A5036330621- Chemical Thermodynamics and Molecular Structure
- Thermal and Kinetic Analysis
- thermodynamics and calorimetric analyses
- Hydrogels: synthesis, properties, applications
- biodegradable polymer synthesis and properties
- Free Radicals and Antioxidants
- Adsorption and biosorption for pollutant removal
- TiO2 Photocatalysis and Solar Cells
- Adsorption, diffusion, and thermodynamic properties of materials
- Conducting polymers and applications
- Advanced Sensor and Energy Harvesting Materials
- Analytical chemistry methods development
- Advanced Cellulose Research Studies
- Phase Equilibria and Thermodynamics
- Advanced Photocatalysis Techniques
- Thermodynamic properties of mixtures
- CO2 Reduction Techniques and Catalysts
- Electrospun Nanofibers in Biomedical Applications
- Groundwater and Isotope Geochemistry
- Carbon Dioxide Capture Technologies
- Multiferroics and related materials
- Agroforestry and silvopastoral systems
- Ocular Surface and Contact Lens
- Polymer Nanocomposites and Properties
- Microplastics and Plastic Pollution
Universidad de Guadalajara
2011-2025
Instituto Politécnico Nacional
2000-2005
The demand to alleviate climate change produced by greenhouse gases, such as CO2, is a fact at present. use of porous adsorbents Prussian blue analogues (PBAs) possessing fast removal velocities and improved uptake capacity properties has shown promise an alternative in the solution this problem. In work, structural characterization CO2 adsorption data potassium cobalt hexacyanoferrate (CoHCFM11) are presented. FTIR demonstrates presence mixture two chains, Fe3+-CN-Co2+ Fe2+-CN-Co3+, during...
This study focuses on the thermal and energetic properties of three arylimine derivatives synthesized from 3,4-dimethoxyaniline. Melting points fusion enthalpies were assessed through differential scanning calorimetry, while combustion energies determined using a static bomb semimicro calorimeter. Thermogravimetric analysis was employed to evaluate sublimation enthalpies, enabling calculation standard molar formation (p° = 0.1 MPa) at T 298.15 K for both crystalline gaseous phases....
Water quality of Mexican tropical lake Chapala was assessed through multivariate statistical techniques, cluster analysis (CA) and principal component (PCA) at ten different monitoring sites for physicochemical variables six metals. This study evaluated interpreted complex water data sets apportioned pollution sources to get better information about quality. From descriptive statistics results, the highest concentrations metals occurred during dry season, this trend explained by fact that an...
Hydrogels are polymers of great importance due to their multiple applications, which have led an exponential increase in production. However, once they fulfilled function, become waste and ecotoxicological effects unknown. The aim the present study was evaluate acute toxicity total antioxidant capacity earthworm (Eisenia fetida) exposed a terpolymeric hydrogel (acrylic acid, acrylamide, 2-acrylamido-2-methyl-1-propane-sulfonic acid) crosslinked with modified kraft lignin. Four different...
The discharges enriched with heavy metals, particularly Cr(VI), are a serious environmental problem. In this work, it is presented the use of biosorbents from eggshells membranes ostrich, quail, duck and chicken; were easily prepared studied for removal Cr(VI) aqueous solutions. Maximum uptake 1.41 mmol g −1 membrane permitted identification ostrich as material highest uptake. N 2 adsorption experiments to classify mesoporous materials, since they had pore size 14.8 nm. This represented an...
ABSTRACT Poly(acrylic acid‐ co ‐acrylamide) hydrogels were prepared via free‐radical solution polymerization, crosslinked with ethylene‐glycol‐dimethacrylate, potassium persulfate/ammonium bisulfite as the initiator, and applied in removal of Cu(II) ions from aqueous solutions. Molar ratios acrylamide/acrylic acid moieties amount crosslinking agent varied to determine swelling capacities maximum metal uptake. Polymerization kinetics was investigated by 1 H‐NMR. Hydrogel physicochemical...
A hydroponic trial was conducted to study the effect of chloride salinity in simulated effluent on Cd accumulation by tobacco.Leaf surface area (LSA) and root (RSA) measurements were incorporated as possible determinants uptake rate plants.Results showed that individual plant differences content normalized when including RSA express rates plants but not LSA.A biotic ligand model (BLM) fitted predict uptake, estimated active almost linear free 2+ ion tobacco plants, while virtually no changes...
Developing nanomaterials with the capacity to restrict growth of bacteria and fungus is current interest. In this study, nanocomposites poly(2-hydroxyethyl methacrylate) (PHEMA) carbon nanotubes (CNTs) functionalized primary amine, hydroxyl, carboxyl groups were prepared characterized. An analysis by Fourier-transform infrared (FT-IR) spectroscopy showed that PHEMA chains grafted CNTs. X-ray photoelectron suggested grafting reaction was viable. The morphology studied field-emission scanning...
Abstract In this work we propose a new crosslinking agent and the method to use it for synthesis of acrylate based hydrogels. The diacrylate glycerol, synthesized in our laboratory, allows generation materials with well defined micro‐structures dry state, unique meso‐ macro‐structures during swelling, enhanced mechanical properties swelling capacity water. These depend on concentration, as thermal history. Poly(acrylamide‐ co ‐acrylic acid) hydrogels are commonly crosslinked N ,...
The enthalpy of formation can be determined indirectly with different calorimetric techniques; one the most used is combustion calorimetry. During a process, there are multiple energy variables that significantly influence overall result measurement. One these exchange exists between calorimeter and surroundings. To reduce this contribution obtain more precise measurements energies compounds containing elements C, H, O N, in isoperibolic operation was designed, constructed calibrated. made...
The obtainment of suitable values for metabolizable energy requires the previous knowledge accurate and precise heat combustion different macronutrients. Thus, in this work, heats six carbohydrates (glucose, fructose, sucrose, maltose, starch, cellulose) were experimentally measured, such statistically compared with equivalent bibliographic collected a parallel work (Heats main vegetable foods: approach, 2019), proposing, each carbohydrate, an "overall interval" actualized representative...
In this paper, we present the synthesis of composite materials comprised α-cellulose and sugarcane bagasse cellulose fibers grafted with lactic acid ε-caprolactone. These were incorporated as reinforcements into a PLA matrix by extrusion, producing improved mechanical properties. The grafting ε-caprolactone onto was confirmed FTIR spectroscopy, demonstrating chemical modification fibers. morphology composites analyzed through scanning electron microscopy (SEM), showing that are encapsulated...