Synthesis of micro sphere-like bismuth nanoparticles by microwave assisted polyol method; designing a novel electrochemical nanosensor for ultra-trace measurement of Pb2+ ions

2015 ◽  
Vol 39 (6) ◽  
pp. 4676-4684 ◽  
Author(s):  
Hossein Safardoust-Hojaghan ◽  
Masoud Salavati-Niasari ◽  
Mohammad Hassan Motaghedifard ◽  
Sayed Mostafa Hosseinpour-Mashkani
Keyword(s):  
Propylene Glycol ◽  
Polyol Method ◽  
Microwave Method ◽  
Bismuth Nanoparticles ◽  
Microwave Assisted ◽  
Electrochemical Nanosensor ◽  
Ultra Trace ◽  
Trace Measurement ◽  
Micro Sphere

Bi nanostructures were synthesized in the presence of propylene glycol as the solvent and surfactant through microwave method.

Fast microwave-assisted preparation of nickel–copper–chromium-layered double hydroxide as an excellent electrocatalyst for water oxidation

2021 ◽  
Author(s):  
Kamellia Nejati ◽  
Leila Jafari Foruzin ◽  
Zolfaghar Rezvani
Keyword(s):  
Charge Transfer ◽  
Layered Double Hydroxide ◽  
Water Oxidation ◽  
Bandgap Energy ◽  
Microwave Method ◽  
Optimal Amount ◽  
Microwave Assisted ◽  
Nickel Copper ◽  
Copper Chromium ◽  
Double Hydroxide

A well-designed NiCuCr-LDH was prepared using a simple microwave method. According to the OER results, doping optimal amount of Cu2+ into NiCr-LDH displayed superior OER activity, due to decreased bandgap energy and improved charge transfer.

Microwave-assisted Diels-Alder synthesis

2001 ◽  
Vol 79 (12) ◽  
pp. 1906-1909 ◽  
Author(s):  
Christopher K Jankowski ◽  
Gaëtan LeClair ◽  
Jacqueline MR Bélanger ◽  
Jocelyn RJ Paré ◽  
Marie-Rose VanCalsteren
Keyword(s):  
High Resolution ◽  
Microwave Synthesis ◽  
Alder Reaction ◽  
Diels Alder ◽  
Microwave Method ◽  
Diene Synthesis ◽  
Microwave Assisted ◽  
Diels Alder Reaction ◽  
Pyridine Carboxylate ◽  
Danishefsky's Diene

The synthesis of isoquinolinone carboxylates was performed using arecoline or its isomer N-methyl tetrahydro pyridine carboxylate with Danishefsky's diene via thermal or microwave assisted Diels-Alder reaction. The comparison of both condensation modes showed that the microwave method not only afforded higher yields of the adducts, but also lead to the formation of a new α,β-unsaturated pyridyl ketone. All structures were identified with the help of high resolution 2D NMR.Key words: Diels-Alder microwave assisted reaction, microwave synthesis, Michael, diene, isoquinoline carboxylate synthesis, Danishefsky diene synthesis, MAP Diels-Alder2.

scholarly journals Characterization of CdS Nanoparticles Synthesized Using Microwave-Assisted Polyol Method

2013 ◽  
Vol 667 ◽  
pp. 122-127 ◽  
Author(s):  
Nayereh Soltani ◽  
Elias Saion ◽  
Mohd Zobir Hussein ◽  
Robiah Bt. Yunus ◽  
Manizheh Navaseri
Keyword(s):  
Irradiation Time ◽  
Visible Spectrum ◽  
Blue Shift ◽  
Polyol Method ◽  
Molar Ratio ◽  
Cds Nanoparticles ◽  
Microwave Assisted ◽  
Uv Visible ◽  
Scherrer Formula ◽  
Average Size

Synthesis of cadmium sulfide (CdS) nanoparticles has been performed through the simple and rapid microwave-assisted polyol method, using cadmium chloride and thioacetamide as the cadmium and sulfur sources respectively. Attempts were made to control the size and crystallinity of the CdS nanoparticles by controlling microwave irradiation time and the initial molar ratio of the cadmium and sulfur sources. The structure of nanoparticles characterized by X-ray diffraction (XRD) was hexagonal. No peaks corresponding to impurities were detected, indicating the high purity of the product. The size of the prepared samples was calculated by Debye–Scherrer formula according to XRD spectra. The morphology of particles was observed in the transmission electron microscopy (TEM) images was spherical. The average size of nanoparticles was also estimated from these images. The optical absorption of CdS nanoparticles studied by UV-Visible spectroscopy showed a blue shift from bulk CdS due to quantum confinement. The size of nanoparticles was calculated by Brus formula according to UV-Visible spectrum and compared to XRD and TEM results.

A RAPID PREPARATION OF BISMUTH NANOWIRES VIA A MICROWAVE-ASSISTED POLYOL METHOD

2005 ◽  
Vol 19 (15n17) ◽  
pp. 2829-2834 ◽  
Author(s):  
BO ZHOU ◽  
TING REN ◽  
JUN-JIE ZHU
Keyword(s):  
Microwave Irradiation ◽  
Ethylene Glycol ◽  
Alkaline Solution ◽  
Polyol Method ◽  
Rapid Preparation ◽  
Microwave Assisted ◽  
Bismuth Nanowires ◽  
20 Nm

Bismuth nanowires with width of 10~20 nm, and length of ~200 nm were rapidly prepared from the reduction of Bi ( NO 3)3•5 H 2 O by ethylene glycol (EG) in alkaline solution under microwave irradiation for 5 minutes. The product was characterized by XRD, TEM and SAED. The effects of the microwave irradiation, the alkaline solution, and the solvent on the formation of bismuth nanowires were also investigated.

Preparation and Characterization of Cu2SnSe4 Nanoparticles Using a Microwave-Assisted Polyol Method

2004 ◽  
Vol 2004 (9) ◽  
pp. 1859-1864 ◽  
Author(s):  
Haviv Grisaru ◽  
V. G. Pol ◽  
Aharon Gedanken ◽  
Israel Nowik
Keyword(s):  
Polyol Method ◽  
Microwave Assisted

scholarly journals Engineering Iron Oxide Nanocatalysts by a Microwave-Assisted Polyol Method for the Magnetically Induced Degradation of Organic Pollutants

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 1052
Author(s):  
Alvaro Gallo-Cordova ◽  
Sabino Veintemillas-Verdaguer ◽  
Pedro Tartaj ◽  
Eva Mazarío ◽  
María del Puerto Morales ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Organic Pollutants ◽  
Cost Effective ◽  
Polyol Method ◽  
Magnetic Iron Oxide Nanoparticles ◽  
Promising Alternative ◽  
Microwave Assisted ◽  
Degradation Rates ◽  
Iron Leaching ◽  
Scalable Methods

Advanced oxidation processes constitute a promising alternative for the treatment of wastewater containing organic pollutants. Still, the lack of cost-effective processes has hampered the widespread use of these methodologies. Iron oxide magnetic nanoparticles stand as a great alternative since they can be engineered by different reproducible and scalable methods. The present study consists of the synthesis of single-core and multicore magnetic iron oxide nanoparticles by the microwave-assisted polyol method and their use as self-heating catalysts for the degradation of an anionic (acid orange 8) and a cationic dye (methylene blue). Decolorization of these dyes was successfully improved by subjecting the catalyst to an alternating magnetic field (AMF, 16 kA/m, 200 kHz). The sudden temperature increase at the surface of the catalyst led to an intensification of 10% in the decolorization yields using 1 g/L of catalyst, 0.3 M H2O2 and 500 ppm of dye. Full decolorization was achieved at 90 °C, but iron leaching (40 ppm) was detected at this temperature leading to a homogeneous Fenton process. Multicore nanoparticles showed higher degradation rates and 100% efficiencies in four reusability cycles under the AMF. The improvement of this process with AMF is a step forward into more sustainable remediation techniques.

Sign in / Sign up

Export Citation Format

Share Document