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المؤلفMatin M.A.
المؤلفSaad M.A.H.S.
المؤلفKumar A.
المؤلفAl-Marri M.J.
المؤلفMansour S.A.
تاريخ الإتاحة2020-04-05T10:53:21Z
تاريخ النشر2019
اسم المنشورApplied Surface Science
المصدرScopus
الرقم المعياري الدولي للكتاب1694332
معرّف المصادر الموحدhttp://dx.doi.org/10.1016/j.apsusc.2019.06.213
معرّف المصادر الموحدhttp://hdl.handle.net/10576/13817
الملخصWe report the effect of combustion synthesis conditions on Pt nanoparticle (NP) supported on ZnO (Pt/ZnO) electrocatalysts for methanol oxidation reaction (MOR). The Pt/ZnO NPs are prepared by solution combustion synthesis (SCS) using metal nitrate precursors and glycine fuel, which is varied with a fixed Pt:Zn ratio at 1:1 for fuel-high (Pt/ZnO (H)) and fuel-low (Pt/ZnO (L)) electrocatalysts. X-ray diffractometry, transmission electron microscopy and scanning electron microscopy are used for crystallite size, particle distribution and elemental composition studies, respectively. High angle annular dark field-scanning transmission electron microscopy attached to energy dispersive X-ray spectroscopy was used for elemental distribution in Pt/ZnO NPs and X-ray photoelectron spectroscopy (XPS) was used to identify the surface composition and electronic state of the elements. Cyclic voltammetry is applied for the electrocatalysis of CH3OH in an alkaline medium, which reveals that Pt/ZnO (H) system has an improved MOR activity in comparison to commercial Pt/C. The onset potential of MOR on Pt/ZnO is earlier than that of Pt/C. The stability test conducted by chronoamperometry on Pt/ZnO and Pt/C shows a stable high current density for Pt/ZnO (H) compared to Pt/C and Pt/ZnO (L). The crystallite size, surface morphology and the electrochemical properties of Pt/ZnO samples are affected by the variation in the fuel amount during synthesis. - 2019 Elsevier B.V.
راعي المشروعThis publication was made possible by NPRP grant ( NPRP8-509-2-209 ) from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of the author(s). The authors would also like to gratefully acknowledge the Central Laboratory Unit (CLU) at Qatar University and Qatar Environment and Energy Research Institute (QEERI) at Qatar Foundation for services related to SEM/TEM and STEM-HAADF-EDS analyses, respectively.
اللغةen
الناشرElsevier B.V.
الموضوعDirect methanol fuel cell and solution combustion synthesis
Glycine
Platinum
Zinc
العنوانEffect of fuel content on the electrocatalytic methanol oxidation performance of Pt/ZnO nanoparticles synthesized by solution combustion
النوعArticle
الصفحات73-81
رقم المجلد492
dc.accessType Abstract Only


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