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Nickel phosphate/Co-MOFs composite material, and preparation methods and application thereof

A composite material, nickel phosphate technology, applied in the direction of material electrochemical variables, etc., can solve the problems of agglomeration and low specific surface area, and achieve the effects of simple preparation process, increased specific surface area, and low cost

Active Publication Date: 2019-05-14
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows for uniform loading of nanoparticles onto metal organic frameworks (MOFS) without causing them clump together during synthesis. By doing this, they increase their effectiveness at catalyzing chemical reactions like enzymes involved in blood sugar metabolism. Additionally, these composites have high electrical conductivity due to strong interactions between different components within the framework materials themselves. These properties make them ideal candidates for use in fuel cells where oxygen reduction reaction occurs over time.

Problems solved by technology

This patented technical problem addressed in this patents relates to developing small but effective devices with good performance such as being able to accurately measure blood sugar levels over long periods (>6 months) without causing damage or discomfort from excessive use of chemical reagents like enzymes. Current commercially available solutions involve complex procedures involving multiple steps, making these processes difficult to integrate into wearables or mobile electronic systems.

Method used

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  • Nickel phosphate/Co-MOFs composite material, and preparation methods and application thereof
  • Nickel phosphate/Co-MOFs composite material, and preparation methods and application thereof
  • Nickel phosphate/Co-MOFs composite material, and preparation methods and application thereof

Examples

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Effect test

Embodiment 1

[0034] Preparation of nickel phosphate / Co-MOFs composites

[0035] (1) After dissolving nickel nitrate and ammonium dihydrogen phosphate in deionized water, add N,N-dimethylformamide, mix well, and conduct a hydrothermal reaction at 100°C in the reactor for 5 hours. After the hydrothermal reaction is completed, filter and take Precipitate, wash the precipitate and dry at 60°C for 10 hours to obtain nano-nickel phosphate, wherein the molar ratio of nickel element in nickel nitrate, phosphorus element in ammonium dihydrogen phosphate, water and N,N-dimethylformamide is 40 :20:6:9;

[0036] (2) Disperse the nano-nickel phosphate prepared in step (1) in methanol, then add cobalt nitrate, add 2-methylimidazole methanol solution after stirring for 2 hours, obtain the reaction solution, stir the reaction solution for 2 hours and then let it stand 24h, centrifuge and get precipitation, make nickel phosphate / Co-MOFs composite material, wherein the mass ratio of nano-nickel phosphate, ...

Embodiment 2

[0038] Preparation of nickel phosphate / Co-MOFs composites

[0039] (1) Dissolve nickel sulfate and sodium dihydrogen phosphate in deionized water, add N,N-dimethylformamide, mix well, and conduct a hydrothermal reaction at 150°C for 10 hours in the reactor, and filter to take Precipitate, wash the precipitate and dry it at 60°C for 10 hours to obtain nano-nickel phosphate, wherein the molar ratio of nickel element in nickel salt, phosphorus element in phosphate, water and N,N-dimethylformamide is 40:20 :35:1;

[0040] (2) Disperse the nano-nickel phosphate prepared in step (1) in ethanol, then add cobalt sulfate, add 2-methylimidazole ethanol solution after stirring for 1h, obtain the reaction solution, stir the reaction solution for 0.5h and then statically Put 10h, centrifuge and get precipitation, make nickel phosphate / Co-MOFs composite material, wherein the mass ratio of nano-nickel phosphate, cobalt salt and 2-methylimidazole prepared in step (1) in the reaction solution...

Embodiment 3

[0042] Preparation of nickel phosphate / Co-MOFs composites

[0043] (1) After dissolving nickel chloride and diammonium hydrogen phosphate in deionized water, add N,N-dimethylformamide, mix well, and conduct a hydrothermal reaction at 180°C for 3 hours in the reactor, and filter after the hydrothermal reaction is completed Take the precipitate, wash the precipitate and dry it at 60°C for 10 hours to obtain nano-nickel phosphate, wherein the molar ratio of nickel in the nickel salt, phosphorus in the phosphate, water and N,N-dimethylformamide is 40: 20:18:5;

[0044] (2) Disperse the nano-nickel phosphate prepared in step (1) in N,N-dimethylformamide, then add cobalt chloride, stir for 5h and then add 2-methylimidazole N,N-dimethylformamide base formamide solution, to obtain the reaction solution, the reaction solution was stirred for 5h and left to stand for 18h, centrifuged to get the precipitate, and the nickel phosphate / Co-MOFs composite material was obtained, wherein the n...

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Abstract

The invention relates to a nickel phosphate/Co-MOFs composite material, and preparation methods and application thereof and belongs to the technical field of an electrocatalyst material. According a method, nickel salt and phosphate are dissolved in water; N,N-dimethylformamide is added; after uniform mixing is carried out, hydrothermal reaction is carried out by a mixture in a reactor; after thehydrothermal reaction is finished, filtering is carried out, and a sediment is obtained; the sediment is washed and dried to prepare nano-nickel phosphate; the nano-nickel phosphate is dispersed in asolvent; cobalt salt is added; stirring is carried out for 1-5h; 2-methylimidazole solution is added; reaction liquid is obtained; the reaction liquid is stirred for 0.5-5h and then is placed still for 1-24h; and centrifugation is carried out, the sediment is obtained, and the nickel phosphate/Co-MOFs composite material is prepared. An electrode modified by the composite material is high in glucose sensing sensitivity and low in detection limit and can be used for detecting glucose in human serum. The composite material is simple in preparation technology. Additives such as a reducing agent and a structure-directing agent are avoided. An equipment requirement is not high. Cost is low. The composite material is applicable to industrial production.

Description

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Claims

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Application Information

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Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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