Towards%20Building%20Carbon%20Neutral

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(No Transcript)
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NSF CCI (Center for Chemical Innovation) Solar
Program- Powering the Planet http//www.ccisolar.c
altech.edu/

• Goal to develop efficient, inexpensive,
  sustainable way(s) to convert solar energy into
  stored chemical fuel(s)
• Ideally to split water with sunlight using
  cheap, safe, chemically stable, easily-obtained
  earth-abundant materials yielding hydrogen as
  chemical fuel
• 3 component water splitting model

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• Water splitting model components
• membrane-supported assembly that captures
  sunlight and efficiently creates separated
  electrons and holes having sufficient chemical
  potential to drive the water-splitting reactions
• two-electron catalyst to facilitate reduction of
  water to H2 at the photocathode
• four-electron catalyst for water oxidation to O2
  at the photoanode

http//www.ccisolar.caltech.edu/webpage/95
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Harry Gray, Watson Lecture, 2/18/2009
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Harry Gray, Watson Lecture, 2/18/2009
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Carolyn Valdez, Jillian Dempsey
Harry Gray, Watson Lecture, 2/18/2009
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MIT groups progress on catalyst for
oxygen-evolving side
Tutorial Review Chem. Soc. Rev., 2009, 38, 109 -
114, DOI 10.1039/b802885k Cobaltphosphate
oxygen-evolving compound Matthew W. Kanan,
Yogesh Surendranath and Daniel G. Nocera The
utilization of solar energy on a large scale
requires efficient storage. Solar-to-fuels has
the capacity to meet large scale storage needs as
demonstrated by natural photosynthesis. This
process uses sunlight to rearrange the bonds of
water to furnish O2 and an H2-equivalent. We
present a tutorial review of our efforts to
develop an amorphous cobaltphosphate catalyst
that oxidizes water to O2. The use of
earth-abundant materials, operation in water at
neutral pH, and the formation of the catalyst in
situ captures functional elements of the oxygen
evolving complex of Photosystem II.
http//www.technologyreview.com/Energy/21155/page1
/ http//web.mit.edu/newsoffice/2008/oxygen-0731.
html

• runs on electricity from outlet
• still needs development work on photoanode
  material

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Harry Gray, Watson Lecture, 2/18/2009
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Harry Gray, Watson Lecture, 2/18/2009 http//pr.ca
ltech.edu/periodicals/caltechnews/articles/v42/sun
.html
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Harry Gray, Watson Lecture, 2/18/2009
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SHArK Outreach http//www.thesharkproject.org/
Harry Grays Powering the Planet with Solar Fuels
Lecture at Caltechs Beckman Auditorium on
2/18/2009- features SHArK demonstration and a
call for a solar army of students to work on
the challenges. http//today.caltech.edu/theater/i
tem?story5fid33982 Lectures by Nate
Lewis- http//today.caltech.edu/theater/item?story
_id8424 (5/25/05) http//nrg.caltech.edu/index.h
tml (11/30/2007)
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Powering the Planet Project Solar Carpet Video
Clip With Nate Lewis http//www.thirteen.org/curio
us/survival/creating-an-artificial-leaf/17/
Solar Water Splitting Model
http//www.ccisolar.caltech.edu/webpage/95
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http//web.mit.edu/newsoffice/2008/oxygen-0731.htm
l Daniel Nocera and Matthew Kanan, MIT