کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1515822 1511554 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Exfoliation of graphite by pyrolysis of bromine–graphite intercalation compounds in a vacuum glass tube
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Exfoliation of graphite by pyrolysis of bromine–graphite intercalation compounds in a vacuum glass tube
چکیده انگلیسی

Graphite intercalation compounds (GICs) of bromine were rapidly heat-treated and exfoliated at 500 °C in vacuum to obtain oxygen-free exfoliated graphite materials. We developed a continuous process—from intercalation to exfoliation—that could be conducted in a single glass tube without exposure to air so as to obtain oxygen-free exfoliated graphite products. It was possible to repeat the process of intercalation and exfoliation several times using bromine, which enabled large-scale exfoliation of graphite at 500 °C—comparable to that obtained from GICs produced from sulfuric acid.


► Graphite is exfoliated in vacuumed glass tube even at low temperature, 500 °C, under oxygen-free situation.
► Succeeded a continuous process from synthesis of GIC to exfoliation in same one glass tube.
► Also succeeded a repeat process of intercalation and exfoliation to exfoliate graphite as much as possible.
► Exfoliation degree, structure, and morphology were compared with typical exfoliation using sulfuric acid.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Physics and Chemistry of Solids - Volume 73, Issue 12, December 2012, Pages 1420–1423
نویسندگان
, , , ,