20.500.12556/RUL-155766 Synergistic effect of manganese on zirconia and ceria supports for improving photoreduction of CO$_2$ Photocatalytic CO$_2$ reduction in the liquid phase at neutral pH conditions has been studied employing high surface area Mn-modified cubic CeO$_2$ and amorphous ZrO$_2$ catalysts. Results of the photocatalytic reduction of CO$_2$ to methane are promising on Mn-modified ZrO$_2$ and comparable with the noble metal-based photocatalysts. The surface area of both supports CeO$_2$ and ZrO$_2$ increased with Mn addition. Two broad diffraction peaks in X-ray diffractograms indicate that the ZrO$_2$ support is in the amorphous phase and Mn addition showed no considerable change. High intense diffraction peaks for CeO$_2$ support illustrated the cubic fluorite phase and Mn addition to CeO$_2$ support decreased the crystallite size due to the incorporation of Mn ions into the CeO$_2$ lattice. XPS study revealed the stabilization of Mn in a lower oxidation state i.e., Mn$^{2+}$ and Mn$^{3+}$, with ZrO$_2$ support than with CeO$_2$ support. The superior specific capacitance of the Mn-modified ZrO$_2$ catalyst indicates the enhanced synergy of active Mn species and support. Among the studied catalysts, Mn-modified ZrO$_2$ photocatalyst exhibited the highest activity and selectivity for photoreduction of CO$_2$ to methane and CO. carbon dioxide reduction cerium(IV) oxide zirconium dioxide photocatalysis Mn-modified photocatalyst CO$_2$ reduction CeO$_2$ ZrO$_2$ redukcija ogljikovega dioksida cerijev(IV) oksid cirkonijev dioksid fotokataliza z manganom modificiran fotokatalizator true false true Angleški jezik Slovenski jezik Članek v reviji 2024-04-17 07:54:03 2024-04-17 07:54:04 2024-08-27 10:01:32 0000-00-00 00:00:00 2024 0 0 10 str. iss. 2, art. 112072 Vol. 12 Apr. 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 544.526.5 2213-3437 10.1016/j.jece.2024.112072 183532803 RAZ_Vikram_Sagar_T._2024.pdf RAZ_Vikram_Sagar_T._2024.pdf 1 EC4CA099FF1FAE29FEAE7FD16952EDBC 4feec0885b6744d7fcabad4d44d496a2e827adbc7598dae79f8ddf95e7245500 ced879bf-fc80-11ee-85a5-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=182847 https://www.sciencedirect.com/science/article/pii/S2213343724002021 1 e681910a-fc7e-11ee-85a5-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=182846 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0