Sharma, ShuchiShuchiSharmaShanmugam, RamasamyRamasamyShanmugamMahto, Raju KumarRaju KumarMahtoSahoo, Malaya K.Malaya K.SahooRao, H. SeshagiriH. SeshagiriRaoNguyen, Quang KhanhQuang KhanhNguyenRao, G. RangaG. RangaRao2025-08-282025-08-282025-02-012468-023010.1016/j.surfin.2025.105842http://repository.iitgn.ac.in/handle/IITG2025/19490Oxygen vacancy-rich metal oxides are often added as promoters to Pt-based electrocatalysts to scavenge the adsorbed CO on Pt surface efficiently and increase the rate of methanol oxidation reaction (MOR). In the present work, oxygen vacancy-rich gadolinium doped ceria (Ce-Gd-O) is investigated as a promoter for MOR. This study shows that 0.1 mol Gd-doped CeO2 promotes MOR activity of Pt/C by about 4.8 times. The first principles based DFT calculations on electron density and partial density of states reveal that Gd-doped CeO2 exhibits superior catalytic activity. Further, the residual charge on Gd substituted at one Ce site in CeO2 lattice aids in producing-OH ions and enhances MOR. The electrocatalytic activity of Pt-Ce1 _ y Gd y O 2 _ delta /C electrocatalyst is boosted due to the large number of oxyphilic species generated on the oxygen defect sites of Ce-Gd-O. The-OH groups can eliminate the adsorbed CO on Pt as CO2 and help maintain the MOR activity.en-USChemistryMaterials SciencePhysicsArticlehttps://v2.sherpa.ac.uk/id/publication/3588601-02-2025105842Article0WOS:001405402000001