具有高度选择性和敏感性的色度化学传感器,使用PVA/奇托桑离子印制的纳米纤维来检测和去除铜离子
Nargess Yousefi-Limaee1, Shohre Rouhani2,3, Ramtin Kamandi1
1Department of Environmental Research, Institute for Color Science and Technology, Tehran, Iran.
Heliyon
|August 22, 2024
概括
使用离子印制纳米纤维的新型色度化学传感器有效检测和去除铜离子 (Cu2+). 该传感器表现出高选择性和低检测极限,用于各种溶液中的微量铜.
科学领域:
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
- 环境科学 环境科学
背景情况:
- 铜离子 (Cu2+) 是重要的环境污染物,具有严格的监管限制.
- 开发选择性和敏感的Cu2+检测和去除方法对于环境监测和整治至关重要.
研究的目的:
- 开发一种高效的色度化学传感器,同时去除和检测Cu2+离子.
- 用离子印制的电纳米纤维来提高选择性和吸附能力.
主要方法:
- 制造一个聚合物复合物 (PVA/chitosan) 纳米纤维矩阵.
- 在Cu2+复合过程中加入一种特定的配体.
- 使用各种光谱和显微技术进行表征 (FTIR,EDX,SEM,AFM,DSC,TGA,XRD).
- 选择性,吸附能力,等温和和运动性研究的评估.
主要成果:
- 开发的铜印制纳米纤维 (Cu-INF) 传感器对Cu2+比其他金属离子具有很高的选择性.
- 传感器显示Cu2+的高吸附能力为128.205毫克g-1.
- 实现了 5 × 10-8 - 2 × 10-7 M 的线性检测范围和 1.07 × 10-8 M 的低检测极限 (LOD).
结论:
- 基于纳米纤维的颜色测量化学传感器是选择性Cu2+检测和去除的一个有希望的工具.
- 该传感器为微量铜离子分析提供了高效率,选择性和灵敏度.
- 这项技术具有环境监测和水处理应用的潜力.
更多相关视频
10:31Detection 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
28.1K
06:36Preparation of Expanded Chitin Foams and their Use in the Removal of Aqueous Copper
Published on: February 27, 2021
3.6K
相关概念视频
01:13Voltammetry: Stripping Methods
Anodic Stripping Voltammetry (ASV), Cathodic Stripping Voltammetry (CSV), and Adsorptive Stripping Voltammetry (AdSV) are electrochemical techniques used to determine trace amounts of analytes in solution. These methods involve applying a potential to an electrode and measuring the resulting current.
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
01:19Precipitation Titration: Endpoint Detection Methods
In argentometric precipitation titrations, endpoints can be detected visually by the Mohr, Volhard, and Fajans methods. In the Mohr method, adding a soluble chromate indicator gives an initial yellow color to the analyte solution. As the titrant is added, the first excess of silver ions forms a red silver chromate precipitate, marking the endpoint. The solution pH should be maintained at about 8 by adding solid CaCO3.
In the Volhard method, a standard excess of AgNO3 is first added to the...
In the Volhard method, a standard excess of AgNO3 is first added to the...
01:15High-Performance Liquid Chromatography: Types of Detectors
The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte properties and...