A5087900403- Mine drainage and remediation techniques
- Arsenic contamination and mitigation
- Metal Extraction and Bioleaching
- Electrocatalysts for Energy Conversion
- Minerals Flotation and Separation Techniques
- Heavy metals in environment
- Electrodeposition and Electroless Coatings
- Coal and Its By-products
- Heavy Metal Exposure and Toxicity
- Environmental Justice and Health Disparities
- Advanced battery technologies research
- Fluoride Effects and Removal
- Corrosion Behavior and Inhibition
- Electrochemical Analysis and Applications
- Tailings Management and Properties
- Concrete and Cement Materials Research
- Advanced Memory and Neural Computing
- Magnesium Alloys: Properties and Applications
- Chromium effects and bioremediation
- Adsorption and biosorption for pollutant removal
- Geochemistry and Geologic Mapping
- Semiconductor materials and interfaces
- Extraction and Separation Processes
- Groundwater and Isotope Geochemistry
- Metal and Thin Film Mechanics
Universidad Juárez del Estado de Durango
2014-2025
Universidad Autónoma Metropolitana
2011
The electrocatalytic behavior of "inactive" (Boron Doped Diamond (BDD), SnO2-Sb and PbO2) anodes toward the oxygen evolution reaction (OER) is evaluated using dc ac techniques, under controlled experimental conditions (e.g. air bubbling, ohmic drop correction). Tafel slopes estimated from anodic polarization curves for all catalysts are located above 100 mV dec−1, suggesting that rate-controlling step similar these materials at determined overpotentials. In agreement with literature, it...
Nearly half of the world's urban population depends on aquifers for drinking water. These are increasingly vulnerable to pollution and overexploitation. Besides anthropogenic sources, pollutants such as arsenic (As) also geogenic their concentrations have, in some cases, been increased by groundwater pumping. Almost 40 % Mexico's relies water purposes; much semi-arid arid central northern Mexico is contaminated As. agricultural regions where irrigation primarily provided from intenstive...
The oxidative processes of pyrite (FeS2) and chalcopyrite (CuFeS2) interest for bioleaching and/or bioremediation applications are evaluated in growing medium conditions to account differences their reactions mechanisms proposed with chemical electrochemical analysis, electronic structures calculated density functional theory (DFT). Electrochemical (chronoamperometry, cyclic voltammetry), spectroscopic (Raman, XPS) microscopic techniques (SEM-EDS, AFM) used comprehensively characterize...
The anomalous behavior arising during plating of Co-Ni alloys has been extensively investigated, whence different qualitative proposals have suggested to describe it, although most them limited capture underlying atomic interactions between substrate and electroactive species. This study undertakes a approach account such phenomenon based on density functional theory (DFT) calculations supported experimental data. Alloys formed experimentally consistently present an behavior, except at the...
Mine tailing remediation aims to reduce the rate of sulfide mineral oxidation. Earlier studies showed that photosynthetic biofilms may act as a physical barrier against oxygen diffusion. Currently, long-term assay (6 months) is required evaluate solid phase redistribution Pb, Fe, Cu, and Zn originally present in historic calcareous mine samples (in our case from semiarid region North-Central Mexico). The presence provide chemical gradients conditions shift proportion associated with oxides...
In the current work cyclic voltammetry, capacitance associated to double-layer and Electrochemical Impedance studies on chalcopyrite surfaces in absence occurrence of Na-isopropyl xanthate at highly concentrated medium an extensive range polarization potentials are examined. The voltammetric response surface displays a passivating effect with addition due its adsorption, which also impedes transport oxidized species Fe2+ Cu2+ outwards mineral matrix. A large amendment interface thiocollector...
Zn-Mn alloy coatings with small amounts of Mn (Zn-0.19 wt.% Mn, Zn-0.21 Zn-0.26 and Zn-0.34 Mn) were formed by electrodeposition, onto pre-treated Mg substrates (Mgt) covered a Zn film (Zn/Mgt). The chemical composition in depth profiles, morphological structural characteristics the on Zn/Mgt (labeled as Zn-Mn/(Zn/Mgt)) analyzed using Glow Discharge Optical Emission Spectroscopy (GD-OES), Scanning Electron Microscopy/Energy Dispersive X-ray spectroscopy (SEM/EDS), diffraction (XRD). When...
Sustainable electrochemical energy generation requires cost-effective, noble-metal-free electrocatalysts for hydrogen and oxygen production in electrolyzers. This study used electrodeposition to create crystalline NiB films with different boron (B) contents—Ni-(1.17 wt% B), Ni-(1.06 Ni-(0.94 Ni-(0.89 B)—on Fluorine-doped tin oxide coated glass (FTO) substrates. These were tested as bifunctional electrocatalyst electrodes the evolution reaction (HER), (OER) alkaline media. The films’...
This convergent parallel mixed methods study aimed to determine the participation, promotion, and practices of elementary teachers who are serving indigenous learners in localizing Sustainable Development Goals (SDGs) empower grassroots nurture their potential as agents transformative change sustainable future City Bayugan, Agusan Del Sur, Philippines towards attainment development-oriented inclusive education governance. To achieve research objective, researchers concurrently collected then...
In this study, we evaluate the morphology, composition, and electrocatalytic properties of NiB films formed by electrodeposition thermally treated at 520 650 °C. The were characterized thermogravimetric analysis, scanning electron microscopy, atomic force glow discharge spectroscopy, X-ray diffraction. morphology composition affected thermal treatment, showing an increase decrease in oxygen boron concentrations respectively. This behavior is associated with decomposition Ni2B Ni3B, as well...
Oxidation of iron sulfide minerals (mainly pyrite and pyrrhotite) occurs in mine waste other mining environments which is a natural process associated to weathering reactions produced by spillage due eolic or pluvial dispersion. Iron sulfides environmental results secondary sulfur (III) oxyhydroxides (IOH’s) formation whose mineralogical transformation affects reactivity inducing passivation and/or enhanced mineral reactivity. Review reports considering IOH’s dynamic behavior are sparse...