A5011343388- Plasma Applications and Diagnostics
- Plasma Diagnostics and Applications
- Ammonia Synthesis and Nitrogen Reduction
- Surface Modification and Superhydrophobicity
- Catalytic Processes in Materials Science
- Advanced Sensor and Energy Harvesting Materials
- Advanced Data Storage Technologies
- Aerosol Filtration and Electrostatic Precipitation
- Graphene and Nanomaterials Applications
- Copper Interconnects and Reliability
- Metal and Thin Film Mechanics
- Diamond and Carbon-based Materials Research
- Hydrogen Storage and Materials
- Semiconductor materials and devices
- Vacuum and Plasma Arcs
- Atomic and Molecular Physics
- CO2 Reduction Techniques and Catalysts
- Gas Dynamics and Kinetic Theory
- Catalysts for Methane Reforming
- Electrohydrodynamics and Fluid Dynamics
- International Law and Aviation
- Seed Germination and Physiology
- Electrospun Nanofibers in Biomedical Applications
- Advanced Chemical Physics Studies
- Silicone and Siloxane Chemistry
Swiss Federal Laboratories for Materials Science and Technology
2023-2025
Universidad de Sevilla
2019-2023
Instituto de Ciencia de Materiales de Sevilla
2019-2023
Ghent University
2019
Wuhan University of Technology
2019
University of Twente
2019
Abstract Surface functionalization technologies of fibrous or porous materials are often considered relatively unstable with a shelf life several weeks months at most, evoked by heterogeneous treatment their internal surface areas. Here, it is demonstrating that the fine balance plasma etching, deposition, and oxidation involving different reactive species, strongly enhances penetration depth within complex structures. On this basis, capillary wicking maintained over >10 years after...
Current studies on ammonia synthesis by means of atmospheric pressure plasmas respond to the urgent need developing less environmentally aggressive processes than conventional Haber–Bosch catalytic reaction. Herein, we systematically study plasma and much investigated reverse reaction (decomposition into nitrogen hydrogen). Besides analyzing efficiency both in a packed-bed reactor, apply an isotope-exchange approach (using D2 instead H2) mechanisms. Isotope labeling has been rarely applied...
Plasma-catalysis has been proposed as a potential alternative for the synthesis of ammonia. Studies in this area focus on reaction mechanisms and apparent synergy existing between processes occurring plasma phase surface catalytic material. In present study, we approach problem using parallel-plate packed-bed reactor with gap electrodes filled pellets lead zirconate titanate (PZT), ferroelectric material modified coating layer alumina (i.e., Al2O3/PZT) same incorporating ruthenium...
Carbon dioxide decomposition is a challenging target to combat climate change. Nonthermal plasmas are advantageous for this purpose because they operate at ambient conditions and can be easily scaled-up. In study, we attempt the CO2 splitting into CO O2 in parallel plate packed-bed plasma reactor moderated with Lead Zirconate Titanate (PZT) as ferroelectric component, achieving conversion rates energy efficiencies higher than those obtained BaTiO3 our experimental device. The analysis of...
Plasma reactions of CO2 + CH4 mixtures have been proposed as a suitable process for the dry reforming methane. Without specific catalysts, most studies report formation CO and H2 main reaction products arise question whether CHx radicals coming from may interact with intermediate species formed by electron impact dissociation CO2, critical step high added value oxygenated compounds. We addressed this studying plasma in ferroelectric-moderated packed-bed reactor varying reactants ratio....
ABSTRACT The increasing emergence of antimicrobial resistance and the development new infective viral strains represent a constantly growing threat. Metal‐based nanomaterials have emerged as promising tools in fight against bacterial infections; however, release metal nanoparticles/ions clinical applications may cause undesired side effects (allergies, systemic toxicity), reducing their practical use treatment. Moreover, metal‐based nanoparticles possess predominantly antibacterial effects,...
Hexamethyldisiloxane (HMDSO) low-pressure plasmas are known for their versatility in the deposition of plasma polymer films (PPFs) with different properties and applications. Although they have been studied decades, reaction mechanisms formation leave open questions, particularly when on 3D materials complex geometries such as cavities undercuts is considered. In present study, two configurations named "cavity" "undercut" selected to study influence diffusion film-forming species surface...
As a new trend in plasma surface engineering, conditions that allow more-defined chemical reactions at the are being increasingly investigated. This is achieved by avoiding high energy deposition via ion bombardment during direct exposure (DPE) causing destruction, densification, and broad variety of reactions. In this work, novel approach introduced placing polymer mesh with large open area close to plasma-sheath boundary above plasma-treated sample, thus enabling near-plasma chemistry...
Dielectric barrier discharge (DBD) plasmas and plasma catalysis are becoming an alternative procedure to activate various gas phase reactions. A low-temperature normal operating pressure the main advantages of these processes, but a limited energy efficiency little selectivity control hinder their practical implementation. In this work, we propose use isotope labelling retrieve information about intermediate reactions that may intervene during DBD processes contributing decrease in...
Abstract The operational behavior of packed‐bed plasma reactors depends on the dimension, shape, and chemical properties pellets used as moderators, but little information exists about influence their specific dielectric properties. Herein, we comparatively study electrical a reactor filled with either (Al 2 O 3 glass) or ferroelectric (BaTiO lead zirconate titanate) materials. We found that current was higher for ferroelectrics presented nonlineal dependence voltage. Moreover, BaTiO ,...
Dust contamination is a frequent problem when processing materials at the nanoscale by plasma technology. Various approaches have thus been applied to protect samples, however, requiring adjust properties which also imposes limitations on process window. We therefore propose near-plasma chemical (NPC) surface engineering as way avoid dust during and after operation without altering environment simply locating polymeric mesh above samples in sheath. Because of electric potential acquired...
Plasma technology has emerged as an efficient, simple, and eco-friendly method for activating seed germination processes. Most studies on this subject have focused the morphological wetting effects surface state of seeds attributed improvement in occasionally found to induced hydrophilicity a higher water imbibition rate. Recently, involvement reactive oxygen nitrogen species process also been highlighted. In work, we study effect very low-power cold atmospheric air-plasma treatment...
Dust contamination is a frequent problem when processing materials at the nanoscale by plasma technology. Various approaches have thus been applied to protect samples, however, requiring adjust properties which also imposes limitations on process window. We therefore propose near-plasma chemical (NPC) surface engineering as way avoid dust during and after operation without altering environment simply locating polymeric mesh above samples in sheath. Because of electric potential acquired...
Hexamethyldisiloxane (HMDSO) low-pressure plasmas are known for their versatility to deposit plasma polymer films (PPFs) with different properties and applications. Although they have been studied decades, the reaction mechanisms of formation leave open questions, in particular when deposition on 3D materials complex geometries such as cavities undercuts is considered. In present study, two configurations named "cavity" "undercut" selected study influence ion bombardment, diffusion...
Plasma reactions of CO2+CH4 mixtures have been proposed as a suitable process for the dry reforming methane. Without specific catalysts, most studies report formation CO and H2 main reaction products arise question whether CHx radicals coming from CH4 intermediate species formed by electron impact dissociation CO2 actually interact under reported experimental conditions. Herein, we addressed this studying plasma in ferroelectric-moderated packed-bed reactor varying reactant ratio. Analysis...