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A kind of molybdenum disulfide/gold/nitrogen-doped carbon nanotube composite and its preparation method and application

A complex and nanotechnology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of catalytic performance to be improved, and achieve good adsorption effect and excellent electrical conductivity

Active Publication Date: 2020-08-14
BEIJING NORMAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] NeS 2 、CoS 2 、MoS 2 Transition metal sulfides such as transition metal sulfides have a certain catalytic activity for HER, and have attracted the attention of researchers because of their low price and easy availability, but their catalytic performance needs to be improved.

Method used

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  • A kind of molybdenum disulfide/gold/nitrogen-doped carbon nanotube composite and its preparation method and application
  • A kind of molybdenum disulfide/gold/nitrogen-doped carbon nanotube composite and its preparation method and application
  • A kind of molybdenum disulfide/gold/nitrogen-doped carbon nanotube composite and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] This embodiment provides a (Ppy)-MoS 4 , prepared by the following method:

[0053] (1) Nanotubular NO 3 - Synthesis of Ppy

[0054] Weigh 1.937g (4.8mmol) Fe(NO 3 ) 3 9H 2 O, 0.262g (0.8mmol) methyl orange (MO), dissolved in 160ml of deionized water, stirred for 0.5h, added 0.28ml of pyrrole, stirred in an ice-water bath for 4h, washed and dried to obtain a black solid, that is, nanotubular NO 3 -Ppy;

[0055] (2) Synthesis of (Ppy)-MoS by ion exchange method 4

[0056] Synthesis of (Ppy)-MoS by Ion Exchange Method 4 . Add 0.15g NO 3 -Ppy, add 5ml of water, and ultrasonically obtain a dispersion. Another 0.45g (NH 4 ) 2 MoS 4 Add 10ml of water, ultrasonically dissolve it fully, then add dropwise to the above NO 3 -Py dispersion liquid, stirred, and reacted at room temperature for 72h. Stirring, the system gradually changed from black to brown. Suction filtration, and washing with a large amount of water and ethanol until the filtrate is colorless, a bl...

Embodiment 2

[0058] This embodiment provides a (Ppy)-MoS 4 , Compared with Example 1, the difference is only: in step (1), the consumption of methyl orange is 0.5mmol.

Embodiment 3

[0060] This embodiment provides a (Ppy)-MoS 4 , Compared with Example 1, the difference is only in that: in step (1), no ice-water bath is used, and the reaction is directly carried out at room temperature.

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Abstract

The invention relates to a molybdenum disulfide / gold / nitrogen-doped carbon nanotube composite and its preparation method and application. The preparation method includes: (Ppy)-MoS 4 Put it into the water body, shake for 2-5 hours, centrifuge after the adsorption is completed to obtain the adsorption product, and obtain the adsorption product by calcining; wherein the water body contains Au(III); the (Ppy)-MoS 4 Produced by the following method: nanotubular NO 3 ‑Ppy was prepared as a dispersion in water by adding (NH 4 ) 2 MoS 4 Add dropwise to the dispersion, react for 60-80 hours, stir, suction filter, wash with water and ethanol until the filtrate is colorless, and dry to obtain; elemental Au obtained from polypyrrole adsorbed gold ion solution and N-doped obtained from Ppy calcination Carbon nanotubes’ conductivity will compensate for MoS 2 Defect of insufficient electrical conductivity.

Description

technical field [0001] The invention relates to the technical field of electrocatalysts, in particular to a molybdenum disulfide / gold / nitrogen-doped carbon nanotube composite and its preparation method and application. Background technique [0002] In the context of the increasingly serious energy crisis, the development of new energy storage materials has attracted people's attention. Hydrogen is considered to be the most promising clean energy that can replace fossil energy. Hydrogen energy can be obtained directly through the hydrogen evolution reaction (abbreviated as HER) of electrolyzed water, and the HER process requires a high overpotential. Suitable electrocatalysts can significantly reduce this overpotential and realize industrial applications. So far, noble metals represented by platinum (Pt) are still the most powerful electrocatalysts. However, precious metal resources are scarce, expensive, and the production cost is high, which limits its industrialization. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J27/24B01J35/00B01J37/00B01J37/08B01J37/30B01J20/30C02F1/28C02F1/70C02F101/20
CPCB01J27/24B01J37/0018B01J37/30B01J37/082B01J20/265B01J20/0266B01J20/0218C02F1/28C02F1/70C02F2101/20B01J35/33
Inventor 马淑兰杨燕史可人王惠
Owner BEIJING NORMAL UNIVERSITY
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