Method for preparing orientation arrangement Nb2O5 nanorod through single-reagent self reaction

A directional arrangement and self-reaction technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of poor orientation of nanorods, cumbersome nanorods, high energy consumption, etc., and achieve easy operation control, low cost, energy low cost effect

Active Publication Date: 2018-07-10
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Various current Nb 2 o 5 The synthesis method of nanorods is generally cumbersome and has the characteristics of high cost or high energy consumption, and the synthesized Nb 2 o 5 Nanorods are poorly oriented
This to some extent restricts the Nb 2 o 5 Application and popularization of nanorods in industrial production

Method used

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  • Method for preparing orientation arrangement Nb2O5 nanorod through single-reagent self reaction
  • Method for preparing orientation arrangement Nb2O5 nanorod through single-reagent self reaction
  • Method for preparing orientation arrangement Nb2O5 nanorod through single-reagent self reaction

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Experimental program
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Effect test

Embodiment 1

[0047] The alignment Nb provided by this embodiment 2 o 5 A method for preparing nanorods, comprising the following steps:

[0048] (1) A high-purity gold tube with a diameter of 3 to 5 mm is cut into 4 cm, placed in a beaker loaded with 0.01 mol / L dilute nitric acid solution, and placed on a heating plate at 80° C. for cooking for two hours; Ionized water washing, drying, and pre-sealing of one end and other pre-treatments ensure that there are no impurities and cracks in the gold tube;

[0049] (2) 0.76g potassium fluoroniobate (K 2 NbF 7 , commercially available product, the same below) powder is dissolved in 250mL deionized water, fully dissolved to obtain a concentration of 0.01mol / L K 2 NbF 7 solution, put about 0.2mL of the prepared reaction solution into a gold tube, control the filling degree to about 40% to 70%, and seal it by welding. 110°C drying oven for more than 2 hours, and then weigh again to ensure that the weight error before and after weighing is less...

Embodiment 2

[0056] The alignment Nb provided by this embodiment 2 o 5 A method for preparing nanorods, comprising the following steps:

[0057] (1) the pretreatment of platinum tube is the same as embodiment 1;

[0058] (2) Potassium fluoroniobate (K 2 NbF 7 ) powder was dissolved in 250mL deionized water, fully dissolved to obtain 0.005mol / L K 2 NbF 7 solution, put about 0.2mL of the prepared reaction solution into a platinum tube, the filling degree is controlled at about 40% to 70%, and seal it by welding. Put it into a 110°C drying oven for more than 2 hours, and then weigh again to ensure that the weight error before and after weighing is less than 0.001g, indicating that the gold tube is well sealed;

[0059] (3) Put the platinum tube, which is confirmed to be well sealed and contains the solution sample, into the high-temperature and high-pressure reactor. After tightening the reactor, check the tightness of the reactor. After confirming that it is correct, inject deionized w...

Embodiment 3

[0065] The alignment Nb provided by this embodiment 2 o 5 A method for preparing nanorods, comprising the following steps:

[0066] (1) the pretreatment of gold-palladium tube is the same as embodiment 1;

[0067] (2) 0.76g potassium fluoroniobate (K 2 NbF 7 ) powder was dissolved in 250mL deionized water, fully dissolved to obtain 0.01mol / L K 2 NbF 7 solution, put about 0.2mL of the prepared reaction solution into a gold-palladium tube, control the filling degree to about 40% to 70%, and seal it by welding. Put the tube in a 110°C drying oven for more than 2 hours, and then weigh it again to ensure that the weight error before and after weighing is less than 0.001g, indicating that the gold-palladium tube is well sealed;

[0068] (3) Put the gold-palladium tube that is confirmed to be well sealed and contains the solution sample into the high-temperature and high-pressure reaction kettle. After tightening the reaction kettle, check the tightness of the reaction kettle. ...

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Abstract

The invention discloses a method for preparing an orientation arrangement Nb2O5 nanorod through single-reagent self reaction. The method comprises the following steps that (1) potassium fluoniobate powder is selected and dissolved in deionized water; a potassium fluoniobate dilute solution is put into a pretreated noble metal tube; sealing is performed; (2) the noble metal tube is put into a hydrothermal reaction kettle for sealing; the temperature in the hydrothermal reaction kettle is regulated to 200 to 500 DEG C; inert gas or deionized water is used for regulating the pressure in the hydrothermal reaction kettle to be 50 to 200MPa; hydrolysis reaction is performed for 12 to 24h; after the reaction is finished, the reaction kettle is subjected to temperature reduction to room temperature; (3) the hydrothermal reaction kettle is opened; the noble metal tube after the reaction is taken out and opened; residual solution is recovered; samples are collected; the orientation arrangement Nb2O5 nanorod is obtained. The method has the advantages that the single reagent is used as a synthetic raw material; the raw materials are simple and can be easily obtained; the cost is low; the energy consumption is low; the Nb2O5 nanorod obtained through preparation has good crystal form; the directionality is obvious.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular relates to a single reagent self-reaction preparation with directional arrangement Nb 2 o 5 nanorod approach. Background technique [0002] Nb 2 o 5 As a typical n-type semiconductor material, it has acid and alkali corrosion resistance, excellent optical properties and stable and superior electrochemical properties, making it widely used in capacitors, photoconductive materials, superconducting materials, photoelectric catalysis, solar cells, biosensors and Lithium-ion batteries and other aspects have a wide range of potential applications, especially in electronic materials such as capacitors and lithium-ion batteries. [0003] As early as 1981, Reichman et al. first introduced Nb 2 o 5 As the original lithium battery electrode material, Koshiba et al. studied Nb under different configurations in 1994. 2 o 5 electrochemical properties, but these studies used Nb ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G33/00B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01G33/00C01P2002/82C01P2004/03C01P2004/16C01P2004/62
Inventor 严海波丁兴陈晨何俊杰孙卫东
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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