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Triazole functionalized gold nanoparticles for colorimetric Cr3+ sensing.
- Source :
-
Sensors & Actuators B: Chemical . Nov2013, Vol. 188, p354-359. 6p. - Publication Year :
- 2013
-
Abstract
- Abstract: Triazole functionalized gold nanoparticles (NTP@AuNPs) were synthesized through a click reaction and have been developed for sensitive and selective colorimetric Cr3+ detection. Gold nanoparticles were prepared by reducing HAuCl4 with sodium citrate and then using 4-(prop-2-ynyloxy)pyridine (PP) as the capping agent. The acetylene part of PP and the azide part of 1-(azidomethyl)-4-nitrobenzene were combined to form a triazole structure through a click reaction. Aggregation of NTP@AuNPs was induced immediately in the presence of Cr3+ ions, yielding a color change from red to purple. This Cr3+-induced aggregation of NTP@AuNPs was first monitored using the naked eye and then UV–vis spectroscopy with a detection limit of 1.4μM. In addition, NTP@AuNPs were also used to detect Cr3+ in lake water samples, with low interference. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09254005
- Volume :
- 188
- Database :
- Academic Search Index
- Journal :
- Sensors & Actuators B: Chemical
- Publication Type :
- Academic Journal
- Accession number :
- 90635544
- Full Text :
- https://doi.org/10.1016/j.snb.2013.06.088