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a kind of ni/nio/ni 3 the s 2 Catalyst and its preparation method and application

A catalyst, sodium hydroxide technology, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as rare literature reports of organic dyes, and achieve improved photocatalytic properties, simple preparation methods, good crystallinity

Active Publication Date: 2022-02-11
QUFU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] So far, although NiO, Ni 3 S 2 , Ni composites have made some progress, but a simple and rapid method to prepare three-phase Ni / NiO / Ni with special morphology 3 S 2 Composite materials, and the research on photocatalytic degradation of organic dyes is still rarely reported in the literature

Method used

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  • a kind of ni/nio/ni <sub>3</sub> the s <sub>2</sub> Catalyst and its preparation method and application
  • a kind of ni/nio/ni <sub>3</sub> the s <sub>2</sub> Catalyst and its preparation method and application
  • a kind of ni/nio/ni <sub>3</sub> the s <sub>2</sub> Catalyst and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Embodiment 1, a kind of Ni / NiO / Ni 3 S 2 The preparation method of nanometer catalyst comprises steps as follows:

[0067] (1) Measure 0.7mL oleic acid in a mortar, add 0.2908g (10mmol) nickel nitrate hexahydrate and 0.1200g (30mmol) sodium hydroxide in sequence, and grind until fully reacted; repeat the above steps for a total of 10 times, grind After 1.5 h, a green solid was obtained.

[0068] Total consumption in step (1): oleic acid is 7mL, nickel nitrate hexahydrate is 2.9081g, sodium hydroxide is 1.2001g, and the molar ratio of nickel nitrate hexahydrate and sodium hydroxide=1:3.

[0069] (2) Add 65 mL of deionized water to the green solid obtained in step (1), stir well, transfer to the reaction kettle, and react at 180°C for 8 hours; the obtained precipitate is washed alternately with ethanol and deionized water for 5 The second time, after drying at 80°C for 24h, it was fired in a muffle furnace at 500°C for 2h to obtain Ni / NiO powder.

[0070] The Ni / NiO pr...

Embodiment 2

[0077] Embodiment 2, Ni / NiO / Ni prepared by the method described in embodiment 1 3 S 2 Catalyst, experimental step (1) and experimental step (2) remain unchanged, the Ni / NiO powder quality that the step (2) that takes in experimental step (3) makes constant, promptly fixed mass is 0.1074g, other physical quantities no change. The differences are:

[0078] In step (3), respectively weigh 0.1074g of Ni / NiO powder and 0.1074g of sodium sulfide nonahydrate (the mass ratio of Ni / NiO to sodium sulfide nonahydrate=1:1) prepared in step (2), add 30mL of ionized water, stirred for 15min, then ultrasonically dispersed for 1h, and the mixed solution was transferred to a microwave instrument for 60min; the filtered precipitate was washed alternately with ethanol and deionized water for 3 times, and dried at 80°C for 24h to obtain Ni / NiO / Ni 3 S 2 Powder.

[0079] The Ni / NiO / Ni that embodiment 2 prepares 3 S 2 The composite material is composed of nanoparticles with a diameter of 10nm...

Embodiment 3

[0081] Embodiment 3, Ni / NiO / Ni prepared by the method described in embodiment 1 3 S 2 Catalyst, experimental step (1) and experimental step (2) remain unchanged, the Ni / NiO powder quality that the step (2) that takes in experimental step (3) makes constant, promptly fixed mass is 0.1074g, other physical quantities no change. The differences are:

[0082] In step (3), respectively weigh 0.1074g of Ni / NiO powder and 0.2148g of sodium sulfide nonahydrate (the mass ratio of Ni / NiO to sodium sulfide nonahydrate=1:2) prepared in step (2), add to Ionized water 40mL, stirred for 15min, and then ultrasonically dispersed for 2h, the mixed solution was transferred to a microwave instrument for 80min reaction; the filtered precipitate was washed alternately with ethanol and deionized water for 5 times, and dried at 80°C for 24h to obtain Ni / NiO / Ni 3 S 2 Powder.

[0083] The Ni / NiO / Ni that embodiment 3 prepares 3 S 2 The composite material is composed of nanoparticles with a diamete...

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Abstract

The present invention relates to a kind of Ni / NiO / Ni 3 S 2 Catalyst and its preparation method and application. Nickel nitrate and sodium hydroxide were uniformly dispersed in oleic acid, and after grinding and further hydrothermal treatment, hexagonal Ni / NiO was prepared; then the prepared hexagonal Ni / NiO was subjected to rapid microwave vulcanization treatment to obtain nano Ni / NiO / Ni composed of particles and nanorods 3 S 2 composite material. The Ni / NiO / Ni that the present invention makes 3 S 2 The composite material has good photocatalytic properties and can be used as a photocatalyst for the degradation of organic dye methyl violet. The preparation method of the invention is simple, the cost is low, and it can be produced in batches.

Description

technical field [0001] The invention relates to a Ni / NiO / Ni for photocatalytic degradation of organic dyes 3 S 2 A catalyst and a preparation method thereof belong to the technical field of nanometer catalyst materials. Background technique [0002] Semiconductor photocatalysis is an effective method for chemical utilization of solar energy, and has been widely used in environmental purification and solar energy conversion. When a single-component semiconductor material is used as a photocatalyst, its application is limited due to the large energy band gap and low light utilization efficiency. An effective way to solve this problem is to form a two-phase or three-phase composite material with another semiconductor material and / or metal with a smaller energy bandgap, so as to improve the photoelectric and catalytic properties of the composite material. [0003] Nickel oxide (NiO) is a wide bandgap semiconductor material, which is often used to prepare nickel salts, ceramic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/043B01J37/00B01J37/10B01J37/34C02F1/32C02F101/30
CPCB01J27/043B01J37/0036B01J37/10B01J37/346C02F1/32C02F2305/10C02F2101/308B01J35/39
Inventor 景志红潘红梅
Owner QUFU NORMAL UNIV
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