کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1654085 1517348 2006 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nanostructure SnO2 and supported Au catalysts: Synthesis, characterization, and catalytic oxidation of CO
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Nanostructure SnO2 and supported Au catalysts: Synthesis, characterization, and catalytic oxidation of CO
چکیده انگلیسی

Nanostructure tin dioxide (SnO2) powders prepared by sol-gel dialytic processes using tin (IV) chloride and anhydrous alcohol as start materials, ammonia gas as catalyst of the formation of colloid solution and agent of removing Cl−, and by introducing dialytic processes to improve and accelerate the formation of gels. From the result of TG–DTA analyses, the dried samples were calcined at 673 K in air for 3 h. Tin dioxide nanoparticles were characterized by thermogravimetry and differential thermal analyses (TG–DTA), X-ray diffraction (XRD), nitrogen adsorption–desorption, X-ray photoelectron spectroscopy (XPS). The average particle size of the as-prepared tin dioxide was about 5 nm. The as-prepared SnO2 possessed mesoporous structure and large surface area. The Au/SnO2 catalysts for low-temperature CO oxidation were prepared by the deposition–precipitation method using as-prepared SnO2 powders as the support. The Au/SnO2 catalysts exhibited high catalytic activity for low-temperature CO oxidation. The nanostructure SnO2 has promising applications in sensor, catalyst, catalytic support, mesoporous membranes, etc.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 60, Issues 13–14, June 2006, Pages 1706–1709
نویسندگان
, , , , , , ,