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Preparation method for pure metal bismuth nanoparticles

A bismuth nano-metal technology, which is applied in the field of preparation of elemental metal bismuth nanoparticles, can solve the problems of short process flow and achieve the effects of simple preparation process, controllable time and easy acquisition

Inactive Publication Date: 2016-08-31
TIANJIN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

The precipitation conversion method has a short process flow and is easy to operate, but the prepared compounds are limited to a few metal oxides and hydroxides

Method used

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  • Preparation method for pure metal bismuth nanoparticles
  • Preparation method for pure metal bismuth nanoparticles
  • Preparation method for pure metal bismuth nanoparticles

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Embodiment Construction

[0020] The present invention will be described in further detail below through specific examples.

[0021] First weigh 3.525g of bismuth chloride dihydrate, 3.75g of tartaric acid, 10.25g of trisodium citrate, 7.35g of citric acid, 20.25g of glycerin and 18g of sodium chloride with an electronic balance, and measure 250ml of deionized water with a measuring cylinder Pour it into a beaker with a magnet, and place it on a magnetic stirrer to stir, then pour it into the beaker in the order of tartaric acid, citric acid, trisodium citrate, glycerin and sodium chloride and stir until it is completely dissolved. Or ammonia water to adjust the pH value of the solution so that the pH value of the solution is adjusted to 1.

[0022] The graphite electrode is used as the anode material, the porous alumina template is used as the cathode material, and the prepared bismuth-containing chloride salt solution is used as the electrolyte, and is deposited for a long time at a constant temperat...

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Abstract

The invention provides a preparation method for pure metal bismuth nanoparticles and belongs to the technical filed of metal nano material preparation. The preparation method comprises the following steps that bismuth elements in chloride salt containing bismuth are uniformly deposited in hole channels of a porous alumina mold plate, so that pure metal bismuth nanowire arrays are obtained; the porous alumina mold plate fully deposited with pure metal bismuth nanowires is connected with a wire with conductive silver paste, so that an electrode is made; then the electrode is connected into an experimental circuit in series, the direct current voltage is set to be 40 V, the experiment time is set to be 60 min, and the experiment process is repeated for two to three times; and a measured sample cross section is selected to be observed through a scanning electron microscope, and thus it can be found that the particle refinement phenomenon appears on the pure metal bismuth nanowires along with increasing of the times of the repeated experiments. According to the preparation method for the pure metal bismuth nanoparticles, the preparation process is simple, and the raw materials are easy to obtain; the voltage and the time of experimental reaction are controllable; and in addition, the prepared materials are widely applied to thermoelectricity, lubricating oil additives and other aspects.

Description

technical field [0001] The invention relates to the field of metal nanomaterial preparation, in particular to a method for preparing elemental metal bismuth nanoparticles, and belongs to the technical field of metal nanomaterial preparation. Background technique [0002] Metal nanomaterials not only have the characteristics of metal itself and nanomaterials, but also have very good physical and chemical properties. Therefore, metal nanomaterials have gradually become the center of material science research. However, the ratio of surface atoms to total atomic number of metal nanoparticles in metal nanomaterials increases with the decrease of particle size, showing strong volume effect, quantum size effect, surface effect and macroscopic quantum tunneling effect. Metal nanoparticles have been widely used in catalysis, photocatalysis, information storage, surface-enhanced Raman, solar cells, and optoelectronics. Therefore, the preparation of metal nanoparticles is the focus of...

Claims

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Application Information

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IPC IPC(8): C25C1/22B22F9/06B82Y40/00
CPCB22F9/06B82Y40/00C25C1/22Y02P10/20
Inventor 王学伟徐冉马士精何朝成康耀仁袁志好
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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