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Your search keyword '"Yang, Hongxiao"' showing total 7 results
Start Over Author "Yang, Hongxiao" Journal european journal of inorganic chemistry
7 results on '"Yang, Hongxiao"'

4. One-Pot Synthesis of Mn-Doped CeO2 Nanospheres for CO Oxidation.

Author

Zhang, Xueying, Wei, Jingjing, Yang, Hongxiao, Liu, Xiufang, Liu, Wei, Zhang, Cong, and Yang, Yanzhao

Subjects
ELECTRON microscopy, OXIDATION, CHEMICAL reactions, SPECTRUM analysis, PARTICLES (Nuclear physics)
Abstract

Ceria nanoparticles with 4 and 7 atom-% manganese dopant were synthesized through a template-free solvothermal method. The structure of the samples was characterized by powder X-ray diffraction (XRD). Monodispersed nanospheres of average size 130 nm were observed in transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), and field-emission scanning electron microscopy (FE-SEM) analyses. Manganese ions were introduced into the system and it is confirmed that the Mn species dissolve within the CeO2 lattice by Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). Furthermore, the as-obtained Mn-doped ceria nanoparticles revealed superior catalytic performance in CO oxidation in contrast with pure CeO2 prepared by the same route. [ABSTRACT FROM AUTHOR]

Published
2013
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5. Mesoporous CeO2Hollow Spheres Prepared by Ostwald Ripening and Their Environmental Applications

Author

Yang, Zhijie, Wei, Jingjing, Yang, Hongxiao, Liu, Ling, Liang, Hui, and Yang, Yanzhao

Abstract

CeO2hollow spheres 250–350 nm in diameter, with mesoporous shells of approximately 50 nm, were synthesized by a onepot, templatefree hydrothermal method. Xray diffraction XRD, Xray photoelectron spectroscopy XPS, transmission electron microscopy TEM, scanning electron microscopy SEM, high resolution transmission electron microscopy HRTEM, and nitrogen adsorption–desorption measurements were used to characterize the products. The formation of these hollow spheres involves the aggregation of the initial nanoparticles followed by solid evacuation driven by an Ostwald ripening process. The mesoporous CeO2hollow spheres showed an excellent adsorption capacity for organic pollutants Congo red from waste water about 84 mg Congo red per g CeO2. Furthermore, relative to commercial CeO2powders, the CeO2hollow spheres exhibited a higher catalytic activity towards CO oxidation.

Published
2010
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