Browsing Physics by Author "Waghmare, U.V."

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Origin of enhanced reducibility/oxygen storage capacity of Ce(1-x)Ti(x)O(2) compared to CeO(2) or TiO(2)

Dutta, G.; Waghmare, U.V.; Baidya, T.; Hegde, M.S.; Priolkar, K.R.; Sarode, P.R. (Chemistry of Materials. 18(14); 2006; 3249-3256.)

We determine chemical origins of increase in the reducibility of CeO(2) upon Ti substitution using a combination of experiments and first-principles density functional theory calculations. Ce(1-x)Ti(x)O(2) ( x = 0.0-0.4) ...
Reducibility of Ce(1-x)Zr(x)O(2): origin of enhanced oxygen storage capacity

Dutta, G.; Waghmare, U.V.; Baidya, T.; Hegde, M.S.; Priolkar, K.R.; Sarode, P.R. (Catalysis Letters. 108(41702); 2006; 165-172.)

We combine first-principles calculations with EXAFS studies to investigate the origin of high oxygen storage capacity in ceria-zirconia solid solution, prepared by solution combustion method. We find that nanocrystalline ...
Structural investigation of activated lattice Oxygen in Ce(1-x)Sn(x)O(2) and Ce(1-x-y)Sn(x)Pd(y)O(2-delta) by EXAFS and DFT calculation

Gupta, A.; Hegde, M.S.; Priolkar, K.R.; Waghmare, U.V.; Sarode, P.R.; Emura, S. (Chemistry of Materials. 21(24); 2009; 5836-5847.)

Substitution of Sn4+ ion in CeO(2) creates activated oxygen in Ce(0.8)Sn(0.2)O(2) leading to higher oxygen storage capacity compared to Ce(0.8)Zr(0.2)O(2). With Pd ion substitution in Ce(0.8)Sn(0.2)O(2), activation of ...

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