Preparation method and application of multifunctional laccase-like CuNi/CoMoO4

A multifunctional, laccase technology, applied in chemical instruments and methods, water/sludge/sewage treatment, chemical analysis using catalysis, etc., to achieve the effect of increasing specific surface area, good catalytic activity, and good substrate versatility

Active Publication Date: 2021-09-07
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, it remains a great challenge to prepare multifunctional nanozymes with high laccase-like activity for chemical biosensing, pollutant degradation, and activation of PMS, etc.

Method used

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  • Preparation method and application of multifunctional laccase-like CuNi/CoMoO4
  • Preparation method and application of multifunctional laccase-like CuNi/CoMoO4
  • Preparation method and application of multifunctional laccase-like CuNi/CoMoO4

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Experimental program
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preparation example Construction

[0075] A CuNi / CoMoO as a multifunctional laccase-like 4 A preparation method comprising the steps of:

[0076] S1: CoMoO 4 preparation of

[0077] Na 2 MoO 4 2H 2 O and Co(NO 3 ) 2 ·6H 2 O was fully stirred and dissolved in deionized water, and then reacted in an autoclave; after centrifugation, it was washed three times with deionized water and ethanol to obtain a precursor; after that, it was vacuum-dried, and the precursor was calcined to obtain CoMoO 4 ;

[0078] S2: CuNi / CoMoO 4 preparation of

[0079] CuCl 2 2H 2 O, NiCl 2 ·6H 2 O and prepared CoMoO 4 Dissolve in deionized water and stir; then add NaHB 4 Stirring, followed by washing with deionized water and ethanol, followed by vacuum drying, yielded CuNi / CoMoO 4 .

[0080] In step S1: Na 2 MoO 4 2H 2 O and Co(NO 3 ) 2 ·6H 2 The amount ratio of O is the molar ratio, and the molar ratio is 1:1; the reaction conditions in the autoclave are: the reaction temperature is 155-165°C, the reaction time i...

Embodiment

[0090] (1) CuNi / CoMoO 4 Preparation example

[0091] S1: CoMoO 4 preparation of

[0092] 1mmolNa 2 MoO4·2H 2 O and 1mmolCo(NO 3 ) 2 ·6H 2 O was fully stirred and dissolved in 40mL deionized water, and then reacted in a 50mL autoclave at 160°C for 10h; after centrifugation, washed three times with deionized water and ethanol to obtain the precursor; then vacuum-dried at 80°C, the precursor Calcined at 350 °C for 2 h in the air to obtain CoMoO 4 .

[0093] S2: CuNi / CoMoO 4 preparation of

[0094] Weigh 0.0768g of CuCl at a molar ratio of 3:1 2 2H 2 O, 0.0387g NiCl 2 ·6H 2 0.04g of CoMoO prepared by O and S1 4 Dissolve in 20mL deionized water and stir for 3h, then add 10mL, 10mg / mL NaHB 4 Stirring for 5 h, followed by washing with deionized water and ethanol, and vacuum drying at 80 °C, CuNi / CoMoO with a Cu / Ni molar ratio of about 3:1 was obtained 4 .

[0095] Such as Figure 1 to Figure 4 As shown, CuNi / CoMoO was prepared by a combined method of hydrothermal, ...

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Abstract

The invention relates to a preparation method and application of multifunctional laccase-like CuNi / CoMoO4. The preparation method comprises the following steps: S1, preparation of CoMoO4; and S2, preparation of CuNi / CoMoO4. According to the invention, the CuNi / CoMoO4 prepared by adopting a hydrothermal, calcining and dipping combined method is beneficial for adsorbing reactants to participate in an enzyme catalytic reaction, and shows relatively good catalytic activity; and the ascorbic acid colorimetric sensor is established by using the laccase-like activity of CuNi / CoMoO4, a portable intelligent terminal platform combined with a chroma signal is constructed, and efficient degradation of acid fuchsin is realized.

Description

technical field [0001] The present invention relates to a kind of chemical substance preparation and determination technology, especially to a kind of CuNi / CoMoO as multifunctional laccase-like 4 Preparation method and application. Background technique [0002] Nanomaterials with bioenzyme-like activity are called nanozymes, which have attracted great attention and interest in various fields because they can overcome the inherent shortcomings of natural enzymes, such as long fermentation time, low yield, and poor stability. At present, many nanozymes have been shown to have peroxidase, oxidase, catalase, superoxide dismutase, and laccase-like properties, and have broad applications in biosensing, pollutant degradation, and environmental remediation. application prospects. For example, someone successfully prepared MMoO 4 (M=Co, Ni) nanoflowers, which have peroxidase-like activity, can be used for copper ions (Cu 2+ ) for selective detection. Others prepared metal-organi...

Claims

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Application Information

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IPC IPC(8): B01J23/885C02F1/72G01N21/78G01N21/31G01N21/33G01N31/10C02F101/30C02F101/34C02F101/38
CPCB01J23/885G01N21/78G01N21/31G01N21/33G01N31/10C02F1/725C02F1/722C02F2305/023C02F2101/30C02F2101/345C02F2101/38C02F2101/40
Inventor 孙萌萌鲁志伟饶含兵宋畅党阳黄舒
Owner SICHUAN AGRI UNIV
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