In the present work, gold (Au), silver (Ag), and copper (Cu) based mono- bimetallic NPs are prepared using a cost-effective facile wet chemical route. The pH for synthesis is optimized in accordance with optical spectra supported by finite difference time domain simulation studies. FESEM TEM micrographs used to analyze morphology of nanoparticles. images nanoparticles (BMPs) verified their nature. XRD studies confirmed formation fcc-structured NPs. Photoluminescence as-synthesized good...

Abstract Bimetallic nanoparticles (BNPs) have drawn significant attention due to their numerous applications. They demonstrate enhanced optical, electrical, thermal, and catalytic properties the synergistic effects of monometals present in them. In this work, CuAg AuAg BNPs been synthesized using a facile economical chemical reduction method. Optical characterization was carried out UV–visible spectroscopy, effect pH on optical absorbance studied. For BNPs, optimum observed be at 9.4 6.39,...

The present study has been aimed to understand the role of electrode material, its surface modification by organic molecules, solvent and analyte in an electrochemical cell on cyclic voltammograms.To these effects, different cells were constituted using solvents thiol measure voltammograms.The measurements clearly show that parameters are significantly important ones dictating nature observed effect scan rate voltammograms with various rates.A plot Randles-Sevcik equation yield a straight...

Highly conducting antimony doped tin oxide (SnO2:Sb) films are electrografted with suitable organic molecules to study their electrolytic behavior. A series of molecules, such as heptanethiol, dodecanethiol and octadecanethiol bonded electrode surfaces. Electrolytic capacitors were formed on both unmodified chemically modified electrodes using KCl H2SO4 electrolytes. This molecular modification significantly enhances the current levels in cyclic voltammograms, there is a clear shift...

Chemically reduced graphene oxide possesses unique properties and leads to a secure processing method for many applications. The electrical optical of are strongly dependent on the chemical atomic structure. In present work, reduction synthesized multilayer sheets by both thermal methods use them as substrate in field molecular electronic device fabrication is reported. 1-Dodecanethiol molecules used covalently bond surface atoms constitute devices. metal-organic molecules-reduced...

In the present work, we describe a simple and easy method for deposition of nanostructured cadmium oxide films on glass by spray pyrolysis. The electrochemical capacitive properties these have been studied different electrolyte species under scan rates. results show high value specific capacitance 18 F g−1 in 1 M NaOH rate 10 mV s−1. This is highest ever reported thin films. These emphasize that ion diffusion between electrode significantly due to highly porous nanostructure confirms as...

Abstract The optical and morphological properties of the vacuum-evaporated silver (Ag) nanoparticulate films on softened polyvinyl alcohol (PVA) modified with 3-mercaptopropyl trimethoxysilane (MPTMS) 3-aminopropyl (APTMS) dopants are reported. topography particulate is characterized by field-emission scanning electron microscopy. spectra broadening, red-shift, increase in intensity values plasmonic resonance peak nature dopant have a strong dependence particle size, shape, inter-particle...

Volatile organic compounds (VOCs) are harmful to human beings and animals. VOCs include a carbon compound its derivatives. irritate the eyes, ears, throat, ahigh concentration of may cause cancer; also, it affects central nervous system. A below 0.3 mg/m3 is harmless, above which beings. The present work discusses detection using lab-made portable device setup. Hydrothermally synthesized tin oxide (SnO2) nanocubes used as an active material for VOC detection. SnO2 pellet prepared hydraulic...

The fabrication and characterization of a paper pencil based resistive touch sensor is carried out in the present work. detects effective change resistance, when finger placed on it. An ash less, low cost, easy to access, bio-degradable, flexible, light weight, fabricate ultra-thin developed by drawing interdigitated graphite electrodes Whatman filter grade 42. Change resistance due path created for flow electrons, placed. Current versus time ΔR/Ro fabricated device done using Keithley 2450...

Obtaining free-standing crack-free graphene oxide and reduced films is challenging. Free-standing widely used to fabricate flexible sensors energy storage devices. The present work focused on the certainty of pure precursors in preparing film. Four samples are synthesized using known Hummer's method. were studied scanning electron microscopy, energy-dispersive X-ray spectroscopy, diffraction, Raman Fourier transform infrared spectroscopy. fabrication film simple cost effective can be...

Abstract Nanofluids are a class of fluids prepared by dispersing nanoparticles in conventional base fluids. Owing to their excellent thermo-physical properties, nanofluids find potential applications manufacturing industries. They introduced overcome the limitation with using traditional like water having low thermal conductivity (~ 0.612 W/mK at room temperature). The fluid is considerably increased adding modest number it. In present work, we have silver and nanorods simple chemical...

Soldering is a physical process in which one metal melts and joins the other to form strong bond, further helps electron conduction increases mechanical strength any electronic circuits. The present work demonstrates development of graphene-based flux comprising 2 g graphene ml phosphoric acid for residue-free, high stability, durable, two-step soldering copper wire on surface copper-based printed circuit board. can be applied copper, soldered ambient conditions using commercial iron at...

Soldering is a physical process in which one metal melts and joins the other to form strong bond, further helps electron conduction increases mechanical strength any electronic circuits. The present work demonstrates development of graphene-based flux comprising 2 g graphene ml phosphoric acid for residue-free, high stability, durable, two-step soldering copper wire on surface copper-based printed circuit board. can be applied copper, soldered ambient conditions using commercial iron at...

Abstract Perovskite structured Dy doped BZT-BCNT system has been investigated with variation of doping through the solid-state reaction method. X-ray diffraction (XRD) and microscopic studies confirm results in rhombohedral stoichiometry without any secondary phases, uniform grain growth, respectively. Tolerance factor electronegativity also presence ceramic a stable crystallinity forming vacancy sites for oxygen ions. Optimum piezoelectric properties non-Pb systems were obtained due to...

Silver crystallite-graphene oxide (Ag-Nps/GO) composites are widely used for various applications and an attractive material next-generation nano-electronic devices, we demonstrate their use in humidity sensors. crystallite (Ag-Nps) is prepared through a single step by reduction method at room temperature. The resulting pure phase as confirmed X-ray diffraction (XRD) without any traces of oxides or secondary impurities. size around 1 μm. These crystallites blended with synthesized graphene...