Utilization of Nanoparticles Produced by Aqueous-Solution Methods – Formation of Acid Sites on CeO2-TiO2 Composite and 1-D TiO2 for Dye-Sensitized Solar Cells

A pH responsive Pickering emulsion stabilized by fibrous palygorskite particles

“…At intermediate pH values (pH~7), numerous broken bonds on the surface of palygorskite particles, such as Si-O, Al-O and Mg-O, are hydrolyzed to produce silanol groups and hydroxyl groups, which generates the basic nature (aqueous dispersion pH is 8-9) of the palygorskite particles. As these groups are amphiphilic, they can partially react with small amounts of both acids and bases; for example, R-OH + H + → R-OH 2 (Zheng et al, 2007;Adachi et al, 2012;Dyab, 2012). Thus they serve as a "buffer" to keep the dispersion pH~9 (Zheng et al, 2007).…”

CeOx/TiO2 (Rutile) Nanocomposites for the Low-Temperature Dehydrogenation of Ethanol to Acetaldehyde: A Diffuse Reflectance Infrared Fourier Transform Spectroscopy–Mass Spectrometry Study

“…1 Other energy-related uses are in the fuel cell technology or in the thermochemical water splitting. 1,2 The high oxidative capability and oxygen storage capacity of ceria is mainly associated with the low energy cost for oxygen vacancy formation and low redox potential between Ce 3+ and Ce 4+ cations, which allows an easy shift from one to the other depending on the environmental conditions. In addition to their well-known redox properties, their acid-base behaviour is another interesting aspect of ceria-based catalysts.…”

“…Due to their electronic conductivity and oxygen storage capacity, these materials have been proven useful as catalysts for soot oxidation, re-forming, partial oxidation, and water–gas shift reaction . Other energy-related uses are in fuel cell technology or in thermochemical water splitting. , The high oxidative capability and oxygen storage capacity of ceria are mainly associated with the low energy cost for oxygen vacancy formation and low redox potential between Ce 3+ and Ce 4+ cations, which allow an easy shift from one to the other depending on the environmental conditions. Moreover, when used as support for metal particles, it can notoriously enhance its redox properties .…”