@article{oai:kutarr.kochi-tech.ac.jp:00000276,
 author = {Pradeep, Ellawala K. C. and Habu, Teppei and Tooriyama, Hiroko and Ohtani, Masataka and Kobiro, Kazuya},
 journal = {The Journal of Supercritical Fluids},
 month = {Feb},
 note = {CeO_2-ZrO_2 composite nanoparticles with mesoporous and spherical morphologies were assembled into different homogeneously dispersed, domain, and core-shell structures by changing the reaction conditions, such as the heating rate, acid, and solvent, in supercritical alcohols. Ce_xZr_<1−x>O_2 with homogeneous structures were prepared from Ce(NO_3)_3 and ZrO(NO_3)_2 in the presence of formic acid in methanol by rapid heating (500℃/min) to 300℃, while CeO_2–ZrO_2 with domain structures were obtained by slow heating (5.4℃/min). Treatment of mesoporous and spherical ZrO_2 nanoparticles with a Ce(NO_3)_3 solution in supercritical conditions yielded CeO_2-ZrO_2 nanocomposites with core-shell morphologies, while solvents playing a key role in controlling the thickness of the outer shell; methanol produced a very thin outer shell (<1 nm) of cubic CeO_2 and 2-propanol afforded a thick outer shell (100-200 nm) of cubic CeO_2.},
 pages = {217--223},
 title = {Ultra-simple synthetic approach to the fabrication of CeO_2-ZrO_2 mixed nanoparticles into homogeneous, domain, and core-shell structures in mesoporous spherical morphologies using supercritical alcohols},
 volume = {97},
 year = {2015}
}