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dc.contributor.authorDougherty, Troy Allen
dc.contributor.authorBaker, Richard
dc.date.accessioned2024-04-09T10:32:43Z
dc.date.available2024-04-09T10:32:43Z
dc.date.issued2024-04-09
dc.identifier301035601
dc.identifier7e2e5691-3160-4399-bd50-bc401ec06771
dc.identifier.citationDougherty , T A & Baker , R 2024 , ' Ordered mesoporous ceria and cerium gadolinium oxide prepared by vacuum-assisted nanocasting ' , Nanomaterials , vol. 14 , no. 8 , 651 . https://doi.org/10.3390/nano14080651en
dc.identifier.issn2079-4991
dc.identifier.otherORCID: /0000-0002-3304-3280/work/157578776
dc.identifier.urihttps://hdl.handle.net/10023/29620
dc.description.abstractFour ceria-based mesoporous oxide materials were prepared using a new vacuum impregnation (VI) templating method developed by the authors, namely, vacuum-assisted nanocasting (VAN). Two hard templates (SBA-15 and KIT-6) were employed, and products with compositions CeO2 and Ce0.9Gd0.1O1.9 (CGO) were made with each. The desired fluorite phase and composition were confirmed by powder XRD and EDS. The product structures were characterised by XRD, TEM, gas physisorption and SAXS. All products contained ordered mesoporous material in high yields. The specific surface areas (SSAs) and pore volumes of the products were determined to be high and the pore size and pore spacings related well to the templates from which the materials were synthesised. The TEM studies confirmed that the samples had a 3D pore structure, with this being the negative of the original template. The target materials were not only produced in high yields, but also displayed a porous single-crystal morphology with non-linear lattice planes. The highest SSA values and pore volumes were reported for materials impregnated using the KIT-6 template and with the CGO composition. The results suggest that VAN is an excellent and reproducible method for producing ordered mesoporous cerias and has considerable potential for wider application. All the mesoporous products showed dramatically increased reducibility in TPR experiments compared with a high-SSA nanoparticulate ceria reference. This is very promising for their potential applications in oxidation catalysts and in fuel cell components
dc.format.extent18
dc.format.extent9496700
dc.language.isoeng
dc.relation.ispartofNanomaterialsen
dc.subjectVacuum impregnationen
dc.subjectMesoporous materialsen
dc.subjectCeriaen
dc.subjectCGOen
dc.subjectCatalysisen
dc.subjectElectron microscopyen
dc.subjectOxidationen
dc.subjectGas physisorptionen
dc.subjectQD Chemistryen
dc.subjectRR-NDASen
dc.subject.lccQDen
dc.titleOrdered mesoporous ceria and cerium gadolinium oxide prepared by vacuum-assisted nanocastingen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. Centre for Energy Ethicsen
dc.contributor.institutionUniversity of St Andrews. St Andrews Sustainability Instituteen
dc.contributor.institutionUniversity of St Andrews. EaSTCHEMen
dc.contributor.institutionUniversity of St Andrews. School of Chemistryen
dc.identifier.doi10.3390/nano14080651
dc.description.statusPeer revieweden


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