Controlled Synthesis of CeO₂ Flower-Like and Well-Aligned Nanorod Hierarchical Architectures by a Phosphate-Assisted Hydrothermal Route

Abstract

Large-scale CeO 2 hierarchical architectures composed of well-aligned nanorods were controllably prepared through a simple Na 3 PO 4 assisted hydrothermal reaction without any templates. The products were characterized with X-ray diffraction, field-emission scanning electron microscopy, and high-resolution transmission electron microscopy. It was found that the CeO 2 architectures are in flower-like and vertically aligned nanorod morphologies and composed of numerous fluorite cubic single-crystalline nanorods of 20-40 nm in diameter and lengths of up to several micrometers. The possible mechanism for the nanostructures formation was discussed.

Facile hydrothermal synthesis of CeO2 nanosheets with high reactive exposure surface

“…Nanostructured CeO 2 possesses superior physical and chemical properties compared with its bulk counterparts [6][7][8]. Over the years, remarkable progresses have been made in the study of the synthesis of CeO 2 nanomaterials with various morphologies and in the investigation of their corresponding novel properties [9][10][11].…”

Influence of solvent on the morphology and photocatalytic properties of ZnS decorated CeO2 nanoparticles

“…Other flower-like CeO 2 architectures that consist of nanorods arranged in a spherical morphology, reminiscent of urchin structures, with no sheet-like components, have also been reported. 67 Finally, when compared with the above CeO 2 samples, the MAS technique used herein for the synthesis of CeO 2 samples afforded a unique open structure when EG solution was used as solvent. In contrast, synthesis in water generated material morphologies as commonly reported.…”

Tuning the Morphology of Metal Oxides for Catalytic Applications

“…324 The obtained CeO 2 nanoplates that are enclosed by six (100) facets had a much higher OSC. Hierarchical nanostructures such as arrays of nanorods, 325 flowery shapes, 326,327 nanospindles, 328 and hollow spheres [329][330][331] were synthesized by hydrothermal-like processes with the aid of complicated structure-directing agents. Most interestingly, single-crystalline-like CeO 2 hollow nanocubes with an average edge length of 120 nm and a shell thickness of 30 nm have been fabricated solvothermally using peroxyacetic acid as the oxidant but without using any template.…”