Mesoporous CeO2 nanoparticles synthesized by an inverse miniemulsion technique and their catalytic properties in methane oxidation

Cerium(IV) oxide nanoparticles were synthesized using an inverse miniemulsion technique with cerium nitrate hexahydrate as precursor. The resulting nanocrystallites are as small as 5 nm with a specific surface area of 158 m² g⁻¹ after calcination at 400 °C. With the addition of cetyltrimethylammoniu...

Full description

Saved in:
Bibliographic Details
Published in:Nanotechnology 2011-04, Vol.22 (13), p.135606-135606
Main Authors: Nabih, Nermeen, Schiller, Renate, Lieberwirth, Ingo, Kockrick, Emanuel, Frind, Robert, Kaskel, Stefan, Weiss, Clemens K, Landfester, Katharina
Format: Article
Language:English
Subjects:
Catalysis
Cerium - chemistry
Methane - chemistry
Nanoparticles - chemistry
Nanoparticles - ultrastructure
Nanotechnology - methods
Oxidation-Reduction
Porosity
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Cerium(IV) oxide nanoparticles were synthesized using an inverse miniemulsion technique with cerium nitrate hexahydrate as precursor. The resulting nanocrystallites are as small as 5 nm with a specific surface area of 158 m² g⁻¹ after calcination at 400 °C. With the addition of cetyltrimethylammonium bromide (CTAB) or (poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide)) triblock copolymers (PEO-PPO-PEO) as template in the miniemulsion droplets, the specific surface area can be increased up to 255 m² g⁻¹. The miniemulsions were characterized by dynamic light scattering (DLS) and the obtained oxides were examined by x-ray diffraction (XRD), nitrogen sorption (BET and BJH), and transmission electron microscopy (TEM). The catalytic activity of the resulting ceria was investigated for the temperature-programmed oxidation (TPO) of methane.
ISSN:0957-4484
1361-6528
DOI:10.1088/0957-4484/22/13/135606