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Hydrothermal synthesis method of zinc-doped tin oxide with hollow cubic structure

A cubic structure, hydrothermal synthesis technology, applied in the direction of nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve the problems that have not been reported in related reports, and achieve the effects of simple process, reduced agglomeration, and high product purity

Inactive Publication Date: 2012-11-07
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However Zn 2+ Hollow cubic structure doped with tin oxide and its method have not been reported yet

Method used

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  • Hydrothermal synthesis method of zinc-doped tin oxide with hollow cubic structure
  • Hydrothermal synthesis method of zinc-doped tin oxide with hollow cubic structure
  • Hydrothermal synthesis method of zinc-doped tin oxide with hollow cubic structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for hydrothermally synthesizing a zinc-doped tin oxide hollow cubic structure, comprising the steps of:

[0032] (1) Configure SnCl 4 ·5H 2 O and (Zn(NO 3 ) 2 ·6H 2 Mixed aqueous solution of O;

[0033] (2) The concentration of the configured substance is an aqueous NaOH solution of 2.5mol / L;

[0034] (3) the SnCl obtained in step (1) 4 and (Zn(NO 3 ) 2 The mixed aqueous solution of is added dropwise in the NaOH aqueous solution of step (2), SnCl 4 and (Zn(NO 3 ) 2 The volume ratio of the mixed solution and NaOH aqueous solution is 1:3, so that the SnCl 4 The concentration of the substance is 0.1094mol / L, (Zn(NO 3 ) 2 ·6H 2 The molar concentration of O is 0.0156mol / L, the molar concentration of NaOH is 1.875mol / L, the dropping rate is 2ml-3ml / min, and the precursor is obtained by stirring evenly;

[0035] (4) Transfer the precursor of step (3) to a hydrothermal reaction kettle so that its filling degree is 80%, and react at a constant temperature...

Embodiment 2

[0041] A method for hydrothermally synthesizing a zinc-doped tin oxide hollow cubic structure, comprising the steps of:

[0042] (1) Configure SnCl 4 ·5H 2 O and (Zn(NO 3 ) 2 mixed aqueous solution;

[0043] (2) The concentration of the configured substance is an aqueous NaOH solution of 2.25mol / L;

[0044] (3) step (1) to obtain SnCl 4 and (Zn(NO 3 ) 2 The mixed solution of is added dropwise in the NaOH aqueous solution of step (2), SnCl 4 and (Zn(NO 3 ) 2 The volume ratio of the mixed solution and NaOH aqueous solution is 1:5, and the rate of addition is 2ml~3ml / min, so that SnCl 4 The concentration of the substance is 0.1118mol / L, (Zn(NO 3 ) 2 ·6H 2 The molar concentration of O is 0.0131mol / L, and the molar concentration of NaOH is 1.875mol / L. Stir evenly to obtain the precursor;

[0045] (4) Transfer the precursor of step (3) to a hydrothermal reaction kettle so that its filling degree is 80%, and react at a constant temperature of 180° C. for at least 25 hou...

Embodiment 3

[0049] A method for hydrothermally synthesizing a zinc-doped tin oxide hollow cubic structure, comprising the steps of:

[0050] (1) Configure SnCl 4 and (Zn(NO 3 ) 2 mixed aqueous solution;

[0051] (2) The concentration of the configured substance is an aqueous NaOH solution of 2mol / L;

[0052] (3) the SnCl obtained in step (1) 4 and (Zn(NO 3 ) 2 The mixed aqueous solution of is added dropwise in the NaOH aqueous solution of step (2), SnCl 4 and (Zn(NO 3 ) 2 The volume ratio of the mixed solution and NaOH aqueous solution is 1: 15, and the dropping rate is 2ml~3ml / min, so that SnCl 4 The concentration of the substance is 0.1144mol / L, (Zn(NO 3 ) 2 ·6H 2 The molar concentration of O is 0.0106, and the molar concentration of NaOH is 1.875 mol / L. Stir evenly to obtain the precursor;

[0053] (4) Transfer the precursor of step (3) to a hydrothermal reaction kettle so that its filling degree is 80%, and react at a constant temperature of 190° C. for at least 25 hours ...

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Abstract

The invention provides a hydrothermal synthesis method of zinc-doped tin oxide with a hollow cubic structure, comprising the following steps: dropwise adding a mixed aqueous solution of SnCl4 and Zn(NO3)2 to a NaOH aqueous solution with a certain concentration, wherein, the volume ratio of the mixed aqueous solution of SnCl4 and Zn(NO3)2 to the NaOH aqueous solution is 1:3-1:15, the concentrationof SnCl4 is 0.1094-0.1144mol / L, the concentration of Zn(NO3)2.6H2O is 0.0106-0.0156mol / L, and the concentration of NaOH is 1.875mol / L; evenly stirring and transferring the mixed solution to a hydrothermal reaction kettle so that the filling degree reaches 80%; carrying out isothermal reaction at the temperature of 180-190 DEG C for 25 hours; and finally centrifuging, washing and drying the obtained reaction product to obtain the zinc-doped tin oxide. The hydrothermal synthesis method has simple process and easy operation; and the synthesized zinc-doped tin oxide particles have controllable size and high purity, and the obtained product has excellent electrical property.

Description

technical field [0001] The invention relates to a chemical synthesis method of oxide semiconductor nano powder, in particular to a hydrothermal synthesis method of zinc-doped tin oxide with a cubic hollow structure. Background technique [0002] Tin oxide (SnO 2 ) crystals mainly include tetragonal and orthorhombic crystal structures. The tetragonal crystal is rutile tin oxide, which is an important wide bandgap n-type semiconductor with a bandgap of 3.65eV. It can be used in solar cells, transparent conductors, catalysts, and gas sensing. It is used in scientific research and Industrial applications have attracted widespread attention. The shortcomings of tin oxide material itself limit its application and development. Intrinsic tin oxide has low carrier concentration and high resistivity, which affects its use efficiency in terms of optical and electrical properties. Studies have shown that SnO with nanostructure 2 After doping modification, its luminescence, gas sensi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B82B3/00
Inventor 王为民贾铁昆傅正义王晓峰王玉江廖桂华
Owner WUHAN UNIV OF TECH
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