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Composite nano material as well as preparation method and application thereof

A composite nanomaterial and nanosheet technology, applied in the field of materials, can solve the problems of poor product uniformity, poor treatment effect, low catalytic activity, etc., and achieve the effects of simple steps, uniform and controllable morphology, and high catalytic activity.

Pending Publication Date: 2022-07-22
广东省科学院生物与医学工程研究所
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Chinese patent CN107538017A discloses a method for preparing a metal-molybdenum disulfide composite structure by reduction of photogenerated electrons. The method prepares a metal-molybdenum disulfide composite structure by reducing metal cations induced by a femtosecond laser. Expensive, the reduction time is long, the product uniformity is poor, and the metal reduction needs to be continuously moved by moving the spot, so the solution cannot completely react or there are parts of the solution that are repeatedly irradiated by the laser to cause by-products to exist
[0004] In addition, although molybdenum disulfide-noble metal composite nanomaterials have important applications in biosensing, antibacterial, cancer treatment, and colorimetric catalysis, the existing molybdenum disulfide-noble metal composite nanomaterials have poor therapeutic effects and catalytic effects. Therefore, it is necessary to develop a new molybdenum disulfide-noble metal composite nanomaterial

Method used

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  • Composite nano material as well as preparation method and application thereof
  • Composite nano material as well as preparation method and application thereof
  • Composite nano material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The preparation steps of the composite nanomaterials in this example are as follows:

[0050] 1) Configuration of the solution: Weigh 1.2358 g (1 mmol) of ammonium molybdate ((NH) 4 ) 6 Mo 7 O 24 ·4H 2 O) and 2.2836 g (30 mmol) thiourea (CH 4 N 2 S) in 35mL ultrapure water, strong magnetic stirring for 30min, obtained ammonium molybdate-thiourea mixed solution. Another weighed 0.176g ascorbic acid (C 6 H 8 O 6 , 97%) powder was added to 10 mL of ultrapure water and dissolved by ultrasonic to obtain 0.1 mol / L ascorbic acid solution. Weigh 1 g of chloroauric acid trihydrate (HAuCl 4 ·3H 2 O, Au23.5-23.8%) powder was added to 80 mL of ultrapure water and dissolved by ultrasonic to obtain 1%wt chloroauric acid solution. Take 1 mL of 1% wt chloroauric acid solution and dilute it with ultrapure water to 5 mL to obtain a 0.2% wt chloroauric acid solution.

[0051] 2) Preparation of flower-shaped molybdenum disulfide: the above-mentioned ammonium molybdate-thiourea...

Embodiment 2

[0054] The preparation steps of the composite nanomaterials in this example are as follows:

[0055] 1) Configuration of the solution: Weigh 1.2358 g (1 mmol) of ammonium molybdate ((NH) 4 ) 6 Mo 7 O 24 ·4H 2 O) and 2.2836 g (30 mmol) thiourea (CH 4 N 2 S) in 35mL ultrapure water, strong magnetic stirring for 30min, obtained ammonium molybdate-thiourea mixed solution. Another weighed 0.176g ascorbic acid (C 6 H 8 O 6 , 97%) powder was added to 10 mL of ultrapure water and dissolved by ultrasonic to obtain 0.1 mol / L ascorbic acid solution. Weigh 1g potassium tetrachloropalladate (K 2 PdCl 4 , Pd≥32.6) powder was added to 99 mL of ultrapure water and dissolved by ultrasonic to obtain 1wt% potassium tetrachloropalladate solution. Dilute 1 mL of 1 wt% potassium tetrachloropalladate solution to 5 mL with ultrapure water to obtain a 0.2 wt% potassium tetrachloropalladate solution.

[0056] 2) Preparation of flower-shaped molybdenum disulfide: the above-mentioned ammoniu...

Embodiment 3

[0059] The preparation steps of the composite nanomaterials in this example are as follows:

[0060] 1) Configuration of the solution: Weigh 1.2358 g (1 mmol) of ammonium molybdate ((NH) 4 ) 6 Mo 7 O 24 ·4H 2 O) and 2.2836 g (30 mmol) thiourea (CH 4 N 2 S) in 35mL ultrapure water, strong magnetic stirring for 30min, to obtain ammonium molybdate-thiourea mixed solution. Another weighed 0.176g ascorbic acid (C 6 H 8 O 6 , 97%) powder was added to 10 mL of ultrapure water and dissolved by ultrasonic to obtain 0.1 mol / L ascorbic acid solution. Weigh 1 g of chloroauric acid trihydrate (HAuCl 4 ·3H 2 O, Au23.5-23.8%) powder was added to 80 mL of ultrapure water and dissolved by ultrasonic to obtain 1wt% chloroauric acid solution. Dilute 1 mL of 1 wt% chloroauric acid solution with ultrapure water to 5 mL to obtain a 0.2 wt% chloroauric acid solution. Weigh 1g potassium tetrachloropalladate (K 2 PdCl 4 , Pd≥32.6) powder was added to 99 mL of ultrapure water and dissolv...

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Abstract

The invention discloses a composite nanomaterial as well as a preparation method and application thereof. The composite nanomaterial comprises noble metal nanoparticles and flower-shaped molybdenum disulfide nanosheets, the noble metal nanoparticles are loaded on the surfaces of the flower-shaped molybdenum disulfide nanosheets; the precious metal comprises at least one of gold, silver, palladium, platinum, iridium, ruthenium and rhodium. The composite nano material disclosed by the invention has the characteristics of stable physical and chemical properties, large specific surface area and high catalytic activity; a reducing agent is introduced through a metal in-situ growth method, flower-shaped molybdenum disulfide nanosheets react with the reducing agent and a precious metal source to synthesize the flower-shaped molybdenum disulfide-precious metal nanocomposite which is controllable in morphology and can be produced in batches, and the synthesis method has the advantages of being simple in step, efficient, rapid and capable of being produced in batches; the composite nano material can be applied to biosensing, antibiosis, cancer treatment and colorimetric catalysis.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a composite nanomaterial and a preparation method and application thereof. Background technique [0002] As a new type of graphene-like two-dimensional nanomaterials, transition metal sulfides have attracted great attention due to their unique optical, electrical, thermal, and catalytic properties. Among them, molybdenum disulfide, as a star material, has been widely used in the fields of optical detection, lithium batteries, biosensing, energy conversion and cancer treatment. However, with the pursuit of convenience, environmental protection, and health, the fields of optoelectronics, new energy, and biosensing have also put forward higher requirements for the performance of molybdenum disulfide nanomaterials. Single-function molybdenum disulfide has been completely Unable to meet the needs of applications, therefore, the development of composite multifunctional nanomateria...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/06B22F9/24B22F1/054B82Y5/00B82Y15/00B82Y40/00A61K33/242A61K33/38A61K33/243A61K33/24A61K47/02A61P35/00A61P31/04
CPCC01G39/06B22F9/24B82Y5/00B82Y15/00B82Y40/00A61K33/242A61K33/38A61K33/243A61K33/24A61K47/02A61P35/00A61P31/04C01P2002/72C01P2002/85C01P2004/03C01P2004/04C01P2004/61
Inventor 吕倩刘海信
Owner 广东省科学院生物与医学工程研究所
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