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

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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