Dissolution Characteristics of Ceria in Ascorbic Acid Solutions with Implications to Cleaning

Tamilmani, Subramanian; Lowalekar, V.; Raghavan, Srini; Small, Robert J.

doi:10.4028/www.scientific.net/ssp.103-104.283

Cited by 9 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Tamilmani et al (2005) measured the reductive dissolution of 300-nm particles of CeO 2 in an ascorbic acid solution over a range of pH. The concentration of dissolved Ce was determined through ICPMS analysis.…”

Section: Resultsmentioning

confidence: 99%

Effect of cerium oxide nanoparticles on inflammation in vascular endothelial cells

Gojová

Lee

Jung

et al. 2009

Inhalation Toxicology

View full text Add to dashboard Cite

Because vascular endothelial cell inflammation is critical in the development of cardiovascular pathology, we hypothesized that direct exposure of human aortic endothelial cells (HAECs) to ultrafine particles induces an inflammatory response. To test the hypothesis, we incubated HAECs for 4 h with different concentrations (0.001-50 μg/ml) of CeO 2 nanoparticles and subsequently measured mRNA levels of the three inflammatory markers intercellular adhesion molecule 1 (ICAM-1), interleukin (IL)-8, and monocyte chemotactic protein (MCP-1) using real-time polymerase chain reaction (PCR). Ceria nanoparticles caused very little inflammatory response in HAECs, even at the highest dose. This material is apparently rather benign in comparison with Y 2 O 3 and ZnO nanoparticles that we have studied previously. These results suggest that inflammation in HAECs following acute exposure to metal oxide nanoparticles depends strongly on particle composition.

show abstract

Section: Resultsmentioning

confidence: 99%

Effect of cerium oxide nanoparticles on inflammation in vascular endothelial cells

Gojová

Lee

Jung

et al. 2009

Inhalation Toxicology

View full text Add to dashboard Cite

show abstract

“…So far, dissolution rates of CeO 2 thin films have been measured for various acidic [32] (i.e., HCl and H 2 SO 4 ) and oxidizing (addition of H 2 O 2 ) [32] media, despite common views that CeO 2 is a highly insoluble refractory oxide. [33] Furthermore, uptake and biotransformation of CeO 2 NPs in a recent cucumber-plant system led to Ce phosphate rods in intercellular spaces. [34] We also show formation of rod-shaped crystallites in the liver near in vivo processed CeO 2 NPs; they are composed of Ce, O, and P as shown in TEM and corresponding energy-dispersive X-ray spectroscopy (EDS) analyses (Figure 1e; Figure S5) and are of comparable size and morphology as sol-gel-derived Ce phosphates.…”

Section: In Vivo Processing Mechanisms Of Nanoceriamentioning

confidence: 99%

In Vivo Processing of Ceria Nanoparticles inside Liver: Impact on Free‐Radical Scavenging Activity and Oxidative Stress

et al. 2014

View full text Add to dashboard Cite

The cytotoxicity of ceria ultimately lies in its electronic structure, which is defined by the crystal structure, composition, and size. Despite previous studies focused on ceria uptake, distribution, biopersistance, and cellular effects, little is known about its chemical and structural stability and solubility once sequestered inside the liver. Mechanisms will be presented that elucidate the in vivo transformation in the liver. In vivo processed ceria reveals a particle-size effect towards the formation of ultrafines, which represent a second generation of ceria. A measurable change in the valence reduction of the second-generation ceria can be linked to an increased free-radical scavenging potential. The in vivo processing of the ceria nanoparticles in the liver occurs in temporal relation to the brain cellular and protein clearance responses that stem from the ceria uptake. This information is critical to establish a possible link between cellular processes and the observed in vivo transformation of ceria. The temporal linkage between the reversal of the pro-oxidant effect (brain) and ceria transformation (liver) suggests a cause–effect relationship.

show abstract

“…52 However, some dissolution may be expected in the presence of reducing agents such as ascorbic acid especially at low pH values and in the presence of catalytic materials, as these can reducibly dissolve ceria generating free Ce 3+ . [53][54][55] This process is commonly used in chemical mechanical polishing (CMP) in microelectronics applications for post CMP cleaning of ceria containing slurries. Changes in the oxidation state and pH can change solubility status.…”

Section: Physicochemical Changes Of Nanoceria In Environmental Exposu...mentioning

confidence: 99%

Applications and implications of nanoceria reactivity: measurement tools and environmental impact

Andreescu

Bülbül

Özel

et al. 2014

Environ. Sci.: Nano

View full text Add to dashboard Cite

Dissolution Characteristics of Ceria in Ascorbic Acid Solutions with Implications to Cleaning

Cited by 9 publications

References 0 publications

Effect of cerium oxide nanoparticles on inflammation in vascular endothelial cells

Effect of cerium oxide nanoparticles on inflammation in vascular endothelial cells

In Vivo Processing of Ceria Nanoparticles inside Liver: Impact on Free‐Radical Scavenging Activity and Oxidative Stress

Applications and implications of nanoceria reactivity: measurement tools and environmental impact

Contact Info

Product

Resources

About