Low-temperature synthesis of cerium oxide nanorods and their suppressive effect on photocatalysis of titanium dioxide

Solubility of Nanocrystalline Cerium Dioxide: Experimental Data and Thermodynamic Modeling

“…CeO 2 nanoparticles usually possess octahedral habitus because of the highly symmetric cubic structure of cerium dioxide ( Fm 3 m ). Nevertheless, numerous examples exist which demonstrate the formation of 1D ceria nanostructures (e.g., nanorods) under specific conditions. − The effect of synthesis pH on ceria nanoparticle morphology is widely discussed in the literature. , There are two main hypotheses explaining this phenomenon, namely classical Ostwald ripening and a mixed mechanism involving sequential oriented attachment and the Ostwald ripening process . Cerium dioxide particles synthesized without addition of any surfactants have a cubic or octahedral habitus.…”

“…Nevertheless, numerous examples exist which demonstrate the formation of 1D ceria nanostructures (e.g. nanorods) under specific conditions [80][81][82] . The effect of synthesis pH on ceria nanoparticle morphology is widely discussed in the literature 82,83 .…”

Room-temperature synthesis of nanoceria for degradation of organophosphate pesticides and its regeneration and reuse

“…Modern green chemistry favours low-temperature one-pot syntheses, especially for potential industrial production, where the energy consumption and the complexity of the synthesis and hence its price must be reduced. For example, the lowtemperature synthesis was used to prepare a photocatalytic composite with titanium nanorods, 22 nevertheless the effect of reaction temperature and the effect of cerium salt concentration was not discussed in detail.…”

Tuning the photoactivity of TiO2 nanoarchitectures doped with cerium or neodymium and application to colour removal from wastewaters

“…Neodymium (Nd) is the second most abundant of the rare-earth elements and is almost as abundant as copper [12]. These two lanthanides have been used to modify the photocatalytic activity of TiO2 and a notably low doping percentage is usually sufficient to change the activity of TiO2 both in a positive [13,14] and in a negative way [15,16]. The suppressive effect on the activity, responsible for maintaining the photostability of the lanthanide-doped TiO2 particles, is usually attributed to the ability of the dopants to act as electron and/or hole traps.…”