Seminar

Seminar

[세미나 공지] - 2014년 1월 21일(화)

  • POSTED DATE : 2014-02-06
  • WRITER :
  • HIT : 2332
  • DATE : 2014-01-27
  • PLACE : 장소
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제  목 : Exceptional catalytic activities of novel QDots formed by sub-nanometric metal (0) clusters

연  사 : Prof. M.Arturo López-Quintela(University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain)

일  시 : 2014년 1월 21일(화) 오후 4시

장  소 : 화학관 세미나실 (330226호실)

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Exceptional catalytic activities of novel QDots formed by sub-nanometric
metal (0) clusters

M.Arturo López-Quintela

Laboratory of Magnetism and Nanotechnology (Nanomag), Technological Research
Institute, University of Santiago de Compostela, E-15782 Santiago de Compostela,
Spain.



Green chemistry and energy conversion are two of the main topics, which will be
preferentially addressed  in the next years  in order to resolve two main problems
of  the  current  society:  pollution  and  energy  supply.  In  both  areas  the  main
difficulties, which  have  to  be  resolved,  are  related  to  the  poor  efficiency  of  the
current  catalysts. Although  in  the past years a  lot of work has been dedicated  to
tackle such problem very little improvements were achieved. Therefore, there is an
urgent need of looking for new strategies to overcome the current difficulties.  We
have seen very recently that Au metal clusters, formed by a few number of atoms,
are  extremely  active  catalysts,  reaching  in  some  cases  enzymatic  activities  for
aerobic oxidation reactions1. At  the same  time, such clusters, although  formed by
metal elements,  they display  semiconductor-like properties, whose band gap  can
be fine tuned by changing only one atom  in the cluster, so that they could be also
essayed as photocatalysts. We have indeed observed that clusters can also be used
as  very  efficient  photocatalysts  for  water  splitting 2  and  the  destruction  of
pollutants. Therefore, the use of these few-atom compounds can open new ways to
overcome  the current difficulties  found with  the common catalysts.  In  this  talk  it
will be presented an overview of the state-of-the art of the catalytic properties of
clusters  focussing  into  the  fields  of  self-cleaning,  water  splitting  and  aerobic
oxidation.  

We want  to  acknowledge  the  financial  support  of  the MCI,  Spain  (MAT2010-20442; MAT2011-
28673-C02-01),  MINECO,  Spain  (MAT2012-36754-C02-01),  Xunta  de  Galicia  (Grupos
Ref.Comp.,GRC2013-044, FEDER Funds) and Obra Social Fundación La Caixa (2012-CL097).