A5089544414- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Magnetism in coordination complexes
- Metal complexes synthesis and properties
- Metal-Catalyzed Oxygenation Mechanisms
- Metal-Organic Frameworks: Synthesis and Applications
- Porphyrin and Phthalocyanine Chemistry
- Nitric Oxide and Endothelin Effects
- Advancements in Battery Materials
- Lanthanide and Transition Metal Complexes
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Advanced Battery Technologies Research
- Ferroelectric and Piezoelectric Materials
- Hemoglobin structure and function
- Electron Spin Resonance Studies
- Photosynthetic Processes and Mechanisms
- Electrochemical sensors and biosensors
- Quantum Dots Synthesis And Properties
- Catalytic Processes in Materials Science
- Glass properties and applications
- Layered Double Hydroxides Synthesis and Applications
- Electrochemical Analysis and Applications
- Covalent Organic Framework Applications
- Semiconductor materials and interfaces
Instituto Politécnico Nacional
2014-2024
Universidad de las Américas
2020
Benemérita Universidad Autónoma de Puebla
2005
Universidad Autónoma de Zacatecas "Francisco García Salinas"
2001
In the present work, hydrotalcite-like materials known as layered double hydroxides (LDHs) were synthesized. The Ni–Al and Ni–Fe with different Ni/Fe ratio obtained by coprecipitation method at variable pH. LDH structure was verified X-ray diffraction, Fourier transform infrared, Raman spectroscopy. No secondary extra phases observed for any material. electronic properties evaluated UV–vis spectroscopy, while magnetic ones followed electron paramagnetic resonance (EPR). results suggested...
Several materials have been studied as electrodes for aqueous batteries that use sodium alkali ion; these include Prussian blue analogue or hexacyanoferrates. The inhibition disruption on metal–metal charge transfer plays an important role improving electrochemical stability of the material. improvement is achieved when two external metals are coordinated to N ends in Na-rich Additionally, presence vacancies material another factor influences its stability. In this study,...
The molecular and crystal structure of the complex [MnL(H2O)2]Cl2·4H2O 1 (L = 2,13-dimethyl-3,6,9,12,18-pentaazabicyclo[12.3.1]octadeca-1(18),2,12,14,16-pentaene) have been determined, solid state solution electronic spectra recorded thermogravimetric analysis as well an ESR at different temperatures performed. shows that cation displays a distorted pentagonal-bipyrimidal co-ordinated geometry, with macrocycle in pentagonal plane two water molecules axial positions. From UV/VIS it can be...
Cation doping is one of the most dynamic strategies to enhance electrochemical properties cathode materials for lithium-ion batteries. Nevertheless, maximum partial substitution capacity depends on solubility each metal ion, and so formation impurities a very common consequence. Thus, correlation between performance effect frequently unknown. In this study, copper by manganese, iron or nickel in Li2CuO2 evaluated, as well modified samples lithium ion battery materials. XRD characterization...
The synthesis, structural, electronic and magnetic characterization of five dinuclear Co(II) azacryptand compounds (1-5) bridged through different ions are reported. exchange interactions, 2J values, obtained from theoretical computations show that the variation intermetallic angles distances lead to antiferromagnetic behaviours. Magneto-structural correlations a trend, where Co(II)-bridge-Co(II) closer 180° favour an increase in superexchange pathway leading higher AF interaction values.
Polycrystalline thin film CdS has been used as window material in photovoltaic solar cells. Its ideal band gap (2.45 eV), low resistivity and electron affinity made this the most engineering; However, nowadays a cadmium free with similar properties is necessary. β-In2S3 shown adequate physical to be applied on CdTe, CIGS, CIS CZTS films were grown by chemical bath deposition technique thermally treated under different conditions. Their structural, optical, morphological electrical studied,...
N-aryl maleimides can undergo a 1,4-Michael-type addition reaction with reduced glutathione (GSH), leading to decreased concentration of GSH and an increased free radicals (FRs) in cells. is critical scavenging molecule responsible for protecting cells from oxidation maintaining redox homeostasis. disturb homeostasis because they scavenge thiol-containing molecules, especially GSH. This study aimed at measuring the concentrations FRs by electronic paramagnetic resonance (EPR), brain liver...
A new crystalline polymorphic phase of tetrakis(mu2-benzoato-O,O')-bis(dimethyl sulfoxide)dicopper(II) was obtained by direct synthesis, in space group P2(1)/n. The copper coordination is a slightly distorted square pyramidal geometry with an intramolecular Cu...Cu distance 2.6494(8) angstroms. Cu-O distances the two dimer are different, giving different chemical environments for each Cu ion. crystal structure built up well-separated stacking columns oriented along b-axis, units uniformly...
Abstract Ni‐based layered double hydroxides (LDHs), or hydrotalcite‐like materials (HTs), were synthetized through co‐precipitation at constant pH (NiAl and NiMg) urea hydrolysis (NiMn) methods, they tested in the electrochemical methanol oxidation (MOR). The physicochemical properties explored by using techniques such as X‐ray diffraction, FT‐IR spectroscopy, well electron paramagnetic resonance. In addition, correlation between active site arrangements electrocatalytic activity was...
Using different spectroscopic techniques and computational calculations, we describe the structural electromagnetic relationship that causes many interesting phenomena within a novel coordination compound with mixed valence manganese (II, III IV) in its crystal powder state. The [MnII MnIII MnIV(HL)2(H2L)2(H2O)4](NO3)2(H2O) 1 was obtained Schiff base (E)-2-((2-hydroxybenzylidene)amine)-2-(hydroximethyl)propane-1,3-diol, (H4L), Mn(NO3)2.4H2O. reaction promoted by deprotonation of ligand soft...
The discoloration‐degradation of yellow 5 dye was achieved through the heterogeneous Fenton reaction using Cu‐Y catalysts. materials were prepared by an aqueous ion exchange method from NH 4 ‐Y parent zeolite. solids are characterized X‐ray diffraction, nitrogen physisorption, EPR and, 27 Al and 29 Si NMR spectroscopies. Discoloration around 100% with 60% COD removal before 90 min at 50°C next conditions: 50 mL colored solution containing ppm dye, 0.129 mmol H 2 O , catalyst mass/volume...