کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7740036 1497992 2013 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of platinum nanoclusters and electrochemical investigation of their stability
ترجمه فارسی عنوان
سنتز نانوکیلرهای پلاتین و بررسی الکتروشیمیایی پایداری آنها
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
Platinum nanoclusters were synthesized using two methods: (a) ascorbic acid reduction of K2PtCl4, (b) an H2PtCl6 polyol process. Both processes yield clusters of platinum consisting of nanoparticles with a narrow size distribution. Experiments were conducted using platinum nanoclusters as the working electrode and bulk platinum wire as the counter electrode, both supported on inert, electronically conducting substrates. The electrodes were immersed in a PtCl4 + dimethyl sulfoxide electrolyte solution. The spacing between the electrodes was maintained at 1 mm or 6 mm. Electrical potential was measured across the two electrodes as a function of time. The samples (scraped off the nano-electrode) were examined using transmission electron microscopy (TEM). Experimental data show significantly lower kinetics of particle growth for the nanoclustered, uniformly sized particles as compared to commercially available carbon-supported platinum catalysts.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 240, 15 October 2013, Pages 618-629
نویسندگان
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