Selenium nano-sensing material and preparation method thereof

Abstract

The invention relates to a selenium nano-sensing material and a preparation method thereof and belongs to the field of preparation of silicon dioxide nanometer materials. According to the selenium nano-sensing material, an N-phenyl-2-(4'-methyl-2'-formyl)-phenoxyl acetamide compound serving as a selenium fluorescence detection probe is embedded into silicon dioxide nano-particles, so that the embedded selenium (Se) nano-sensing material is formed. The preparation method comprises three steps of synthesizing N-phenyl-2-chloroacetamide, synthesizing N-phenyl-2-(4'-methyl-2'-formyl)-phenoxyl acetamide and preparing the embedded selenium nano-sensing material. The preparation method is simple and safe in operation and high in repeatability; the defects of toxicity, poor optical chemical stability and the like caused by that the traditional organic matter directly serves as a sensor are overcome; the Se element under the inorganic environment can be detected; and the Se in the organism can be subjected to imaging research.

Description

technical field [0001] The invention belongs to the field of preparation of silicon dioxide nanomaterials, and in particular relates to a carbon dioxide using N-phenyl-2-(4'-methyl-2'-formyl)-phenoxyacetamide as a Se detection probe. Inverse Microemulsion Synthesis Method for Silicon Sensing Materials. Background technique [0002] Inverse microemulsion, also called water-in-oil microemulsion, is a thermodynamically stable, isotropic single-phase system composed of a small amount of water, a large amount of oil and a surfactant. Surfactant molecules reduce the interfacial tension between water and oil, making the whole system a transparent solution. Nanoscale water droplets are formed in the bulk oil phase, surrounded by surfactants, like a cage-like environment, and then dispersed into the bulk oil phase and serve as nanoreactors for nanoparticle synthesis. [0003] Silica is not attacked by bacteria, and silica nanoparticles do not swell or change pores with changes in e...

AI Technical Summary

Problems solved by technology

[0006] There are still big problems in the direct determination of some complex liquid samples such as natural water and some extract solutions, because the concentration of selenium in the sample is too low, and the complexity of the sample itself, selenium in the solution is usually measured by spectrophotometry techniques including graphite furnace atomic absorption spectrometry (GFAAS), hydrogenation atomic absorption spectrometry (HGAAS), inductively coupled plasma mass spectrometry (ICP-MS), and atomic fluorescence spectrometry (AFS), although these The technique is sufficiently sensitive to trace amounts of selenium, but the complexity of the environmental sample itself can seriously interfere with the measurement itself

Images