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Fabrication of flexible paper-based ceria nanowire-metal-organic framework heterojunction

A metal-organic framework, ceria technology, applied in the preparation/processing of rare earth metal compounds, ceria/cerium hydroxide, lanthanide oxide/hydroxide, etc., can solve the limitations, unfavorable framework materials and substrates stable structure and other issues, to achieve the effect of simple preparation method, promotion of in situ growth reaction kinetics, good electrical conductivity and photoelectrochemical response performance

Inactive Publication Date: 2021-04-27
UNIV OF JINAN
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  • Application Information

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Problems solved by technology

Recently, metal organic framework materials are mainly synthesized first and then used, which is not conducive to the formation of a stable structure between the frame material and the substrate, thus limiting its use in electronic devices, especially flexible electronic products.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A simple and efficient preparation of flexible paper-based ceria nanowire-metal organic framework heterojunction, the specific preparation process is as follows:

[0021] (1) Select filter paper as the paper base, and cut the paper into a size of 4 cm×4 cm;

[0022] (2) Activation of the paper substrate;

[0023] The activation of the paper substrate includes the following steps: putting the above-mentioned 4 cm×4 cm paper sheet in 20 mL of water / ethanol / isopropanol mixed solution, wherein the volume of water / ethanol / isopropanol solution is The ratio was 2:1:1; the paper was sonicated for 2 h, then the paper was taken out, placed in a mixture of water and ethanol with a volume ratio of 1:1, and ultrasonicated for 1 h to remove the residual organic matter on the surface of the paper; then , put the paper in an oven and dry at 150 °C for 48 h;

[0024] (3) Metal-organic framework materials grown on the surface of the paper:

[0025] The growth of the metal-organic fram...

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Abstract

The invention discloses a method for preparing a flexible paper-based ceria nanowire-metal-organic framework heterojunction, which comprises the following steps: using filter paper as a substrate-activating the surface of the filter paper-in-situ growth of a metal-organic framework material-electrodeposition to prepare two Paper sheets co-decorated with cerium oxide nanowire-metal-organic framework heterojunctions. The feature of the present invention is that filter paper is selected as the heterojunction growth substrate, which can not only increase the water absorption of the paper fiber surface and promote the growth of metal-organic framework materials, but at the same time, the existence of heterojunction can greatly improve the photoelectricity of the paper substrate. The chemical response increases the capacitive performance of the paper substrate, laying a good foundation for the preparation of new multifunctional flexible biosensing platforms and flexible supercapacitors.

Description

technical field [0001] The invention relates to a method for preparing a paper-based ceria nanowire-metal organic framework heterojunction, and belongs to the field of preparation of organic-inorganic hybrid nanomaterials. Background technique [0002] As the most stable metal oxide among rare earth compounds, cerium oxide has good optical and electrochemical properties, so it can be used in photocatalytic hydrogen production, photocatalytic degradation of organic pollutants, such as methylene blue, methyl orange, and reactive black. And it shows unique application prospects in fields such as supercapacitors. However, the poor stability of ceria nanomaterials alone is not conducive to its use in optoelectronic devices and the integration of multifunctional devices. [0003] Metal-organic framework materials are regular crystal structures composed of metal nodes and organic ligand supports. Due to the designability of ligand molecules and central metal nodes, metal-organic f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/46C01F17/235C01F17/10
CPCC01P2004/16C01P2006/40H01G11/24H01G11/30H01G11/46Y02E60/13Y02P20/133
Inventor 于京华李丽于海瀚陈梦琦燕钊葛慎光
Owner UNIV OF JINAN
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