کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5369061 1388419 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nano peel-off fabrication pattern with polymer overcoat layer on glassy carbon electrodes for Pt electrodeposition
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Nano peel-off fabrication pattern with polymer overcoat layer on glassy carbon electrodes for Pt electrodeposition
چکیده انگلیسی

This article describes a new technique for fabricating an electrocatalyst model in which the particle size and interparticle distance are controlled independently. We designed a uniform insulating polymer layer as a mask on an electroconductive glassy carbon substrate and then peeled off a part of the layer in nano-sized dots by scratching the overcoat layer using an atomic force microscope (AFM) cantilever. Pt particles electrodeposited only on the peeled off area of the glassy carbon. To peel-off a small area on the glassy carbon, a 29 ± 2 nm thick insulating polymer overcoat layer and a cantilever operating area of 10 nm × 10 nm were used, and the smallest peel-off area obtained was 30 nm × 30 nm. Thereafter, we performed the peel-off procedure on the polymer overcoat layer of the glassy carbon substrate having a cantilever operating area of 80 nm × 80 nm. Pt deposition of 100-150 nm in diameter was successfully achieved by adjusting the interparticle distance.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 255, Issue 22, 30 August 2009, Pages 9154-9158
نویسندگان
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