Solar energy can provide an abundant source of renewable (electrical and thermal). However, because its unsteady nature, the storage solar will become critical when a significant portion total be provided by energy. In this paper, current technologies are reviewed. Storage methods classified into categories according to capacity discharge time. New developments in require advances chemical engineering materials science. Life cycle assessment (LCA) is important tool evaluate consumption...

For the last decade, researchers have attempted to construct photovoltaic (PV) devices using a mixture of inorganic nanoparticles and conjugated polymers. The goal is layers that use best properties each material e.g., flexibility from polymer high charge mobility or blue absorbance complementing red nanoparticles. This critical review discusses main obstacles efficient hybrid organic/inorganic PV device design in terms contributions external internal quantum efficiencies. We discuss...

Synthesis and characterization of iron oxide nanoparticles coated with a large molar weight dextran for environmental applications are reported. The first experiments involved the synthesis which were at different concentrations. was performed by co-precipitation technique, while coating carried out in solution. obtained characterized using scanning electron microscopy (SEM), transmission (TEM), X-ray diffraction spectrometry, Fourier transform infrared spectroscopy superconducting quantum...

Abstract In this study, we aimed to enhance the photocatalytic performance of molybdenum oxide (MoO 3 ) thin films by doping with silver (Ag) via a spray pyrolysis technique. The primary objective for incorporation was intended introduce additional energy levels into band structure MoO , improving its efficiency. Structural, optical, and properties were analyzed using X-ray diffraction (XRD) optical spectroscopy. XRD results confirmed an orthorhombic phase (040) preferential orientation all...

This paper reports on the influence of various processing parameters and different SiCp proportions outcome mechanical, tribological, microstructural, microcompositional investigations Al-Cu based composites used as potential brake friction materials for eco-friendly vehicle parts. The were obtained by powder metallurgy, then sintered composite was treated at 515 ± 5 °C/6 h, quenched in water, artificially aged temperatures times. microstructural made using an environmental scanning electron...

A new approach has been used to minimize surface degradation of the LiMn2O4 cathode in lithium-ion batteries by using modification. particles as active material fabrication were modified adsorption poly(diallyldimethylammonium chloride) (PDDA). The and electrochemical performance characterized compared with that untreated LiMn2O4-based cathode. Transmission electron microscopy (TEM), scanning (SEM), energy-dispersive X-ray analysis (EDAX) confirmed formation a thin polymer film on particles....

Undoped as well (Co, Mn) co-doped Zinc oxides have been effectively developed on glass substrates, taking advantage of the spray pyrolysis procedure. The X-ray diffraction XRD photoelectron spectroscopy (XPS) measurements recognized a pure hexagonal wurtzite form ZnO, and no other collateral phases such MnO2 or CoO2 observed result doping. calculated values texture coefficient (TC) were between 0.15 5.14, indicating dominant orientation along (002) plane. crystallite size (D) varies with...

In the last decade, interest in use of beta gallium oxide (β-Ga2O3) as a semiconductor for high power/high temperature devices and deep-UV sensors has grown. Ga2O3 an enormous band gap 4.8 eV, which makes it well suited these applications. Compared to thin films, nanowires exhibit higher surface-to-volume ratio, increasing their sensitivity detection chemical substances light. this work, we explore simple inexpensive method growing high-density at temperatures. Gallium nanowire growth can be...

Molybdenum oxide (MoO₃) and Fe,Co-codoped MoO₃ thin films obtained by spray pyrolysis have been in-depth investigated to understand the effect of Co Fe codoping on films. The structural, morphological optical properties studied using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission (TEM) energy-dispersive analysis (EDAX), photoluminescence (PL) spectroscopy, electropyroelectric methods. XRD patterns demonstrated formation orthorhombic α-MoO₃ pyrolysis. SEM...

Magnesium oxide (MgO) thin films with different magnesium concentrations ([Mg2+] = 0.05, 0.1, 0.15 and 0.2 mol·L-1) in a spray solution have been successfully grown using pyrolysis technique. X-ray diffraction (XRD), Maud software, FTIR spectroscopy, confocal microscope, Wien2k spectrophotometry Photoluminescence spectrometer were used to investigate the structural, morphological optical properties. XRD analysis revealed better crystalline quality of MgO layer synthesized [Mg2+] mol·L-1,...

We report a novel route for fabricating Au−Te nanocables. Using nanoporous polycarbonate tract-etching (PCTE) membrane as the template, Au nanotubes were fabricated by electroless deposition inside nanopores of PCTE membrane. nanotube second Te was deposited on surfaces slow electrochemical deposition, taking advantage underpotential (UPD). The rate sufficiently to radially grow coaxially within form

We investigated the effect of silver catalysts to enhance growth Ga2O3 nanowires. The nanowires on a P+-Si (100) substrate was demonstrated by using thermal oxidation technique at high temperatures (~1000 °C) in presence thin film that serves as catalyst layer. present results morphological, compositional, and electrical characterization nanowires, including measurements photoconductance transient time. Our show highly oriented, dense long can be grown directly surface silicon. with their...

Surface chemistry of the capacity fading LixMn2O4 cathode was investigated using atomic force microscopy (AFM), energy-dispersive X-ray analysis (EDAX), and photoelectron spectroscopy (XPS). Measurements show a decrease in from 124 mA h g-1 before storage to 102 after an electrolyte 1 M LiPF6/EC + DMC DEC at 70 °C for 5 days. morphological changes were monitored contact tapping AFM lateral air. Nanoscale charged observed. Before storage, homogeneous grains approximately 100−200 nm are seen....