کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10269142 | 459718 | 2011 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hydrothermal synthesis of well-stable silver nanoparticles and their application for enzymeless hydrogen peroxide detection
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We reported on a facile hydrothermal synthesis of well-stable silver nanopartiles (AgNPs) from an aqueous solution of AgNO3 and poly[(2-ethyldimethylammonioethyl methacrylate ethyl sulfate)-co-(1-vinylpyrrolidone)] (PQ11), a kind of cationic polyelectrolyte, at 100 °C without the extra introduction of other reducing agents and protective agents. Transmission electron microscopy (TEM) observation reveals that the AgNPs thus formed mainly consist of small nanoparticles about 5 nm in diameter. It is found that such dispersion can form stable AgNPs-embedded films on bare electrode surfaces and these nanoparticles exhibit remarkable catalytic performance for hydrogen peroxide (H2O2) detection. The sensor has a fast amperometric response time of less than 2 s. The linear range is estimated to be from 1 Ã 10â4 M to 0.18 M (r = 0.998) and the detection limit is estimated to be 3.39 Ã 10â5 M at a signal-to-noise ratio of 3, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 56, Issue 5, 1 February 2011, Pages 2295-2298
Journal: Electrochimica Acta - Volume 56, Issue 5, 1 February 2011, Pages 2295-2298
نویسندگان
Wenbo Lu, Fang Liao, Yonglan Luo, Guohui Chang, Xuping Sun,