کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7148380 1462102 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Triazole functionalized gold nanoparticles for colorimetric Cr3+ sensing
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Triazole functionalized gold nanoparticles for colorimetric Cr3+ sensing
چکیده انگلیسی
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 1.4 μM. In addition, NTP@AuNPs were also used to detect Cr3+ in lake water samples, with low interference.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 188, November 2013, Pages 354-359
نویسندگان
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