International Journal of Bio-Inorganic Hybrid Nanomaterials: 5 (4)

Open Access Article

1 - In vivo Effects of CdSe Injection on Embryonic Development of Reproductive System

The use of quantum dots (QDots) as bright and photostable probes for long-term fluorescence imaging is gaining more interest. Thus far, (pre)clinical use of QDots remains limited, which is primarily caused by the potential toxicity of QDots. Most QDots consist of Cd2+ i More

The use of quantum dots (QDots) as bright and photostable probes for long-term fluorescence imaging is gaining more interest. Thus far, (pre)clinical use of QDots remains limited, which is primarily caused by the potential toxicity of QDots. Most QDots consist of Cd2+ ions, which are known to cause high levels of toxicity. Therefore, the cytotoxic effects of CdSe quantum dots on embryonic development of male reproductive system are presented in this study. Manuscript profile

Open Access Article

2 - Synthesis of Iron Oxide Nanoparticles using Borohydride Reduction

Iron oxide (Fe2O3) nanoparticles were synthesized by a simple approach using sodium borohydride (NaBH4) and Iron chloride hexahydrate (FeCl3.6H2O). Their physicochemical properties were characterized by high resolution transmission electron microscopy (HRTEM), scanning More

Iron oxide (Fe2O3) nanoparticles were synthesized by a simple approach using sodium borohydride (NaBH4) and Iron chloride hexahydrate (FeCl3.6H2O). Their physicochemical properties were characterized by high resolution transmission electron microscopy (HRTEM), scanning electron microscopy (SEM), X-ray diffraction (XRD) and electron dispersive spectroscopy (EDS). XRD pattern showed that the iron oxide nanoparticles exhibited rhombohedral structure and gamma-Fe2O3 (maghemite) to alpha-Fe2O3 (hematite) structural phase transition in nanocrystals. The particle size of α-Fe2O3 was around 28 nm in diameter as estimated by XRD technique. The surface morphological studies from SEM depicted spherical particles with formation of clusters by increasing annealing temperature. The EDS spectrum showed peaks of iron and oxygen free of impurity. Manuscript profile

Open Access Article

3 - Nano-bio Hybrid Material Based on Bacteriorhodopsin and ZnO for Bioelectronics Applications

Bioelectronics has attracted increasing interest in recent years because of their applications in various disciplines, such as biomedical. Development of efficient bio-nano hybrid materials is a new move towards revolution of nano-bioelectronics. A novel nano-bio hybrid More

Bioelectronics has attracted increasing interest in recent years because of their applications in various disciplines, such as biomedical. Development of efficient bio-nano hybrid materials is a new move towards revolution of nano-bioelectronics. A novel nano-bio hybrid electrode based on ZnO–protein for bioelectronics applications was prepared and characterized. The electrode was made by covalent attachment of bacterorhodopsin (bR) on to the ZnO substrate. The protein was attached to the ZnO nanoporous film coated on FTO glass with and without linker. In the immobilization method by adsorption without linker, protein was bonded to ZnO via electrostatic interactions and in the immobilization method protein was attached covalently. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) were employed to investigate the surface features of the ZnO thin film and attached protein. ATR-FTIR was used to confirm the protein attachment. Manuscript profile

Open Access Article

4 - Influences of Co2+ & Er3+ Co-doping on the Structural and Physical Properties of ZnO Nanocrystals Synthesized by Hydrothermal Route

Co2+ & Er3+ co-doped ZnO nanocrystals were synthesized by the hydrothermal method at 180°C and pH= 12 for 48 h. Powder XRD patterns indicate that the Zn1-2xErxCoxO crystals (0.00<x≤0.035) are isostructural with ZnO. The cell parameters increase for Er3+ an More

Co2+ & Er3+ co-doped ZnO nanocrystals were synthesized by the hydrothermal method at 180°C and pH= 12 for 48 h. Powder XRD patterns indicate that the Zn1-2xErxCoxO crystals (0.00<x≤0.035) are isostructural with ZnO. The cell parameters increase for Er3+ and Co2+ upon increasing the dopant content (x). SEM images show that doping of Er3+ and Co2+ into the sites of Zn2+ does not change the morphology of ZnO. The FT-IR results indicate that the change in the peak position of ZnO absorption bands reflect that Zn-O-Zn network is perturbed by the presence of Er and Co in its environment. Semiconductor properties of these oxides are investigated by UV-Vis spectroscopy that there are red shifts as well as decreasing intensity of absorption peaks in doped nanomaterials. Manuscript profile

Open Access Article

5 - Significance of Chemical Decomposition of Chloroethyl Phenyl Sulfide (CEPS) using Zinc-Cadmium Oxide (ZnO-CdO) Nanocomposite

The zinc-cadmium oxide (ZnO-CdO) nanocomposites with different weight percentages of cadmium oxide (CdO) nanoparticles were successfully synthesized by the sonochemical method using zinc and cadmium nitrates as precursors to probe their nano-structured surfaces for the More

The zinc-cadmium oxide (ZnO-CdO) nanocomposites with different weight percentages of cadmium oxide (CdO) nanoparticles were successfully synthesized by the sonochemical method using zinc and cadmium nitrates as precursors to probe their nano-structured surfaces for the decomposition reactions of chloroethyl phenyl sulfide (CEPS) as a surrogate of sulfur mustard agent simulant. Scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR) techniques were used to consider the characterization and determination of the composition of the synthesized nanocomposites. The reactions were carried out in methanol, chloroform and n-heptane solvents and monitored by Gas chromatography equipped with Flame ionization detector (GC-FID) and Gas chromatography coupled with a mass spectroscopy analyses. The GC analysis clearly demonstrated that maximum decomposition (100%) of CEPS took place on the surface of porous ZnO-25.99 wt% CdO nanocomposite catalyst in n-heptane solvent, after 6 h at room temperature (RT). Manuscript profile

Open Access Article

6 - A Three-Component 1,3-Dipolar Cycloaddition Reaction of Azomethine Ylide for Synthesis of New Bis-spiro-oxindolo(pyrrolizidines/pyrrolidines) Derivatives

The development of multicomponent reactions (MCRs) designed to produce elaborate biologically active compounds has become an important area of research in organic, combinatorial, and medicinal chemistry. A comparative study of the synthesis of new bis-spiro-oxindolo(pyr More

The development of multicomponent reactions (MCRs) designed to produce elaborate biologically active compounds has become an important area of research in organic, combinatorial, and medicinal chemistry. A comparative study of the synthesis of new bis-spiro-oxindolo(pyrrolizidines/pyrrolidines) ring systems by the cycloaddition of azomethine ylides generated by a decarboxylative route from sarcosine/proline and isatin with the bis-chalcone using various conditions is described. As part of our endeavor to synthesize new bis-spiro-oxindolo(pyrrolizidines/pyrrolidines) derivatives containing two spiro carbons which often enhances the biocidal profile or may create new medicinal properties remarkably. Herein we report the facile synthesis of bis-spiro-oxindolo(pyrrolizidines/pyrrolidines) derivatives, in a highly regio- and stereoselective manner through 1,3-dipolar cycloaddition reaction of bis-dipolarophiles with the 1,3-dipole generated from isatin derivatives and secondary amino acids (L-proline or sarcosine). The structures of cycloaddition products were assigned by IR, 1HNMR, 13CNMR and Mass spectral data. Manuscript profile

Open Access Article

7 - Calcination Treated of Mixed Spinel ZnFe2O4 Synthesized by Combustion Method

ZnFe2O4 mixed spinel ferrite nanoparticles obtained through a citrate-nitrate combustion method. Ignited products calcined at different temperatures in 600-900ºC range and effect of calcination treatment temperature investigated. Final Products characterized by X-r More

ZnFe2O4 mixed spinel ferrite nanoparticles obtained through a citrate-nitrate combustion method. Ignited products calcined at different temperatures in 600-900ºC range and effect of calcination treatment temperature investigated. Final Products characterized by X-ray Diffraction (XRD), Fourier-Transform Infrared spectroscopy (FTIR), and Field Emission Scanning Electron Microscopy (FESEM). The average particle size calculated from Scherrer equation. Results demonstrate good agreement with total rule of increase in particle size by increasing of calcination temperature. Average particle size from X-ray data sheets for 900ºC was about 54 nm. Manuscript profile

Open Access Article

8 - Polyelectrolyte-Modified Microemulsions: Formation of Nanoparticles in the Presence of Anionic and Cationic Polyelectrolyte

The paper is focused on the formation of calcium phosphate nanoparticles (CP) in polyelectrolyte-modified microemulsions, in a microemulsion template phase consisting of cyclohexane, water, anionic surfactantant and cosurfactant, in the presence of anionic and cationic More

The paper is focused on the formation of calcium phosphate nanoparticles (CP) in polyelectrolyte-modified microemulsions, in a microemulsion template phase consisting of cyclohexane, water, anionic surfactantant and cosurfactant, in the presence of anionic and cationic polyelectrolyte. It is shown that polyelectrolyte, can be incorporated into the individual inverse microemulsion droplets. The microemulsion droplets and polyelectrolyte-filled microemulsion droplets can be successfully used as a template phase for the nanoparticles formation. Prepared CP in the presence of anionic polyelectrolyte has a different morphology from samples which are synthesized in the presence of cationic polyelectrolyte. Cationic polyelectrolyte(poly diallyl dimethyl ammonium chloride PDADMAC) leads to formation of needle-like CP (10-20 nm in diameter and 100-150 nm in length). Formation of CPat room temperature was confirmed by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). Size and morphology of the CP samples were characterized using transmission electron microscopy (TEM). Manuscript profile

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