Facile green synthesis of palladium quantum dots@carbon on mixed valence cerium oxide/graphene hybrid nanostructured bifunctional catalyst for electrocatalysis of alcohol and water

RSC Advances ◽  
2015 ◽  
Vol 5 (45) ◽  
pp. 35993-36000 ◽  
Author(s):  
Ramanujam Kannan ◽  
Hye-Ri Jang ◽  
Eun-Sil Yoo ◽  
Hong-Ki Lee ◽  
Dong Jin Yoo
Keyword(s):  
Quantum Dots ◽  
Ethylene Glycol ◽  
Green Synthesis ◽  
Cerium Oxide ◽  
Electrocatalytic Oxidation ◽  
Mixed Valence ◽  
Bifunctional Catalyst

Electrocatalytic oxidation of ethylene glycol at Pd quantum dots@C–CeOx/RGO electrode.

Cerium oxide nanomaterial with dual antioxidative scavenging potential: Synthesis and characterization

2021 ◽  
pp. 088532822110134
Author(s):  
Sushant Singh ◽  
Udit Kumar ◽  
David Gittess ◽  
Tamil S Sakthivel ◽  
Balaashwin Babu ◽  
...  
Keyword(s):  
Cerium Oxide ◽  
Biological Systems ◽  
Mixed Valence ◽  
Stable Solution ◽  
Ability To Act ◽  
Valence States ◽  
Transmission Electron ◽  
Efficient Reduction ◽  
Rich Media

Many studies have linked reactive oxygen species (ROS) to various diseases. Biomedical research has therefore sought a way to control and regulate ROS produced in biological systems. In recent years, cerium oxide nanoparticles (nanoceria, CNPs) have been pursued due to their ability to act as regenerative ROS scavengers. In particular, they are shown to have either superoxide dismutase (SOD) or catalase mimetic (CAT) potential depending on the ratio of Ce3+/Ce4+ valence states. Moreover, it has been demonstrated that SOD mimetic activity can be diminished by the presence of phosphate, which can be a problem given that many biological systems operate in a phosphate-rich environment. Herein, we report a CNP formulation with both SOD and catalase mimetic activity that is preserved in a phosphate-rich media. Characterization demonstrated a highly dispersed, stable solution of uniform-sized, spherical-elliptical shaped CNP of 12 ± 2 nm, as determined through dynamic light scattering, zeta potential, and transmission electron microscopy. Mixed valence states of Ce ions were observed via UV/Visible spectroscopy and XPS (Ce3+/Ce4+ > 1) (Ce3+∼ 62%). X-ray diffraction and XPS confirmed the presence of oxygen-deficient cerium oxide (CeO2-x) particles. Finally, the CNP demonstrated very good biocompatibility and efficient reduction of hydrogen peroxide under in-vitro conditions.

A sustainable green synthesis of functionalized biocompatible carbon quantum dots from Aloe barbadensis miller and its multifunctional applications

2021 ◽  
pp. 111414
Author(s):  
Jalaja Prasad Malavika ◽  
Chellappan Shobana ◽  
Murugesan Ragupathi ◽  
Ponnuchamy Kumar ◽  
Yun Sung Lee ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Green Synthesis ◽  
Carbon Quantum Dots ◽  
Aloe Barbadensis

scholarly journals Glycerol–water mediated centrifuge controlled green synthesis of oleic acid capped PbS quantum dots for live cell imaging

RSC Advances ◽  
2017 ◽  
Vol 7 (64) ◽  
pp. 40664-40668 ◽  
Author(s):  
M. Vijaya Bharathi ◽  
Kaustab Ghosh ◽  
Priyankar Paira
Keyword(s):  
Quantum Dots ◽  
Oleic Acid ◽  
Green Synthesis ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Live Cell ◽  
Glycerol Water ◽  
Pbs Quantum Dots

Glycerol–water mediated green synthesis of PbS quantum dots (QDs) is introduced utilizing distinctive precipitation strategies for bioimaging application.

Green synthesis g-C3N4 quantum dots loading h-BN for efficient and stable photocatalytic performance

2018 ◽  
Vol 268 ◽  
pp. 561-568 ◽  
Author(s):  
Tao Wang ◽  
Xiqing Liu ◽  
Qiuyue Men ◽  
Changchang Ma ◽  
Yang Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Green Synthesis ◽  
Photocatalytic Performance

Fluorine-doped carbon nitride quantum dots: Ethylene glycol-assisted synthesis, fluorescent properties, and their application for bacterial imaging

Carbon ◽  
2016 ◽  
Vol 109 ◽  
pp. 141-148 ◽  
Author(s):  
Nan Wang ◽  
Hai Fan ◽  
Jianchao Sun ◽  
Zhenwei Han ◽  
Jing Dong ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Ethylene Glycol ◽  
Carbon Nitride ◽  
Fluorescent Properties
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