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Preparation method for ultrafine In2Ge2O7(En) hybrid nano-wire, and nano-wire prepared by the same

A technology of nanowires and indium acetate, applied in the field of nanowires, can solve the problems of limitations and difficulties in the synthesis of ultra-fine nanowires, and achieve the effects of large application potential, mild preparation conditions, simple process and energy saving

Inactive Publication Date: 2013-03-20
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, only a very small number of metals, metal oxides and chalcogenide ultrafine nanowires have been synthesized so far.
The synthesis of ultrafine nanowires from complex compounds (such as ternary oxides) is limited due to the difficulty in controlling the growth of multiple components at the atomic level

Method used

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  • Preparation method for ultrafine In2Ge2O7(En) hybrid nano-wire, and nano-wire prepared by the same
  • Preparation method for ultrafine In2Ge2O7(En) hybrid nano-wire, and nano-wire prepared by the same
  • Preparation method for ultrafine In2Ge2O7(En) hybrid nano-wire, and nano-wire prepared by the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Add 2mmol of indium acetate and 3mmol of germanium oxide into 15ml of a mixed solvent, and stir it magnetically for 0.5 to 1 hour to obtain a white suspension, wherein the mixed solvent is prepared by uniformly mixing ethylenediamine and water at a volume ratio of 14:1 have to;

[0028] (2) Pour the white suspension into a 25ml polytetrafluoroethylene-lined stainless steel autoclave, heat up to 180°C, react for 24 hours, and cool with the furnace after the reaction;

[0029] (3) The reaction product was centrifuged to obtain a solid powder, which was then washed with distilled water and ethanol in sequence, and then dried at 60°C for 8-12 hours to obtain ultrafine In 2 Ge 2 o 7 (En) Hybrid nanowires.

[0030] The products were analyzed by X-ray diffraction (XRD), photoelectron spectroscopy (XPS), thermogravimetry (TG), differential thermal analysis (DSC), fluorescence spectroscopy, scanning electron microscopy and transmission electron microscopy.

[0031] refer...

Embodiment 2

[0038] The steps are basically the same as in Example 1, except that the content of indium acetate is 0.2 mmol, the content of germanium oxide is 0.3 mmol, the volume ratio of ethylenediamine and water in the mixed solvent is 10:5, and the reaction time is 12 h.

[0039] The product that makes is basically consistent with embodiment 1, and its scanning electron microscope picture is as Image 6 shown.

Embodiment 3

[0041] The steps are basically the same as in Example 1, except that the volume ratio of ethylenediamine and water in the mixed solvent is 10:5, the reaction temperature is 160° C., and the reaction time is 48 hours.

[0042] The product that makes is basically consistent with embodiment 1, and its scanning electron microscope picture is as Figure 7 shown.

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Abstract

The invention relates to a method for preparing ultra-fine In2Ge2O7 (En) hybrid nanowires, which includes the following steps: first, add indium acetate and germanium oxide into a mixed solvent composed of ethylenediamine and water, and disperse them evenly; and then add them at 160 to 200°C reaction, and finally after centrifugation, washing and drying, ultrafine In2Ge2O7(En) hybrid nanowires are obtained; among them, the molar ratio of indium acetate and germanium oxide is 2:3~2:2, and the molar concentration of indium acetate is 0.013~ 0.13mol / L, the volume ratio of ethylenediamine and water in the mixed solvent is 10:5~14:1. The present invention adopts a solvothermal method, has mild preparation conditions, does not require high-temperature sintering, and has a simple and energy-saving process; the diameter of the nanowires synthesized by the preparation method of the present invention is only 2 to 3 nm, and contains organic groups, organic and inorganic hybrids, fluoresces and produces The wavelength is blue-shifted, and it has certain photocatalytic CO2 reduction activity after loading Pt.

Description

technical field [0001] The invention relates to an ultrafine In 2 Ge 2 o 7 A method for preparing a (En) hybrid nanowire and a nanowire prepared by the method belong to the field of new materials. Background technique [0002] Ultra-fine nanowires (NWS) with a diameter of 2-3nm or less, due to the ultra-fine diameter size, the surface electronic structure and crystal structure change, resulting in magical quantum effects and surface effects, which have a certain A series of exotic physical and chemical properties have become new basic and technical research hotspots. [0003] However, only very few metals, metal oxides and chalcogenide ultrafine nanowires have been synthesized so far. The synthesis of ultrathin nanowires from complex compounds (such as ternary oxides) is limited due to the difficulty in regulating the growth of multiple components at the atomic level. [0004] Germanate has attracted much attention in the fields of catalysis, adsorption, ion exchange, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G17/00B82Y30/00
Inventor 周勇刘琪马玥邹志刚
Owner NANJING UNIV
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