Porous cerium dioxide hollow spheres and their photocatalytic performance

Abstract

Uniform-sized and monodiperse cerium dioxide porous hollow spheres (CeO2-PH) based on the Ostwald ripening process were fabricated by a simple solvothermal method in the absence of any templates.

Hollow Micro/Nanostructured Ceria‐Based Materials: Synthetic Strategies and Versatile Applications

“…[163] Second, hollow structures reduce diffusion length and enhance the accessibility of reactants. [166] Adv. Additionally, compared with nanopowders, hollow structures are easier to be separated, collected and regenerated.…”

Synthesis and catalytic performance of hierarchical TiO 2 hollow sphere/reduced graphene oxide hybrid nanostructures

“…This increased TiO 2 HS/RGO composite adsorptivity promotes the photocatalytic reduction of aromatic nitro organics on the photocatalyst surface. PL spectra have been widely used to study the separation efficiency of electronehole pairs photogenerated from semiconductor/graphene composites [24,37,46]. The PL results in Fig.…”

Effects of the Atmosphere in a Hydrothermal Process on the Morphology and Photocatalytic Activity of Cerium Oxide

“…Cerium oxide (CeO 2 ) is one of the most important earth metal oxides. Due to the unique optical, electrical, magnetic properties and the oxygen storage capacity (OSC) of CeO 2 nanomaterials, they have been used in various applications, in industrial and commercial fields, including solid oxide fuel cells (SOFCs), purification of automobile exhaust, abrasives for chemical mechanical polishing (CMP), and photocatalysis ,. In order to obtain nanoscale CeO 2 materials, researchers have explored a lot of synthesis strategies, including ball milling, electrochemical, templates assisted, sol‐gel, hydrothermal, chemical vapor, and other methods .…”

“…A hydrothermal method is also suitable for the growth of good‐quality crystals because this method over other types of crystal growth is the ability to create crystalline phases which are not stable at the melting point. A hydrothermal reaction is governed by various chemical and thermodynamic parameters, involving chemical composition of the precursor, kind of solvent, pH value of the reaction medium, reaction temperature, duration of reaction, and pressure. Moreover, other associated technologies, such as microwaves, electrochemistry, external magnetic field, and ultrasound, have been employed However, an important factor in a hydrothermal process, the atmosphere of the solution, may be ignored by people.…”