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H-molybdenum trioxide/bis-metal sulfide composite material, preparation method and application

A metal sulfide and molybdenum trioxide technology, applied in chemical instruments and methods, chemical/physical processes, special compound water treatment, etc., can solve the problems of no catalytic activity, low atomic ratio, poor conductivity, etc., and achieve low cost , increase the atomic ratio, improve the effect of electrical conductivity

Active Publication Date: 2020-01-14
NEIJIANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Thermodynamically stable 2H-MoS 2 (hexagonal system) as a photoelectric catalyst, its catalytic activity comes from the unsaturated bonding atoms at the edge, while the in-plane atoms do not have catalytic activity, which makes the proportion of atoms that can contribute to the catalytic activity extremely low, which seriously restricts the MoS 2 Catalytic activity
In addition, the poor electrical conductivity also affects the 2H-MoS 2 One of the key factors for the photoelectrocatalytic activity of semiconductors

Method used

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  • H-molybdenum trioxide/bis-metal sulfide composite material, preparation method and application
  • H-molybdenum trioxide/bis-metal sulfide composite material, preparation method and application
  • H-molybdenum trioxide/bis-metal sulfide composite material, preparation method and application

Examples

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Effect test

Embodiment 1

[0041] A preparation method of h-molybdenum trioxide / bimetallic sulfide composite material, comprising the following steps:

[0042] S1. Add 1.7g of sodium molybdate dihydrate to 195mL of water, ultrasonically dissolve, then add 5mL of concentrated nitric acid dropwise, stir and react for 1h at 30°C, then put the solution into the reaction kettle, and put the solution under the condition of 90°C , carry out hydrothermal reaction for 1 h, cool, filter, wash the precipitate twice with water and ethanol respectively, and dry to obtain h-MoO 3 ;

[0043]S2, 1g h-MoO 3 Add it to 40mL zinc nitrate solution with a concentration of 30.76mmol / L, carry out adsorption reaction at 25°C for 2 hours, filter, wash the precipitate, and dry it to obtain the initial product;

[0044] S3, the initial product is placed in the plasma exchange, and the gas flow rate is 25mL / min, and the volume ratio is 1:9 H 2 The mixed gas of S and argon for 15 minutes, after removing the air in the pipeline, c...

Embodiment 2

[0052] In the present embodiment, except that the zinc nitrate solution that concentration is 30.76mmol / L is replaced with concentration is that 33.90mmol / L nickel nitrate solution, all the other are identical with embodiment 1.

[0053] The h-molybdenum trioxide / bimetallic sulfide composite material obtained in this example is h-MoO 3 / 2H-MoS 2 -NiS material.

Embodiment 3

[0055] In this example, except that the zinc nitrate solution with a concentration of 30.76mmol / L was replaced with a copper sulfate solution with a concentration of 26.23mmol / L, the rest were the same as in Example 1.

[0056] The h-molybdenum trioxide / bimetallic sulfide composite material obtained in this example is h-MoO 3 / 2H-MoS 2 -CuS material.

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Abstract

The invention discloses an h-molybdenum trioxide / bis-metal sulfide composite material, a preparation method and an application, and belongs to the technical field of photo-catalytic composite materials. The h-molybdenum trioxide / bis-metal sulfide composite material is composed of hexagonal prism-like molybdenum trioxide, namely h-MoO3, and two metal sulfides, wherein one metal sulfide is 2H-molybdenum disulfide, namely 2H-MoS2, and the other metal sulfide is zinc sulfide, nickel sulfide, gallium sulfide, or copper sulfide. The h-molybdenum trioxide / bis-metal sulfide composite material has readily available raw materials, low cost, and simple preparation process, and has great industrial application values as a photo-catalytic composite material in a wastewater treatment process.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic composite materials, and in particular relates to an h-molybdenum trioxide / bimetallic sulfide composite material, a preparation method and an application. Background technique [0002] Pollutants in water include organic pollutants and inorganic pollutants. Organic pollutants mainly include oxygen-consuming non-toxic organic substances (such as protein, fat and carbohydrates, etc.) and toxic organic substances (such as phenolic compounds, organic pesticides and polycyclic aromatic hydrocarbons, dyes and food additives, etc.). Inorganic pollutants mainly include heavy metal ions such as lead, chromium, platinum, mercury and copper. Among them, chromium ion, namely Cr(VI), is more easily absorbed by the human body, and accumulates in the human body, which is more toxic, even has a lethal effect on aquatic organisms, and cannot be decomposed by microorganisms. It is listed as one of the most ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051C02F1/30C02F101/22
CPCB01J27/051B01J27/0515C02F1/30C02F2101/22C02F2305/10B01J35/39
Inventor 郑小刚黄志平黄从英欧喻婷刘婷婷
Owner NEIJIANG NORMAL UNIV
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