Template-free and surfactant-free synthesis of CeO2 nanodiscs with enhanced photocatalytic activity
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Abstract
Abstract Nanodiscs of ceria (CeO2) were prepared through a template-free and surfactant-free simple wet chemical method and were well characterized by TEM, FESEM, XRD, XPS, Raman, photoluminescence (PL) and UV–vis spectroscopy. The effects of crystallite size on the optical response and photocatalytic performance of CeO2 nanodiscs were investigated. FESEM and TEM studies revealed that CeO2 nanodiscs are made up of CeO2 nanoparticles. XRD and Raman studies revealed crystallite size dependent variation in the lattice strain and disorder in the CeO2 nanodiscs with cubic fluorite structure. PL studies revealed higher concentration of Ce3+ defects and oxygen vacancies in CeO2 nanodiscs with smaller crystallite size. CeO2 nanodiscs with crystallite size of 8.2 nm exhibited superior photocatalytic activities for solar degradation of MB, MG and MO. The mechanisms underlying formation of CeO2 nanodiscs and their enhanced photocatalytic response were tentatively proposed.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Catalytic Processes in Materials Science · Advanced Photocatalysis Techniques · Copper-based nanomaterials and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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