期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 168, 期 -, 页码 54-61出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2012.01.023
关键词
Calix[4]arene; Gold nanoparticles; Sulfide Detection; Microwave; Dynamic light scattering; Waste water treatment
资金
- UGC, New Delhi
An advanced and proficient colorimetric sulfide sensor based on gold nanoparticles (AuNP) modified calix[n]arene assembly has been designed and synthesized by generation of strongly binding dithiocarbamate(DTC). This molecular receptor competently and selectively recognizes sulfide ion via H-bonds. The assembly was characterized by TEM. DLS, UV-vis, FT-IR and H-1 NMR spectrometry which demonstrates the higher binding affinity for sulfide via hydrogen bonding. The optimum range for determination of sulfide is from pH 7 to 10. The lower detection limit is found to be 10 nM. This method is simple and relatively free from interference of closely associated ions and is successfully applied to the determination of sulfide in real samples of spiked water and leather waste water. (C) 2012 Elsevier B.V. All rights reserved.
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