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SUMMARY:Artificial Photosynthesis - Development Challenges
DTSTART:20181025T103000
DTEND:20181025T113000
DTSTAMP:20260407T020801Z
UID:1e7adb0e71c603a5ea2ec33dfdf40c7809494c56a09c93a5e374ef65
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Hans Joachim Lewerenz\nDivision of Engineering and Applied
  Science\nCalifornia Institute of Technology\, Pasadena\, CA\nThe present 
 approaches pursued in artificial synthesis are introduced\, encompassing w
 ater photolysis\, photoelectrocatalytic carbon dioxide reduction and (phot
 o)electrochemical ammonia synthesis. Photoelectrochemical water splitting 
 with monolithic devices has progressed rather far with record efficiencies
  beyond 18% solar-to-hydrogen generation1-3. These systems and their under
 lying approaches will be reviewed and the remaining challenges are address
 ed including possibilities in space applications4. Challenges relate to th
 e lifetime\, efficiency and costs product. Hence roads to stability\, incr
 eased efficiency and the use of earth abundant materials for terrestrial u
 se are described and assessed.\nPresent efforts in carbon dioxide reductio
 n are reviewed and the issue of developing highly reaction-selective elect
 rocatalysts and combining them with photo-absorbers is emphasized. In elec
 trolyte ammonia synthesis\, very recent concepts are introduced\, deduced 
 from the surface analytical understanding of the Haber-Bosch process5.\nTh
 e interrelation of empirical work and detailed mechanistic understanding t
 hat includes surface science will be addressed.\n \n1M.May\, H.J. Leweren
 z\, D. Lackner\, F. Dimroth \,T. Hannappel\, Nat. Comm. 6 (2015) 8286\n2K.
 T. Fountaine\, H.J. Lewerenz\, H.A. Atwater\, Nat. Comm. 7 (2016) 13706\n3
 W.H. Chen\, M. Richter\, M. May\, J. Ohlmann\, D. Lackner\, F. Dimroth\, H
 .A. Atwater\, T.\n  Hannappel\, H.A. Atwater\, H.J. Lewerenz\, ACS Energy
  Lett. 3 (2018) 1795\n4. K. Brinkert\, M. Richter\, O. Akay\, J. Liedtke\,
  M. Giersig\, K.T. Fountaine\, H.J. Lewerenz\, Nat.\n  Comm. 9 (2018) 25
 27\n5 G. Ertl\, Angew. Chemie 47 (2008) 3524 (Nobel Lecture)\n 
LOCATION:I17 4 K2 https://plan.epfl.ch/?room==I17%204%20K2
STATUS:CONFIRMED
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