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Preparation method and application of polydopamine/nano molybdenum disulfide photocatalyst

A technology of nano-molybdenum disulfide and molybdenum disulfide, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, chemical instruments and methods, etc., can solve the problem that the catalytic efficiency needs to be improved, the cost is high, the Drinker poisoning and other problems, to achieve the effect of improving photocatalytic effect, good visible light absorption, good catalytic reduction effect

Active Publication Date: 2018-11-16
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The oral lethal dose of hexavalent chromium compounds is about 1.5g. If the hexavalent chromium content in water exceeds 0.1mg / L, the drinker will be poisoned, and long-term or short-term exposure or inhalation will cause cancer risk.
[0005] Although the molybdenum disulfide-antimony sulfide composite material has a catalytic effect, the catalytic efficiency of the molybdenum disulfide-antimony sulfide composite material needs to be improved, the operation is complicated, and the cost is high

Method used

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  • Preparation method and application of polydopamine/nano molybdenum disulfide photocatalyst

Examples

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Embodiment 1

[0034] The preparation method of polydopamine / nanometer molybdenum disulfide photocatalyst in the present embodiment is as follows:

[0035] 1. Preparation of lamellar molybdenum disulfide

[0036] Add 1g of molybdenum disulfide powder into a three-necked flask, then add 10mL of n-butyllithium, stir for three days under a nitrogen atmosphere, filter after the reaction is completed, wash with 100mL of n-hexane for three times, and put the product obtained by suction filtration into a constant temperature at 60°C Dry in a drying oven for 4 hours, dissolve the dried powder in 250 mL of deionized water, disperse ultrasonically for 12 hours, and then freeze-dry at -50°C for 24 hours to obtain lamellar molybdenum disulfide;

[0037] 2. Preparation of aminated molybdenum disulfide

[0038] Disperse 0.7g of lamellar molybdenum disulfide in 200mL of deionized water, add 4mg of mercaptoethylamine, ultrasonically disperse for 48 hours, then freeze-dry at -50°C for 24 hours, wash with de...

Embodiment 2

[0043] The preparation of this example Guo Chen communicated with Example 1, the difference is that the mass of dopamine is 10% of the mass of aminated molybdenum disulfide, and the obtained polydopamine / nanomolybdenum disulfide photocatalyst is recorded as PDA / MoS 2 -NH 2 -10 wt%.

Embodiment 3

[0045] Preparation of this example Guo Chen communicated with Example 1, the difference is that the mass of dopamine is 20% of the mass of aminated molybdenum disulfide, and the obtained polydopamine / nanomolybdenum disulfide photocatalyst is recorded as PDA / MoS 2 -NH 2 -20 wt%.

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Abstract

The invention discloses a preparation method and application of a polydopamine / nano molybdenum disulfide photocatalyst. The preparation method comprises the following steps: first, preparing molybdenum disulfide nano-sheets by a lithium ion intercalation method; then adding mercaptoethylamine for modification to obtain aminated molybdenum disulfide; then introducing a dopamine monomer into the reaction system to mix uniformly with the aminated molybdenum disulfide; and finally, synthesizing a polydopamine / nano molybdenum disulfide composite by self-condensation of dopamine on the surface of the aminated molybdenum disulfide. Due to the introduction of polydopamine into the composite catalyst prepared by the method provided by the invention, the photocatalytic performance of the composite catalyst is greatly improved.

Description

technical field [0001] The invention relates to a method for preparing a catalyst, in particular to a method for preparing a polydopamine / nanometer molybdenum disulfide photocatalyst and its application, belonging to the field of catalysts. Background technique [0002] Hexavalent chromium is a toxic compound, which may cause allergies by skin contact, and may cause cancer by inhalation. It has persistent harm to the environment and has been identified as one of the 17 highly dangerous toxic substances by the US Environmental Protection Agency. Hexavalent chromium ions are highly soluble and mobile in water and are not biodegradable. Hexavalent chromium is easily absorbed by the human body and can invade the body through digestion, breathing, skin and mucous membranes. The lethal dose of hexavalent chromium compound is about 1.5g orally. If the hexavalent chromium content in water exceeds 0.1mg / L, the drinker will be poisoned, and long-term or short-term exposure or inhalat...

Claims

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Application Information

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IPC IPC(8): B01J31/34C02F1/30C02F1/70C02F101/22
CPCC02F1/30C02F1/70B01J31/34C02F2101/22C02F2305/10B01J35/39
Inventor 周艺峰汪康陈鹏鹏聂王焰徐颖
Owner ANHUI UNIVERSITY
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