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Preparation and application of self-assembly-based porphyrin/alumina composite nano-channel film

An alumina nanometer and nanochannel technology, which is applied in the field of nanomaterials, can solve the problems of cumbersome preparation process of composite nanochannels, high external environment requirements, and ion transport performance to be further improved, and achieves good photoresponsivity and photoreversibility. , the preparation method is simple, easy to operate and achieve the effect

Active Publication Date: 2018-08-28
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation process of this composite nanochannel is cumbersome, and additional modification of OTS molecules is required.
Reference [2] (Chem.Commun., 2014, 50, 3552--3555) reported a mesoporous molecular sieve (MCM-41) / polyimide (PI) composite channel. The environmental requirements are high, and the ion transport performance needs to be further improved

Method used

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  • Preparation and application of self-assembly-based porphyrin/alumina composite nano-channel film
  • Preparation and application of self-assembly-based porphyrin/alumina composite nano-channel film
  • Preparation and application of self-assembly-based porphyrin/alumina composite nano-channel film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A structurally symmetrical hourglass-shaped aluminum oxide nanochannel film used in the present invention is prepared by anodic oxidation, and the specific steps are as follows:

[0042] (1) Pretreatment: First, the specification is made of high-purity aluminum ((purity is 99.999%, thickness is 0.1mm) made into a size of 3 × 3cm 2 The aluminum sheet was pre-treated in detergent, acetone, absolute ethanol and high-purity water for 10 minutes respectively to clean the impurities on the aluminum oxide film.

[0043] (2) Electrochemical polishing: in perchloric acid (HClO 4 ) and ethanol (volume ratio 1:4) for electrochemical polishing, the polishing voltage is 17.0V, and the polishing time is three minutes, which makes the aluminum surface smoother and is conducive to the growth of the porous alumina layer.

[0044] (3) The first anodic oxidation: In a low-temperature and constant-temperature circulating water tank, control the reaction temperature to 5°C, use 0.3M oxalic...

Embodiment 2

[0052] The preparation of a self-assembled porphyrin / alumina composite nanochannel film provided by the present invention, the porphyrin / alumina composite nanochannel film is abbreviated as TPPS / Al 2 o 3 Composite nanochannel film, the specific implementation steps are as follows:

[0053] (1) Using the preparation method provided in Example 1, an hourglass-shaped aluminum oxide nanochannel film with a symmetrical structure was prepared by anodic oxidation, washed and dried naturally, and then used. The self-made hourglass-shaped aluminum oxide nano-channel film with symmetrical structure has a large pore diameter of 35-80 nm on the upper surface and a lower surface, a small pore diameter of 5-20 nm in the middle, and a thickness of 95-100 μm.

[0054] (2) The preparation concentration is 2mM TPPS aqueous solution and 0.5M sodium chloride aqueous solution.

[0055] (3) The TPPS molecule was asymmetrically modified on one side using a self-made groove in the laboratory.

[0...

Embodiment 3

[0061] TPPS / Al 2 o 3 The preparation of the composite nanochannel film, the specific implementation steps are as follows:

[0062] Other steps implemented in this example are the same as the preparation process of Example 2, the difference is that the modification time is 45min, and the obtained TPPS / Al 2 o 3 The pore structure on the upper surface of the composite nanochannel film is as follows: figure 1 (c).

[0063] TPPS / Al 2 o 3 Composite nanochannel thin film is used for ion transport performance test, and test condition is identical with the application condition of embodiment 2, and the I-V curve that obtains is as follows image 3 (c) shown.

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Abstract

The invention discloses preparation and application of a self-assembly-based porphyrin / alumina composite nano-channel film and belongs to the technical field of nanometer materials. The preparation method comprises the following steps: arranging a hourglass type alumina nano-channel film at a communication part of two tank bodies of self-made tanks so as to isolate electrolyte in the two tanks, wherein a TPPS (Tera(Sulfophenyl)Porphin) aqueous solution is filled in the tank on one side of the hourglass type alumina nano-channel film, and a sodium chloride aqueous solution is filled in the tankon the other side; simultaneously controlling modification time on the two sides, flushing with lots of ultrapure water after modification completion, and naturally airing, thereby obtaining the porphyrin / alumina composite nano-channel film. The porphyrin / alumina composite nano-channel film can be applied to ion transport and optical response. The preparation method disclosed by the invention hasthe advantages of being time-saving, easy to operate, low in cost and the like. A novel way for preparing the composite nano-channel film based on self-assembly is developed.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and relates to a preparation and application method of a composite nanochannel, in particular to a preparation and application of a self-assembled porphyrin / alumina composite nanochannel. Background technique [0002] The biological cell membrane protein channel plays an important role in the normal life activities of the organism, and its special structure and function have attracted the attention of researchers at home and abroad. In recent years, studies have found that composite protein channels can be used in more complex systems than single protein channels, and can more precisely control the life activities of organisms. Inspired by biological channels, the properties of biological channels are copied into artificial nanodevices, and artificial nanochannels with different shapes and functions are prepared. With the advancement of science and technology and the improvement of human n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/24G01N27/26
Inventor 范霞张丹
Owner BEIHANG UNIV
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