Application and evaluation method of catalytic product and organic layered bimetallic silicate

An organic layer and silicate technology, which is applied in the field of layered nano-enzyme material synthesis, can solve problems such as poor dispersion, high temperature and high pressure, and expensive precious metals, and achieve low synthesis energy consumption, low cost, and improved enzyme catalytic activity.

Pending Publication Date: 2022-08-05
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Application and evaluation method of catalytic product and organic layered bimetallic silicate
  • Application and evaluation method of catalytic product and organic layered bimetallic silicate
  • Application and evaluation method of catalytic product and organic layered bimetallic silicate

Examples

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Embodiment 1

[0082] In this embodiment, Fe is selected as the first transition metal element M, and Cu is selected as the second transition metal element to form [H 2 N(CH 2 ) 3 ] 4 [Si z (Fe x Cu y ) 6 O 8 (OH) 2 ], can be called organic layered iron-copper bimetallic silicate, wherein x:y satisfies 1:(1 / 10~10), and (x+y):z satisfies (1~4):4.

[0083] Specifically, the preparation of the organic layered iron-copper bimetallic silicate of the present embodiment can be achieved by the following methods.

[0084] 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, stir with a magnetic stirrer at a rotational speed of 600-1000 r / min f...

Embodiment 2

[0094] In this example, a catalytic product is prepared, using the organic layered bimetallic silicate obtained in Example 1.

[0095] Catalytic products include solvents and organic layered bimetallic silicates. The solvent includes one of water, acetic acid-sodium acetate buffer, phosphate buffer and tris-hydrochloric acid buffer, organic layered bimetallic silicate dissolved in solvent, organic layered bimetallic The dissolved amount of the silicate in the solvent can be no more than 20g / L.

Embodiment 3

[0097] This example is a method for evaluating the peroxidase activity of the organic layered double metal silicate, using the organic layered double metal silicate obtained in Example 1.

[0098] The method for evaluating the peroxidase activity of organic layered double metal silicates includes the following steps:

[0099] H at room temperature 2 O 2 -TMB chromogenic reaction to evaluate the peroxidase activity of OFCP nanozymes.

[0100] in H 2 O 2 In the presence of native peroxidase, the catalyzed oxidation of colorless TMB to the blue oxidation state can be rapidly carried out, thus, H 2 O 2 -TMB chromogenic reaction to evaluate the peroxidase activity of OFCP nanozymes. Figure 3a The peroxidase activity diagrams of OFCP with different ratios of Example 2 of the present invention are shown, Figure 3b The peroxidase activity profile of OFCP, OFP and OCP of Example 2 of the present invention is shown. like Figure 3a As shown, with the decrease of Fe / Cu molar r...

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Abstract

The invention provides an application and evaluation method of a catalytic product and organic layered double-metal silicate, the catalytic product is in a liquid state or a solid state, and under the condition that the product is in the liquid state, the catalytic product comprises a solvent and the organic layered double-metal silicate dissolved in the solvent; under the condition that the product is in a solid state, the catalytic product comprises a carrier and organic layered bimetallic silicate attached to the carrier; the chemical formula of the organic layered bimetallic silicate is [H2N (CH2) 3] 4 [Siz (MxQy) 6O8 (OH) 2]. The application of the organic layered double-metal silicate in preparation of a catalyst and an evaluation method of the enzymatic activity of the organic layered double-metal silicate adopt the organic layered double-metal silicate. The organic layered bimetallic silicate can be used for catalysis; the organic layered bimetallic silicate has improved enzyme catalytic activity, and 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 the application of a catalytic product, an organic layered bimetallic silicate in the preparation of a catalyst, and an organic layered bimetallic silicate method for the assessment of enzymatic activity. 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/02B01J23/745B01J23/889
CPCB01J31/0274B01J31/0275B01J23/745B01J23/8892B01J23/007
Inventor 孙仕勇吕瑞李柳董发勤谭道永王可刘瑾
Owner SOUTHWEAT UNIV OF SCI & TECH
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