Structure–activity relationship of nanostructured ceria for the catalytic generation of hydroxyl radicals

Abstract

The morphologies and associated atomic structures of ceria catalysts influence their intrinsic activity towards the catalytic production of hydroxyl radicals from hydrogen peroxide.

Phytotoxic Effect of sub‐3‐nm Crystalline Ceria Nanoparticles on the Hydroponic Growth of Daikon Radish Microgreens

“…The size of the crystalline domains and the crystallinity of these particles are often not verified or documented. Such information is critical to evaluate the phytotoxic effects of these NPs because the chemical reactivity of ceria NPs has been correlated to the types of exposed facets, their density of oxygen vacancy defects, and the disordered atomic structures of these NPs [16] . All these factors contribute to the physicochemical properties of ceria NPs of different sizes, which could be used to explain the different degrees of phytotoxicity.…”

Synthesis and characterization of nanoceria for electrochemical sensing applications

“…33 Shape-specic nanoceria synthesized via hydrothermal method with cerium nitrate as precursors were precisely controlled by molarity of sodium hydroxide, reaction temperature, and pH. [34][35][36][37] Addition of surfactants as a stabilizer agent can also control the overall shape of nanomaterials, and have critical roles on surface adsorption of surface active molecules. An 8-20 nm ceria nanocubes have been synthesized with cerium nitrate (precursor), and ammonia with TritonX-100 (surfactant).…”

“…Here, the samples are shot with a high-energy electron beam which hit the sample, get reected, and read by a detector. 29,34 SEM and TEM images can distinguish agglomeration or decomposition of nanoparticle clusters. Fig.…”

Enhanced Artificial Enzyme Activities on the Reconstructed Sawtoothlike Nanofacets of Pure and Pr-Doped Ceria Nanocubes

“…This is in contrast to some previous studies such as Celardo et al 22 showing that Ce 3+ /Ce 4+ ratio is crucial in Sm-doped nanoceria as antioxidant, but agrees with other research results where nanoceria with little or similar Ce 3+ percentage but different morphology could have dramatic different catalytic activities. 18 , 21 , 63 , 64 However, it should be highlighted that on the Pr-doped ceria nanocube samples, 100% Pr is in the oxidation state of Pr 3+ as shown in XPS results, that is 10% to the total Ce and Pr amounts. Similar to Ce, the redox Pr 3+ /Pr 4+ cycle can also be considered as an oxygen buffer.…”