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- Title
A recyclable colorimetric sensor made of waste cotton fabric for the detection of copper ions.
- Authors
Jiang, Xiangyang; Zhao, Ziyi; Liao, YuXiao; Tang, Chuchu; Tremblay, Pier-Luc; Zhang, Tian
- Abstract
A large quantity of waste cotton fabric (WCF) generated every year in the world is either incinerated or buried leading to pollution and resource wastes. Here, in order to develop a recycling avenue for WCF, a simple, easy-to-use, and portable sensor was designed for the colorimetric detection of toxic Cu2+ in water and food. The sensor (WCF-CPZ) was prepared by coating the surface of WCF with the chromogenic copper chelator cuprizone (CPZ). The results showed that the naked-eye detection limit of the WCF-CPZ sensor for Cu2+ in drinking water was 0.5 mg/L. With image analysis by a smartphone, the quantitative limit of detection of the WCF-CPZ sensor was improved to 0.13 mg/L, which is well below the maximum Cu2+ concentration allowed by the World Health Organization in drinking water of 2.0 mg/L. The WCF-CPZ sensor was also successfully employed for the detection of Cu2+ in lake water and milk samples with an accuracy of more than 92%. Moreover, the robust and sustainable WCF support could be stripped and reused multiple times for colorimetric assays without sensitivity losses.
- Subjects
WORLD Health Organization; COPPER ions; COTTON textiles; DETECTORS; COLORIMETRY; DETECTION limit; IMAGE analysis
- Publication
Cellulose, 2022, Vol 29, Issue 9, p5103
- ISSN
0969-0239
- Publication type
Article
- DOI
10.1007/s10570-022-04572-z