Katerina Vrettos

ORCID: 0000-0003-2110-8224
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About
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Research Areas
  • Graphene research and applications
  • Supercapacitor Materials and Fabrication
  • Advancements in Battery Materials
  • Additive Manufacturing and 3D Printing Technologies
  • Advanced Battery Materials and Technologies
  • Aerogels and thermal insulation
  • Photopolymerization techniques and applications
  • Silicone and Siloxane Chemistry
  • Advanced Sensor and Energy Harvesting Materials
  • Laser-Ablation Synthesis of Nanoparticles
  • Carbon Nanotubes in Composites
  • Graphene and Nanomaterials Applications
  • Diamond and Carbon-based Materials Research
  • Spacecraft Design and Technology
  • Nanomaterials and Printing Technologies
  • Fiber-reinforced polymer composites

University of Patras
2015-2023

Aliphatic or aromatic diamines undergo nucleophilic attack on the epoxy groups of graphene oxide under hydrothermal conditions resulting in partial functionalization and reduction graphenic surface. The overall reaction decreases solubility yields a hydrogel that can be dried to 3D porous structure classified as an aerogel. This article compares aerogels derived from different aliphatic diamines.

10.3389/fmats.2018.00020 article EN cc-by Frontiers in Materials 2018-04-10

In this article, a facile way for the doping of graphene and derivatives with silver nanoparticles at different Ag ratios is described. were formed directly on surface two substrates dispersed in dimethylformamide by reduction cations NaBH4. A few layered nanosheets (FLG) produced from graphite reduced oxide functionalized amino arylsulfonates (f-rGO) used as substrates. The final graphene/Ag nanoparticle hybrid form solid, dense spots showed enhanced electrical conductivity, which can be...

10.3390/app13137600 article EN cc-by Applied Sciences 2023-06-27

Graphene aerogel (GA) is a lightweight, porous, environmentally friendly, 3D structured material with interesting properties, such as electrical conductivity, high surface area, and chemical stability, which make it powerful tool in energy storage, sensing, catalyst support, or environmental applications. However, the poor mechanical stability that often characterizes graphene aerogels serious obstacle for their use Therefore, we report here successful reinforcement of GA carbon fibers (CFs)...

10.3390/molecules25061295 article EN cc-by Molecules 2020-03-12

The preparation of highly dispersible disk like graphene nanoflakes with uniform size and thickness is presented.

10.1039/c5nr04422g article EN Nanoscale 2015-01-01

Abstract Carbon paper‐supported graphene aerogels are examined as anode electrodes for lithium‐ion batteries, employing a hydrothermal process and freeze‐drying step. Triethylenetetramine (TETA) o ‐phenylenediamine (OPD) prove to promote aerogel formation its chemical bonding onto the surface of carbon paper. The electrochemical results demonstrate that electrode treated with former diamine has remarkable rate capability higher capacities compared latter better stability.

10.1002/slct.201904375 article EN ChemistrySelect 2020-03-03

In this work, UV-curable resin poly (ethylene glycol) diacrylate (PEGDA) was reinforced with three different types of nanofillers: pristine graphene (G), multiwalled carbon nanotubes (MWNTs), and a hybrid MWNTs 70/30 in mass ratio (Hyb). PEGDA mixed homogenously the nanofiller oligomer by shear mixing then photopolymerized, affording thin, stable films. The thermomechanical properties afforded nanocomposites indicated superior reinforcing ability compared an intermediate behavior hybrid.

10.3390/molecules27206996 article EN cc-by Molecules 2022-10-18
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