Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 25 for “"hydrothermal method"”.
-
Characterization of nanostructures ZnO synthesized through hydrothermal method
… be derived using a variety of techniques. Using hydrothermal synthesis, ZnO nanostructures can be produced easily on a large scale due to the low temperature involved. Among the factors that influence the crystallinity of ZnO nanostructures are types of alkaline solution, the alkaline pH value …
-
Fabrication and characterization of nanostructured fluorine doped tin oxide thin film for dssc by hydrothermal method
… on top of bare FTO layer substrates using hydrothermal method. The performance of FTO thin film including conductivity and transparency depend on the surface morphology and the properties of the material. Hydrothermal method has proven to be a very good method for the fabrication of novel …
-
Development of manganese oxide based nanostructures by wet chemical methods for enhanced energy storage and photocatalytic applications
… structure were successfully fabricated via hydrothermal method. Furthermore, the photocatalytic activities of as-synthesized nanostructures were further studied by the decomposition of methyl orange and methyl blue under UV irradiation. The results indicated that the 26-facet polyhedral …
-
Palladium (pd) decorated zinc oxide (ZnO) nanoparticles for gas sensing applications: meat spoilage gases
… nanoparticles were synthesised using the hydrothermal method for the purpose of testing their gas sensing properties. After the synthesis of these nanoparticles, various characterization techniques for the investigation of both physical and chemical properties were employed. Different …
-
Nanoarchitectured Energy Storage Devices
… fabrication, are initially presented. A facile method, called Spin-on Nanoprinting (SNAP), to fabricate highly ordered manganese dioxide (MnO2) nanopillars is introduced. The SNAP method that is further modified to develop carbon nanoarray electrodes is also discussed. Subsequently, a …
-
Comparative study of nanorods and nanoflowers TiO2 thin film for heterostructure application
… the structures were chosen due to their simple method of preparation and enhance efficiency in various applications.The n- type TiO2 thin filmswere produced using a hydrothermal method with some fabrication parameters studied during the preparation of TiO2 thin films such as Titanium Butoxide …
-
Synthesis of zinc oxide nanorods: seed layer annealing effect on electrical conductivity
… growth and orientation of ZnO nanorods during hydrothermal deposition. Beside the other properties of ZnO nanorods the electron transport properties and electron conduction are very important, in successful immobilization of various biomolecules in the field of biosensing. In current study the …
-
Metal phosphates: From syntheses and structures to applications in sorption, catalysis and teeth erosion protection
As a synthetic route a hydrothermal procedure with organic amines as templates. The electronic aspects were investigated in collaboration by using Moessbauer spectroscopy. The synthesized new compounds were structurally analyzed by single crystal X-ray diffraction. The thermal properties and …
-
The fabrication of TiO2 nanostructures on porous silicon for thermoelectric application
… versatility. In this project, a novel and facile method of low temperature hydrothermal method was implemented for the growth of TiO2 nanostructures on porous silicon by using Titanium (IV) Butoxide (TBOT) and Hydrochloric acid (HCL) electrolytes. As a substrate, porous silicon samples were …
-
Synthesis and Characterization of Ferroelectric Nanomaterials
… and ceramics were prepared using solvothermal, hydrothermal and citrate-gel methods. The ferroelectric properties of the prepared cosubstituted Bi4Ti3O12 ceramics were studied using P–E hysteresis loop, leakage, and polarization fatigue measurements. A two-phase solvothermal synthesis approach …
-
Bismuth Oxyhalide Nanosheets with Adjustable Band Edge Potentials for Photocatalytic Ammonia Generation
… BiOI nanosheets by a surfactant-assisted hydrothermal method. Unlike bulk BiOI, ultrathin nanosheets were active for water splitting and nitrogen reduction. It is shown that functional groups (polyvinyl pyrrolidone) on the surface of BiOI induced an electric dipole and upshifted the band …
-
Produção de hidrocarbonetos renováveis a partir da pirólise do óleo de macaúba (acrocomia aculeata) utilizando AlSBA-15, Mo/AlSBA-15, HBeta e Mo/HBeta
… The AlSBA-15 catalyst was synthesized by the hydrothermal method and the commercial zeolite HBeta activated by calcination. The materials were characterized by X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Fluorescence (FRX) and Scanning Electron Microscopy …
-
Fabrication and Characterization of ZnO/CuO Core-Shell Nanowire Arrays
… ZnO nanowire arrays were first grown by the hydrothermal method using ZnO seeded substrates. Copper then was deposited on as-grown ZnO nanowire arrays by a DC sputtering method. Thermal oxidation of copper nanofilm was utilized to enable the formation of ZnO/CuO core-shell nanowire arrays. …
-
THERMOELECTRIC ENERGY HARVESTING IN DISPLAYS
… nanowires have been fabricated through the hydrothermal method on inkjet-printed patterns of zinc acetate dihydrate. It has been demonstrated that with the right inkjet-printing parameters and substrate temperature, ${ZnO}$ nanowires can be effortlessly fabricated in accordance with the …
-
Copper Oxide Nano Photocatalyst for Wastewater Purification using Visible Light
… of 300-600 nm were synthesized using a simple hydrothermal method. The rhombic dodecahedral Cu2O nano crystals are highly active when driven by low-power white LEDs as a light source. In comparison with other reported photocatalysts, the Cu2O nano crystals in this work show a much higher …
-
Development of Advanced Nanomaterials for Potential Lithium-Ion Battery Application
… (XANES) spectroscopy, and electrochemical methods, have been applied to analyze the prepared nanomaterials, understand their growth mechanisms, and evaluate their battery performance. The nanostructured electrode materials included nitrogen-doped carbon nanotubes (NCNTs), …
-
Fundamental magnetic properties of Greigite (Fe3S4)
… greigite samples were produced using a new hydrothermal method. Sample purity has been confirmed by X-ray diffraction, neutron diffraction, Mössbauer spectroscopy and elemental analyses. Based on this suite of highly pure synthetic greigite samples, as well as a range of natural greigite …
-
Implementing Solvothermally Synthesized Carbon Nanodots into Dye-Sensitized Solar Cells to Enhance External Quantum Efficiency in the Ultraviolet
… real-space imaging of CNDs, derived from a fully hydrothermal reflux carbohydrate conversion of D-glucose, both before and after filtration via 20kDa molecular weight cutoff (MWCO) dialysis in water. Synthesis of these CNDs, from the bottom-up hydrothermal method, follows a complex carbohydrate …
-
Rational Catalyst Design for Direct Conversion of CH4 and CO2
… would activate carbon dioxide, were prepared by hydrothermal method. Conventional incipient wetness and modified polyol method were also used for the preparation of supported round shape Pt samples, for the comparison. Catalyst activity was evaluated by studying the H2 evolution rates during the …
-
Structural characterisation of apatite-like materials
… of apatite samples produced by three different methods: chemical precipitation method, hydrothermal method, and bacterial biosynthesis. A general observation was that all samples contained a certain amount of CO\(_3\)\(^{2-}\), HPO\(_{4}\)\(^{2-}\), and in some cases residual nitrates depending …
Page 1 of 2