Preparation method of organic layered bimetallic silicate

A bimetallic and organic layer technology, applied in silicon organic compounds, chemical instruments and methods, organic compounds/hydrides/coordination complex catalysts, etc., can solve problems such as poor dispersion, high temperature and high pressure, expensive precious metals, etc., to achieve Synthesis of low energy consumption and low cost effect

Pending Publication Date: 2022-07-12
SOUTHWEAT UNIV OF SCI & TECH
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  • Description
  • Claims
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Problems solved by technology

[0003] The inventor expresses: compared with monometallic nanozyme, bimetallic nanozyme can produce remarkable synergism thereby enhances nanozyme catalytic performance, but in practical application bimetallic nanozyme is still subject to great limitation, main problem has: (1 ) The catalytic activity of nanozymes is low, and there are also problems such as poor dispersion during use; (2) the aforementioned precious metals for catalysis are expensive; (3) the preparation of most nanozymes usually requires conditions such as high temperature and high pressure

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  • Preparation method of organic layered bimetallic silicate
  • Preparation method of organic layered bimetallic silicate
  • Preparation method of organic layered bimetallic silicate

Examples

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Embodiment 1

[0064] The present embodiment provides a preparation method of organic layered bimetallic silicate, and the preparation method includes the following steps:

[0065] Prepare FeCl according to the molar ratio of Table 1 3 ·6H 2 O, CuCl 2 ·2H 2 O, 3-aminopropyltriethoxysilane. First of all, Table 1 shows the different proportions of FeCl at room temperature 3 ·6H 2 O and CuCl 2 ·2H 2 Add O into ethanol to dissolve, ultrasonically disperse for 2-10 min, and after mixing evenly, add 3-aminopropyltriethoxysilane dropwise to it to form a precipitated slurry. Then, stirring was performed in a magnetic stirrer at a rotational speed of 600-1000 r / min for 12-24 h. After the reaction, the mixture was centrifuged at 4000-8000 r / min for 5 min, washed twice with ethanol to remove residual ferric chloride and cupric chloride, and then dried at 40°C to obtain the samples of Examples 1-7.

[0066] Table 1 Element ratios corresponding to examples 1-7

[0067]

[0068] A series of c...

Embodiment 2

[0075] The present embodiment provides a preparation method of organic layered bimetallic silicate, and the preparation method includes the following steps:

[0076] Prepare MnCl according to the molar ratio of Table 2 2 ·4H 2 O, CuCl 2 ·2H 2 O, 3-aminopropyltriethoxysilane. First, different ratios of MnCl were mixed at room temperature 2 ·4H 2 O and CuCl 2 ·2H 2 Add O into ethanol to dissolve, ultrasonically disperse for 2-10 min, and after mixing evenly, add 3-aminopropyltriethoxysilane dropwise to it to form a precipitated slurry. Then, stir with a magnetic stirrer at a rotational speed of 600-1000 r / min for 12-20 h. After the reaction, the mixture was centrifuged at 4000-8000 r / min for 5 min, washed twice with ethanol to remove residual manganese chloride and copper chloride, and then dried at 40°C to obtain the samples of Examples 8-12.

[0077] Table 2 Element ratios corresponding to examples 8-12

[0078]

[0079]

[0080] A series of characterizations, ...

example 8

[0081] First, as Figure 3a As shown, the crystal structures of monometallic layered silicates (OMP (manganese but no copper), OCP (copper but no manganese)) and different ratios of OMCP were investigated by XRD as comparative samples. Figure 3a , the curves and their meanings are: a.OCP, b.OMCP-1:7 (Example 8), c.OMCP-1:3 (Example 9), d.OMCP-1:1 (Example 10), e .OMCP-3:1 (Example 11), f.OMCP-7:1 (Example 12), g.OMP.

[0082] The XRD patterns of bimetallic OMCP have a similar trend to that of monometallic layered silicates. 001 = 1.5-1.8 nm) with typical characteristic fronts of layered organoclay structure; and with the gradual increase of iron content, the d of OMCP 001 The surface characteristic peaks gradually shifted to lower angles, and the interlayer spacing increased accordingly. Furthermore, the peaks of organic layered bimetallic silicates were not split compared to monometallic layered silicates, suggesting that bimetallic OMCP is a single phase, rather than mec...

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Abstract

The invention provides a preparation method of organic layered bimetallic silicate. The method comprises the following steps that chloride or nitrate of a first transition metal element and chloride or nitrate of a second transition metal element are added into a solvent and dissolved, a mixed solution is obtained, and the molar ratio of the first transition metal element to the second transition metal element is 1: (1 / 10-10); 3-aminopropyltriethoxysilane is slowly added into the mixed solution, precipitate slurry is formed, and the adding amount of the 3-aminopropyltriethoxysilane enables the ratio of the total molar weight of the first transition metal element and the second transition metal element in the mixed solution to the molar weight of the silicon element in the 3-aminopropyltriethoxysilane to meet the requirement that the ratio of the total molar weight of the first transition metal element and the second transition metal element in the mixed solution to the molar weight of the silicon element in the 3-aminopropyltriethoxysilane is (1-4): 4; stirring until the reaction is finished, separating, cleaning and drying. The preparation method of the organic layered bimetallic silicate is low in cost and low in synthesis energy consumption.

Description

technical field [0001] The invention relates to the technical field of layered nano-enzyme material synthesis, in particular to a preparation method of an organic layered double metal silicate. Background technique [0002] In the past decade, man-made mimic enzymes (nanozymes) based on nanomaterials have received increasing attention due to their tunable catalytic efficiency, excellent environmental stability, and ease of preparation compared with natural enzymes. However, the catalytic activity of nanozymes is still relatively low compared to native enzymes. Compared with individual nanomaterials, nanomaterials functionally assembled from two or more components generally exhibit enhanced catalytic activity due to synergistic catalysis. For example, nanomaterials such as Au / graphene nanosheets, Au@Pt and Au@Ag have been widely studied and have broad application prospects in biosensing, biocatalysis, and environmental fields. Among them, noble metals have received extensiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/02C07F7/08B82Y30/00B82Y40/00
CPCB01J31/0274B01J31/0275B01J31/0254B01J35/023C07F7/081C07F7/083B82Y30/00B82Y40/00
Inventor 孙仕勇李柳吕瑞董发勤谭道永王可刘瑾
Owner SOUTHWEAT UNIV OF SCI & TECH
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