scholarly journals Microwave‐Assisted Synthesis of ZnO–rGO Core–Shell Nanorod Hybrids with Photo‐ and Electro‐Catalytic Activity

2020 ◽  
Vol 26 (29) ◽  
pp. 6703-6714 ◽  
Author(s):  
Arpita Jana ◽  
Duncan H. Gregory
Keyword(s):  
Catalytic Activity ◽  
Microwave Assisted Synthesis ◽  
Core Shell ◽  
Microwave Assisted ◽  
Electro Catalytic Activity

Highly dispersed and disordered nickel–iron layered hydroxides and sulphides: robust and high-activity water oxidation catalysts

2018 ◽  
Vol 2 (7) ◽  
pp. 1561-1573 ◽  
Author(s):  
Manjunath Chatti ◽  
Alexey M. Glushenkov ◽  
Thomas Gengenbach ◽  
Gregory P. Knowles ◽  
Tiago C. Mendes ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
High Activity ◽  
Water Oxidation ◽  
Microwave Assisted Synthesis ◽  
Oxidation Catalysts ◽  
Alkaline Water ◽  
Nickel Iron ◽  
Microwave Assisted ◽  
Highly Dispersed

A rapid low-temperature microwave-assisted synthesis of nickel(iron) layered hydroxides and sulphides that exhibit robust catalytic activity for electrooxidation of alkaline water is introduced.

Microwave-assisted synthesis of Ce-doped ZnO/CNT composite with enhanced photo-catalytic activity

2017 ◽  
Vol 43 (1) ◽  
pp. 84-91 ◽  
Author(s):  
Md. Elias ◽  
Md. Khairul Amin ◽  
Shakhawat H. Firoz ◽  
Md. Asjad Hossain ◽  
Sonia Akter ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Microwave Assisted Synthesis ◽  
Photo Catalytic Activity ◽  
Microwave Assisted ◽  
Doped Zno

Microwave assisted synthesis of substituted metallophthalocyanines and their catalytic activity in epoxidation reaction

2005 ◽  
Vol 09 (03) ◽  
pp. 163-169 ◽  
Author(s):  
Farzad Bahadoran ◽  
Solmaz Dialameh
Keyword(s):  
Catalytic Activity ◽  
Reaction Time ◽  
Microwave Irradiation ◽  
Microwave Assisted Synthesis ◽  
Free Condition ◽  
Catalytic Activities ◽  
Microwave Assisted ◽  
Solvent Free Condition ◽  
Epoxidation Reaction ◽  
Phthalocyanine Ring

Substituted iron and cobalt phthalocyanines are easily prepared by microwave irradiation of the starting materials under solvent free condition, which reduced reaction time considerably. The synthesized metallophthalocyanines (octachloro-, tetranitro-, tetracarboxy- or polyphthalocyanine) are used as epoxidation catalysts of cyclooctene in homogeneous and heterogeneous conditions by iodosylbenzene as an oxidant. Their catalytic activities have shown that the electron withdrawing groups on the phthalocyanine ring have a very small effect on stability of the catalyst during the reactions.

scholarly journals Microwave-Assisted Synthesis Core-Fe3O4 Shell-Au Cubic Nanoparticles

2011 ◽  
Vol 2011 ◽  
pp. 1-3
Author(s):  
Manuel Ramos ◽  
Karina Castillo ◽  
Domingo A. Ferrer ◽  
Rurik J. Farias ◽  
Sergio Flores ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Field Emission ◽  
Au Nanoparticles ◽  
Microwave Assisted Synthesis ◽  
Core Shell ◽  
X Ray ◽  
Microwave Assisted

Core-Shell (Fe3O4/Au) nanoparticles were synthesized using iron II chloride tetrahydrate (FeCl2H2O) and potassium tetrachloroaurate III (AuCl4K) precursors under microwave-assisted conditions. Products were analyzed using field emission gun electron microscope in transmission and scanning modes; energy disperse X-ray spectroscopy performed during STEM measurements indicated a signal for gold K and M signals at 9 keV and 13 keV, respectively, confirming Au atoms at nanoparticle's perimeter and Fe-L signal at 8 keV to be at the center.

scholarly journals Rapid Microwave-Assisted Synthesis of Fe3O4/SiO2/TiO2 Core-2-Layer-Shell Nanocomposite for Photocatalytic Degradation of Ciprofloxacin

Catalysts ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1136
Author(s):  
Ivana Gabelica ◽  
Lidija Ćurković ◽  
Vilko Mandić ◽  
Ivana Panžić ◽  
Davor Ljubas ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Protective Layer ◽  
Magnetic Core ◽  
Microwave Assisted Synthesis ◽  
Core Shell ◽  
Organic Micropollutants ◽  
Microwave Assisted ◽  
Magnetite Fe3o4 ◽  
Composite Configuration ◽  
Powder Suspension

In this work, magnetic nanoparticles based on magnetite were successfully prepared via rapid microwave-assisted synthesis. In order to obtain the ternary core–shell Fe3O4/SiO2/TiO2 nanocomposite, first magnetite (Fe3O4) nanoparticles were coated with a protective layer of silica (SiO2) and finally with titania (TiO2). The composite configuration comprising porous and photoactive shells should facilitate the removal of organic micropollutants (OMPs) from water. Furthermore, the magnetic core is critical for processing the management of the photocatalytic powder suspension. The magnetization of the prepared magnetic nanoparticles was confirmed by vibrating-sample magnetometry (VSM), while the structure and morphology of the core–shell nanocomposite were investigated by means of XRD, FTIR, and SEM. Adsorption and photocatalysis were evaluated by investigating the removal efficiency of ciprofloxacin (CIP) as a model OMP using the prepared magnetic core–shell nanocomposite under UV-A light irradiation. It was found that the Fe3O4/SiO2/TiO2 nanocomposite showed good synergistic adsorption and photocatalytic properties. The measurement of iron in eluate confirmed that no leaching occurred during the photocatalytic examination. The recovery of magnetic nanocomposite by an external magnetic field confirmed that the magnetically separated catalyst is highly suitable for recycling and reuse.

Sign in / Sign up

Export Citation Format

Share Document