Manipulation of AgNPs coated on selenium/carbonated hydroxyapatite/ε-polycaprolactone nano-fibrous via pulsed laser deposition for wound healing applications

Foundations Of Materials Science And Engineering is writen by William Smith in English language. Release on 2009-04-09, this book has 1056 page count that contain essential information with easy reading experience. The book was publish by McGraw-Hill Science/Engineering/Math, it is one of best engineering & transportation book genre that gave you everything love about reading. You can find Foundations Of Materials Science And Engineering book with ISBN 0073529249.

An Introduction to Materials Engineering and Science for Chemical and Materials Engineers

Graphene oxide, silver and copper oxide nanoparticles display photoactivated antibacterial behavior owing to their ability to generate charge carriers via light exposure. In this work, silver nanoparticles (AgNPs) and copper oxide nanoparticles (CuONPs) were embedded through graphene oxide (GO) using laser ablation technique. The microstructural behavior of the synthesized compositions has been investigated via XRD and TEM. The optical properties were studied by (UV–Vis), while the antibacterial properties were investigated in addition to the cell viability towards normal cell line (HFB4) in vitro. The antibacterial activity of GO was enhanced significantly with addition nanoparticles; by meaning, the inhibition zone enlarged from 5.4 mm with pure GO to be around 11.2 mm against E. coli with contribution of CuONPs. This trend of enhancement suggests that GO could be a great platform for different kinds of photo-activated antibacterial to be recommended for versatile biomedical applications.

Silver and copper oxide nanoparticles-decorated graphene oxide via pulsed laser ablation technique: Preparation, characterization, and photoactivated antibacterial activity

Blend biopolymeric nanofibrous scaffolds of cellulose acetate/ε-polycaprolactone containing metallic nanoparticles prepared by laser ablation for wound disinfection applications.

Methylene blue degradation under visible light of metallic nanoparticles scattered into graphene oxide using laser ablation technique in aqueous solutions

Nanotechnology manufacturing is rapidly developing and promises that the essential changes will have significant commercial and scientific impacts be applicable in an extensive range of areas. In this area, cobalt ferrite nanoparticles have been considered as one of the competitive candidates. The present study is based on the investigation of the effect of rare-earth (RE) incorporation on the physical properties of CoFe2O4. Rare-earth ions doped cobalt ferrites with composition CoRE0.025Fe1.975O4 where RE are Ce, Er and Sm have been synthesized by citrate auto combustion technique. Characterization is achieved using X-Ray diffraction (XRD) technique for structural analysis. The obtained data show that the samples exhibit a single-phase spinel structure. RE is successfully substituted into the spinel lattice without any distortion and it acts as inhibiting agent for grain growth. Room temperature M–H curves exhibit ferrimagnetism behavior with a decrease in saturation magnetization and coercivity indicating these materials can be applicable for magnetic data storage and magneto-recording devices. The electrical conductivity is studied as a function of frequency in the temperature range of 300–700 K. The conduction mechanism is attributed to the hopping mechanism. The Seebeck coefficient S is found to be positive for Ce indicating that Co/Ce ferrite behaves as a p-type semiconductor. While it is fluctuated between positive and negative for Er/Sm-doped samples throughout the studied temperature range. The cobalt doped with Er3+ and Sm3+ exhibits degenerated semiconductor trends at higher temperatures. Such data offer a new opportunity for optimizing and improving the performance of cobalt ferrite where the physical properties are decisive.

Comparative study on the physical properties of rare-earth-substituted nano-sized CoFe 2 O 4

Novel multiferroic La0.95Sb0.05FeO3 orthoferrite

Synchrotron radiation X-ray absorption fine structure and magnetization improvement of A-site Ce3+ doped LaFeO3

The perovskite NdCoO3 nanoparticles were prepared by the citrate auto combustion method. The synthesized powders were characterized by XRD, HRTEM, EDAX, and AFM analyses. The XRD pattern of NdCoO3 confirms the orthorhombic perovskite structure with an average crystallite size of 14.46 nm. The EDAX data indicate that the precursors have fully undergone the chemical reaction to form the predictable composition of the investigated sample. The magnetic hysteresis properties were carried out at room temperature and 100 K. At low temperature, the coericivity of the investigated samples is approximately equal to 22.644 G which is approximately 2.5 greater than its value at room temperature. The investigated sample shows paramagnetic behavior at both temperatures. This behavior can be attributed to the change of electron configurations and ligand field states. The ferroelectric nature was identified by taking the P–E loops at various applied voltages. The spin state of cobalt ions plays an important role in the magnetic properties and humidity-sensing behavior. The humidity-sensing behavior of the prepared sample was studied in a wide range of working humidity (11–97% RH) and testing frequency (100 Hz–100 kHz). The proposed humidity sensor was evaluated in terms of hysteresis, repeatability, and recovery time. Based on the obtained data the optimum testing frequency was chosen to be 100 Hz. The proposed sensor shows a very fast response of 3 s for low humidity. The humidity sensor exhibits good sensitivity over a middle RH range (11–43%).

Synthesis, characterization of NdCoO 3 perovskite and its uses as humidity sensor

Cobalt nanoferrites with formula CoFe2O4, and CoFe2O4/GR were synthesized using a citrate auto-combustion method The prepared samples were characterized by X-ray diffraction, scanning electron microscopy (SEM) and the Fourier-transform infrared (FTIR) spectroscopy The dependence of structure, magnetic and optical properties of cobalt/graphene nanocomposites on the graphene content was studied The obtained data show that the CoFe2O4 nanoparticles are homogenously decorated on the graphene layers, which act as magnetically inactive layers in turn affecting the magnetization The high coercivity Hc values reflect that CoFe2O4/GR nanocomposites are hard magnets at room temperature The energy band gap of the cobalt/graphene is estimated using Kubelka–Munk equation The energy gap of the investigated nanocomposites was found about 14 eV for direct transition The samples with high saturation magnetization values can affect by the external magnetic field, which is favorable to their application in high adsorption capacity

M. M. Arman

Papers

Comparative study on the physical properties of rare-earth-substituted nano-sized CoFe 2 O 4

Novel multiferroic La0.95Sb0.05FeO3 orthoferrite

Synchrotron radiation X-ray absorption fine structure and magnetization improvement of A-site Ce3+ doped LaFeO3

Synthesis, characterization of NdCoO 3 perovskite and its uses as humidity sensor

Optimizing the physical properties of cobalt/graphene nanocomposites for technological applications