biostudies-literatureUnknown13(37)Chen JDetermining the different surfaces of oxide nanocrystals is key in developing structure-property relations. In many cases, only surface geometry is considered while ignoring the influence of surroundings, such as ubiquitous water on the surface. Here we apply ¹⁷O solid-state NMR spectroscopy to explore the facet differences of morphology-controlled ceria nanocrystals considering both geometry and water adsorption. Tri-coordinated oxygen ions at the 1^st layer of ceria (111), (110), and (100) facets exhibit distinct ¹⁷O NMR shifts at dry surfaces while these ¹⁷O NMR parameters vary in the presence of water, indicating its non-negligible effects on the oxide surface. Thus, the interaction between water and oxide surfaces and its impact on the chemicChemical science11083-11090https://www.ebi.ac.uk/biostudies/studies/S-EPMC9517059biostudies-literatureSurface differences of oxide nanocrystals determined by geometry and exogenously coordinated water molecules.PMC9517059Wen YXia XChen JWu XPChen LGrey CPLin ZWu DQin TLiu TWang JLiu XDing WZhu LZhang YGong XQHope MATang WPeng LfalseSurface differences of oxide nanocrystals determined by geometry and exogenously coordinated water molecules.Determining the different surfaces of oxide nanocrystals is key in developing structure-property relations. In many cases, only surface geometry is considered while ignoring the influence of surroundings, such as ubiquitous water on the surface. Here we apply ¹⁷O solid-state NMR spectroscopy to explore the facet differences of morphology-controlled ceria nanocrystals considering both geometry and water adsorption. Tri-coordinated oxygen ions at the 1^st layer of ceria (111), (110), and (100) facets exhibit distinct ¹⁷O NMR shifts at dry surfaces while these ¹⁷O NMR parameters vary in the presence of water, indicating its non-negligible effects on the oxide surface. Thus, the interaction between water and oxide surfaces and its impact on the chemic2022-01-01T00:00:00Z2022 Sep2025-04-05T13:27:50.824Z2025-04-05T13:27:50.824ZS-EPMC95170593632047610.1039/d2sc03885d