Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 216, Issue -, Pages 325-331Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2018.06.003
Keywords
Bacterial cellulose; Colorimetric sensor; Copper ion; Nanofiber; Test strip
Categories
Funding
- Development and Promotion of Science and Technology Talents Project (DPST) [06/2557]
- Institute for the Promotion of Teaching Science and Technology (IPST) [06/2557]
- Central Scientific Instrument Center (CSIC), Faculty of Science and Technology, Thammasat University
Ask authors/readers for more resources
A novel rhodamine B derivative (Rh-2) was synthesized. When used as a selective colorimetric sensor for Cu2+, a visible change from colorless to pink was observed. UV-visible and fluorescence spectroscopy demonstrated linear relationships between the concentrations of Cu2+ and Rh-2 in ethanol/water mixtures. Since naked eye detection is inexpensive and more convenient than spectroscopy, test strips were fabricated by immersing bacterial cellulose (BC) in Rh-2 and applying heat treatment. The resulting solid sensor was able to detect Cu2+ in water, visibly changing from colorless to pink. A linear correlation was found between color strength and Cu2+ concentration, when plotted on a log-log scale. No leaching of Rh-2 from BC was observed due to the strong affinity between the two. The BC had a more uniform nanofiber size and larger surface-area-to-volume ratio than the commonly-used cellulosic paper, making it a promising material for use in colorimetric sensors.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available