دانلود مقاله ISI انگلیسی شماره 144489
ترجمه فارسی عنوان مقاله

تولید سونو فتوکاتالیتی هیدروژن با استفاده از رابط های اصلاح اکسید فلزی اصلاح شده

عنوان انگلیسی
Sono-photocatalytic production of hydrogen by interface modified metal oxide insulators
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
144489 2018 7 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Ultrasonics Sonochemistry, Volume 45, July 2018, Pages 279-285

پیش نمایش مقاله
پیش نمایش مقاله  تولید سونو فتوکاتالیتی هیدروژن با استفاده از رابط های اصلاح اکسید فلزی اصلاح شده

چکیده انگلیسی

Dielectric oxide materials are well-known insulators that have many applications in catalysis as well as in device manufacturing industries. However, these dielectric materials cannot be employed directly in photochemical reactions that are initiated by the absorption of UV–Vis photons. Despite their insensitivity to solar energy, dielectric materials can be made sono-photoactive even for low energy IR photons by modifications of the interfacial properties of dielectric materials by noble metals and metal oxides. In this investigation, by way of interface modification of dielectric MgO nanoparticles by Ag metal and Ag2O nanoparticles, IR photon initiated sono-photocatalytic activity of MgO is reported. The observed photocatalytic activity is found to be the synergic action of both IR light and sonication effect and sonication assisted a multi-step, sub-bandgap excitation of electrons in the MgO is proposed for the observed catalytic activity of Ag/Ag2O coated MgO nanoparticles. Our investigation reveals that other dielectric materials such as silver coated SiO2 and Al2O3 also exhibit IR active sono-photocatalytic activity.