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Tellurium nano-particles and preparation method for same

A technology of tellurium nanoparticles and particles, which is applied in the field of tellurium nanoparticles and its preparation, can solve the problems of failing to obtain zero-dimensional tellurium nanostructures, and achieve the effects of large specific surface area, scientific preparation method, and less raw materials

Inactive Publication Date: 2013-10-30
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the final products obtained are only nanowires, nanorods, nanobelts, nanotubes, and other structures composed of these one-dimensional nanostructures, and no zero-dimensional tellurium nanostructures, namely tellurium nanoparticles

Method used

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  • Tellurium nano-particles and preparation method for same
  • Tellurium nano-particles and preparation method for same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The concrete steps of preparation are:

[0022] In step 1, sodium tellurite is first added into water, and stirred until completely dissolved to obtain an aqueous solution of sodium tellurite; wherein, the water is deionized water. Add glutathione to the sodium tellurite aqueous solution and stir for 1 d to obtain a reaction solution; wherein the weight ratio of sodium tellurite, glutathione and water in the reaction solution is 7:5:2000.

[0023] In step 2, the reaction solution is subjected to solid-liquid separation treatment; wherein, the solid-liquid separation treatment is centrifugation, and the centrifugation speed is 5000r / min and the time is 10min. The solid matter obtained after separation is then subjected to cleaning treatment; wherein, the cleaning treatment is to sequentially wash and centrifuge the solid matter once, and the washing is to use deionized water to wash. made approximately figure 1 shown, and as figure 2 Tellurium nanoparticles shown in ...

Embodiment 2

[0025] The concrete steps of preparation are:

[0026] In step 1, sodium tellurite is first added into water, and stirred until it is completely dissolved to obtain an aqueous solution of sodium tellurite; wherein, the water is distilled water. Add glutathione to the sodium tellurite aqueous solution and stir for 1.5 days to obtain a reaction solution; wherein, the weight ratio of sodium tellurite, glutathione and water in the reaction solution is 8:4.5:2000.

[0027] In step 2, the reaction liquid is first subjected to solid-liquid separation treatment; wherein, the solid-liquid separation treatment is centrifugation, and the centrifugation speed during centrifugation is 6000r / min and the time is 9min. The solid matter obtained after separation is then cleaned; wherein, the cleaning process is to wash and centrifuge the solid matter twice in sequence, and the washing is to use deionized water to wash. made approximately figure 1 shown, and as figure 2 Tellurium nanopartic...

Embodiment 3

[0029] The concrete steps of preparation are:

[0030] In step 1, sodium tellurite is first added into water, and stirred until completely dissolved to obtain an aqueous solution of sodium tellurite; wherein, the water is deionized water. Add glutathione to the sodium tellurite aqueous solution and stir for 2 days to obtain a reaction liquid; wherein, the weight ratio of sodium tellurite, glutathione and water in the reaction liquid is 9:4:2000.

[0031] In step 2, the reaction liquid is subjected to solid-liquid separation treatment; wherein, the solid-liquid separation treatment is centrifugation, and the centrifugation speed is 7000r / min, and the centrifugation time is 9min. The solid matter obtained after separation is then cleaned; wherein, the cleaning process is to wash and centrifuge the solid matter twice in sequence, and the washing is to use deionized water to wash. made as figure 1 shown, and as figure 2 Tellurium nanoparticles shown in the curve.

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Abstract

The invention discloses a tellurium nano-particles and a preparation method for the same. The particles are composed of tellurium and have particle sizes ranging from 7 to 13 nm, and the tellurium particles are spherical or ellipsoidal or multi-prismatic. The method comprises the following steps of: firstly, adding sodium tellurite in water, and stirring to completely dissolve, so as to obtain sodium tellurite aqueous solution, then adding glutathione in the sodium tellurite aqueous solution, stirring for at least 1 day, so as to obtain reaction solution, wherein the weight ratio of sodium tellurite to glutathione to water in the reaction solution is (7 to 11): (3 to 5): 2000; and secondly, performing solid-solution separation treatment on the reaction solution, then performing cleaning treatment on a solid-state object obtained after separation, so as to prepare a target product, wherein the solid-solution separation treatment is centrifugal separation, during centrifugal separation, the centrifugal rotation speed is 5000-9000 r / min and the time is 7-10 minutes, and the cleaning treatment is sequentially performing washing and centrifugal separation on the solid-state object for 1-3 times. The tellurium nano-particles can be widely used for producing quantum dot laser devices, quantum dot infrared detectors, single-electron devices and the like, and used for the fields of catalysis and medicine development.

Description

technical field [0001] The invention relates to a nano particle and a preparation method, in particular to a tellurium nano particle and a preparation method thereof. Background technique [0002] Tellurium is a P-type semiconductor material with a band gap of 0.35eV at room temperature. It has excellent properties such as photoconductivity, nonlinear optical response, pyroelectricity, piezoelectricity, biological effects, and catalysis; it has potential applications in many fields Value, such as can be used to make gas sensors, optical devices, scavenge free radicals in the body, and prepare other functional materials as templates. Nano-tellurium has attracted more and more attention due to its large specific surface area and excellent properties in many aspects. Recently, people have made some attempts and efforts to obtain nano-tellurium, such as using physical vapor deposition, chemical vapor deposition, hydrothermal and solvothermal methods, reflux methods, and various...

Claims

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Application Information

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IPC IPC(8): C01B19/02B82Y40/00
Inventor 王晶方明张立德费广涛
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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