A5017714334- Solar Thermal and Photovoltaic Systems
- Nanofluid Flow and Heat Transfer
- TiO2 Photocatalysis and Solar Cells
- Perovskite Materials and Applications
- Solar-Powered Water Purification Methods
- Synthesis and bioactivity of alkaloids
- Photochemistry and Electron Transfer Studies
- Advanced Photocatalysis Techniques
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Phase Change Materials Research
- Porphyrin and Phthalocyanine Chemistry
- Chalcogenide Semiconductor Thin Films
- Nuclear materials and radiation effects
- Transition Metal Oxide Nanomaterials
- Heat Transfer Mechanisms
- Solid-state spectroscopy and crystallography
- Analytical Chemistry and Chromatography
- Free Radicals and Antioxidants
- Catalytic Processes in Materials Science
- Photovoltaic System Optimization Techniques
- E-Learning and Knowledge Management
- Magnetic and transport properties of perovskites and related materials
- Surface Chemistry and Catalysis
- Molecular Junctions and Nanostructures
Universidad de Sevilla
2015-2024
Hamad bin Khalifa University
2018
Joint Research Centre
2018
American University in Cairo
2018
National Electronics and Computer Technology Center
2018
Rede de Química e Tecnologia
2017
Universidad de Cádiz
2013-2015
University of Lisbon
2013
Instituto Superior Técnico
2012
Universidade de Santiago de Compostela
2011
Studies of the organic–inorganic hybrid perovskite, CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub>, doped with Sn<sup>2+</sup>, Sr<sup>2+</sup>, Cd<sup>2+</sup>and Ca<sup>2+</sup>.
A good correlation was obtained between the electronic properties of Cu-doped anatase TiO2 by virtue both physical chemistry characterization and theoretical calculations. Pure were synthesized. The composition, structural properties, band gap energy using several techniques. method synthesis used produces TiO2, XRD, XPS Raman spectroscopy indicate that Cu atoms are incorporated in structure substitution Ti atoms, generating a distortion oxygen vacancies. In turn, synthesized samples...
This paper presents the synthesis of organic-inorganic hybrid perovskite CH3NH3Pb1-xCdxI3. The effect incorporating Cd(2+) or Pb(2+) on stability structure was analysed from a theoretical and experimental viewpoint. XRD results showed that tetragonal formed for x values up to 0.5, which seems indicate presence considerable amount is necessary stabilise structure. In turn, UV-Vis spectroscopy how led reduction in optical band gap 9% CH3NH3Pb0.5Cd0.5I3 with regard MAPbI3 Moreover, periodic-DFT...
Au nanofluids with enhanced thermal properties for use in CSP.
This is an experimental and theoretical study of thulium doped TiO2 nanoparticles. From perspective, a method was used to synthesize thulium-doped nanoparticles in which Tm3+ replaces Ti4+ the lattice, our knowledge has neither been reported nor studied theoretically so far. Different proportions anatase rutile phases were obtained at different annealing temperatures, XRD Raman spectroscopy also revealed presence pyrochlore phase (Tm2Ti2O7) 1173 K. Thus, structure Tm-doped...
Abstract This study presents the experimental and theoretical of highly internally Al‐doped TiO 2 nanoparticles. Two synthesis methods were used detailed characterization was performed. There differences in doping crystallinity, but nanoparticles synthesized with different share common features. Anatase to rutile transformation occurred at higher temperatures Al doping. X‐ray photoelectron spectroscopy showed generation oxygen vacancies, which is an interesting feature photocatalysis. In...
Methodology to prepare highly stable and improved nanofluids controlling the nanomaterial morphology.
Nano-colloidal suspensions of nanomaterials in a fluid, nanofluids, are appealing because their interesting properties related to heat transfer processes. While based on transition metal chalcogenides (TMCs) have been widely studied catalysis, sensing, and energy storage applications, there few studies nanofluids TMCs for applications. In this study, the preparation analysis 2D-WS2 typical fluid (HTF) used concentrating solar power (CSP) plants reported. Nanofluids prepared using an...
A new semiconducting compound [C 5 H 8 N 3 ] 2 [CoCl 4 (C 7 ) displays HF and LF relaxation channels, characterized by under-barrier direct processes, respectively, as revealed ab initio calculations magnetic data analysis.
The self-assembly of a neutral meso-methoxyphenylporphyrin functionalized with dipeptide glycilglycine substituent (MGG) in water and water-ethanol mixtures was studied by absorption fluorescence spectroscopy. In water, hydrophobic interactions the noncovalent intermolecular hydrogen bonding between terminal carboxylate group one porphyrin atoms pyrrolic nitrogens another originate nonspecific disorganized H- J-aggregates. addition ethanol (0.1-25% v/v) to creates small clusters within which...
Tm-doped TiO2 nanoparticles were synthesized using a water-controlled hydrolysis reaction. Analysis was performed in order to determine the influence of dopant concentration and annealing temperature on phase, crystallinity, electronic optical properties resulting material. Various characterization techniques utilized such as X-ray diffraction, Raman spectroscopy, photoelectron spectroscopy UV-vis spectroscopy. For samples annealed at 773 973 K, anatase phase obtained, predominantly...
A Project Based Learning (PBL) methodology was used in the practical laboratories of Advanced Physical Chemistry department. The project type proposed simulates "real research" focusing on sol–gel synthesis and application obtained sol as a stone consolidant. Students were divided into small groups (2 to 3 students) simulate real-world research team. This procedure allowed students explore transition from until dry gel (xerogel), analyze properties sol, gel, xerogels (especially pore volume...