Simeon Agathopoulos

ORCID: 0000-0002-8112-7673
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About
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Research Areas
  • Bone Tissue Engineering Materials
  • Luminescence Properties of Advanced Materials
  • Advanced ceramic materials synthesis
  • Dental Implant Techniques and Outcomes
  • Dental materials and restorations
  • Glass properties and applications
  • Advanced Photocatalysis Techniques
  • Additive Manufacturing and 3D Printing Technologies
  • Nuclear materials and radiation effects
  • Recycling and utilization of industrial and municipal waste in materials production
  • Perovskite Materials and Applications
  • Membrane Separation Technologies
  • Ammonia Synthesis and Nitrogen Reduction
  • Surface Modification and Superhydrophobicity
  • Microwave Dielectric Ceramics Synthesis
  • Radiation Detection and Scintillator Technologies
  • Calcium Carbonate Crystallization and Inhibition
  • Electrocatalysts for Energy Conversion
  • Orthopaedic implants and arthroplasty
  • Ferroelectric and Piezoelectric Materials
  • Aluminum Alloys Composites Properties
  • Advanced materials and composites
  • Electrospun Nanofibers in Biomedical Applications
  • Solar-Powered Water Purification Methods
  • Inorganic Chemistry and Materials

University of Ioannina
2016-2025

Nanjing University of Aeronautics and Astronautics
2021

Smith College
2019

Syracuse University
2019

University of Memphis
2019

Texas A&M University
2019

John Wiley & Sons (United States)
2019

American Ceramic Society
2005-2011

University of Aveiro
2002-2010

Ionian University
2009

Pure BaMgSiO4:Eu2+ phosphor, prepared by a solid state reaction method under N2 atmosphere, exhibited strong green emission at 500 nm and weak 405 nm. Heat treatment NH3 atmosphere causes changes in the PL intensity: gradually decreases completely disappears after heat for 3 h, whereas new blue peak, centered 445 nm, appears becomes very strong. The results of analyses with electron paramagnetic resonance (EPR), X-ray photoelectron spectroscopy (XPS), absorption fine structure (XAFS) suggest...

10.1021/ic502568s article EN Inorganic Chemistry 2015-02-02

Self-cleaning materials have attracted immense commercial and academic interests in recent years. A major challenge is the scalable cost-effective fabrication of three-dimensional bulk with remarkable self-cleaning a desirable combination tailored porosity, robust superhydrophobicity, excellent mechanical strength, heat insulation, sound absorption ability. Here, concrete was achieved one step through liquid template pore formation situ hydrophobic modification. The exhibited...

10.1021/acsami.9b14929 article EN ACS Applied Materials & Interfaces 2019-10-28

High desalination performance, dye retention, and antibacterial properties were achieved with a multifunctional thin-film nanocomposite (MTFN) membrane, fabricated by the incorporation of novel structure reduced graphene oxide@TiO2@Ag (rGO@TiO2@Ag) into polyamide active layer. The specific characteristics graphene-based nanocomposite, synthesized microwave-assisted irradiation process, favored water channelization provided superhydrophilicity to MTFN membranes. In comparison conventional...

10.1021/acsami.9b03557 article EN ACS Applied Materials & Interfaces 2019-06-14

Abstract Metasurfaces are planar or 2D forms of metamaterials made up arrays antennas with a subwavelength thickness. They have been rapidly developed in the recent years due to their ability manipulate light–matter interaction both linear and non‐linear regimes at nanoscale. Various metasurfaces display remarkable optical features, such as acute resonance, significant near‐field enhancement, suitable capacity support electric magnetic modes, on account strong low loss. Due these important...

10.1002/adom.202200500 article EN Advanced Optical Materials 2022-06-26

Abstract Tungsten carbide (WC)-based materials are widely considered as the hydrogen evolution reaction (HER) process catalysts due to their “Pt-like” electronic structure. Nonetheless, traditional powder electrodes have a high cost, and display problems related itself poor stability over operation time. This paper presented self-supported asymmetric porous ceramic electrode with WO 3− x whiskers formed in situ on walls of finger-like holes membrane surface, which was prepared by combining...

10.1007/s40145-022-0604-4 article EN cc-by Journal of Advanced Ceramics 2022-07-18

Developing an economical, durable, and efficient electrode that performs well at high current densities is capable of satisfying large-scale electrochemical hydrogen production highly demanded. A self-supported electrocatalytic "Pt-like" WC porous with open finger-like holes produced through industrial processes, a tightly bonded nitrogen-doped WC/W (WC-N/W) heterostructure formed in situ on the grains. The obtained WC-N/W manifests excellent durability stability under multi-step density...

10.1002/advs.202106029 article EN Advanced Science 2022-03-25

Abstract Wetting experiments, by the sessile drop technique, were carried out at 37°C in air to determine surface and interfacial interactions that take place various solid bioceramics based on Al 2 O 3 , ZrO (YPZ), SiO TiO contact with water, Ringer solution, artificial synovial fluid, calf serum, human plasma, whole blood (+ EDTA). The energy of liquids was measured ring method. calculated values interaction (work adhesion) reveal intermolecular forces act across solid‐liquid interfaces....

10.1002/jbm.820290402 article EN Journal of Biomedical Materials Research 1995-04-01

The latest developments of single-phase white-light-emitting Ba 9 Lu 2 Si 6 O 24 (BLSO) silicate phosphors are presented. emerging approaches to crystal-site engineering and the energy transfer mechanisms discussed at great length.

10.1039/d1tc02952e article EN Journal of Materials Chemistry C 2021-01-01
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