.1 Preparation of -NU66: Dissolve 0.2332 g of zirconium chloride, 0.4932 g of cerium ammonium nitrate and 0.1812 g of 2-aminoterephthalic acid in 50 mL of N,N-dimethylformamide. Transfer to a polytetrafluoroethylene liner, 120 °C hydrothermal reaction for 24 h, after the hydrothermal kettle is cooled to room temperature, the product is centrifugally washed with N,N-dimethylformamide and anhydrous methanol , to get Ce(Ⅳ) 0.1 -NU66.

[0022] (2) Ce (Ⅳ) 0.1 - Preparation of NU66 / ZIS composite visible light catalyst: Dissolve 0.137 g zinc chloride and 0.588 g indium trichloride in water, add 0.301 g thioacetamide, stir magnetically to obtain indium zinc sulfide precursor solution, add 0.0301 g Ce (Ⅳ ) 0.1 -NU66 powder, after ultrasonication for a period of time, transfer the suspension to 100 mL polytetrafluoroethylene lining, 120 °C hydrothermal reaction for 24 h, after the hydrothermal kettle is cooled to room temperature, use water and ethanol as detergen...

Embodiment 2

[0024] (1) Ce (Ⅲ) 0.1 Preparation of -NU66: Dissolve 0.2332 g of zirconium chloride, 0.0434 g of cerium (Ⅲ) nitrate and 0.1812 g of 2-aminoterephthalic acid in 50 mL of N,N-dimethylformamide. The solution was transferred to a 100mL polytetrafluoroethylene liner, and subjected to hydrothermal reaction at 120 °C for 24 h. After the hydrothermal kettle was cooled to room temperature, N,N-dimethylformamide, anhydrous methanol and acetone were used as detergents in sequence. , the product was centrifuged and washed to give Ce(Ⅲ) 0.1 -NU66

[0025] (2) Ce(Ⅲ) 0.1 - Preparation of NU66 / ZIS composite visible light catalyst: Dissolve 0.137 g of zinc chloride and 0.588 g of indium trichloride in water, add 0.301 g of thioacetamide, stir magnetically to obtain an indium zinc sulfide precursor, add 0.0301 g of Ce (Ⅲ ) 0.1 -NU66 powder, after ultrasonication for a period of time, transfer the suspension to 100 mL polytetrafluoroethylene lining, 120 °C hydrothermal reaction for 24 h, aft...

Embodiment 3

[0027] (1) Ce (Ⅳ) 0.2 Preparation of -NU66: Dissolve 0.2332 g of zirconium chloride, 0.0110 g of cerium ammonium nitrate and 0.1812 g of 2-aminoterephthalic acid in 50 mL of N,N-dimethylformamide. Transfer to a polytetrafluoroethylene liner, 120 °C hydrothermal reaction for 24 h, after the hydrothermal kettle is cooled to room temperature, the product is centrifugally washed with N,N-dimethylformamide and anhydrous methanol , to get Ce(Ⅳ) 0.2 -NU66.

[0028] (2) Ce (Ⅳ) 0.2 - Preparation of NU66 / ZIS composite visible light catalyst: Dissolve 0.137 g zinc chloride and 0.588 g indium trichloride in water, add 0.301 g thioacetamide, stir magnetically to obtain indium zinc sulfide precursor solution, add 0.0301 g Ce (Ⅳ ) 0.2 -NU66 powder, after ultrasonication for a period of time, transfer the suspension to 100 mL polytetrafluoroethylene lining, 120 °C hydrothermal reaction for 24 h, after the hydrothermal kettle is cooled to room temperature, use water and ethanol as detergen...

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Abstract

The invention relates to a preparation method of cerium-doped NH2-UiO-66/indium zinc sulfide composite visible-light-induced photocatalysts. The preparation method comprises the following steps: preparing cerium-doped NH2-UiO-66 by adopting a solvothermal method, then carrying out a hydrothermal reaction by using an in-situ growth method to separately obtain a cerium (IV)-doped NH2-UiO-66/indium zinc sulfide composite visible-light-induced photocatalyst and a cerium (III)-doped NH2-UiO-66/indium zinc sulfide composite visible-light-induced photocatalyst. The preparation method has the beneficial effects that cost is low, repeatability is high, and the preparation conditions are mild and controllable. The prepared cerium-doped NH2-UiO-66/indium zinc sulfide composite visible-light-induced photocatalysts are green environment-friendly photocatalysts, and the cerium-doped NH2-UiO-66 is compounded with indium zinc sulfide, so that photocatalytic degradation activity can be effectively improved, and therefore, the preparation method has a certain application prospect in the field of water pollution treatment.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic nanomaterials and relates to cerium-doped NH 2 - Preparation method of UiO-66 / indium zinc sulfide composite visible light catalyst. Background technique [0002] Nowadays, the problem of water pollution has been widely concerned by everyone, and the use of solar energy to purify water resources is considered to be one of the most energy-saving and environmentally friendly technologies. So far, experts and scholars have conducted research on various photocatalysts that can be used to degrade sewage dyes. Among all the reported photocatalysts, InZnS is cheap and readily available, and has a suitable bandgap (2.34–2.48 eV) corresponding to visible light absorption. Previous studies have found that indium zinc sulfide has visible light-driven degradation activity and shows high chemical stability. However, the poor separation efficiency and low mobility of photogenerated carriers restrict th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/26B01J35/08C02F1/30C02F101/30
CPCB01J31/26B01J35/004B01J35/08B01J2531/0213B01J2531/38B01J2531/48C02F1/30C02F2101/308C02F2305/10
Inventor 李忠玉赵彩霞姜海伦
Owner CHANGZHOU UNIV
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