Effect of (Ag, Zn) co-doping on Structural, Optical and Bactericidal Properties of CuO Nanoparticles Synthesized by Microwave-assisted Method

2021 ◽  
Author(s):  
Naveen Thakur ◽  
Anu . ◽  
Kuldeep Kumar ◽  
Ashwani Kumar
Keyword(s):  
Copper Oxide ◽  
Synthesis Method ◽  
Cuo Nanoparticles ◽  
Microwave Assisted Synthesis ◽  
Co Doping ◽  
Microwave Assisted ◽  
Bactericidal Properties ◽  
Microwave Assisted Method ◽  
Co Doped

A microwave assisted synthesis method has been used for the fabrication of pure and (Ag, Zn) co-doped copper oxide (Cu1-x-yAgxZnyO) nanoparticles (NPs) with different weight ratios of zinc (0.00, 0.02,...

Monodisperse core–shell melamine–formaldehyde polymer-modified silica microspheres prepared using a facile microwave-assisted method

2017 ◽  
Vol 41 (20) ◽  
pp. 11517-11520 ◽  
Author(s):  
Houmei Liu ◽  
Tianhang Liu ◽  
Makoto Takafuji ◽  
Hongdeng Qiu ◽  
Hirotaka Ihara
Keyword(s):  
Synthesis Method ◽  
Microwave Assisted Synthesis ◽  
Core Shell ◽  
Melamine Formaldehyde ◽  
Silica Microspheres ◽  
Modified Silica ◽  
Microwave Assisted ◽  
Resin Microspheres ◽  
Microwave Assisted Method

A facile microwave-assisted synthesis method for the preparation of monodisperse core–shell melamine–formaldehyde (MF)-modified silica resin microspheres (SiO2@MF) was developed.

Assessment of Magnetic Properties between Fe and Ni Doped ZnO Nanoparticles Synthesized by Microwave Assisted Synthesis Method

2021 ◽  
Vol 317 ◽  
pp. 119-124
Author(s):  
Sabiu Said Abdullahi ◽  
Garba Shehu Musa Galadanci ◽  
Norlaily Mohd Saiden ◽  
Josephine Ying Chyi Liew
Keyword(s):  
Magnetic Properties ◽  
Zno Nanoparticles ◽  
Room Temperature ◽  
Synthesis Method ◽  
Dilute Magnetic Semiconductors ◽  
High Coercivity ◽  
Microwave Assisted Synthesis ◽  
Ferromagnetic Behavior ◽  
Microwave Assisted ◽  
Doped Zno

The emergence of Dilute Magnetic Semiconductors (DMS) with a potentials for spintronic application have attracted much researches attention, special consideration has been given to ZnO semiconductor material due to its wide band gap of 3.37 eV, large exciting binding energy of 60 meV, moreover, its ferromagnetic behavior at room temperature when doped with transition metals. MxZn1-xO (M = Fe or Ni) nanoparticles were synthesized by microwave assisted synthesis method calcined at 600°C. The structural, morphological and magnetic properties of these nanoparticles were studied using X-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM) and Vibrating Sample Magnetometer (VSM) respectively. Single phase Wurtzite hexagonal crystal structure was observed for the undoped and Fe doped ZnO nanoparticles with no any impurity, whereas Ni doped ZnO nanoparticles shows the formation of NiO impurities. The magnetic measurement reveals a diamagnetic behavior for the undoped ZnO meanwhile a clear room temperature ferromagnetism was observed for both Fe and Ni doped ZnO. Fe doped ZnO present a high saturation magnetization compared to Ni doped ZnO. However, Ni doped ZnO present high coercivity. The research was confirmed that Fe doped ZnO material will be good material combination for spintronic applications.

A simple, economical one-pot microwave assisted synthesis of nitrogen and sulfur co-doped graphene for high energy supercapacitors

2020 ◽  
Vol 341 ◽  
pp. 135999 ◽  
Author(s):  
Domga ◽  
Manickavasakam Karnan ◽  
Fatai Oladoyinbo ◽  
Guy Bertrand Noumi ◽  
Jean Bosco Tchatchueng ◽  
...  
Keyword(s):  
High Energy ◽  
Microwave Assisted Synthesis ◽  
One Pot ◽  
Microwave Assisted ◽  
Doped Graphene ◽  
Co Doped

scholarly journals Microwave-assisted synthesis of high thermal stability and colourless polyimides containing pyridine

2019 ◽  
Vol 6 (6) ◽  
pp. 190196 ◽  
Author(s):  
Kai Cheng ◽  
Jie-pin Hu ◽  
Yan-cheng Wu ◽  
Chu-qi Shi ◽  
Zhi-geng Chen ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Synthesis Method ◽  
Optical Transmittance ◽  
Aromatic Diamine ◽  
Microwave Assisted Synthesis ◽  
Step Method ◽  
Light Emitting ◽  
Microwave Assisted ◽  
One Step ◽  
Biphenyltetracarboxylic Dianhydride

A novel aromatic diamine containing pyridyl side group, 4-pyridine-4,4-bis(3,5-dimethyl-5-aminophenyl)methane (PyDPM), was successfully synthesized via electrophilic substitution reaction. The polyimides (PIs) containing pyridine were obtained via the microwave-assisted one-step polycondensation of the PyDPM with pyromellitic dianhydride (PMDA), 3,3′,4,4′-biphenyltetracarboxylic dianhydride (BPDA), 3,3′,4,4′-diphenylether tetracarboxylic dianhydride (ODPA) and 4,4′-(hexafluoroisopropylidene)diphthalic anhydride (6FDA). Contrarily to the reported similar PIs, these PIs exhibit much higher thermal stability or heat resistance, i.e. high glass transition temperatures ( T g s) in the range of 358–473°C, and the decomposition temperatures at 5% weight loss over 476°C under nitrogen. They can afford flexible and strong films with tensile strength of 82.1–93.3 MPa, elongation at break of 3.7%–15.2%, and Young's modulus of 3.3–3.8 GPa. Furthermore, The PI films exhibit good optical transparency with the cut-off wavelength at 313–366 nm and transmittance higher than 73% at 450 nm. The excellent thermal and optical transmittance can be attributed to synthesis method and the introduction of pyridine rings and ortho-methyl groups. The inherent viscosities of PIs via one-step method were found to be 0.58–1.12 dl g −1 in DMAc, much higher than those via two-step method. These results indicate these PIs could be potential candidates for optical substrates of organic light emitting diodes (OLEDs).

Microwave-assisted synthesis of pyrite FeS2 microspheres with strong absorption performance

RSC Advances ◽  
2015 ◽  
Vol 5 (80) ◽  
pp. 65575-65582 ◽  
Author(s):  
Jian Wu ◽  
Yuxuan Liang ◽  
Pengpeng Bai ◽  
Shuqi Zheng ◽  
Liqiang Chen
Keyword(s):  
Strong Absorption ◽  
High Yield ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted ◽  
Absorption Performance ◽  
Average Size ◽  
Microwave Assisted Method

Pyrite FeS2 microspheres with an average size of approximately 1.1 μm were successfully synthesised in high yield via a facile and efficient microwave-assisted method.

Citrate complexation microwave-assisted synthesis of Ce0.8Zr0.2O2 nanocatalyst over Al2O3 used in CO oxidation for hydrogen purification: influence of composite loading and synthesis method

RSC Advances ◽  
2016 ◽  
Vol 6 (40) ◽  
pp. 34055-34065 ◽  
Author(s):  
Leila Rezaee ◽  
Mohammad Haghighi
Keyword(s):  
Co Oxidation ◽  
Synthesis Method ◽  
Composite Catalyst ◽  
Microwave Assisted Synthesis ◽  
Hydrogen Purification ◽  
Microwave Assisted ◽  
Microwave Combustion

Nanostructured Ce0.8Zr0.2O2/Al2O3 composite catalyst was synthesized by modified citrate complexation method. Utilizing microwave combustion endowed the sample with more uniform and homogenous pattern leading to better CO oxidation.

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