Influence of Aging and Environment on Nanoparticle Chemistry - Implication to Confinement Effects in Nanoceria.
作者： Satyanarayana V. N. T. Kuchibhatla , A. S. Karakoti , D. R. Baer , S. Samudrala , M. H. Engelhard
DOI: 10.1021/JP300725S
关键词:
摘要: The oxidation state switching of cerium in oxide nanoparticles is studied detail. influence synthesis medium, aging time and local environment on the switching, between +3 + 4, analyzed by tracking absorption edge using UV-Visible spectroscopy. It observed that tuning environment, chemistry could be altered. These dependent, environmentally induced changes likely contribute to inconsistencies literature regarding quantum-confinement effects for ceria nanoparticles. results this article indicate there a need carry out comprehensive analysis while considering processing conditions, environment.
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sci-hub.se 参考文章(36)
Scott A. Hayes, Pu Yu, Thomas J. O’Keefe, Matthew J. O’Keefe, James O. Stoffer, The Phase Stability of Cerium Species in Aqueous Systems I. E-pH Diagram for the Ce HClO 4 H 2 O System Journal of The Electrochemical Society. ,vol. 149, ,(2006) , 10.1149/1.1516775
C. T. Campbell, Chemistry. Oxygen vacancies and catalysis on ceria surfaces. Science. ,vol. 309, pp. 713- 714 ,(2005) , 10.1126/SCIENCE.1113955
Eiichi Saito, Benon H. J. Bielski, THE ELECTRON PARAMAGNETIC RESONANCE SPECTRUM OF THE HO2RADICAL IN AQUEOUS SOLUTION1 Journal of the American Chemical Society. ,vol. 83, pp. 4467- 4468 ,(1961) , 10.1021/JA01482A039
S. J. L. Billinge, I. Levin, The problem with determining atomic structure at the nanoscale. Science. ,vol. 316, pp. 561- 565 ,(2007) , 10.1126/SCIENCE.1135080
Avelino Corma, Pedro Atienzar, Hermenegildo García, Jean-Yves Chane-Ching, Hierarchically mesostructured doped CeO2 with potential for solar-cell use Nature Materials. ,vol. 3, pp. 394- 397 ,(2004) , 10.1038/NMAT1129
Qi Fu, Howard Saltsburg, Maria Flytzani-Stephanopoulos, Active nonmetallic Au and Pt species on ceria-based water-gas shift catalysts. Science. ,vol. 301, pp. 935- 938 ,(2003) , 10.1126/SCIENCE.1085721
J. W. Gryder, R. W. Dodson, The Kinetics of the Exchange Reaction between the Two Oxidation States of Cerium in Acid Solution1a Journal of the American Chemical Society. ,vol. 73, pp. 2890- 2895 ,(1951) , 10.1021/JA01150A138
Chenguo Hu, Zuwei Zhang, Hong Liu, Puxian Gao, Zhong Lin Wang, Direct synthesis and structure characterization of ultrafine CeO2 nanoparticles Nanotechnology. ,vol. 17, pp. 5983- 5987 ,(2006) , 10.1088/0957-4484/17/24/013
Satyanarayana V N T Kuchibhatla, Ajay S Karakoti, Sudipta Seal, Hierarchical assembly of inorganic nanostructure building blocks to octahedral superstructures-a true template-free self-assembly. Nanotechnology. ,vol. 18, pp. 075303- ,(2007) , 10.1088/0957-4484/18/7/075303
Roy W. Tarnuzzer, Jimmie Colon, Swanand Patil, Sudipta Seal, Vacancy engineered ceria nanostructures for protection from radiation-induced cellular damage Nano Letters. ,vol. 5, pp. 2573- 2577 ,(2005) , 10.1021/NL052024F