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 problems such as difficulty and limitations 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: 2011-10-26
NANJING UNIV
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  • 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 Figure 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 preparation method for a ultrafine In2Ge2O7(En) hybrid nano-wire. The method comprises the following steps: adding indium acetate and germanium oxide to a mixing solvent comprising ethylenediamine and water, followed by uniform dispersing, then carrying out a reaction at a temperature of 160-200 DEG C, finally carrying out centrifugal separation, washing and drying to obtain the ultrafine In2Ge2O7(En) hybrid nano-wire, wherein a molar ratio of the indium acetate to the germanium oxide is 2:3-2:2, a molar concentration of the indium acetate is 0.013-0.13mol/L, a volume ratio of the ethylenediamine to the water in the mixing solvent is 10:5-14:1. According to the present invention, a solvent thermal process is adopted, the preparation condition is mild and does not require high temperature sintering, and the preparation process is simple and energy saving; the prepared nano-wire has a diameter of only 2-3 nm, and contains organic groups so as to provide a material comprising hybridization of the organic groups and the inorganic groups; the nano-wire can generates fluorescence and wavelength blue shift, and has certain photocatalytic activity for reduction of CO2 after supporting 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 Applications(China)
IPC IPC(8): C01G17/00B82Y30/00
Inventor 周勇刘琪马玥邹志刚
Owner NANJING UNIV
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