Method for separating and detecting diphenylamine and rhodamine B by using gold nano channel

A gold nanochannel and diphenylamine technology, applied in the field of nanomaterials, can solve problems such as carcinogenesis and mutagenesis, and achieve the effects of great significance, good application prospects and convenient operation.

Inactive Publication Date: 2014-10-08
HUNAN CITY UNIV
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Problems solved by technology

Animal experiments have shown that the substance has carcinogenic effects when inhaled, and may cause mutagenesis and teratogenicity.

Method used

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  • Method for separating and detecting diphenylamine and rhodamine B by using gold nano channel
  • Method for separating and detecting diphenylamine and rhodamine B by using gold nano channel
  • Method for separating and detecting diphenylamine and rhodamine B by using gold nano channel

Examples

Experimental program
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Effect test

preparation example Construction

[0025] 1) Preparation of gold nanochannel membrane:

[0026] The chemical deposition method was used to deposit gold nanoparticles in the pore wall of the polycarbonate filter membrane (PCTE) template with a pore size of Φ50 nm to prepare gold nanochannels; the details were as follows: immerse PCTE in chromatographic grade methanol for 20 min for activation and cleaning; cleaning The final PCTE filter was immersed in 0.025 mol / L SnCl 2 and 0.007 mol / L CF 3 COOH methanol-water solution (V / V=1:1) SnCl 2 solution, placed in a constant temperature shaker at a speed of 150 r / min for 45 min to make the Sn 2+ Evenly adsorbed on the inner wall of the hole; rinsed with methanol for 3 times; then immersed the PCTE filter membrane in 0.029 mol / L Ag(NH 3 ) 2 + , while passing through N 2 , blow and wash for 15 min; take out the PCTE filter membrane, blow and wash 3-4 times with methanol and ultrapure water respectively, each time for 2-3 minutes, and then immerse the PCTE filter mem...

Embodiment

[0032] Separation of DPA and RhB:

[0033] A U-shaped pool is adopted, and the U-shaped pool is divided into two parts: the sample pool and the permeation pool. The mixed solution of DPA and RhB is added to the sample pool, and water is added to the permeation pool, and the concentration relationship is detected.

[0034] The above-mentioned functionalized hydrophobic gold nanochannel membrane was placed between the sampling cell and the permeation cell, and the effective permeation area of ​​the membrane was 0.196 cm 2 .

[0035] 2.09×10 respectively -5 mol / L DPA and 2.09×10 -5 3 mL of the mixed solution of mol / L RhB was placed in the sample pool, and 3 mL of water was placed in the permeation pool, and the DPA in the permeation pool was detected with a UV spectrophotometer every two hours (use a UV-Vis spectrophotometer at a wavelength of 281 nm measured at ) and RhB (measured at a wavelength of 554 nm with a UV-visible spectrophotometer), the relationship between the p...

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Abstract

The invention discloses a method for separating and detecting diphenylamine and rhodamine B by using a gold nano channel. A PC (polycarbonate) membrane is used as a template, and gold is deposited on hole walls of the PC membrane template with nano aperture by adopting a chemical deposition method to obtain a functional hydrophobic gold nano channel; diphenylamine serving as a hydrophobic molecule easily passes through the hydrophobic gold nano channel; the rhodamine B is a cationic compound, belongs to a hydrophilic molecule and can not migrate in the hydrophobic gold nano channel; separation of the diphenylamine and the rhodamine B is realized according to the difference of the hydrophobic property of the two; the transmission quantity of each of the diphenylamine and the rhodamine B passing through the gold nano channel is detected by using an ultraviolet detector. The method can be applied to the fields of contemporary medicinal chemistry, agricultural chemistry, food chemistry and biochemistry, and is particularly used for separating carcinogenic substances such as food dyes and protecting food safety and body health.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, in particular to a method for separating and detecting diphenylamine and rhodamine B by using gold nanochannels. Background technique [0002] A nanochannel refers to a pore or pipe structure with a pore size ranging from 0.1 to 100 nm. The special nano-effects have attracted more and more attention in the development of nanotechnology in the past 50 years. Due to its unique small size and physical and chemical properties, nanochannels show a high degree of superiority in the application of material physics, chemistry, and biomedicine. [0003] In recent years, nanochannel technology, as an important branch in the field of nanobiotechnology research, has attracted widespread attention internationally in recent years due to its unique structure and physical and chemical properties. Unique advantages are reflected in the research. There are few reports on the separation and detection of ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/00
Inventor 钟桐生黄杉生王亚东马腾飞杨乐乐
Owner HUNAN CITY UNIV
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