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Molybdenum-based composite material prepared from microwave sparks as well as method and application thereof

A composite material, molybdenum-based technology, applied in chemical instruments and methods, electrodes, electrolysis process, etc., can solve problems such as rising temperature, achieve the effects of simplifying the preparation process, excellent catalytic activity, and improving the performance of electrocatalytic hydrogen production

Active Publication Date: 2020-08-07
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in uniform heating of the entire sample volume and rapid temperature rise, whereas conventional heating is limited by thermal conductivity

Method used

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  • Molybdenum-based composite material prepared from microwave sparks as well as method and application thereof
  • Molybdenum-based composite material prepared from microwave sparks as well as method and application thereof
  • Molybdenum-based composite material prepared from microwave sparks as well as method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1 molybdenum-based composite material (being Mo-Mo 2 C-MoO 2 -CNT) preparation

[0047] A method for preparing molybdenum-based composite materials using microwave sparks, the specific preparation process is as follows:

[0048] (1) 0.025g nitrated CNT, 0.036g glucose, 0.6gMoCl 5 Place in a glass vial, drop 50d of cyclohexane, and use ultrasonic to mix evenly; after ultrasonic for 30min, dry in a vacuum oven at 85°C for 11h to obtain a powdery solid, place in a quartz vial, cover with a headspace cap, and pass Argon was used as protective gas.

[0049] (2) Then put it into a household microwave oven (frequency is 2.45GHz), microwave at a power of 700W, put it in a ventilated place for one minute in each microwave; Argon exhausts other gases to replace the gas in the bottle, and microwaves for ten minutes to obtain Mo-Mo 2 C-MoO 2 -CNT molybdenum-based composites (such as figure 1 shown in b).

[0050] Wherein, after XRD quantitative analysis, it is fo...

Embodiment 2

[0102] Example 2Mo-Mo 2 C-MoO 2 - Preparation of CNTs

[0103] Concrete preparation process is as follows:

[0104] (1) 0.05g nitrated CNT, 0.036g glucose, 0.6gMoCl 5 Place in a glass vial, drop 50d of n-hexane, and mix evenly with ultrasonic waves; after ultrasonication for 30 min, dry in a vacuum oven at 85°C for 11 h to obtain a powdery solid, place in a quartz vial, cover with a headspace cap, and pass through Argon was used as the shielding gas.

[0105] (2) Remaining steps are the same as in Example 1.

[0106] XRD analysis results show that molybdenum is composed of simple Mo, Mo 2 C. MoO 2 Forms co-exist, get Mo-Mo 2 C-MoO 2 -CNT molybdenum-based composite material.

Embodiment 3

[0107] Example 3Mo-Mo 2 C-MoO 2 - Preparation of GO

[0108] Concrete preparation process is as follows:

[0109] (1) 0.05g nitrated graphene oxide (GO), 0.036g glucose, 0.6gMoCl 5 Place in a glass vial, drop into 50d cyclohexane, and use ultrasonic to mix evenly; ultrasonic for 30min;

[0110] (2) Remaining steps are the same as in Example 1.

[0111] XRD analysis results show that molybdenum is composed of simple Mo, Mo 2 C. MoO 2 Forms co-exist, get Mo-Mo 2 C-MoO 2 -GO molybdenum-based composites.

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Abstract

The invention discloses a molybdenum-based composite material prepared from microwave sparks as well as a method and application thereof. The method comprises the following steps: dissolving a molybdenum source and a carbon source in an organic solvent, and uniformly mixing solutions by ultrasonic treatment; after the ultrasonic treatment is finished, drying in an inert atmosphere to obtain a powdery solid, wherein the molybdenum source is molybdenum pentachloride, the carbon source consists of glucose and nano carbon subjected to nitrification treatment in a mass ratio of 1: (1-3), and the organic solvent is cyclohexane or normal hexane; and carrying out microwave treatment on the powdery solid in an argon inert atmosphere to obtain the molybdenum-based composite material. According to the invention, Molybdenum pentachloride is adopted as a molybdenum source, nanocarbon and glucose subjected to nitrification treatment are adopted as carbon sources, and a quaternary molybdenum-based composite material is obtained in cooperation with a microwave treatment means; the material not only contains Mo2C, MoO2 and nanocarbon, but also contains simple substance Mo, so that the electro-catalytic hydrogen production performance of the molybdenum-based composite material serving as an electro-catalytic hydrogen production catalyst is effectively improved.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a method and application for preparing a molybdenum-based composite material by utilizing microwave sparks. Background technique [0002] In today's world, problems such as energy depletion, air pollution, and greenhouse gas emissions have been plaguing mankind, and have prompted mankind to explore and utilize clean and renewable energy. Among them, hydrogen energy is a clean, efficient, safe, and sustainable new energy source; however, hydrogen energy is a secondary energy source, and hydrogen production technology has become one of the core issues of hydrogen energy utilization. Among many hydrogen production technologies, electrochemical water splitting technology (water splitting into hydrogen and oxygen) has good development prospects, and the preparation of high-efficiency catalysts for electrocatalytic hydrogen production (HER) in the cathode part has become a key techno...

Claims

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Application Information

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IPC IPC(8): B01J27/22B22F9/20C25B1/04C25B11/06
CPCB01J27/22B22F9/20C25B1/04C25B11/091Y02E60/36
Inventor 李雷胡春玲宋利王杨燕王紫琪
Owner JIAXING UNIV
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