Blue niobium pentoxide, and preparation method and application thereof

A niobium pentoxide and blue technology, applied in the field of niobium pentoxide, can solve problems such as the inability to use visible light and near-infrared light energy, medical application limitations, etc., and achieve mass production, low price, and broad application prospects Effect

Active Publication Date: 2020-05-15
苏州机数芯微科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the wide band gap (greater than 3.4eV), it can only absorb 4% of the ultraviolet light (wavelength less than 400nm) in the solar spectrum to generate active oxygen, so it cannot use the energy of visible light and near-infrared light, resulting in its medical application being extremely limited. big limit

Method used

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  • Blue niobium pentoxide, and preparation method and application thereof
  • Blue niobium pentoxide, and preparation method and application thereof
  • Blue niobium pentoxide, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of preparation method of blue niobium pentoxide, comprises the steps: with 0.3g NbCl 5 Dissolve in 50mL of absolute ethanol, put it in an oven at 60°C for 6 hours to completely evaporate the absolute ethanol, and obtain the amorphous niobium oxide precursor; wash the amorphous niobium oxide precursor, dry it, and then put it into a corundum crucible Inside, put it in a high-temperature muffle furnace, raise the temperature to 500°C at a rate of 5°C / min, heat-preserve and calcinate for 3 hours, and cool down to room temperature to obtain white niobium pentoxide; add 0.1g of white niobium pentoxide to a concentration of 4M hydrochloric acid Ultrasonic disperse in the aqueous solution, then add 0.2g of zinc powder, stir for 10 minutes, centrifuge, take the precipitate, wash, and dry to obtain blue niobium pentoxide.

[0030] Take the above-mentioned blue niobium pentoxide and white niobium pentoxide for detection, the results can be found in Figure 1-2 , figure 1...

Embodiment 2

[0035] A kind of preparation method of blue niobium pentoxide, comprises the steps: with 0.5g NbCl 5 Dissolve in 50mL of absolute ethanol, put it in an oven at 60°C for 12 hours to completely evaporate the absolute ethanol, and obtain the amorphous niobium oxide precursor; wash the amorphous niobium oxide precursor, dry it, and then put it into a corundum crucible Inside, put it in a high-temperature muffle furnace, raise the temperature to 600°C at a rate of 5°C / min, keep the heat for calcination for 4 hours, and cool down to room temperature to obtain white niobium pentoxide; add 0.2g of white niobium pentoxide to a concentration of 4M hydrochloric acid Ultrasonic disperse in the aqueous solution, then add 0.3g of zinc powder, stir for 15 minutes, centrifuge, take the precipitate, wash it, and dry it to obtain blue niobium pentoxide.

Embodiment 3

[0037] A kind of preparation method of blue niobium pentoxide, comprises the steps: with 0.1g NbCl 5 Dissolve in 50mL of methanol, put it in an oven at 60°C for 5h to completely evaporate the methanol, and obtain the amorphous niobium oxide precursor; wash the amorphous niobium oxide precursor, dry it, put it into a corundum crucible, and place In a high-temperature muffle furnace, heat up to 580°C at a rate of 10°C / min, heat-preserve and calcine for 2 hours, and cool down to room temperature to obtain white niobium pentoxide; add 0.3g of white niobium pentoxide to 6M hydrochloric acid aqueous solution for ultrasonic dispersion , then add 0.1g magnesium powder, stir for 20min, centrifuge, take the precipitate, wash, dry to obtain blue niobium pentoxide.

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Abstract

The invention discloses a preparation method of blue niobium pentoxide. The preparation method comprises the following steps: taking an amorphous niobium oxide precursor, heating to 500-600 DEG C, andcalcining for 2-4 h to obtain white niobium pentoxide; and adding the white niobium pentoxide into an aqueous hydrochloric acid solution, performing ultrasonic dispersion, then adding metal powder, stirring for 5 min or above, centrifuging, and taking, washing and drying the obtained precipitate to obtain the blue niobium pentoxide. The invention further discloses the blue niobium pentoxide is prepared according to the method. The invention also discloses an application of the blue niobium pentoxide in preparation of a photothermal conversion material. The method is simple in process, free ofdangerous reagents, low in raw material cost, short in production period and capable of achieving industrial large-scale rapid production; the blue niobium pentoxide has a strong absorption effect onvisible light and near-infrared light; and the blue niobium pentoxide has good dispersibility and stability in water, has biocompatibility, and has a wide application prospect in the biomedical fields of photothermal therapy and the like.

Description

technical field [0001] The invention relates to the technical field of niobium pentoxide, in particular to a blue niobium pentoxide and its preparation method and application. Background technique [0002] Niobium pentoxide (Nb 2 o 5 ) As a new bioceramic material, it has good biocompatibility, high strength, wear resistance and chemical stability, and has attracted strong interest of researchers and medical circles for a long time. Because of Nb 2 o 5 With excellent photocatalytic activity, it can generate a large amount of reactive oxygen species under ultraviolet light irradiation, thereby inducing the death of cancer cells, and can be used as a photothermal conversion agent for photothermal therapy of tumors. However, due to the wide band gap (greater than 3.4eV), it can only absorb 4% of the ultraviolet light (wavelength less than 400nm) in the solar spectrum to generate active oxygen, so it cannot use the energy of visible light and near-infrared light, resulting i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G33/00
CPCC01G33/00C01P2004/04C01P2004/01
Inventor 朱青陈晓露李磊磊杨丽
Owner 苏州机数芯微科技有限公司
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