Tuning the chemistry and configuration of oxide nanostructures for energy and environmental applications
EMSL Project ID
25688
Abstract
Materials development based on a fundamental understanding of their behavior has gained a new impetus with the advent of nanotechnology. Oxide nanostructures are among the most widely studied materials for their use in multifaceted applications such as catalysis, alternative energy sources like solid oxide fuel cells (SOFCs), sensors and lately in the bio-medical applications. The potential use of ceria, zirconia and titania systems has been proven in the fields of SOFC and catalysis applications. However, because some effects of synthesis route, impurities, particle stability and environmental effects are often ignored a clear understanding of their fundamental behavior at the nanoscale under different morphologies, configuration and environments are elusive. It is essential to study the chemistry of these materials, the role of dopants, functionalization, etc. in exploiting them most efficiently in various applications. In particular, the objectives of the proposed work are the following:• Develop the fundamental understanding of oxygen ionic conductivity as a function of chemistry and configuration of high quality trivalent doped single crystal ceria and zirconia thin film single and multi layered electrolytes
• Probe and tune the size, shape and structural variations in pure and doped ceria, titania systems generated using solution based methods
Project Details
Project type
Large-Scale EMSL Research
Start Date
2007-06-06
End Date
2010-09-30
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members
Related Publications
Inerbaev TM, AS Karakoti, SVNT Kuchibhatla, A Kumar, AE Masunov, and S Seal. 2015. "Aqueous medium induced optical transitions in cerium oxide nanoparticles." Physical Chemistry Chemical Physics. PCCP 17:6217-6221. doi:10.1039/C4CP04961F
Karakoti AS, SVNT Kuchibhatla, DR Baer, S Thevuthasan, DC Sayle, and S Seal. 2008. "Self-Assembly of Cerium Oxide Nanostructures in Ice Molds." Small 4(8):1210-1216. doi:10.1002/smll.200800219
Kuchibhatla SVNT, AS Karakoti, DC Sayle, H Heinrich, and S Seal. 2009. "Symmetry-Driven Spontaneous Self-assembly of Nanoscale Ceria Building Blocks to Fractal Super-octahedra." Crystal Growth & Design 9(3):1614-1620. doi:10.1021/cg801358z
Kuchibhatla SVNT, P Nachimuthu, F Gao, W Jiang, V Shutthanandan, MH Engelhard, S Seal, and S Thevuthasan. 2009. "Growth-Rate Induced Epitaxial Orientation of CeO2 on Al2O3(0001)." Applied Physics Letters 94(20):204101:1-3. doi:10.1063/1.3139073
Nandasiri MI, P Nachimuthu, T Varga, V Shutthanandan, W Jiang, SVNT Kuchibhatla, S Thevuthasan, S Seal, and AN Kayani. 2011. "Influence of growth rate on the epitaxial orientation and crystalline quality of CeO2 thin films grown on Al2O3(0001)." Journal of Applied Physics 109(1):013525:1-7. doi:10.1063/1.3525558
Sayle DC, BC Mangili, DW Price, AS Karakoti, SVNT Kuchibhatla, S Seal, Q Hao, Z Wang, X Xu, G Mobus, and TX Sayle. 2008. "Mapping Nanostructure: A Systematic Enumeration of Nanomaterials by Assembling Nanobuilding Blocks at Cystallographic Positions." ACS Nano 2(6):1237-1251. doi:10.1021/nn800065g