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Preparation method and application of red phosphorus/gold nanoflower composite material

A technology for gold nanoflowers and composite materials, which is applied in the field of preparation of red phosphorus/gold nanoflower composite materials to achieve the effects of enhancing Raman signals, sensitive detection results, and reducing Raman detection limits

Pending Publication Date: 2022-02-08
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing red phosphorus / gold nanocomposites have been studied for their catalytic properties, but very few of them have been applied to the detection of tumor markers. This problem needs to be solved urgently

Method used

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  • Preparation method and application of red phosphorus/gold nanoflower composite material
  • Preparation method and application of red phosphorus/gold nanoflower composite material
  • Preparation method and application of red phosphorus/gold nanoflower composite material

Examples

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Effect test

Embodiment 1

[0028] A preparation method of red phosphorus / gold nanoflower composite material, comprising the following steps:

[0029] (1) Preparation of nano-red phosphorus by hydrothermal method

[0030] Red phosphorus was added to deionized water to make a red phosphorus solution with a concentration of 1 / 60 g / ml, which was then transferred to a Teflon-lined stainless steel autoclave and heated to 200 °C for 12 hours. Carry out centrifugation, wash the red precipitate obtained by centrifugation with deionized water and ethanol several times, and continue drying at 60°C for 12 hours to obtain nano-red phosphorus;

[0031] (2) Preparation of red phosphorus / gold nanoparticles by in situ deposition method

[0032] Add the nano-red phosphorus prepared in step (1) into deionized water, stir and ultrasonically peel off for 10 hours to obtain a nano-red phosphorus solution with a concentration of 1 g / L; at the same time, disperse chloroauric acid in deionized water to obtain a concentration o...

Embodiment 2

[0041] A preparation method of red phosphorus / gold nanoflower composite material, comprising the following steps:

[0042] (1) Preparation of nano-red phosphorus by hydrothermal method

[0043] Red phosphorus was added to deionized water to make a red phosphorus solution with a concentration of 1 / 60 g / ml, which was then transferred to a Teflon-lined stainless steel autoclave and heated to 200 °C for 12 hours. Carry out centrifugation, wash the red precipitate obtained by centrifugation with deionized water and ethanol several times, and continue drying at 60°C for 12 hours to obtain nano-red phosphorus;

[0044] (2) Preparation of red phosphorus / gold nanoparticles by in situ deposition method

[0045] Add the nano-red phosphorus prepared in step (1) into deionized water, stir and ultrasonically peel off for 10 hours to obtain a nano-red phosphorus solution with a concentration of 1 g / L; at the same time, disperse chloroauric acid in deionized water to obtain a concentration o...

Embodiment 3

[0051] A preparation method of red phosphorus / gold nanoflower composite material, comprising the following steps:

[0052] (1) Preparation of nano-red phosphorus by hydrothermal method

[0053] Red phosphorus was added to deionized water to make a red phosphorus solution with a concentration of 1 / 60 g / ml, which was then transferred to a Teflon-lined stainless steel autoclave and heated to 200 °C for 12 hours. Carry out centrifugation, wash the red precipitate obtained by centrifugation with deionized water and ethanol several times, and continue drying at 60°C for 12 hours to obtain nano-red phosphorus;

[0054] (2) Preparation of red phosphorus / gold nanoparticles by in situ deposition method

[0055] Add the nano-red phosphorus prepared in step (1) into deionized water, stir and ultrasonically peel off for 10 hours to obtain a nano-red phosphorus solution with a concentration of 1 g / L; at the same time, disperse chloroauric acid in deionized water to obtain a concentration o...

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Abstract

The invention discloses a preparation method and application of a red phosphorus / gold nanoflower composite material. The preparation method is characterized by comprising the following steps: (1) preparing nano red phosphorus by adopting a hydrothermal method; (2) preparing red phosphorus / gold nanoparticles by adopting an in-situ deposition method; and (3) preparing the red phosphorus / gold nano-flower composite material by adopting an anisotropic growth strategy: sequentially adding 1ml of the red phosphorus / gold nano-particle aqueous solution prepared in the step (2), 5ml of a 4-mercaptobenzoic acid solution and 12.5 ml of an ascorbic acid solution into 2.5 ml of a chloroauric acid solution, slightly shaking, enabling the mixture to react for 30 minutes, then washing with deionized water and ethanol for several times, and removing the modified 4-mercaptobenzoic acid molecules by photocatalysis to obtain the red phosphorus / gold nanoflower composite material. The red phosphorus / gold nanoflower composite material can be used for preparing a sandwich immune structure for detecting tumor markers, and has the advantage that the detection sensitivity of the tumor markers is improved.

Description

technical field [0001] The invention relates to a preparation method and application of a red phosphorus / gold nanoflower composite material. Background technique [0002] Due to the rapid development of surface plasmon resonance technology, surface-enhanced Raman scattering (SERS), with its unique fingerprint recognition, single-molecule-level detection sensitivity, non-destructive data acquisition, no need for complex instruments, and simple result analysis, has become an important tool in the field of tumor markers. The detection aspect shows a strong advantage and has received extensive attention. Compared with noble metals, semiconductors / noble metals with dual surface plasmon resonance effects are another surface-enhanced Raman scattering substrate material. The abundant tips on the surface of semiconductor / noble metal materials are conducive to the adsorption of trace molecules to be detected, and can also indirectly reduce the Raman detection limit. In particular, m...

Claims

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Application Information

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IPC IPC(8): G01N21/65C01B25/00B82Y40/00B82Y30/00B82Y15/00
CPCG01N21/658C01B25/003B82Y40/00B82Y30/00B82Y15/00
Inventor 姜涛李秀婷
Owner NINGBO UNIV
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