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Zinc sulfide-benzoic acid nano composite photocatalytic material and preparation method thereof

A technology of nanocomposite materials and photocatalytic materials, which is applied in the field of zinc sulfide and benzoic acid nanocomposite photocatalytic materials and its preparation, can solve the problems of increasing cost and complexity, and achieve improved photocatalytic efficiency, simple preparation process, and production easy effect

Inactive Publication Date: 2013-07-10
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in order to control the dispersion of zinc sulfide nanoparticles in nanocomposites, it is necessary to add mercaptoethanol to coat and stabilize the zinc sulfide particles; in order to reduce the water absorption of nanocomposites and enhance other physical properties of the materials, during the reaction process It is necessary to add hydrophobic polymerized monomers such as styrene (St) and divinylbenzene (DVB); in addition, the preparation process must be combined with γ-ray irradiation polymerization, which increases the cost and complexity of the preparation

Method used

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  • Zinc sulfide-benzoic acid nano composite photocatalytic material and preparation method thereof
  • Zinc sulfide-benzoic acid nano composite photocatalytic material and preparation method thereof
  • Zinc sulfide-benzoic acid nano composite photocatalytic material and preparation method thereof

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Embodiment 1

[0030] 1) Weigh 11.90g Zn(NO 3 ) 2 ·6H 2 O and 5.76 g of sodium benzoate were dissolved in 100 mL at room temperature to remove CO 2 Prepare the salt solution with water, pour the prepared two salt solutions into a four-neck flask, and start to rotate at a constant speed with an electric stirrer to mix the salt solution evenly;

[0031] 2) Weigh 2g NaOH and dissolve in 100mL to remove CO 2 Prepare lye in water, slowly add lye to the mixed salt solution, and white precipitates will appear in the solution, adjust the pH of the solution to 6, raise the temperature to 90°C, and react at this temperature for 24 hours. After the reaction, The precipitate was taken out, centrifuged and used to remove CO 2 After washing with water for 4 times, the product was dried at 50° C. for 6 hours to obtain a one-dimensional benzoate intercalated layered zinc hydroxide nanofiber precursor;

[0032] 3) Place the benzoate-intercalated layered zinc hydroxide nanofiber precursor prepared in step ...

Embodiment 2

[0041] 1) Weigh 11.90g Zn(NO 3 ) 2 ·6H 2 O and 5.76 g of sodium benzoate were dissolved in 100 mL at room temperature to remove CO 2 Prepare a salt solution in the water, pour the prepared two salt solutions into a four-necked flask, and start to rotate at a constant speed with an electric stirrer to mix the salt solution evenly;

[0042] 2) Weigh 2g NaOH and dissolve in 100mL to remove CO 2 Prepare lye in water, slowly add lye to the mixed salt solution, and white precipitates will appear in the solution, adjust the pH of the solution to 7, raise the temperature to 90°C, and react at this temperature for 24 hours. After the reaction, The precipitate was taken out, centrifuged and used to remove CO 2 Washing with water for 3 times, drying the product at 50°C for 6 hours to obtain a two-dimensional benzoate intercalated layered zinc hydroxide nanosheet precursor;

[0043] 3) Place the benzoate-intercalated layered zinc hydroxide nanosheet precursor prepared in step 2) in t...

Embodiment 3

[0047] 1) Weigh 5.95g Zn(NO 3 ) 2 ·6H 2 O and 5.76 g of sodium benzoate were dissolved in 100 mL at room temperature to remove CO 2 Prepare a salt solution in water, pour the prepared two salt solutions into a four-neck flask, and start to use an electric stirrer to rotate at a constant speed to mix the salt solution evenly;

[0048] 2) Weigh 0.6g NaOH and dissolve in 100mL to remove CO 2 Prepare lye in water, slowly add lye to the mixed salt solution, and white precipitates will appear in the solution, adjust the pH of the solution to 6, raise the temperature to 100°C, and react at this temperature for 18 hours. The precipitate was taken out, centrifuged and used to remove CO 2 After washing with water for 4 times, the product was dried at 50° C. for 6 hours to obtain a one-dimensional benzoate intercalated layered zinc hydroxide nanofiber precursor;

[0049] 3) Place the benzoate-intercalated layered zinc hydroxide nanofiber precursor prepared in step 2) in the reaction...

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Abstract

The invention belongs to the technical field of semiconductor nano composite materials and specifically relates to a zinc sulfide-benzoic acid nano composite photocatalytic material and a preparation method thereof. The zinc sulfide-benzoic acid nano composite photocatalytic material is obtained by taking zinc salt and a benzoate as raw materials, obtaining a benzoate intercalated layered zinc hydroxide nano composite material in a water phase solution through the coordination of zinc ions and benzoate carboxyl functional group and then reacting the benzoate intercalated layered zinc hydroxide nano composite material with H2S gas. Compared with the prior art, the zinc sulfide-benzoic acid nano composite photocatalytic material provided by the invention realizes even dispersion of zinc sulfide nano-particles of quantum size in benzoic acid array, and is capable of effectively inhibiting compounding of electrons with holes and improving the photocatalytic efficiency of zinc sulfide nano-particles; besides, the method is simple in preparation process, rich in raw material source and easy to expand in production.

Description

technical field [0001] The invention belongs to the technical field of semiconductor nanocomposite materials, in particular to a zinc sulfide and benzoic acid nanocomposite photocatalytic material and a preparation method thereof. Background technique [0002] Zinc sulfide is a very important semiconductor material. This material has excellent physical and chemical properties and has a wide range of applications in the fields of photocatalysis, sensors, and optoelectronic devices. The combination of zinc sulfide and organic matter at the nanoscale is helpful to improve the photoelectric performance of zinc sulfide semiconductor materials and expand its application fields. Therefore, zinc sulfide / organic nanocomposites have become a research hotspot in nanoscience and material science in recent years. [0003] At present, there are many reports on ZnS / organic nanocomposites. Yu et al. (W.T.Yao, S.H.Yu, L.Pan, J.Li, Q.S.Wu, L.Zhang, J.Jiang, Small, 2005, 1, 320-325) used solv...

Claims

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Application Information

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IPC IPC(8): B01J31/26C02F1/30
Inventor 王连英岳爽杨双霞郭晓迪何静
Owner BEIJING UNIV OF CHEM TECH
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