A conductive polymer/mos 2 Preparation method and application of composite multilayer film

A conductive polymer, composite multilayer film technology, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., to achieve a simple preparation process and improve hydrogen production efficiency. Effect

Active Publication Date: 2021-08-24
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problem of interfacial immobilization of electrocatalysts in the prior art, the present invention provides a conductive polymer / MoS 2 Preparation method of composite multilayer film, the method uses conductive polymer and MoS 2 Nanosheets are used as assembly units, and ITO is used as the base material, and conductive polymer layers and MoS are alternately formed on the surface of the base material through electrostatic attraction. 2 Layer-by-layer self-assembly, preparation of conductive polymer / MoS by layer-by-layer self-assembly 2 Composite multilayer film, this method can microscopically regulate the hydrogen production efficiency of the composite film, the preparation process of the present invention is simple, and the composite catalytic structure can be prepared repeatedly on a large scale, and the composite catalytic film can be recycled, which is the key to saving and environmental protection

Method used

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  • A conductive polymer/mos <sub>2</sub> Preparation method and application of composite multilayer film
  • A conductive polymer/mos <sub>2</sub> Preparation method and application of composite multilayer film
  • A conductive polymer/mos <sub>2</sub> Preparation method and application of composite multilayer film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Conductive polymer / MOS 2 Preparation method of composite multilayer film, including the following steps:

[0036] 1) Disperse PANI in dimethylformamide, a dispersion of 10 mg / ml, stirred overnight, and then ultrasonically treated 10 h; the obtained mixed uniform dispersion is centrifuged at 5500 rpm to centrifuge for 15 min, and the upper layer solution is taken; The upper solution was diluted with pH 3.0 HCl, and then the pH value of the solution after the dilution solution was adjusted with 1.0 M HCl. The formulated solution needs to be used within one day to avoid agglomeration. The PPY solution is prepared, weighing 16 mg of PPY in an 80 mL of aqueous solution, configured to disperse 0.2 mg / ml, ultrasonic 2h, stirred overnight.

[0037] 2) Press MOS 2 : SC = 5: 3 (mass ratio) Weigh MOS 2 Take 200mg MOS and SC 2 120mg SC, add 150ml tapered bottle, add 150 ml of ultra-pure water, mix well, ultrasonic 10h, super cell pulveration 30 min; obtained 3000 rpm to centrifug...

Embodiment 2

[0043] Conductive polymer / MOS 2 The preparation method of the composite multilayer film, the operation step and the raw material material of the present embodiment are substantially the same as in Example 1, and the difference is:

[0044] Step 3) In: Take the carbon cloth (CC) as a substrate, cut it into 1 × 4 cm 2 The size is arranged in ethanol in ethanol for 20-30 min, and then the carbon is placed in distilled water for 20-30 min.

[0045] In step 4): Take the processed CC in a PANI solution (or PPY solution) mixed with a 1000 rpm rotational speed, washed distilled water, and the nitrogen is blown; and then immersed in MOS stirred at 1000 rpm. 2 10-20 min in the dispersion.

[0046] Step 5): Alternate CC to alternately immerse the PANI solution (or PPY solution) and MOS 2 Dispersion, total repeat 16 times to obtain conductive polymer / MOS 2 Self-assembled multilayer film - (PANI / MOS 2 ) 16 -CC or (PPY / MOS 2 ) 16 -CC.

Embodiment 3

[0048] The number of different assembly layers (N = 3-30) obtained in Example 1 (Conductive Polymer / MOS) 2 ) n -Ito and Example 2 (PANI / MOS) 2 ) 16 -CC or (PPY / MOS 2 ) 16 -CC sample, electrochemically produced hydrogen production test, the resulting polarization curve is like figure 2 with Figure 3 Indicated. Electrocatalytic hydrogen production test uses a three-electrode system, a counter electrode (Pt slice / carbon rod), a reference electrode ((N = 3-30) ((N = 3-30) ((N = 3-30) (Conductive Polymer / MOS) 2 ) n -Ito and (PANI / MOS) 2 ) 16 -CC or (PPY / MOS 2 ) 16 -CC sample), the electrolyte is 0.5m h 2 SO 4 , Relative to standard hydrogen electrodes (RHE) voltage: e (rhe) = e (Ag / AGCL) +0.2 V. The hydrogenation polarization curve of the electrochemical catalyst is linearly scanned, the scan rate is 5 mV / s, the scan range is -0.45-0V (vs.rhe).

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Abstract

The present invention generally relates to the technical field of preparation of organic / inorganic composite thin film materials, and provides a conductive polymer / MoS 2 Preparation method of composite multilayer film, exfoliated MoS with conductive polymer and sodium deoxycholate 2 Nanosheets are assembled units, and the conductive polymer layers and MoS are alternately formed on the surface of the substrate material by electrostatic adsorption. 2 layer self-assembly, fabrication (conducting polymer / MoS 2 ) n Composite thin films where n is conducting polymer / MoS 2 The number of layers of the film on the base material, n is an integer between 3 and 30, and the conductive polymer is polyaniline or polypyrrole. The method of the invention has a simple preparation process, can solve the important problem of electrocatalyst interface fixation in the practical application of electrocatalytic materials, and is the key to large-scale, repeated preparation, recycling and environmental protection. In addition, the substrate material is converted into a flexible porous substrate carbon cloth with superior electrical conductivity, thereby further improving the hydrogen production performance of the composite thin-film electrocatalytic material.

Description

Technical field [0001] The present invention relates generally to an organic / inorganic composite film was prepared BACKGROUND material, particularly relates to an electrically conductive polymer / MoS 2 Preparation and application of the composite multilayer film. Background technique [0002] Modern steady social and economic progress and development of the traditional energy materials (such as coal, oil, etc.) become increasingly scarce, and therefore, people gradually change the traditional energy structure, put in more effort to explore the development of new energy sources. In addition, the world is facing serious environmental challenge, the new environmentally friendly and sustainable energy has become one goal. In the exploration of new energy, H 2 Has a high energy density and zero carbon emissions characteristics, become an important part of green energy mix, it is touted as a future ideal energy carrier. Now hydrogen research methods are mainly electro-catalytic hydr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/06B01J31/34C25B1/04C25B11/095
CPCB01J31/06B01J31/34B01J35/0033B01J2231/60B01J2231/70C25B1/04Y02E60/36
Inventor 张以河许立男安琪
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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