Device of preparing metal nanometer particle colloid by liquid phase medium pulse laser ablation

A technology of pulsed laser ablation and metal nanoparticles, which is applied in the field of devices for preparing metal nanoparticle colloids by pulsed laser ablation in the liquid phase, can solve the problems of easy aggregation of nanoparticles, low utilization rate of targets, and agglomeration rate of target utilization low level problem

Inactive Publication Date: 2007-07-18
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problems of low target material utilization rate and easy aggregation of nanoparticles existing in the existing liquid phase laser ablation preparation metal nanoparticle colloidal device, the present invention provides a liquid phase medium pulse Device for preparing metal nanoparticle colloids by laser ablation

Method used

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  • Device of preparing metal nanometer particle colloid by liquid phase medium pulse laser ablation

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Embodiment

[0017] Referring to accompanying drawing 2, a kind of device of pulse laser ablation in liquid phase prepares metal nano particle colloid, comprises laser generator, the ablation container 1 that holds liquid, metal target 3, and described metal target is fixed on the base 4, the base passes through the bottom of the ablation container and is placed in the base 5 below the ablation container, and the base and the ablation container are sealed by a sealing ring 8, which effectively prevents the solution from leaking, thereby ensuring the safety of the step The motor causes damage; the base is provided with a motor 6, and the output shaft of the motor is fixedly connected to the base through a coupling rod 7; the laser point of the laser generator deviates from the rotation axis point of the base. The lower end surface of the coupling rod is extended with a concave plate for containing the liquid. The coupling rod is located in the center of the concave plate. The coupling rod ha...

specific Embodiment

[0018] A specific embodiment of preparing metal nanoparticle colloid: KrF gas laser (pulse width: 30ns, wavelength: 248nm, pulse energy: 292mJ / pulse, original light spot size: 24 * 5mm 2 , repetition rate: 10Hz) at a focal spot size of 4×1mm 2 Under the condition of , the laser power density is 7.3J / cm 2 , the laser was irradiated to an Ag target immersed in 10 ml of distilled water (without SDS) for 10 min. The target speed is 0-30rad / min.

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Abstract

The present invention relates to a equipment for preparing metal nano particle colloid by utilizing pulse laser ablation in liquid phase. Said equipment includes the following several portions: laser generator, ablation container in which the liquid can be held and metal target. The described metal target is fixed on a pedestal, and said pedestal is passed through the bottom portion of said ablation container and its placed in the base frame interior under the ablation container, the described pedestal and the described ablation container are sealed, in the described base frame interior a motor is set, and the output, shaft of said motor is fixedly connected with pedestal, and the described metal target can be rotated. Besides, said invention also provides the working principle of said equipment.

Description

(1) Technical field [0001] The invention is a device for preparing metal nano particle colloid by pulse laser ablation in liquid phase. (2) Background technology [0002] Metal nanoparticle colloid is a system composed of metal powder and particles with a size of 0.1-100 nanometers, which is highly dispersed and can exist stably in solution. This material has many properties different from conventional materials: such as magnetism, light, heat, electricity, superconductivity, etc. Therefore, metal nanomaterials have become the focus and focus of research and development in all countries in the world. It is forming a new industry and driving the development of high-tech in our country, thus producing huge economic and social effects. [0003] At present, there are many methods for preparing metal nanoparticle colloids at home and abroad: such as chemical redox method, chemical deposition method, and vacuum evaporation method. Electrochemical rough electrode method, sol-gel ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/02
Inventor 宋仁国徐兵
Owner ZHEJIANG UNIV OF TECH
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