کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7142831 1462055 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation of flower-like Pt nanoparticles decorated chitosan-grafted graphene oxide and its electrocatalysis of hydrazine
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Preparation of flower-like Pt nanoparticles decorated chitosan-grafted graphene oxide and its electrocatalysis of hydrazine
چکیده انگلیسی
In this paper, a novel graphene oxide/chitosan/platinum (GO/CTS/Pt) nanocomposite was successfully synthesized by using CTS as protective agent and dispersant. Further, a hydrazine electrochemical sensor was constructed by immobilizing GO/CTS/Pt nanocomposites on a glassy carbon electrode (GCE). The morphology and composition of the nanocomposites were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD). The electrochemical investigations indicated that the GO/CTS/Pt modified GCE showed excellent electrocatalytic ability towards the oxidation of hydrazine. The current responses of the GO/CTS/Pt modified GCE towards the addition of hydrazine showed a wide linear range from 2.0 × 10−5 to 1.0 × 10−2 mol L−1 at a low applied potential of 0 V (versus SCE), and the low detection limit was 3.6 μmol L−1 at the signal-to-noise ratio of 3. Moreover, the sensor also exhibited good reproducibility, stability and selectivity for hydrazine sensing. This study suggests that the GO/CTS/Pt nanocomposites might be further applied to other fields with great potential.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 236, 29 November 2016, Pages 192-200
نویسندگان
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