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Controllable synthesis of zinc hydroxyfluoride nanomaterials with different morphologies and their environmental photocatalytic applications

A technology of zinc hydroxyfluoride and nanomaterials, applied in chemical instruments and methods, catalysts for physical/chemical processes, zinc halide, etc., to achieve the effects of mild reaction conditions, rich and diverse morphological features, and high yields

Active Publication Date: 2021-07-30
HUAIBEI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is still a major challenge to controllably synthesize ZnF(OH) nanostructures with different morphologies using a simple, efficient and relatively mild experimental route.

Method used

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  • Controllable synthesis of zinc hydroxyfluoride nanomaterials with different morphologies and their environmental photocatalytic applications
  • Controllable synthesis of zinc hydroxyfluoride nanomaterials with different morphologies and their environmental photocatalytic applications
  • Controllable synthesis of zinc hydroxyfluoride nanomaterials with different morphologies and their environmental photocatalytic applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment prepares zinc hydroxyfluoride nanomaterials according to the following steps:

[0033] (1) Weigh 0.83g ammonium fluoride and a certain amount of zinc source (0.49g zinc acetate or 0.31g zinc chloride or 0.64g zinc sulfate heptahydrate or 0.66g zinc nitrate hexahydrate or 0.59g zinc acetylacetonate), in in a plastic beaker;

[0034] (2) Add 82 mL of solvent deionization to the beaker, and stir until the ammonium fluoride and zinc source are completely dissolved;

[0035] (3) Add 0.18 g of alkali source sodium hydroxide to the beaker, stir for 2 hours to obtain a suspension;

[0036] (4) Transfer the suspension to a 100 mL polytetrafluoroethylene liner, seal it, and conduct a hydrothermal reaction at 140° C. for 6 hours. The resulting product is washed and dried to obtain zinc hydroxyfluoride nanomaterials.

[0037] Characterize the zinc hydroxyfluoride nanomaterial prepared in this example, the results are as follows figure 1 and figure 2 shown. in,...

Embodiment 2

[0039] The method of this embodiment is the same as that of Example 1 (using zinc nitrate as the zinc source), except that the alkali source used in step (3) is tri-n-butylamine.

[0040] Such as image 3 As shown, when other conditions remain unchanged, after replacing sodium hydroxide with tri-n-butylamine, the prepared ZnF(OH) nanomaterial is a flat hat-like hierarchical structure composed of a large number of nanoribbons.

Embodiment 3

[0042] The method of this embodiment is the same as that of Example 1 (using zinc nitrate as the zinc source), except that the alkali source used in step (3) is sodium edetate.

[0043] Such as Figure 4 As shown, when other conditions remain unchanged, after replacing sodium hydroxide with sodium ethylenediamine tetraacetate, a cruciferous ZnF(OH) micro-nano graded material can be obtained.

[0044] Depend on figure 2 d. image 3 and Figure 4 It can be seen that when the alkalis added in step (3) are sodium hydroxide, tri-n-butylamine and sodium edetate, one-dimensional nanobelts, two-dimensional flat hat-like hierarchical structures and three-dimensional cross Flower-like micro-nano hierarchical structure. It can be seen that the morphology of ZnF(OH) materials can also be adjusted by controlling the type of alkali.

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Abstract

The invention discloses a controllable synthesis method of hydroxyzinc fluoride nanomaterials with different shapes and its application in environmental photocatalysis. It adopts hydrothermal reaction, controls the temperature and time of zinc source, solvent, alkali and hydrothermal reaction, and controls the hydroxy Morphology of zinc fluoride nanomaterials, obtain zinc fluoride hydroxylated nanomaterials with different shapes. The preparation method of the present invention is simple, the reaction conditions are mild, and the yield is high; the morphological characteristics of the zinc hydroxyfluoride nanomaterial obtained by the method of the present invention are rich and diverse and can be adjusted, and have obvious catalytic activity, and can be used for photocatalytic degradation of various organic pollutants (such as brilliant cresol blue, rhodamine B, xylenol orange, bromocresol green, Congo red, methylene blue, phenol, and benzene).

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation and photocatalysis, and in particular relates to a controllable synthesis method of zinc hydroxyfluoride nanomaterials with different shapes and its application in the field of environmental photocatalysis. Background technique [0002] Nanomaterials have attracted extensive attention due to their unique physical and chemical properties, and the controllable synthesis of nanomaterials is one of the research hotspots in the field of nanomaterials. As an important zinc-based nanomaterial, zinc hydroxyfluoride (ZnF(OH)) is not only an important precursor for the synthesis of zinc oxide (ZnO) nanomaterials with special morphology, but also an effective photocatalytic decomposition of organic dyes and catalytic Efficient catalyst for the synthesis of pyridine. It is well known that the chemical and physical properties of nanomaterials strongly depend on their morphology, dimensionalit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G9/04B82Y40/00B01J27/138
CPCC01G9/04B82Y40/00B01J27/138C01P2002/72C01P2004/03C01P2004/20C01P2004/16C01P2004/30B01J35/39
Inventor 孟苏刚郑秀珍吴惠惠付先亮陈士夫
Owner HUAIBEI NORMAL UNIVERSITY
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