Polymer-fabricated synthesis of cerium oxide nanoparticles and applications as a green catalyst towards multicomponent transformation with size-dependent activity studies

CrystEngComm ◽  
2016 ◽  
Vol 18 (40) ◽  
pp. 7873-7882 ◽  
Author(s):  
Boby Samai ◽  
Soumen Sarkar ◽  
Sayantani Chall ◽  
Soumyadipta Rakshit ◽  
Subhash Chandra Bhattacharya
Keyword(s):  
Cerium Oxide ◽  
Cerium Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Green Catalyst ◽  
Size Dependent ◽  
Dependent Activity

scholarly journals Cerium oxide nanoparticles at the nano-bio interface: size-dependent cellular uptake

2018 ◽  
Vol 46 (sup3) ◽  
pp. S956-S963 ◽  
Author(s):  
Sushant Singh ◽  
Anh Ly ◽  
Soumen Das ◽  
Tamil S. Sakthivel ◽  
Swetha Barkam ◽  
...  
Keyword(s):  
Cerium Oxide ◽  
Cellular Uptake ◽  
Cerium Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Size Dependent

Photoreductive dissolution of cerium oxide nanoparticles and their size-dependent absorption properties

2020 ◽  
Vol 22 (10) ◽  
pp. 5756-5764
Author(s):  
Natasha W. Pettinger ◽  
Jennifer M. Empey ◽  
Sascha Fröbel ◽  
Bern Kohler
Keyword(s):  
Cerium Oxide ◽  
Uv Light ◽  
Cerium Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Absorption Properties ◽  
Size Dependent ◽  
Redox Active ◽  
Dependent Absorption

Changing the size of cerium oxide nanoparticles with UV light provides insights into the absorption properties of this redox-active photocatalyst.

pH-Dependent Activity of Dextran-Coated Cerium Oxide Nanoparticles on Prohibiting Osteosarcoma Cell Proliferation

2015 ◽  
Vol 1 (11) ◽  
pp. 1096-1103 ◽  
Author(s):  
Ece Alpaslan ◽  
Hilal Yazici ◽  
Negar H. Golshan ◽  
Katherine S. Ziemer ◽  
Thomas J. Webster
Keyword(s):  
Cell Proliferation ◽  
Cerium Oxide ◽  
Cerium Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Osteosarcoma Cell ◽  
Dependent Activity ◽  
Ph Dependent

Polyacrylic Acid Modified Cerium Oxide Nanoparticles: Synthesis and Characterization as a Peroxidase Mimic for Non-Enzymatic H2O2 Sensor

2020 ◽  
Vol 16 (5) ◽  
pp. 816-828
Author(s):  
Gurdeep Rattu ◽  
Nishtha Khansili ◽  
Prayaga M. Krishna
Keyword(s):  
Hydrogen Peroxide ◽  
Cerium Oxide ◽  
Polyacrylic Acid ◽  
Spectroscopic Analysis ◽  
Cerium Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Peroxidase Mimic ◽  
Ft Ir ◽  
H2o2 Sensing ◽  
Fluorescence Spectrometer

Background: Cerium oxide nanoparticles (nanoceria) are efficient free-radical scavengers due to their dual valence state and thus exhibit optical and catalytic properties. Therefore, the main purpose of this work was to understand the peroxidase mimic activity of polymer-stabilized nanoceria for enzyme-less H2O2 sensing by fluorescence spectrometer. Objective: This research revealed the development of fluorescence hydrogen peroxide nanosensor based on the peroxidase-like activity of polyacrylic acid stabilized nanoceria (PAA-CeO2 Nps). Methods: PAA-CeO2 Nps were synthesized by simple cross-linking reaction at a low temperature and characterized by XRD, SEM, Zeta potential, TGA, FT-IR and UV-VIS spectroscopic analysis. H2O2 sensing was performed by a fluorescence spectrometer. Results:: The synthesized polymer nanocomposite was characterized by XRD, SEM, TGA, FT-IR and UV-VIS spectroscopic analysis. The XRD diffraction patterns confirmed the polycrystalline nature and SEM micrograph showed nanoparticles having hexagonal symmetry and crystallite size of 32 nm. The broad peak of Ce–O bond appeared at 508 cm-1. UV-VIS measurements revealed a welldefined absorbance peak around 315 nm and an optical band-gap of 3.17 eV. As synthesized PAACeO2 Nps effectively catalysed the decomposition of hydrogen peroxide (H2O2) into hydroxyl radicals. Then terephthalic acid was oxidized by hydroxyl radical to form a highly fluorescent product. Under optimized conditions, the linear range for determination of hydrogen peroxide was 0.01 - 0.2 mM with a limit of detection (LOD) of 1.2 μM. Conclusion: The proposed method is ideally suited for the sensing of H2O2 at a low cost and this detection system enabled the sensing of analytes (sugars), which can enzymatically generate hydrogen peroxide.

Radiosensitizing Effect of Cerium Oxide Nanoparticles on Human Leukemia Cells

2018 ◽  
Vol 6 (2) ◽  
pp. 111-115 ◽  
Author(s):  
Azadeh Montazeri ◽  
Zohreh Zal ◽  
Arash Ghasemi ◽  
Hooman Yazdannejat ◽  
Hossein Asgarian-Omran ◽  
...  
Keyword(s):  
Cerium Oxide ◽  
Leukemia Cells ◽  
Cerium Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Human Leukemia ◽  
Radiosensitizing Effect ◽  
Human Leukemia Cells

Cerium oxide nanoparticles acts as a novel therapeutic agent for ulcerative colitis through anti-oxidative mechanism

Life Sciences ◽  
2021 ◽  
pp. 119500
Author(s):  
Fereshteh Asgharzadeh ◽  
Alireza Hashemzadeh ◽  
Farzad Rahmani ◽  
Atieh Yaghoubi ◽  
Seyedeh Elnaz Nazari ◽  
...  
Keyword(s):  
Ulcerative Colitis ◽  
Cerium Oxide ◽  
Therapeutic Agent ◽  
Cerium Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Novel Therapeutic
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