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Method for preparing inorganic non-metallic material quantum dots by electrochemical ion impact and application thereof

An inorganic non-metallic and quantum dot technology, which is applied in the fields of materials science and electrochemistry, can solve the problems of uneven size of quantum dots, difficulty in expanding production, and harsh experimental operations, so as to achieve controllable shape, easy operation, and low cost. cheap effect

Active Publication Date: 2018-08-31
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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Problems solved by technology

Among them, the quantum dots synthesized by the hydrothermal method are not uniform in size and take a long time. The high-power long-term ultrasonic method consumes time and energy, while the alkali metal ion intercalation method requires the use of flammable and explosive lithium and potassium metals, and requires Operating under these conditions, these materials are very dangerous, and the experimental operation is extremely strict, it is difficult to expand production

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  • Method for preparing inorganic non-metallic material quantum dots by electrochemical ion impact and application thereof
  • Method for preparing inorganic non-metallic material quantum dots by electrochemical ion impact and application thereof
  • Method for preparing inorganic non-metallic material quantum dots by electrochemical ion impact and application thereof

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[0037] In some embodiments, the preparation method of the working electrode includes: uniformly mixing the powdery active material with a binder and a conductive agent in an organic solvent, then coating it on a conductive carrier, and then drying it to obtain the the working electrode.

[0038] Further, the conductive carrier includes metal foil, for example, preferably copper foil, and is not limited thereto.

[0039] Further, the conductive agent includes carbon black or acetylene black, but is not limited thereto.

[0040] Further, the binder includes polyvinylidene fluoride (PVDF), and is not limited thereto.

[0041] In some more specific implementation cases, the preparation method of the working electrode comprises: at least homogenizing powdered active material raw materials, acetylene black, polyvinylidene fluoride (PVDF), etc. in N-methylpyrrolidone (NMP) 8h, after the homogenization is finished, spread it evenly on the copper foil and dry it overnight.

[0042] Pr...

Embodiment 1

[0093] Embodiment 1: 200mgWS 2 Disperse with 25mg acetylene black, 25mg polyvinylidene fluoride (PVDF) in 2mL N-methylpyrrolidone and homogenize for more than 8 hours, then evenly coat the active substance on a 9cm×3cm×3cm copper foil, the active substance accounts for The area is 3cm×3cm, and then the electrode is dried overnight in a vacuum oven at 100°C, and then the copper foil is used as the working electrode, the Ag / AgCl is used as the reference electrode, and the Pt electrode is used as the counter electrode, and the electrolyte is 1mol / L Al(ClO 4 ) 3 9H 2 Propylene carbonate (PC) solution of O, the working electrode is discharged by chronopotentiometry (the principle can be referred to Figure 1a-Figure 1b As shown, the discharge treatment voltage window is about 0-0.35V, and the discharge current can be 0.11mA / cm 2 、0.50mA / cm 2 、1.0mA / cm 2 、1.11mA / cm 2 ), and then add the electrochemically treated active material into oleic acid for ultrasonic (ultrasonic power ...

Embodiment 2

[0095] Embodiment 2: 200mg MoS 2 Disperse with 25mg acetylene black, 25mg polyvinylidene fluoride (PVDF) in 2mL N-methylpyrrolidone and homogenize for more than 8 hours, then evenly coat the active substance on a 9cm×3cm×3cm copper foil, the active substance accounts for The area is 3cm×3cm, and then the electrode is dried overnight in a vacuum oven at 100°C, and then the copper foil is used as the working electrode, the Ag / AgCl is used as the reference electrode, and the Pt electrode is used as the counter electrode, and the electrolyte is 1mol / L Al(ClO 4 ) 3 .9H 2 Propylene carbonate (PC) solution of O, discharge treatment on the working electrode by chronopotentiometric method (the discharge treatment voltage window is about 0-0.35V, and the discharge current can be 0.056mA / cm 2 、0.10mA / cm 2 、0.25mA / cm 2 、0.56mA / cm 2 ), then add salicylic acid to the electrochemically treated active material (ultrasonic power is 100W, ultrasonic time is 15min), and finally wash with a...

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Abstract

The invention discloses a method for preparing inorganic non-metallic material quantum dots by electrochemical ion impact and an application thereof. The method comprises the following steps of: underthe action of an electric field, a metal cation impacts an active substance to destroy the internal structure of the active substance and redistribute the electric charge in the active substance, sothat the quantum dots of the inorganic non-metal material are prepared. According to the invention, the preparation process of the inorganic non-metallic material quantum dots is simple, easy to operate, mild in condition, low in cost and controllable in preparation time within 10min, has universality and is suitable for large-scale production, and the morphology of the prepared inorganic non-metallic material quantum dots is controllable, can be uniformly and stably dispersed in a dispersing agent, has excellent performance, and has wide application prospect in the fields of explosive detection, piezoelectric device, biological imaging, electrochemical hydrogen evolution, photocatalytic hydrogen production and the like.

Description

technical field [0001] The invention relates to a method for preparing quantum dot materials, in particular to a method for preparing quantum dots of inorganic non-metal materials by electrochemical ion impact, quantum dots of inorganic non-metal materials and applications thereof, belonging to the fields of material science and electrochemistry. Background technique [0002] Quantum dots are a typical zero-dimensional material. Due to its unique quantum confinement effect and the existence of unsaturated bonds on the surface, it has a wide range of uses in catalysis, energy and other fields. It can quickly and efficiently prepare inorganic non-metallic compounds. Quantum dots have also become a focus of attention. The current preparation methods of quantum dots include hydrothermal method, direct ultrasonic method and alkali metal ion intercalation method, etc. Among them, the quantum dots synthesized by hydrothermal method are not uniform in size and take a long time. Op...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D1/00G01N21/63B82Y30/00
CPCB82Y30/00C25D1/00G01N21/63
Inventor 赵志刚陈志刚
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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