A5004801205- Metal-Organic Frameworks: Synthesis and Applications
- Advanced Photocatalysis Techniques
- Magnetic and transport properties of perovskites and related materials
- ZnO doping and properties
- Inorganic Chemistry and Materials
- Ferroelectric and Piezoelectric Materials
- Luminescence Properties of Advanced Materials
- Advanced Thermoelectric Materials and Devices
- Covalent Organic Framework Applications
- Catalytic Processes in Materials Science
- Molecular Sensors and Ion Detection
- Advanced Sensor and Energy Harvesting Materials
- Electronic and Structural Properties of Oxides
- Polyoxometalates: Synthesis and Applications
- Nuclear materials and radiation effects
- Magnetism in coordination complexes
- Advancements in Battery Materials
- Gas Sensing Nanomaterials and Sensors
- Advanced Nanomaterials in Catalysis
- Advanced Condensed Matter Physics
- Quantum Dots Synthesis And Properties
- Thermal Expansion and Ionic Conductivity
- Radiation Detection and Scintillator Technologies
- Catalysis and Oxidation Reactions
- Crystal Structures and Properties
Shinshu University
2020-2025
Ōtani University
2025
Consejo Nacional de Investigaciones Científicas y Técnicas
2009-2021
National Technological University
2021
Institute of Scientific and Technical Research for Defense
2014-2020
Atmospheric Observatory of Austral Patagonia
2013-2016
Swiss Federal Laboratories for Materials Science and Technology
2011-2014
Centro Científico Tecnológico - Tucumán
2014
Spark Therapeutics (United States)
2013
Powder Metallurgy Institute
2013
We report on the successful functionalization of cotton fabrics with a water-stable metal–organic framework (MOF), UiO-66, under mild solvothermal conditions (80 °C) and its ability to adsorb degrade water micropollutants. The functionalized samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDX), transmission (TEM), Fourier transform infrared (FTIR), photoelectron (XPS). UiO-66 crystals grew in uniform conformal manner...
An interconnected Au nanoparticle arrangement is obtained by electrodeposition from Au(III) soluble complexes within the pore system of block-copolymer templated mesoporous titania films. The resulting Au@TiO2 nanocomposites (5 nm particles, 5.5 amorphous walls) have electrochemical behavior a gold electrode high surface area. attenuation plasmon due to -OH electroadsorption and existence mixed localized states in these are observed situ spectroelectrochemistry.
LaTiO(2)N photoanodes for solar water splitting were prepared by electrophoretic deposition and demonstrated the best photocurrents ever reported this material. Further important enhancement of performance was obtained use a sputtered In(2)O(3) overlayer.
The optical absorption of UiO-66-NH2 MOF was red-shifted using a diazo-coupling reaction. modifications performed with naphthols and aniline yielded reddish samples, the diphenylaniline dark violet ones. photocatalytic activity these modified MOFs assessed for methylene blue degradation, showing good performance relative to traditional TiO2. degradation found correlate red shift edge. These findings suggest potential applications materials in photocatalysis dye sensitized solar cells.
InfoMetricsFiguresRef. Journal of Agricultural and Food ChemistryASAPArticle This publication is free to access through this site. Learn More CiteCitationCitation abstractCitation referencesMore citation options ShareShare onFacebookX (Twitter)WeChatLinkedInRedditEmailJump toExpandCollapse ViewpointFebruary 18, 2025A Perspective on Scientific Integrity: A Reflection Methods, Mindsets, LegacyClick copy article linkArticle link copied!Eugenio H. Otal*Eugenio OtalResearch Initiative for...
Oxynitrides with the nominal composition LaTiO2N were prepared from a La2Ti2O7 precursor by thermal ammonolysis of oxide under an NH3 flow for different durations t (4 – 30 h). X-ray diffraction (XRD) indicated that phase-pure samples obtained when ≥ 13 h. The material was further characterised scanning electron microscopy (SEM), surface area measurements based on BET method, thermogravimetric analysis (TGA) and UV-visible diffuse reflectance spectroscopy (DRS). powders displayed increased...
Two series of oxide precursors for perovskite-type (La,Ca)Ti(O,N)3 were prepared by adding Ca2+ to A-site deficient LaTiO3.5 heterogeneously (Ca2+-backfilling) or substituting La3+ in stoichiometric homogeneously (Ca2+-substitution). Activity the resultant photocatalytic O2 evolution was tested presence an electron acceptor (Ag+) and a superior activity Ca2+-backfilled LaTiO2N compared Ca2+-substituted unsubstituted demonstrated. X-ray diffraction patterns precursor oxides revealed higher...
Abstract Metal–Organic frameworks (MOFs) are promising candidates for advanced photocatalytically active materials. These porous crystalline compounds have large surface areas and structural tunability thus highly competitive with oxides, the well‐established material class photocatalysis. However, due to their complex organic coordination chemistry composition, photophysical mechanisms involved in photocatalytic processes MOFs still not well understood. Employing electron paramagnetic...
Mesoporous thin films containing organic functionalities behave like selective membranes. Titania mesoporous with an accessible cubic mesostructure are deposited on a conductive electrode (see figure). Organic groups (phenyl, hexadecyl, glycerol) added to the pore surface by post-grafting. The transport properties of electrochemical probes such as ferrocyanide or ferrocenedimethanol within system depend grafted functionalities. Supporting information for this article is available WWW under...
The prolonged exposure to fluorides results in the development of several diseases, from dental fluorosis crippling deformities spine and major joints. population exposed high fluoride concentration is located developing countries where assurance water quality difficult perform. Addressing this challenge, an open-source system for determination natural was developed using equilibrium between red Fe–SCN complex colorless Fe–F. reaction develops cotton substrates reduce manipulation liquid...
The phosphor CaTiO 3 :Pr 3+ was synthesized via a solid-state reaction in combination with subsequent annealing under flowing NH .Comparatively large off-center displacements of Ti the TiO 6 octahedra were confirmed for as-synthesized by XANES.Raman spectroscopy showed that local crystal structure becomes highly symmetric when powders are ammonolyzed at 400 °C.Rietveld refinement powder X-ray diffraction data revealed samples °C have smallest lattice strain and same time largest average...
An alternative spectroscopic approach for monitoring the temperature of aqueous solutions is presented. The method based upon temperature-induced spectral changes undergone by second overtone (around 960 nm) near-infrared (NIR) water absorption band. Single and multilinear regression analysis are tested in order to evaluate predictive ability temperature. A linear dependence found when measurements performed at a single wavelength, but lower prediction error obtained models applied. No...
Here, we present knittable shape-memory polymeric fibers extruded using a 3D-printer nozzle-based melt-spinning method for high throughput of composition and condition testing. These structures are used as the basis electroactive shape-changing knitted textiles combining several types fibers, including organic fibrous heaters. represent different approach to "on-demand" can be incorporated into variety textile architectures, inlaid knitting, diagonal interlacements, knit/purl design an...
Abstract The development of portable, reliable, and low‐cost sensors for assessing the quality natural water sources is high relevance in developing countries as they can serve an intermediate solution prior to building permanent potable distribution infrastructure. These should be simple operate by non‐trained operators easy manufacture locally. Lanthanide‐based metal–organic frameworks (MOFs) offer a trustable platform due their intense emission regions visible spectra sensitivity...
Abstract We report on a detailed textural analysis of mechanochemically synthesized MOF‐199 including N 2 adsorption‐desorption and CO adsorption isotherms data at 77 K 273 (up to atmospheric pressure), respectively, CH 4 298 35 bar). used the isotherm determine micropore volume structures, establish their methane uptake capacity understand how these properties depended Ethanol/BTC ratio during synthesis. The maximum for our specimens was recorded 130 v/v bars. These results open an avenue...