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A kind of synthetic method of graphite-like modified nano-zinc stannate

A nano-zinc stannate and graphite modification technology, which is applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., to achieve the effects of mild conditions, large-scale production, and high purity

Inactive Publication Date: 2016-04-13
LUOYANG INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, glucose was selected as the carbon source to synthesize nano-Zn by solvothermal 2 SnO 4 As a raw material, the precursor is obtained by hydrothermal synthesis, and the precursor is subjected to high-temperature heat treatment to obtain graphite-like modified nano-zinc stannate. The synthesized product is expected to obtain excellent photocatalytic properties. report

Method used

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  • A kind of synthetic method of graphite-like modified nano-zinc stannate
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  • A kind of synthetic method of graphite-like modified nano-zinc stannate

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preparation example Construction

[0027] A synthetic method of graphite-like modified nano-zinc stannate, comprising the following steps:

[0028] (1) Configure SnCl 4 ·5H 2 O and Zn(Ac) 2 2H 2 A mixed solution of O, the solvent is a mixture of deionized water and absolute ethanol, wherein the volume ratio of deionized water to absolute ethanol is 4 to 5:1, and the SnCl in the solution is obtained 4 The concentration of the substance is 0.25mol / L; Zn(Ac) 2 The concentration of the substance is 0.5mol / L;

[0029] (2) NaOH solution with a volume concentration of 3.75mol / L, and the solvent is a mixture of deionized water and absolute ethanol, wherein the volume ratio of deionized water to absolute ethanol is 4:1~5:1;

[0030] (3) Take 2 parts by volume of NaOH solution prepared in step (2), and add it dropwise to 1 part of SnCl prepared in step (1) 4 and Zn(Ac) 2 In the mixed solution, the rate of addition is 2ml / min, stir evenly, obtain suspension; Afterwards, above-mentioned suspension is moved in the re...

Embodiment 1

[0039] A kind of synthetic method of graphite modified nano-zinc stannate, it comprises the steps:

[0040] (1) Configure SnCl 4 ·5H 2 O and Zn(Ac) 2 2H 2 The mixed solution of O, the solvent is the mixture of deionized water and absolute ethanol, wherein, the volume ratio of deionized water and absolute ethanol is 4:1, makes the Sn in the solution 4+ The concentration of the substance is 0.25mol / L; Zn 2+ The concentration of the substance is 0.5mol / L;

[0041] (2) NaOH solution with a volume concentration of 3.75mol / L, and the solvent is a mixture of deionized water and absolute ethanol, wherein the volume ratio of deionized water and absolute ethanol is 4:1;

[0042] (3) Take 2 parts by volume of NaOH solution prepared in step (2), and add it dropwise to 1 part of SnCl prepared in step (1) 4 and Zn(Ac) 2 In the mixed solution, the rate of addition is 2ml / min, stir evenly to obtain a suspension; after that, move the above suspension into a reactor with a filling degree...

Embodiment 2

[0051] A kind of synthetic method of graphite modified nano-zinc stannate, it comprises the steps:

[0052] (1) Configure SnCl 4 ·5H 2 O and Zn(Ac) 2 2H 2 The mixed solution of O, the solvent is the mixture of deionized water and absolute ethanol, wherein, the volume ratio of deionized water and absolute ethanol is 5:1, makes the Sn in the solution 4+ The concentration of the substance is 0.25mol / L; Zn 2+ The concentration of the substance is 0.5mol / L;

[0053] (2) NaOH solution with a volume concentration of 3.75 mol / L, and the solvent is a mixture of deionized water and absolute ethanol, wherein the volume ratio of deionized water and absolute ethanol is 5:1;

[0054] (3) Take 2 parts by volume of NaOH solution prepared in step (2), and add it dropwise to 1 part of SnCl prepared in step (1) 4 and Zn(Ac) 2 In the mixed solution, the dropping rate was 2ml / min, and stirred evenly to obtain a suspension; after that, the above-mentioned suspension was moved into a reactor ...

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Abstract

A synthetic method of graphite-like modified nano-zinc stannate includes the following steps that first, a certain amount of SnCl4 and a certain amount of Zn(AC)2 are dissolved into mixed solvent of deionized water and absolute ethyl alcohol, and a mixed solution is obtained; second, a NaOH solution is dripped into the mixed solution of SnCl4 and Zn(AC)2, the mixed solution is shifted into a reaction still after being stirred, the temperature of the mixed solution is kept at 200 DEG C, and the obtained Zn2SnO4 product is separated out, washed and dried; third, a certain amount of Zn2SnO4 and a certain amount of glucose are added into deionized water to be stirred and subjected to ultrasonic treatment for 30 min; fourth, the mixed turbid solution of Zn2SnO4 and glucose is shifted into the reaction still, the temperature of the mixed turbid solution is kept at 180 DEG C for 10 h, and the obtained product is separated out, washed and dried; fifth, the product in the fourth step is subjected to thermal treatment at 700 DEG C in nitrogen for 2 h, and the final product is obtained. The synthetic technology of the product is simple, graphite-like layers are formed on the surfaces of particles of the finished product, and the product has good photocatalytic performance.

Description

technical field [0001] The invention relates to a chemical synthesis method of oxide semiconductor nano powder, in particular to a method and product for synthesizing graphite-like modified nano-zinc stannate. Background technique [0002] Zinc stannate (Zn 2 SnO 4 ) is a wide bandgap n-type ternary compound semiconductor with a spinel structure. Because of its high electron mobility and good conductivity, it is used in transparent electrodes, flammable gas detection, humidity sensors, Lithium-ion battery catalysts and dye-sensitized solar cells have attracted extensive attention from researchers. Zn 2 SnO 4 The electron mobility and quantum efficiency are high, and the recombination probability of photogenerated electrons and holes is low. As a photocatalyst, its application prospect is broad. Studies have shown that nano-Zn 2 SnO 4 With excellent photocatalytic performance, it can effectively degrade NO, HCHO and organic pollutants, providing a new way for indoor ga...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/14B82Y30/00B82Y40/00
Inventor 贾铁昆王晓峰廖桂华李婷婷李宏欣付芳陈建赵军伟
Owner LUOYANG INST OF SCI & TECH