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A method for preparing tin niobate nanospheres by alcohol solvothermal

A technology of tin niobate and nanospheres, applied in chemical instruments and methods, niobium compounds, physical/chemical process catalysts, etc., to achieve low cost, good repeatability, and good application prospects

Active Publication Date: 2019-06-07
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently synthesized SnNb with uniform morphology and good dispersion 2 o 6 Few reports on nanospheres

Method used

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  • A method for preparing tin niobate nanospheres by alcohol solvothermal
  • A method for preparing tin niobate nanospheres by alcohol solvothermal
  • A method for preparing tin niobate nanospheres by alcohol solvothermal

Examples

Experimental program
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Effect test

Embodiment 1

[0019] (1) First dissolve stannous chloride (SnCl) with deionized water 2 2H 2 O), and with niobium pentoxide (Nb 2 o 5 ) powders are mixed to form a paste, and then organic alcohols (ethanol) and surfactant polyvinylpyrrolidone (PVP) are added;

[0020] (2) Using the solution obtained in step (1) as the reaction precursor, it was heat-treated in a closed reactor with a volume of 20mL at a temperature of 160°C for 48 hours, and SnNb was successfully prepared. 2 o 6 nanospheres;

[0021] where SnCl 2 2H 2 O, Nb 2 o 5 , PVP were used in amounts of 0.4g, 0.4g, 0.1g; deionized water and alcohol were used in amounts of 2mL, 8mL.

Embodiment 2

[0023] (1) First dissolve stannous chloride (SnCl) with deionized water 2 2H 2 O), and with niobium pentoxide (Nb 2 o 5 ) powders are mixed to form a paste, and then organic alcohols (ethanol) and surfactant polyvinylpyrrolidone (PVP) are added;

[0024] (2) Using the solution obtained in step (1) as the reaction precursor, it was heat-treated in a closed reactor with a volume of 20mL at a temperature of 180°C for 48 hours, and SnNb was successfully prepared. 2 o 6 nanospheres;

[0025] where SnCl 2 2H 2 O, Nb 2 o 5 , PVP were used in amounts of 0.5g, 0.3g, 0.1g; deionized water and alcohol were used in amounts of 2mL, 8mL.

Embodiment 3

[0027] (1) First dissolve stannous chloride (SnCl) with deionized water 2 2H 2 O), and with niobium pentoxide (Nb 2 o 5 ) powders are mixed to form a paste, and then organic alcohols (ethanol) and surfactant polyvinylpyrrolidone (PVP) are added;

[0028] (2) Using the solution obtained in step (1) as the reaction precursor, it was heat-treated in a closed reactor with a volume of 20mL at a temperature of 180°C for 48 hours, and SnNb was successfully prepared. 2 o 6 nanospheres;

[0029] where SnCl 2 2H 2 O, Nb 2 o 5 , PVP were used in amounts of 0.4g, 0.2g, 0.08g; deionized water and alcohol were used in amounts of 2mL, 8mL.

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Abstract

The invention relates to a method for preparing tin niobate nanospheres by using alcohol solvent heat, and belongs to the field of functional materials. The method comprises the following steps: mixing SnCl2.2H2O and niobium pentoxide (Nb2O5) powder, concocting a pasty material, adding an organic alcohol (such as ethanol, isopropanol, ethylene glycol and glycerol) and a surfactant polyvinylpyrrolidone (PVP), and performing alcohol heat treatment on the above mixture to obtain the thermodynamically-metastable SnNb2O6 nanosphere material. The obtained SnNb2O6 nanospheres have better applicationprospects in the field of photocatalysis.

Description

technical field [0001] The invention relates to an alcohol solvothermally synthesized tin niobate (SnNb 2 o 6 ) The nanosphere method belongs to the field of functional materials. technical background [0002] At present, it is particularly urgent to find new photocatalysts that can utilize visible light for sewage treatment. SnNb 2 o 6 Nanomaterials have great application potential in the fields of gas sensing, catalysis, optics, and electrical energy storage. However, because niobium oxide often exhibits chemical inertness and relatively stable properties, it is not conducive to the synthesis of niobate nanomaterials as reaction raw materials. In contrast, the liquid-phase chemical synthesis process is easy to activate niobium oxide raw materials and crystal growth of niobate nanomaterials, especially the solvothermal method has shown unique charm in the synthesis of niobate microstructures. Currently synthesized SnNb with uniform morphology and good dispersion 2 o ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G33/00B01J23/20
Inventor 吴俊书王金淑杜玉成李永利
Owner BEIJING UNIV OF TECH
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