Microstructural Evolution of CeO2 from Porous Structures to Clusters of Nanosheet Arrays Assisted by Gas Bubbles via Electrodeposition

• Published in: Langmuir Vol. 24; no. 8; pp. 4254 - 4259
• Main Authors: Li, Gao-Ren, Qu, Dun-Lin, Yu, Xiao-Lan, Tong, Ye-Xiang
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 15.04.2008
• Subjects: Cerium - chemistry; Chemistry; Colloidal state and disperse state; Electrochemistry; Electroplating; Exact sciences and technology; Gases - chemistry; General and physical chemistry; Microscopy, Electron, Scanning; Microscopy, Electron, Transmission; Nanostructures - chemistry; Nanostructures - ultrastructure; Porosity; Porous materials; Spectrum Analysis; Surface physical chemistry; X-Ray Diffraction; Electronic properties; Magnetization; Saturation; Potential; Cerium oxide; Porous material; Template; Lanthanide compound; Bubble; Synthesis; Dynamics; Preparation; Electrochemistry; Electrodeposition; Structure; Magnetic properties
• ISSN: 0743-7463; 1520-5827
• DOI: 10.1021/la7037526

Here we report the preparation of porous CeO2 and clusters of CeO2 nanosheet arrays via a simple, efficient electrochemical approach. Gas bubbles functioning as a dynamic template were utilized in our research for the synthesis of nanosheet array clusters. The H c and M r values of porous CeO2 are almost the same as those of CeO2 nanosheet array clusters at 5 K, and they are about 5916 Oe and 8.83 × 10-4 emu, respectively. However, the saturation magnetization of CeO2 nanosheet array clusters is much larger than that of porous CeO2 structures. The magnetic property of the prepared CeO2 deposits may be caused by the existence of Ce(III), indicating potential interest in the nanodevices because of their electronic and magnetic properties.