Optimization of Adsorption Parameters for Lead (II) Removal from Wastewater using Box-Behnken Design
Optimization of Al 6063 Button Head Rivet FEM Analysis Subjected to CRYO ECAP and RT ECAP
Effect of (SiC+Gr) Addition on the Corrosion Behavior of Powder Metallurgy Copper MMC
Assessment of Reuse Potential of Low-Grade Iron Ore Fines through Beneficiation Routes
Characterization of Copper MMC Reinforced with SiC and Graphite in Equal Proportion Made by the Powder Metallurgy Route
Evaluation and Comparison of Turning Process Performance during Machining of D2 Steel Material under Two Sustainable Machining Techniques
An Investigation on Recent Trends in Metamaterial Types and its Applications
A Review on Plasma Ion Nitriding (PIN) Process
A Review on Friction and Wear Behaviors of Brake’s Friction Materials
Comparative Parabolic Rate Constant and Coating Properties of Nickel, Cobalt, Iron and Metal Oxide Based Coating: A Review
Electro-Chemical Discharge Machining- A review and Case study
Comparison Of Composite Proton Conducting Polymer Gel Electrolytes Containing Weak Aromatic Acids
Enhancement in Electrical Properties of PEO Based Nano-Composite Gel Electrolytes
Electrical Properties of Nanocomposite Polymer Gels based on PMMA-DMA/DMC-LiCLO2 -SiO2
Effect of Donor Number of Plasticizers on Conductivity of Polymer Electrolytes Containing NH4F
PMMA Based Polymer Gel Electrolyte Containing LiCF3SO3
This paper investigates two areas that Graphene has shown potential in electronics; applications in existing electronics technology and applications in theoretical future biotechnology. The paper utilises research from scientific papers, reports, and journal articles supplemented by industry expert testimonies and a consumer survey. The paper then goes on to discuss how Graphene may enable the production of bio-inert Solution Gated Field Effects Transistors that could enable bidirectional interfacing between electronics and biological tissue, allowing neural interfaces that could allow products such as myoelectric prosthesis to be controlled naturally and provide natural sense feedback to the user. Finally, the paper looks at two current production methods; Micromechanical Cleavage and Chemical Vapour Deposition.
In the present paper, the authors report their work on bio synthesis of silver nanoparticles by aqueous extraction of seeds of Phaseolus vulgaris. These synthesized nanoparticles are characterized by Uv-Vis Spectroscopy, Fourier Transform (FT) infrared spectrometry, Raman Spectroscopy, and XRD, and then evaluated for their corrosion inhibition potential for mild steel in acid media. The results show that the phytochemicals present in the seed extract of Phaseolus vulgaris can act as a reducing agent as well as capping agent for nanoparticles. Silver nanoparticles in the form of silver oxide were confirmed in the XRD study with the average size 15.75 nm and cubic in nature. Corrosion inhibition potential of these particles has been determined by mass loss method. Results show that these particles can inhibit rate of corrosion of mild steel in acid media if the uniform protective layer would be formed on the metal surface, and can be used in industries as a corrosion inhibitor. The Scanning Electron Microscopy image of the mild steel samples with and without Ag2O nanoparticles shows that there is adsorption of nanopaticles on to the metal surface in the presence of acid media.
In this work, Zinc Oxide nanoparticle was developed over reduced graphene oxide sheets and cyclic voltammetry was performed with different nanomaterial composites fabricated over electrodes and their graphs were compared. There was an exceptional rise in current, which shows that the composite could be used to catalyse different reactions, which favour transfer of electrons like Hydrogen Reduction Reaction and Oxygen Reduction Reactions. The graphene oxide (GO) was synthesised by improved Hummers method and it was reduced fully by treating it with by L-Ascorbic acid. The composite of Zinc Oxide Nanoparticles and Reduced Graphene Oxide was synthesised and characterised using different characterization techniques.
InxSe1-x (x=0.2 and x=0.6) crystals have been grown by Bridgman/Stockbarger method. The compositional, morphological and structural properties of InxSe1-x semiconductor crystals have been investigated using energy dispersive X-ray (EDX), scanning electron microscopy (SEM) and X-ray diffractometer (XRD) techniques. The freshly cleaved crystals acquired from ingot have mirror-like surface. The powder XRD results revealed that the grown sample was crystalline with a hexagonal structure. SEM image showed that InxSe1-x crystals have smooth, homogenous and layered surface. The crystalline developments in the InxSe1-x crystals have been investigated by X-ray peak broadening. The Williamson Hall (W-H) analysis and size strain plot methods are used to study the individual contributions of crystallite sizes and lattice strain on the peak broadening of the InxSe1-x crystals. The physical parameters such as strain, stress, and energy density values were evaluated more specifically for all the reflection peaks of XRD corresponding to the hexagonal phase of InxSe1-x crystals from the modified form of the W-H plot using uniform deformation model (UDM), uniform stress deformation model (USDM), uniform deformation energy density model (UDEDM) and by the size strain plot method (SSP). The results obtained showed that the mean crystallite size of the InxSe1-x crystals determined from the W-H analysis and the SSP methods are inter-correlated.
Titania photocatalyst was synthesized by sol-gel method using titanium tetra isopropoxide (TTIP) as a precursor. The TiO2 was annealed at 600oC and 800oC and then characterized by X-ray diffractometer (XRD), UV-Vis DRSand FTIR spectroscopy. X-ray diffraction analysis confirms that the TiO2 annealed at 600oC was found to be anatase phase and annealed at 800oC was found to be rutile phase. The crystalline size of anatase TiO2 is about 17 nm and rutile is about 50nm. The characteristic IR bandobserved from 400 to 900 cm−1corresponds to the Ti–O bond stretching vibrations can be clearly observed from FTIR analysis. The indirect band gap energy of rutile TiO2 is about 2.83 eV and anatase TiO2 is about 3.00 eV.Photocatalytic activity of TiO2 was evaluated by photocatalytic degradation of methylene blue (MB) dye in aqueous solution as a model pollutant under visible light irradiation. Aanatase TiO2 exhibited more efficient PCA than the rutile TiO2. After 4h photodegradation of MB solution was obtained to 96% foranatase TiO2 and 90% for rutile. The small crystallite size and anatase phase probably resulted in the high photocatalytic activity of TiO2.
In the second generation thin film solar cell, Copper Zinc Tin Selenium (CZTSe) thin film is considered as the quintessential absorber layer in solar cell as its constituents are earth abundant and non-toxic, making it environmental friendly. Many fabrication methods have been employed to fabricate the films like Thermal evaporation method, pulsed layer deposition, RF-DC Sputtering, etc. The authors have monitored the aspects that highly influence the band gap of CZTSe thin films during the deposition process. This paper recapitulate the parameters that affect the band gap of CZTSe thin film as an absorber layer like substrate temperature, annealing temperature, and order of precursors.