کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1290188 | 973320 | 2008 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Platinum nanophase electro catalysts and composite electrodes for hydrogen production
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کلمات کلیدی
LPGHMSOMCBrunauer–Emmett–Teller methodSEM–EDS - SEM-EDSComposite electrode - الکترود کامپوزیتElectrolysis of water - الکترولیز آبHydrogen production - تولید هیدروژنCVD - رسوب دهی شیمیایی بخار Chemical vapour deposition - رسوبات بخار شیمیاییOrdered mesoporous carbon - سفارش کربن mesoporousHexagonal mesoporous silica - سیلیکا مزوپور شش ضلعیBET - شرطXRD - پراش اشعه ایکسX-ray diffraction - پراش اشعه ایکسLiquid petroleum gas - گاز مایع
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Platinum nanophase electro catalysts and composite electrodes for hydrogen production Platinum nanophase electro catalysts and composite electrodes for hydrogen production](/preview/png/1290188.png)
چکیده انگلیسی
Nanophase Pt electro catalysts were prepared by impregnating a Pt salt containing solution upon a high surface area hexagonal mesoporous silica (HMS) matrix, which was then carbonized to varying degree by chemical vapour deposition of liquid petroleum gas (LPG). Thereafter the HMS Si matrix could be removed by chemical etching with NaOH to immediately form a Pt containing carbon analogue or ordered mesoporous carbon (OMC) with a porous structure similar to the parent HMS. Nanoparticles of Pt electro catalysts were thus successfully stabilized without agglomeration on both HMS and upon the porous HMS carbon analogue or OMC, which was graphitic in nature. The catalysts were electro active for the hydrogen evolution reaction and their activity compared favourable with an industry standard. Such nanophase Pt electro catalysts could be incorporated successfully in a composite electrode by sequential deposition, upon a suitable substrate and the catalysts in electrodes so formed proved to be stable and active under high-applied potential in high electrolyte environment for hydrogen production by electrolysis of water. This route to preparing a nanophase Pt OMC catalyst may be applicable to prepare active electro catalysts for polymer electrolyte fuel cells and solid polymer electrolyte electrolyzers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 185, Issue 2, 1 December 2008, Pages 838-845
Journal: Journal of Power Sources - Volume 185, Issue 2, 1 December 2008, Pages 838-845
نویسندگان
L.F. Petrik, Z.G. Godongwana, E.I. Iwuoha,