Browsing by Author "Vakıfahmetoğlu, Cekdar"
Now showing items 1-5 of 5
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Gradient-hierarchic-aligned porosity SiOC ceramics
Vakıfahmetoğlu, Cekdar; Zeydanlı, Damla; de Mello Innocentini, Murilo Daniel; Ribeiro, Fernanda dos Santos; Orlandi Lasso, Paulo Renato; Soraru, Gian Domenico (Nature Publishing Group, 2017)This work describes a simple technique to produce porous ceramics with aligned porosity having very high permeability and specific surface area. SiOC-based compositions were processed from blends of three types of preceramic ... -
Hierarchical porous carbide-derived carbons for the removal of cytokines from blood plasma
Presser, Volker; Yeon, Sun-Hwa; Vakıfahmetoğlu, Cekdar; Howell, Carol A.; Sandeman, Susan R.; Colombo, Paolo; Gogotsi, Yury (Wiley-Blackwell, 2012)Carbide-derived carbons with hierarchical porosity derived from a polymer precursor can be used for the extracorporeal removal of pro- and anti-inflammatory cytokines. The removal rates scale with the surface area of pores ... -
High surface area carbonous components from emulsion derived SiOC and their gas sensing behavior
Vakıfahmetoğlu, Cekdar; Buldu, Merve; Karakuscu, Aylin; Ponzoni, Andrea; Assefa, Dawit; Soraru, Gian Domenico (Elsevier Sci Ltd, 2015)A commercially available liquid polysiloxane polymer was emulsified via stirring in the presence of water and surfactant. After curing, porous microbead/capsule thermosets were obtained. The samples kept their shape upon ... -
Polysiloxane- derived ceramics containing nanowires with catalytically active tips
Adam, Michael; Vakıfahmetoğlu, Cekdar; Colombo, Paolo; Wilhelm, Michaela; Grathwohl, Georg (Wiley-Blackwell, 2014)By direct foaming of a Pt-containing polysiloxane precursor, macroporous ceramics were generated by pyrolysis at 1400 degrees C under nitrogen or argon. The growth of nanowires was induced via a vapor-liquid-solid mechanism ... -
Zeolite decorated highly porous acicular calcium silicate ceramics
Vakıfahmetoğlu, Cekdar (Elsevier Sci Ltd, 2014)Macrocellular calcium silicate (wollastonite) ceramic foams possessing similar to 86 vol% total porosity were produced from commercial calcium silicate hydrate (xonotlite) nano-size acicular crystals and poly-methyl-methacrylate ...