BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Memento EPFL//
BEGIN:VEVENT
SUMMARY:Cleaning with photons: Challenges and opportunities in photocataly
 tic water -and air purification
DTSTART:20170410T131500
DTEND:20170410T141500
DTSTAMP:20260929T050430Z
UID:3d6718127d2ca679baa173fe219b02be6def94a616d31d7ea5538f42
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Endre Horvath\, Laboratory of Nanostructures and Novel El
 ectronic Materials EPFL\nThe discovery of photocatalytic water splitting a
 nd photocatalysis dates back to the 1970s. Since then\, several semiconduc
 tor nanoparticles have been found to have remarkable photocatalytic activi
 ty to eliminate health-threatening bacteria\, viruses\, worms and persiste
 nt\, bioaccumulative organic water pollutants as pharmaceuticals\, pestici
 des and endocrine disruptors. Surprisingly\, despite significant research 
 efforts\, studies have mainly remained in the stage of laboratory experime
 nts and only a limited number of products using this technology can be fou
 nd on the market. Materials and devices with sufficient efficiency\, stabi
 lity and low cost are yet to be demonstrated. Among the known semiconducto
 r photocatalysts\, titanium dioxide (TiO2) is the most popular owing to it
 s excellent chemical stability\, low toxicity and low cost.\n\nI will disc
 uss the main technical barriers impeding the commercialization of this tec
 hnology and show several strategies as potential countermeasures to improv
 e the photocatalytic efficiency of titania based solar environmental purif
 ication systems. As an example\, the first prototype of a low cost\, durab
 le and easy to operate solar-thermal water purification device will also b
 e presented\, which allows the production of bio-hazard-free drinking wate
 r from contaminated water resources.\nWe gratefully acknowledge the financ
 ial support of EPFL AIT Innovation Grant and the Zeno-Karl Schindler Found
 ation.\n \n\n	Szirmai P.\, Náfrádi B.\, Arakcheeva A.\, Szilágyi E.\, 
 Gaál R.\, Nemes N. M.\, Berdat X.\, Spina M.\, Bernard L.\, Jaćimović J
 .\, Magrez A.\, Forró L.\, Horváth E.\n\nCyan titania nanowires: spectro
 scopic study of the origin of the self-doping enhanced photocatalytic acti
 vity\nIn press in Catalysis Today\, doi.org/10.1016/j.cattod.2016.10.024\n
  \n\n	Spina M.\, Bonvin E.\, Sienkiewicz A.\, Nafradi B.\, Forró L.\, Ho
 rváth E.\n\nControlled growth of CH3NH3PbI3 nanowires in arrays of open n
 anofluidic channels\n(2016) Scientific reports\, 6\n \n\n	Hodos M.\, Horv
 áth E.\, Haspel H.\, Kukovecz A.\, Kónya Z.\, Kiricsi I.\n\nPhotosensiti
 zation of ion-exchangeable titanate nanotubes by CdS nanoparticles\n(2004)
  Chemical Physics Letters\, 399 (4-6)\, pp. 512-515.\n\nBio: Endre Horvát
 h has received his Master’s Degree in Environmental Sciences from the Un
 iversity of Szeged (Hungary) in 2005. He has earned his doctorate in Chemi
 stry at the same university in 2009\, where he conducted research on nanof
 iber reinforced composites. After his PhD\, he joined the group of Prof. L
 ászló Forró at École Polytechnique Fédérale de Lausanne as a postdoc
 toral Research Fellow. His research interests include development of multi
 functional nanomaterials with potential applications in the fields of phot
 ocatalytic nanomaterial-based solar-thermal water and air purification sys
 tems\, waste-water or biomass powered photocatalytic fuel cells\, sensors\
 , next generation photovoltaics\, thermoelectric materials and materials f
 or information technology. He has received the Zeno Karl Schindler Award i
 n 2015.\n 
LOCATION:MXF 1 https://plan.epfl.ch/?room==MXF%201
STATUS:CONFIRMED
END:VEVENT
END:VCALENDAR