کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
611138 880667 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
One-pot synthesis of peroxo-titania nanopowder and dual photochemical oxidation in aqueous methanol solution
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
One-pot synthesis of peroxo-titania nanopowder and dual photochemical oxidation in aqueous methanol solution
چکیده انگلیسی

A sol–gel hydrothermal method was developed to synthesize peroxo-titania powders and their photooxidation performances were conducted in aqueous methanol solution under visible light irradiation. Three kinds of peroxo-titania were developed using TiO2 and H2O2 containing precursor sol with different dispersion mediums such as NH3 aq NaOH aq, or pure water. Peroxo-titania powder prepared with NH3 aq showed highest photooxidation activity. Moreover, we found unique photofunctional properties: together with formaldehyde production, the photo-excited electron also triggers oxygen evolution, although by TiO2 (Degussa P-25) photocatalysis H2 evolution was observed from the same solution.

Peroxo-titania powder catalyst synthesized in ammoniac solution showed high oxygen evolution under visible light irradiation. We have disclosed dual photofunctional properties: together with formaldehyde production, the photo-excited electron also triggers oxygen evolution.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 331, Issue 1, 1 March 2009, Pages 132–137
نویسندگان
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