کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1664404 | 1008756 | 2015 | 53 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis, characterisation and electrochemical evaluation of reduced graphene oxide modified antimony nanoparticles
ترجمه فارسی عنوان
سنتز، مشخصات و ارزیابی الکتروشیمیایی کاهش نانوذرات آنژیوم اصلاح شده گرافیت گرافن
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
کاهش اکسید گرافین، نانوذرات آنتیموان، فیلم بی فلز، ولتاژ سنجی جمع کننده جذب کننده، طیف سنجی امپدانس الکتروشیمیایی، تجزیه و تحلیل پلاتین،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
چکیده انگلیسی
This paper demonstrates some aspects on the synthesis and characterisation of nanoparticles of metallic alloys using polyvinyl alcohol as a stabiliser, which combines high surface area and superior hybrid properties. The present experimental design was to synthesise a nanocomposite of reduced graphene oxide and antimony nanoparticles to be used as thin films for macro- and micro-carbon electrodes for enhancing sensing of different toxic metal pollutants in the environment. The synthetic process of reduced graphene oxide was done using the modified Hummers method while antimony pentachloride was reduced with sodium borohydride into nanoparticles of antimony using polyvinyl-alcohol as a stabiliser. The systematic investigation of morphology was done by scanning electron microscopy and high resolution-transmission electron microscope, which revealed the synthesis of a product, consists of reduced graphene oxide antimony nanoparticles. The electrochemical behaviour of the reduced graphene oxide antimony nanoparticles coated on a glassy carbon electrode was performed using voltammetric and impedance techniques. Electrochemical impedance measurements showed that the overall resistance, including the charge-transfer resistance, was smaller with reduced graphene oxide antimony nanoparticles than reduced graphene oxide and antimony nanoparticles, on their own. Evaluation of the reduced graphene oxide antimony nanoparticle sensor in the stripping voltammetry has shown a linear working range for concentration of platinum (II) between 6.0 Ã 10â 6-5.4 Ã 10â 5 μg Lâ 1 with limit of detection of 6 Ã 10â 6 μg Lâ 1 (signal-to-noise ratio = 3), which is below the World Health Organisation guidelines for freshwater.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 592, Part A, 1 October 2015, Pages 124-134
Journal: Thin Solid Films - Volume 592, Part A, 1 October 2015, Pages 124-134
نویسندگان
Bongiwe Silwana, Charlton van der Horst, Emmanuel Iwuoha, Vernon Somerset,