A5078976417- ZnO doping and properties
- Gas Sensing Nanomaterials and Sensors
- Advanced Thermoelectric Materials and Devices
- Chalcogenide Semiconductor Thin Films
- Advanced Photocatalysis Techniques
- TiO2 Photocatalysis and Solar Cells
- Catalytic Processes in Materials Science
- Ga2O3 and related materials
- nanoparticles nucleation surface interactions
- Electronic and Structural Properties of Oxides
- Amphibian and Reptile Biology
- Membrane Separation Technologies
- Transition Metal Oxide Nanomaterials
- Materials Engineering and Processing
- Covalent Organic Framework Applications
- Animal Behavior and Reproduction
- Material Properties and Applications
- Copper-based nanomaterials and applications
- Additive Manufacturing and 3D Printing Technologies
- X-ray Diffraction in Crystallography
- Species Distribution and Climate Change
University of Minho
2018-2023
Emerging pollutants are an essential class of recalcitrant contaminants that not eliminated from water after conventional treatment. Here, a photocatalytic microporous membrane based on polyvinylidene difluoride-co-trifluoroethylene (PVDF−TrFE) with immobilised TiO2 nanoparticles, prepared by solvent casting, was tested against representative emerging pollutants. The structure and composition these polymeric membranes were characterized scanning electron microscopy, energy dispersive X-ray...
Thermoelectric transparent ZnO:Sb thin films were deposited by magnetron sputtering, with Sb content varying between 2 and 14 at%. As evidenced X-ray diffraction analysis, the crystallize in ZnO wurtzite structure for lower levels of Sb-doping, developing a degree amorphization higher Sb-doping. Temperature-dependent (10–300 K) absorption spectroscopy studies produced performed at Zn K-edges to shed light on influence doping local atomic disorder films. The analysis K-edge EXAFS spectra...
Bi2O3 nanocone films functionalized with an overlayer of TiO2 were deposited by d.c. reactive magnetron sputtering. The aforementioned structures formed via a vapour-liquid-solid (VLS) growth, starting from catalytic bismuth seed layer. resultant nanocones exhibit improved surface area, measured atomic force microscopy, when compared to non-VLS deposition the same metal oxide. X-ray diffraction texture analysis enabled determination crystallographic β-phase Bi2O3. A very thin (6 nm thick),...
This study focuses on understanding the influence of low Sb doping ZnO’s electrical, optical, and thermoelectrical properties, while also studying its structural morphological parameters. For this, several ZnO films with varying target current densities, in range 0–0.27 mA/cm2, were produced by DC magnetron sputtering a confocal geometry. As result, thin ZnO:Sb an average transparency visible region greater than 80% are obtained, revealing for optimized conditions absolute Seebeck...
The dissipation of heat generation has been one the largest obstacles in design semiconductor devices and reducing thermal conductivity is vital for improving thermoelectric efficiency. This work focuses on Bi doping effect ZnO, ZnO:Al thin films produced by magnetron sputtering with thickness varying between 500 900 nm. approach introduces ions, a higher mass element, into ZnO metal-oxide matrix, to hinder phonon-mediated conduction and, consequently, reduce conductivity. Atom probe...
Nanomaterials can be game-changers in the arena of sustainable energy production because they may enable highly efficient thermoelectric conversion and harvesting. For this purpose, doped thin film oxides have been proven to promising systems for achieving high performances. In work, design, realization, experimental investigation properties exhibited by a set five Al:ZnO films with thicknesses 300 nm Al doping levels ranging from 2 8 at.% are described. Using multi-technique approach, main...
Thermoelectric transparent ZnO:Sb thin films were deposited by magnetron sputtering, with Sb content varying between 2-14 at.%. As evidenced from X-ray diffraction analysis, the crystallize in ZnO wurtzite structure for lower levels of Sb-doping, developing a degree amorphization higher Sb-doping. Temperature-dependent (10-300 K) absorption spectroscopy studies produced performed at Zn and K-edges to shed light on influence doping local atomic disorder films. The analysis K-edge EXAFS...