3D flexible electrode or 3D flexible catalyst as well as preparation method and application thereof

A flexible catalyst and flexible electrode technology, applied in the direction of physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, electrochemical variables of materials, etc., can solve the problem of limited surface area of ​​carbon fibers, low activity of loaded nanomaterials, etc. problems, to achieve the effects of easy infiltration and penetration, enhanced analytical sensitivity, and simple production process

Active Publication Date: 2017-02-22
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the object of the present invention is a three-dimensional flexible electrode and its preparation and application, wherein through the overall process design of its key preparation process, the reaction conditions of each step (such as reactant concentration, Reaction time, reaction temperature, etc.) etc. are improved, compared with the prior art, can effectively solve the problem of limited carbon fiber surface area and low activity of loaded nanomaterials. The present invention first forms zinc oxide arrays on the surface of carbon fibers to increase the surface area of ​​carbon fibers. Then polydopamine is coated on the outside of zinc oxide, and precious metal particles are loaded on polydopamine, which greatly improves the loading capacity of carbo

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  • 3D flexible electrode or 3D flexible catalyst as well as preparation method and application thereof
  • 3D flexible electrode or 3D flexible catalyst as well as preparation method and application thereof
  • 3D flexible electrode or 3D flexible catalyst as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Synthesis of carbon fiber@nitrogen-doped carbon tube / gold composite:

[0036] 1) Synthesis of carbon fiber / zinc oxide composite material (that is, carbon fiber with zinc oxide crystals growing on the surface): the carbon fiber is placed in 30% hydrogen peroxide (that is, an aqueous hydrogen peroxide solution with a hydrogen peroxide mass percentage concentration of 30%) for 12h to obtain the oxidized The carbon fibers were washed and dried with deionized water; then the oxidized carbon fibers were soaked in a mixed solution of 0.01M zinc acetate and 0.01M ethylenediamine with ethylene glycol methyl ether (CAS number: 109-86-4) as a solvent In the process, zinc oxide seeds (the zinc oxide seed crystals are grown on carbon fibers) were crystallized and grown in a muffle furnace at 300 °C; then the carbon fibers on which the zinc oxide seeds were grown were placed in a place containing both 0.1M zinc nitrate hexahydrate and 0.1M hexahydrate. In the methinetetramine mixed s...

Embodiment 2

[0042] Synthesis of carbon fiber@nitrogen-doped carbon tube / palladium composite:

[0043] 1) Synthesis of carbon fiber / zinc oxide composite material: carbon fiber was placed in 30% hydrogen peroxide for 12h, washed and dried with deionized water; then the oxidized carbon fiber was soaked in 0.01M zinc acetate with ethylene glycol methyl ether as solvent and 0.01M ethylenediamine mixed solution to crystallize and grow zinc oxide seeds in a muffle furnace at 300°C; then place the carbon fibers on which the zinc oxide seeds were grown in a solution containing 0.1M zinc nitrate hexahydrate and 0.1M hexamethylenetetramine. In the mixed solution, a precursor is obtained; then, the precursor is placed in a reaction kettle, and the reaction kettle is placed in an oven at 95 ° C for hydrothermal reaction for 12 hours to obtain a carbon fiber / zinc oxide composite material;

[0044] 2) Synthesis of carbon fiber / zinc oxide@polydopamine composite material: dissolve tris(hydroxymethyl)amino...

Embodiment 3

[0049] Synthesis of carbon fiber@nitrogen-doped carbon tube / gold composite:

[0050] 1) Synthesis of carbon fiber / zinc oxide composite material: carbon fiber was placed in 30% hydrogen peroxide for 12h, washed and dried with deionized water; then the oxidized carbon fiber was soaked in 0.01M zinc acetate with ethylene glycol methyl ether as solvent and 0.01M ethylenediamine mixed solution to crystallize and grow zinc oxide seeds in a muffle furnace at 300°C; then place the carbon fibers on which the zinc oxide seeds were grown in a solution containing 0.1M zinc nitrate hexahydrate and 0.1M hexamethylenetetramine. In the mixed solution, a precursor is obtained; then, the precursor is placed in a reaction kettle, and the reaction kettle is placed in an oven at 95 ° C for hydrothermal reaction for 12 hours to obtain a carbon fiber / zinc oxide composite material;

[0051]2) Synthesis of carbon fiber / zinc oxide@polydopamine composite material: dissolve tris(hydroxymethyl)aminomethan...

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Abstract

The invention discloses a 3D flexible electrode or a 3D flexible catalyst as well as a preparation method and an application thereof. The preparation method comprises steps as follows: (1) a zinc oxide crystal array grows on carbon fibers; (2) a carbon fiber/zinc oxide@polydopamine composite material is synthesized; (3) a carbon fiber/zinc oxide@polydopamine-precious metal composite material is prepared. The method can further comprise the step as follows: (4) a carbon fiber@nitrogen-doped carbon tube-precious metal composite material is prepared. The whole process design of key preparation processes, the reaction condition of each step and the like are improved, the problems of limited carbon fiber surface area and low loading nanomaterial activity can be effectively solved, the prepared carbon fiber/zinc oxide@polydopamine-precious metal composite material and the prepared carbon fiber@nitrogen-doped carbon tube-precious metal composite material serve as the 3D flexible electrode and the 3D flexible catalyst, have a good catalytic effect and are particularly applicable to detection of reactive oxygen free radicals in cancer cells.

Description

technical field [0001] The invention belongs to the field of catalysts, and in particular relates to a three-dimensional flexible electrode or a three-dimensional flexible catalyst and their preparation and application. Background technique [0002] Under the market demand for easy portability and miniaturization of commodities, along with the development and innovation of the electronics industry, the electrochemical devices integrated with flexible micro-scales have revolutionized electrochemical sensors. Such products have the ability to enable real-time monitoring of chemical information in vivo and improve its stability. Carbon fiber electrodes can not only meet the special needs of electrode systems in the micron size range, but also meet the requirements of easy portability due to their special flexibility. Specifically, carbon fibers exhibit a promising set of features, such as small size (5–30 μm in diameter), high strength and elastic modulus, good biocompatibilit...

Claims

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Application Information

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IPC IPC(8): B01J23/52B01J23/44B01J23/50G01N27/30
CPCB01J23/44B01J23/50B01J23/52G01N27/308
Inventor 肖菲张艳王帅王露肖健
Owner HUAZHONG UNIV OF SCI & TECH
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