NiO@PANI@ZnO three-dimensional nano composite material and preparation method thereof

A composite material, three-dimensional nanotechnology, applied in nanotechnology, nanotechnology, analytical materials, etc., can solve the problems of low sensitivity, limit the development and popularization of nano-ZnO, and achieve low preparation cost, excellent biosensing performance, and improved The effect of detection sensitivity

Active Publication Date: 2016-01-27
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology describes methods for producing high quality 3D nitrogen compounds (NCNs) such as zinc oxide or silicone hydrogel microparticulators made from these NCNs. These structures have been found useful in various applications like sensor development, drug delivery systems, biomedical devices, etc., where they serve both functions related to electronic communication between molecules and enzymes involved in metabolism processes.

Problems solved by technology

Technics Problem: Current methods for preparation of zinc oxynitride materials have drawbacks including difficulty selecting desired compounds or reactants during chemical reaction processes. Additionally, current techniques involve complex compositions containing multiple components like metal elements, organic molecule(s)/bioreceptor interactions, etc., making them challenges to achieve both highly accurate results while also being able to effectively target various types of small molecular targets.

Method used

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  • NiO@PANI@ZnO three-dimensional nano composite material and preparation method thereof
  • NiO@PANI@ZnO three-dimensional nano composite material and preparation method thereof
  • NiO@PANI@ZnO three-dimensional nano composite material and preparation method thereof

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Embodiment 1

[0038] The specific preparation process of the present invention is as figure 1 shown. Take the surface area of ​​about 1cm 2 The nickel foam was ultrasonically cleaned with ethanol and deionized water for 10 minutes, dried with nitrogen, and sintered in a tube furnace at 700 °C for 4 hours in an air atmosphere to obtain a 3DNiO framework. from SEM figure 2 (a) It can be seen that the 3DNiO framework has a large number of pores and a large specific surface area, which is conducive to contact with biomolecules and hole transfer.

[0039]A three-electrode system is adopted, with a 3DNiO frame as the working electrode, a Pt electrode and an Ag / AgCl electrode as the counter electrode and a reference electrode, respectively, the electrolyte is 0.3M aniline solution, and 0.5M HCl is added to make the pH figure 2 (b) It can be seen that the PANI membrane with a thickness of about 10 microns is evenly covered on the surface of NiO. It can be seen from the enlarged illustration that...

Embodiment 2

[0044] Take the surface area of ​​about 1cm 2 The nickel foam was ultrasonically cleaned with ethanol and deionized water for 10 minutes, dried with nitrogen, and sintered in a tube furnace at 700 °C for 5 hours in an air atmosphere to obtain a 3DNiO framework. Experiments have shown that changing the sintering time within a certain range will not affect the synthesis of materials.

[0045] A three-electrode system is adopted, with a 3DNiO frame as the working electrode, a Pt electrode and an Ag / AgCl electrode as the counter electrode and a reference electrode, respectively, the electrolyte is 0.3M aniline solution, and 0.5M Hcl is added to make the pH<1. The electrochemical polymerization potential is 1.2V, polymerized at 35-40°C for 10min, washed twice with ethanol and deionized water respectively, and dried in an oven at 40°C for 12h. Experiments show that properly prolonging the electrochemical polymerization time can increase the thickness of PANI film.

[0046] The thr...

Embodiment 3

[0048] Take the surface area of ​​about 1cm 2 The nickel foam was ultrasonically cleaned with ethanol and deionized water for 10 minutes, dried with argon, and sintered in a tube furnace at 700 °C for 4 hours in an air atmosphere to obtain a 3DNiO framework. Experiments have proved that using different inert gases to dry nickel foam does not change the structure and properties of the 3DNiO framework.

[0049] A three-electrode system is adopted, with a 3DNiO frame as the working electrode, a Pt electrode and an Ag / AgCl electrode as the counter electrode and a reference electrode, respectively, the electrolyte is 0.3M aniline solution, and 0.5M Hcl is added to make the pH2 SO 4 Substitution of HCl does not change the structural characteristics and properties of the PANI membrane.

[0050] The three-electrode system is also used, with the prepared 3DNiOPANI as the working electrode, the Pt electrode and the Ag / AgCl electrode as the counter electrode and the reference electrode,...

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Abstract

The invention discloses a NiO@PANI@ZnO three-dimensional nano composite material and a preparation method thereof. The three-dimensional nano composite material comprises a 3D NiO frame, a PANI porous fiber membrane and ZnO nanoparticles, wherein the surface of NiO is uniformly coated with the PANI porous fiber membrane, and the ZnO nanoparticles are uniformly distributed on the PANI membrane. The preparation method comprises the steps that a thermal oxidation method is adopted, and the 3D NiO frame is sintered and prepared in a tube furnace with foam nickel serving as a template; an electrochemical polymerization method is adopted, the NiO serves as a working electrode, and the NiO frame is coated with the PANI porous fiber membrane; and an electrochemical deposition method is adopted, a NiO@PANI composite material serves as a working electrode, and the ZnO nanoparticles are adsorbed on the surface of the PANI membrane. The preparation method is simple in technique, mild in reaction condition, low in preparation cost and good in stability. According to the prepared three-dimensional nano composite material, the advantages of a p-n junction and a p-p junction are fully utilized, the synergistic effect is brought into play, the detection sensitivity is improved, high selectivity is achieved at the same time, and the NiO@PANI@ZnO three-dimensional nano composite material and the preparation method thereof can be widely applied to the field of biosensors.

Description

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Claims

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Application Information

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Owner OCEAN UNIV OF CHINA
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