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Mercuric iodide and bismuth tri-iodide nanoparticles were synthesized by suspension in octadecene, from Hg(NO3)2. H2O and I2, and from Bi(NO3)3. 5H2O and I2, respectively. The best synthesis conditions were 2 hrs. at 60-70 oC, followed by 10 min. at 95-110 oC for mercuric iodide nanoparticles, and 4 hrs. at 80-110 oC, followed by 10 min. at 180-210 oC for bismuth tri-iodide ones. Nanoparticles were...
The NiCoFerrite nanoparticle has been prepared using thermal method. Polyvinyl pyrrolidon (PVP) was used as a reducing agent due to its reducing effect on agglomeration of particles. The characterization studies such as X-ray diffraction (XRD) and transmission electron microscopy (TEM) have been done for explore the particles size. By Scherer's equation the average particles size has been estimated...
An amorphous silicon suboxide was synthesized by co-sputtering of Au and SiO2 using RF magnetron sputtering. The extracted data from XRD, SEM as well as EDX were utilized to characterize the surface of the thin film samples.
Regularly faceted copper (Cu) particles ranging from tens of nanometers to submicron were obtained by annealing Cu-Zr films on polyimide and single Si (100) substrates. XRD, TEM, SEM and EDS were used to characterize their microstructural properties. The results show that these particles are pure Cu element and single crystals with [111] preferred orientation. Systematical analysis demonstrates that...
The flame-made (5/5) pure ZnO and WO3-doped ZnO nanoparticles containing 0.25, 0.50, and 0.75 mol% of WO3 were successfully synthesized by flame spray pyrolysis (FSP). These materials were studied for NO2, CO and H2 gas sensing at different gas concentrations and operating temperatures ranging from 300-400??C in dry air. The crystalline phase, morphology and size of the nanoparticles were characterized...
The CdSe nanoparticles have been synthesized by hot-injection method, and thermal annealing was used to improve the crystallinity of synthesized nanoparticles and reconstruct the surface of nanoparticles. The synthesized and annealed CdSe nanoparticles were characterized by TEM, XRD and PL spectra. After thermal annealing followed by a solvent exchange process, the CdSe nanoparticles were used to...
In the present study, non-stoichiometric tungsten oxide (WO3-x) nanomaterials synthesized by a modified plasma arc gas condensation technique were added into anatase titanium oxide (a-TiO2) which was used as photoanode materials in dye-sensitized solar cells (DSSC). The WO3-x/a-TiO2 sample was characterized by FESEM, XRD, HRTEM, XPS and UV-visible spectra techniques. The photovoltaic efficiency of...
Ultrasonically assisted hydrothermal synthesis of PZT thin films was performed using an ultrasonic transducer integrated into the lid of an autoclave. Direct ultrasonic irradiation of 23 W at 53 kHz was carried out during the hydrothermal synthesis at a reaction temperature of 140degC for 24 h. The resultant PZT thin film was characterized using scanning electron microscopy (SEM) and X-ray diffraction...
Improvement of dye sensitized solar cell was investigated using methyl-violet dye and nanocrystalline ZnO thin film electrodes. A low cost fabrication method and low cost materials were used to prepare this photocell. The X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to characterize the microstructure and surface properties of dye coated ZnO electrodes. According to the...
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