A5080318294- Electrocatalysts for Energy Conversion
- Diamond and Carbon-based Materials Research
- Nanoparticles: synthesis and applications
- Metal and Thin Film Mechanics
- Advanced Materials Characterization Techniques
- Electronic and Structural Properties of Oxides
- Fuel Cells and Related Materials
- TiO2 Photocatalysis and Solar Cells
- Semiconductor materials and devices
- Electrochemical Analysis and Applications
- Quantum Dots Synthesis And Properties
- Electrodeposition and Electroless Coatings
- MXene and MAX Phase Materials
- Catalytic Processes in Materials Science
- Laser-Ablation Synthesis of Nanoparticles
- Advanced battery technologies research
- 2D Materials and Applications
- Silicon Nanostructures and Photoluminescence
- Nanocluster Synthesis and Applications
- Advanced Photocatalysis Techniques
- Semiconductor materials and interfaces
- Nanotechnology research and applications
- Ga2O3 and related materials
- Gas Sensing Nanomaterials and Sensors
- Space Exploration and Technology
The University of Texas at Dallas
2019-2025
The University of Texas at San Antonio
2014-2020
University of Connecticut
2012-2014
Universidad Nacional Autónoma de México
2008-2014
Abstract Reduction of water to hydrogen through electrocatalysis holds great promise for clean energy, but its large-scale application relies on the development inexpensive and efficient catalysts replace precious platinum catalysts. Here we report an electrocatalyst generation based very small amounts cobalt dispersed as individual atoms nitrogen-doped graphene. This catalyst is robust highly active in aqueous media with low overpotentials (30 mV). A variety analytical techniques...
A MoS2(1-x)Px solid solution (x = 0 to 1) is formed by thermally annealing mixtures of MoS2 and red phosphorus. The effective stable electrocatalyst for hydrogen evolution in acidic holds promise replacing scarce expensive platinum that used present catalyst systems. high performance originates from the increased surface area roughness solution. As a service our authors readers, this journal provides supporting information supplied authors. Such materials are peer reviewed may be...
Candida albicans is the most common pathogenic fungus isolated in bloodstream infections hospitalized patients, and candidiasis represents fourth infection United States hospitals, mostly due to increasing numbers of immune- medically-compromised patients. C. has ability form biofilms morphogenetic conversions between yeast hyphal morphologies contribute biofilm development represent an essential virulence factor. Moreover, these attached communities cells are surrounded by a protective...
Abstract Abnormal accumulation of brain metals is a key feature Alzheimer’s disease (AD). Formation amyloid-β plaque cores (APC) related to interactions with biometals, especially Fe, Cu and Zn, but their particular structural associations roles remain unclear. Using an integrative set advanced transmission electron microscopy (TEM) techniques, including spherical aberration-corrected scanning (Cs-STEM), nano-beam diffraction, holography analytical spectroscopy techniques (EDX EELS), we...
Oxygen evolution reaction (OER) electrocatalysts with high activity, stability, and low costs are needed for proton-exchange membrane (PEM) electrolyzers. Based on the cost limited supply of iridium, approaches that result in iridium-based OER catalysts increased catalytic activity significant interest. We report a carbon-free, self-supported hydrous iridium–nickel oxide two-dimensional nanoframe structure synthesized by thermal treatment iridium-decorated nickel nanosheets under reducing...
Designing biodegradable scaffolds with bone-compatible mechanical properties has been a significant challenge in the field of bone tissue engineering and regenerative engineering. The objective this work is to improve polymeric scaffold's strength by compositing it mechanically superior carbon nanotubes. Poly(lactide-co-glycolide) (PLGA) microsphere exhibit range human cancellous bone. On other hand, nanotubes have outstanding properties. aim study further PLGA such that they may be...
Silver nanoparticles offer a possible means of fighting antibacterial resistance. Most their properties are attributed to silver ions. In the present work, we study actions positively charged against both methicillin-sensitive Staphylococcus aureus and methicillin-resistant . We use aberration-corrected transmission electron microscopy examine bactericidal effects ultrastructural changes in bacteria that induced by nanoparticles. The revealed our 1 nm average size thinning permeabilization...
Bismuth compounds are known for their activity against multiple microorganisms; yet, the antibiotic properties of bismuth nanoparticles (BiNPs) remain poorly explored. The objective this work is to further research BiNPs nanomedicine-related applications. Stable Polyvinylpyrrolidone (PVP)-coated were produced by a chemical reduction process, in less than 30 min.We stable, small, spheroid PVP-coated with crystalline organization. PVP-BiNPs showed potent antibacterial pathogenic bacterium...
Introduction: Insertion of N atoms at a nanoscale subsurface depth in single-crystal diamond (SCD) may enable new generations quantum electronics devices. In this sense, it is critical to understand the interaction between implanted and C lattice. Methods: The investigation with SCD atomic scale using X-ray photoelectron spectroscopy (XPS) analysis involves situ bombardment surface relatively low-energy (5,000 eV) N2 ions. XPS analyses highly oriented pyrolytic graphite (HOPG) before after...
The ability to produce nanoparticles free of any surface contamination is very challenging especially for bio-medical applications. Using a pulsed nanosecond Nd-YAG laser, pure selenium have been synthesized by irradiating powder (99.999%) immerged in de-ionized water and ethanol. wavelength the laser beam has varied from UV NIR (355, 532 1064 nm) its effect on particle size distribution studied dynamic light scattering (DLS) transmission electronic microscopy (TEM), revealing then...
Catalysts are required for both the oxidation of water and reduction oxygen. Blended oxides Ir Ru superior whereas mixtures Pt perform better when oxygen on same electrode. A strategy rationing these elements is explored by formation a thin film using dry, flame process. IrxPt1-xO2-y IrxRu1-xO2-y were deposited from vapor phase, as films, onto substrates glassy carbon, polypropylene, quartz. Elemental analysis Ir-Pt electrode suggests stoichiometry Ir0.56Pt0.44O2-y. Bulk diffraction shows...
Silver nanoparticles (AgNPs) can be difficult or expensive to obtain synthesize for laboratories in resource-limited facilities. The purpose of this work was optimize a synthesis method fast, facile, and cost-effective AgNPs with antimicrobial activity, which readily implemented non-specialized facilities laboratories. optimized uses rather simple rapid chemical reduction process that involves the addition polyvinylpyrrolidone solution warmed silver nitrate under constant vigorous stirring,...
Electrochemical oxygen reduction reaction (ORR) catalysts that have both high activities and long-term stabilities are needed for proton-exchange membrane fuel cells (PEMFCs) metal–air batteries. Two-dimensional (2D) materials based on graphene shown catalytic activities, however, carbon-based result in significant catalyst degradation due to carbon oxidation occurs at electrochemical potentials. Here, we introduce the synthesis performance of metallic 2D nanoframes which represent a new...
Abstract This study investigates the performance of thin film Ga 2 O 3 ‐based fin field‐effect transistors (FinFETs) built on patterned silicon substrates. The is deposited using trimethylgallium (TMGa) ALD processes. Three devices are fabricated: one utilizing as‐deposited materials, another subjected to post‐deposition annealing at 450°C, and a third annealed 900°C. electrical, optical, material properties films transistor evaluated range complementary characterization techniques, whilst...
Methyl parathion (MP) is one of the most neurotoxic pesticides. An inexpensive and reliable one-step degradation method MP was achieved through an aqueous suspension copper(I) oxide nanoparticles (NPs). Three different NPs sizes (16, 29 45 nm), determined with X-ray diffraction (XRD) high-resolution transmission electron microscopy (HRTEM), were synthesized using a modified Benedict’s reagent. 1 H nuclear magnetic resonance (NMR) results show that hydrolytic leads to formation 4-nitrophenol...