کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1283480 1497640 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hydrogen storage of nanostructured TiO2-impregnated carbon nanotubes
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Hydrogen storage of nanostructured TiO2-impregnated carbon nanotubes
چکیده انگلیسی

Hydrogen uptake study of carbon nanotubes (CNTs) impregnated with TiO2-nanorods and nanotubes has been performed at room temperature and moderate hydrogen pressures of 8–18 atm. Under hydrothermal synthesis conditions, nanorods (NRs) and nanoparticles (NPs) are found to form either of the two polymorphic phases, i.e., nanorods are formed of predominantly anatase phase while nanoparticles are formed of rutile phase. NRs and NPs are introduced into the CNT matrix via the wetness-impregnation method. These composites store up to 0.40 wt.% of hydrogen at 298 K and 18 atm, which is nearly five times higher the hydrogen uptake of pristine CNTs. The excess amount of hydrogen stored in TiO2-impregnated CNTs is determined from the amount of TiO2 in the sample and the measured hydrogen uptake of TiO2 nanoparticles. Higher hydrogen uptake of NP-impregnated CNTs when compared pristine CNTs is accounted for by considering initial binding of hydrogen on TiO2 and subsequent spillover in CNT–TiO2-NPs.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 34, Issue 2, January 2009, Pages 961–966
نویسندگان
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