Hydrangea-like zinc oxide@copper sulfide and preparation method thereof

A hydrangea and zinc oxide technology, applied in the direction of zinc oxide/zinc hydroxide, copper sulfide, etc., can solve the problems of less appearance, harsh reaction conditions, and complicated operation steps, and achieve the effect of uniform size and regular appearance

Inactive Publication Date: 2019-10-18
SHAANXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still problems in the preparation methods of the two composites in the existing literature, such as complicated operation steps and harsh reaction conditions, which are not conducive to the large-scale preparation of composite particles.
In addition, the com

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  • Hydrangea-like zinc oxide@copper sulfide and preparation method thereof
  • Hydrangea-like zinc oxide@copper sulfide and preparation method thereof
  • Hydrangea-like zinc oxide@copper sulfide and preparation method thereof

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preparation example Construction

[0032] A method for preparing hydrangea-shaped zinc oxide@copper sulfide, comprising the following steps:

[0033] Step 1: Dissolve the zinc source and sodium citrate in deionized water at room temperature, and stir to form a colorless and transparent solution; then, add 60-80 mL of aqueous sodium hydroxide solution to make the pH of the system to 11-13, After forming a uniform milky white solution, stir and react at room temperature for 2-4 hours, centrifuge and dry to obtain hydrangea-shaped zinc oxide. The ratio of zinc source, sodium citrate and deionized water is (5.0-7.0) mmoL: (7.0-21.0) mmoL: (55-65) mL.

[0034] Step 2: ultrasonically disperse the hydrangea-shaped zinc oxide prepared in step 1 in isopropanol to form a stable suspension; then, add an aqueous solution of sodium sulfide nonahydrate to the suspension and stir at room temperature for 2 to 4 hours; Finally, add the isopropanol solution of copper chloride dihydrate into the system and continue to stir and r...

Embodiment 1

[0042]Step 1: at room temperature, dissolve 6.0mmoL of zinc acetate dihydrate and 15mmoL of sodium citrate in 55mL of deionized water, stir to form a colorless and transparent solution; then, add 72mL of sodium hydroxide aqueous solution (concentration 0.7 mol / L) to make the pH of the system to 11, form a uniform milky white solution, stir and react at room temperature for 2 hours, centrifuge, and dry to obtain hydrangea-shaped zinc oxide.

[0043] Step 2: ultrasonically disperse 0.3 g of hydrangea-shaped zinc oxide prepared in step 1 in 50 mL of isopropanol (ultrasonic power is 300 W, ultrasonic frequency is 45 KHz), and after 10 min, it is formed into a stable suspension; then, the 50mL of sodium sulfide nonahydrate aqueous solution (concentration: 0.05mol / L) was added to the suspension and stirred at room temperature for 2h; finally, 54mL isopropanol solution of copper chloride dihydrate (concentration: 0.05mol / L) was added to the system Continue to stir and react at room t...

Embodiment 2

[0047] Step 1: at room temperature, dissolve 5.0mmoL of zinc acetate dihydrate and 7.0mmoL of sodium citrate in 60mL of deionized water, stir to form a colorless and transparent solution; then, add 75mL of aqueous sodium hydroxide ( The concentration is 0.6 mol / L) to bring the pH value of the system to 12, form a uniform milky white solution, stir and react at room temperature for 2 hours, centrifuge and dry to obtain hydrangea-shaped zinc oxide.

[0048] Step 2: ultrasonically disperse 0.2 g of the hydrangea-like zinc oxide prepared in step 1 in 40 mL of isopropanol (ultrasonic power is 250 W, ultrasonic frequency is 50 KHz), and after 15 min, it is formed into a stable suspension; then, the 52mL aqueous solution of sodium sulfide nonahydrate (concentration: 0.03mol / L) was added to the suspension and stirred at room temperature for 3 hours; finally, 50mL isopropanol solution of copper chloride dihydrate (concentration: 0.045mol / L) was added to the system to continue Stir and ...

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Abstract

The invention provides a hydrangea-like zinc oxide@copper sulfide and a preparation method thereof. The preparation method comprises the following steps that step 1, a zinc source and sodium citrate are dissolved in water at room temperature, the mixture is stirred to form a colorless transparent solution; and then a sodium hydroxide aqueous solution is added to adjust to a pH value to be 11-13, auniform milky white solution is formed, and the mixture is stirred for reaction at room temperature, and the product is centrifuged and dried to obtain the hydrangea-like zinc oxide; and step 2, thehydrangea-like zinc oxide prepared in the step 1 is dispersed in isopropyl alcohol, a stable suspension is formed, then, an aqueous solution of sodium sulfide nonahydrate is added to the suspension, the mixture is stirred for reaction at room temperature to obtain a system A, finally an isopropanol solution of copper chloride dihydrate is added to the system A, the mixture is stirred for reactionat room temperature, and the mixture is centrifuged and dried to obtain the hydrangea-like zinc oxide@copper sulfide. The operation is simple and the reaction conditions are mild. The prepared zinc oxide@copper sulfide is a hydrangea-like morphology, and is expected to be applied to visible light catalysis, photothermal diagnosis and superhydrophobic coating.

Description

technical field [0001] The invention relates to a preparation method of an inorganic nanocomposite material, in particular to a hydrangea-shaped zinc oxide@copper sulfide and a preparation method thereof. Background technique [0002] Compared with conventional materials, nanomaterials exhibit many special properties due to small size effects, quantum effects, surface effects, etc., so they have broad application prospects in catalysis, biology, energy, and medical treatment. At present, researchers have prepared a series of nanomaterials, such as TiO 2 , CuO, ZnO, SiO 2 、Co 3 o 4 , NiO, etc. Among them, nano-ZnO is a semiconductor material with a band gap of 3.37eV and an exciton binding energy as high as 60meV. It has excellent electrical, optical, mechanical properties and chemical stability. The research enthusiasm of nano-CuS is no less than that of nano-ZnO. It is a new type of semiconductor material with rapid development. It has good visible light absorption eff...

Claims

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Application Information

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IPC IPC(8): C01G9/02C01G3/12
CPCC01G3/12C01G9/02C01P2002/72C01P2002/84C01P2004/03C01P2004/30
Inventor 鲍艳高璐史秀娟张文博刘超
Owner SHAANXI UNIV OF SCI & TECH
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