相关实验视频

Updated: Jun 23, 2025

Quantitative SERS Detection of Uric Acid via Formation of Precise Plasmonic Nanojunctions within Aggregates of Gold Nanoparticles and Cucurbit[n]uril

Quantitative SERS Detection of Uric Acid via Formation of Precise Plasmonic Nanojunctions within Aggregates of Gold Nanoparticles and Cucurbit[n]uril

Published on: October 3, 2020

基于Ag/Ag₂O-COF复合物SERS基质的乌拉尼尔离子的高度敏感和选择性测定

Tao Gai¹, Jiaolai Jiang¹, Shaofei Wang¹

¹Institute of Materials, China Academy of Engineering Physics, PO Box 9071-11, Mianyang, PR China.

|June 15, 2024

概括

这项研究引入了一种新的Ag/Ag2O-COF复合物SERS基质,用于检测水中的乌拉尼尔离子. 该方法在环境样本中提供了高灵敏度和选择性的微量乌拉尼尔分析.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
分析化学分析化学

背景情况:

在民用和军事应用中的双重用途需要强有力的环境监测.
与相关的潜在安全问题需要环境保护和核工业的敏感检测方法.

研究的目的:

开发一种敏感和选择性的SERS基质,用于检测环境水溶液中的烯离子 (UO2^2+).
将Ag/Ag2O的强大的表面增强拉曼散射 (SERS) 效应与共价有机框架 (COF) 的吸附能力相结合.

主要方法:

使用COF TpPa-1制造一个Ag/Ag2O-COF复合SERS基质.
使用基质通过SERS在水溶液中检测基离子的微量检测.
评估基质的性能,包括线性范围,检测极限和来自其他离子的干扰.

主要成果:

Ag/Ag2O-COF复合物对吸附的乌兰离子表现出强烈的SERS效应.
基板实现了 10^-8 到 10^-6 mol L^-1 的线性检测范围,用于乌兰离子.
获得了8.9 x 10^-10 mol L^-1的低检测极限,常见金属离子和氧离子的干扰最小.

结论:

开发的Ag/Ag2O-COF复合物SERS基质对环境水样中的离子微量检测有效.
基板具有高灵敏度,选择性和可重复使用性,使其适合环境监测.
这种多功能系统有可能用于其他拉曼活性物质的微量检测.

关键词:

在Ag/Ag(2)OCOF复合材料中.在 COF TpPa-1 中.定量检测检测量检测量检测量检测量检测量检测量这就是 SERS SERS.乌兰尼兰是什么意思乌兰尼兰是什么意思

更多相关视频

Detection and Recovery of Palladium, Gold and Cobalt Metals from the Urban Mine Using Novel Sensors/Adsorbents Designated with Nanoscale Wagon-wheel-shaped Pores

Detection and Recovery of Palladium, Gold and Cobalt Metals from the Urban Mine Using Novel Sensors/Adsorbents Designated with Nanoscale Wagon-wheel-shaped Pores

Published on: December 6, 2015

An Efficient Method for Selective Desalination of Radioactive Iodine Anions by Using Gold Nanoparticles-Embedded Membrane Filter

An Efficient Method for Selective Desalination of Radioactive Iodine Anions by Using Gold Nanoparticles-Embedded Membrane Filter

Published on: July 13, 2018

相关概念视频

Extraction: Advanced Methods

Extraction: Advanced Methods

Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...

Precipitation and Co-precipitation

Precipitation and Co-precipitation

Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...