Spontaneous formation of core-shell silver-copper oxide by carbon dot-mediated reduction for enhanced oxygen electrocatalysis

2020 ◽  
Vol 329 ◽  
pp. 135172
Author(s):  
Hoseop Im ◽  
Sunguk Noh ◽  
Jun Ho Shim
Keyword(s):  
Copper Oxide ◽  
Core Shell ◽  
Carbon Dot ◽  
Spontaneous Formation ◽  
Silver Copper ◽  
Mediated Reduction

scholarly journals Tuning of Localized Surface Plasmon Resonance in Copper-Copper Oxide Core-Shell Quantum Dots for the Application in Biosensors

2020 ◽  
Author(s):  
Prabhash Prasannan Geetha ◽  
Ajith Ramachandran ◽  
Swapna S. Nair
Keyword(s):  
Quantum Dots ◽  
Surface Plasmon Resonance ◽  
Copper Oxide ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Particle Diameter ◽  
Noble Metal Nanoparticles ◽  
Localized Surface Plasmon ◽  
Core Shell ◽  
Chemical Route

Surface Plasmon Resonance (SPR) is an attracting property of certain transition metals when they are synthesized in nano-range giving rise to promising optical applications. However, most SPR and associated applications are limited to the noble metal nanoparticles, which limits their potential due to high production cost. We report surface plasmon resonance in copper-copper oxide core-shell quantum dots synthesized via chemical route studied by using UV-Visible spectrophotometry. Tuning of the plasmonic resonance with respect to the particle diameter is achieved by an inexpensive all chemical route. Photoluminescence measurements also support the data. This size reduction leads to remarkable changes in its optical response as compared to the bulk metal. The results point towards applications of these materials in tunable SPR based biosensors.

scholarly journals Bergenia ciliate–Mediated Mixed-Phase Synthesis and Characterization of Silver-Copper Oxide Nanocomposite for Environmental and Biological Applications

Materials ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6085
Author(s):  
Fazal Ur Rehman ◽  
Rashid Mahmood ◽  
Manel Ben Ali ◽  
Amor Hedfi ◽  
Mohammed Almalki ◽  
...  
Keyword(s):  
Copper Oxide ◽  
Radical Scavenging Activity ◽  
Average Particle Size ◽  
Radical Scavenging ◽  
Diffusion Method ◽  
Average Particle ◽  
Light Spectrum ◽  
Structural Morphology ◽  
X Ray ◽  
Silver Copper

Bergenia ciliate (B. ciliate) leaf extract was used as a reducing and stabilizing agent for the synthesis of silver-copper oxide nanocomposite (Ag-CuO NC). Scanning and transmission electron microscopies (SEM and TEM) were used to examine the structural morphology, and the average particle size was determined to be 47.65 nm. The phase confirmation and crystalline structure were examined through the X-ray diffraction (XRD) technique, where cubic and monoclinic geometries were assigned to Ag and CuO. The energy dispersive X-ray (EDX), Fourier transform infrared (FTIR) and ultra-violet and visible (UV-Visible) spectroscopies were operated to analyse the elemental composition, functional groups and light absorption phenomena of the Ag-CuO NC. Under the full light spectrum, the photodegradation of Rhodamine 6G was recorded, and 99.42 percent of the dye degraded in 80 min. The Agar well diffusion method was followed to perform antibacterial activity against selected pathogens, and the activity was found to increase with increasing concentration of Ag-CuO NC. The ABTS free radical scavenging activity suggests that the activity of Ag-CuO NC is higher than ascorbic acid.

Copper oxide@Cobalt oxide Core-Shell Nanostructure, as an Efficient Binder-free Anode for Lithium ion Batteries

2021 ◽  
Author(s):  
Hossein Jafaripur ◽  
Pooya Dehghan ◽  
Amir Mohamad Zare ◽  
Zeinab Sanaee ◽  
Shahnaz Ghasemi
Keyword(s):  
Copper Oxide ◽  
Lithium Ion Batteries ◽  
Cobalt Oxide ◽  
Lithium Ion ◽  
Core Shell ◽  
Binder Free

A facile fabrication of silver/copper oxide nanocomposite: An innovative entry in photocatalytic and biomedical materials

2020 ◽  
Vol 31 ◽  
pp. 101814 ◽  
Author(s):  
Afaq Ullah Khan ◽  
Arif Ullah Khan ◽  
Baoshan Li ◽  
Mater H. Mahnashi ◽  
Bander A. Alyami ◽  
...  
Keyword(s):  
Copper Oxide ◽  
Biomedical Materials ◽  
Silver Copper ◽  
Facile Fabrication

Ag2CuMnO4: A new silver copper oxide with delafossite structure

2006 ◽  
Vol 179 (12) ◽  
pp. 3883-3892 ◽  
Author(s):  
David Muñoz-Rojas ◽  
Gloria Subías ◽  
Judith Oró-Solé ◽  
Jordi Fraxedas ◽  
Benjamín Martínez ◽  
...  
Keyword(s):  
Copper Oxide ◽  
Silver Copper ◽  
Delafossite Structure

Room-Temperature Synthesis and Crystal, Magnetic, and Electronic Structure of the First Silver Copper Oxide.

ChemInform ◽  
2003 ◽  
Vol 34 (8) ◽  
Author(s):  
Eva M. Tejada-Rosales ◽  
Juan Rodriguez-Carvajal ◽  
Nieves Casan-Pastor ◽  
Pere Alemany ◽  
Eliseo Ruiz ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Copper Oxide ◽  
Room Temperature ◽  
Temperature Synthesis ◽  
Room Temperature Synthesis ◽  
Silver Copper

Thermally Tunable Pickering Emulsions Stabilized by Carbon-Dot-Incorporated Core–Shell Nanospheres with Fluorescence “On–Off” Behavior

Langmuir ◽  
2017 ◽  
Vol 34 (1) ◽  
pp. 273-283 ◽  
Author(s):  
Jianqiang Chen ◽  
Chenyang Zhu ◽  
Zhen Yang ◽  
Ping Wang ◽  
Yiying Yue ◽  
...  
Keyword(s):  
Core Shell ◽  
Pickering Emulsions ◽  
Carbon Dot
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