Size control synthesis of palladium oxide nanoparticles by microwave irradiation

Nickel-substituted copper oxide nanoparticles at various concentrations were synthesized by the microwave irradiation technique. The consequence of nickel doping on crystal structure, optical properties, and magnetic properties was examined by means of X-ray diffractometer, ultraviolet-visible spectrometer, Fourier transform infrared (FT-IR) spectrometer, transmission electron microscope, and vibrating sample magnetometer (VSM). X-ray diffraction analysis shows that the samples are monoclinic and their crystallite size varies from 25[Formula: see text]nm to 42[Formula: see text]nm, and lattice constant significantly increases with nickel concentration. Additional increase of nickel content (7%) decreases the lattice constant. TEM micrograph witnessed that the prepared nanoparticles were sphere-shaped and the particle distribution is in the range between 20 and 40[Formula: see text]nm. Bandgap measurement reveals that both undoped and nickel-doped copper oxides are direct bandgap semiconductor materials with bandgaps of 3.21 and 3.10[Formula: see text]eV, respectively, FT-IR spectra of the synthesized samples confirmed the nickel doping. VSM studies confirmed the ferromagnetic behavior of the synthesized samples at room temperature. The results revealed that the nickel-doped copper oxide nanoparticles synthesized via the microwave irradiation method exhibit better magnetic properties than the undoped copper oxide.

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Size control synthesis and high coercivity L10-FePt nanoparticles produced by iron (III) acetylacetonate salt

Journal of Industrial and Engineering Chemistry ◽

10.1016/j.jiec.2014.08.022 ◽

2015 ◽

Vol 23 ◽

pp. 235-237 ◽

Cited By ~ 2

Author(s):

Hossein Zeynali ◽

Hossein Akbari ◽

S. Arumugam

Keyword(s):

Size Control ◽

Control Synthesis ◽

High Coercivity ◽

Fept Nanoparticles

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Size Control of Nanographene Supported Iron Oxide Nanoparticles Enhances Their Electrocatalytic Performance for the Oxygen Reduction and Oxygen Evolution Reactions

The Journal of Physical Chemistry C ◽

10.1021/acs.jpcc.9b05843 ◽

2019 ◽

Vol 123 (34) ◽

pp. 20774-20780 ◽

Cited By ~ 4

Author(s):

Ferdinand Hof ◽

Meng Liu ◽

Giovanni Valenti ◽

Emmanuel Picheau ◽

Francesco Paolucci ◽

...

Keyword(s):

Iron Oxide ◽

Oxygen Reduction ◽

Oxygen Evolution ◽

Iron Oxide Nanoparticles ◽

Size Control ◽

Oxide Nanoparticles ◽

Electrocatalytic Performance ◽

Supported Iron

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A High-Yield Synthesis of Chalcopyrite CuInS2Nanoparticles with Exceptional Size Control

Journal of Nanomaterials ◽

10.1155/2009/748567 ◽

2009 ◽

Vol 2009 ◽

pp. 1-7 ◽

Cited By ~ 11

Author(s):

Chivin Sun ◽

Joseph S. Gardner ◽

Endrit Shurdha ◽

Kelsey R. Margulieux ◽

Richard D. Westover ◽

...

Keyword(s):

Microwave Irradiation ◽

Size Control ◽

High Yield ◽

Single Source ◽

Icp Oes ◽

Single Source Precursors ◽

H Nmr ◽

High Yields ◽

Size Controlled

We report high-yield and efficient size-controlled syntheses of Chalcopyrite CuInS2nanoparticles by decomposing molecular single source precursors (SSPs) via microwave irradiation in the presence of 1,2-ethanedithiol at reaction temperatures as low as 100°C and times as short as 30 minutes. The nanoparticles sizes were 1.8 nm to 10.8 nm as reaction temperatures were varied from 100°C to 200°C with the bandgaps from 2.71 eV to 1.28 eV with good size control and high yields (64%–95%). The resulting nanoparticles were analyzed by XRD, UV-Vis, ICP-OES, XPS, SEM, EDS, and HRTEM. Titration studies by1H NMR using SSP1with 1,2-ethanedithiol and benzyl mercaptan were conducted to elucidate the formation of Chalcopyrite CuInS2nanoparticles.

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