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SUMMARY:Special MechE Colloquium: Colloidal chemistry for tunable electroc
 atalysts to convert CO2
DTSTART:20200507T170000
DTEND:20200507T180000
DTSTAMP:20260925T075244Z
UID:abb208cf4cdf956ebf1165f618895a9f7a456f234f084b53a55b6edf
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Raffaella Buonsanti\, Laboratory of Nanochemistry for En
 ergy\, School of Basic Sciences\, Institute of Chemical Sciences and Engin
 eering\, EPFL\nAbstract:\nCorrelating activity\, selectivity and stability
  with the structure and composition of catalysts is crucial to advancing t
 he knowledge in chemical transformations which are essential to move towar
 ds a more sustainable economy. Among these\, the electrochemical CO2 reduc
 tion reaction (CO2RR) holds the promise to close the carbon cycle by stori
 ng renewable energies into chemical feedstocks\, yet it suffers from the l
 ack of efficient\, selective and stable catalysts. Furthermore\, fundament
 al catalytic studies should be complemented with investigations under comm
 ercially-relevant conditions to assure actual progress in the field.\n\nIn
  this talk\, I will present our recent group efforts towards the synthesis
  via colloidal chemistry of atomically defined nanocrystals (NCs) and thei
 r use as CO2RR catalysts. First of all\, I will focus on our studies of NC
  nucleation and growth. A fundamental understanding of the formation mech
 anisms is crucial to rationally approach the design of new and more comple
 x catalytic materials. I will then illustrate how NCs with precisely tunab
 le shapes\, sizes and interfaces between different domains can help to ide
 ntify selectivity rules at the branching nodes which lead to C1 and C2+ re
 duction products. I will conclude by sharing our latest results which illu
 strate that the above discussed catalysts are not only model systems but c
 an be implemented in a gas-fed electrolyzer and sustain the same selectivi
 ty at technologically relevant conditions with currents up to 300 mA/cm2.\
 n\nBio:\nDr. Raffaella Buonsanti has started her position as Tenure Track 
 Assistant Professor at at the Institute of Chemical Sciences and Engineeri
 ng (ISIC) of the École Polytechnique Fédérale de Lausanne (EPFL) in Nov
 ember 2015. She received her Master Degree in Chemistry from the Universit
 y of Bari in 2006. In 2010\, she graduated in Chemistry from the Universit
 y of Salento working at the National Nanotechnology Laboratory (NNL\, in L
 ecce-Italy). She continued her research as a postdoc at the Molecular Foun
 dry\, at Lawrence Berkeley National Laboratory (LBNL). Then she became a 
 tenure-track staff scientist in JCAP (the Joint Center for Artificial Phot
 osynthesis) at LBNL where she started her own research program. At EPFL\
 , Professor Buonsanti implements a highly interdisciplinary approach\, sp
 anning from Chemistry to Materials Science and Chemical Engineering\, to a
 ddress fundamental challenges in energy technologies. Her team works at th
 e interface between materials chemistry and catalysis.
LOCATION:Zoom webinar https://epfl.zoom.us/s/93273474344
STATUS:CONFIRMED
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