Leading solar fuels research since 1994
 

Upcoming seminars and events

 

Tuesday September 24: 

Seminar by Cliff Kubiak, University of California, San Diego

"Selective reduction of CO2 to CO in water by molecular catalysts attached to carbon surfaces"

Time: 15:15   Place: Seminar room, House 7, floor 1

The highly selective electrochemical reduction of CO2 to CO in water by molecular catalysts incorporated into multi-walled carbon nanotubes (MWCNT) will be described. Current densities of ~ 4 mA/cm2 and selectivities (FECO) of 99% were achieved at -0.59 V vs. RHE in CO2 saturated aqueous KHCO3 solutions in the case of Re(tBu-bpy)(CO)3Cl as catalyst. This catalyst has been widely studied as a homogeneous catalyst in organic solvents.  Supporting Re(tBu-bpy)(CO)3Cl on MWCNTs significantly increases current densities, decreases overpotential, retains high selectivity for reduction of CO2 to CO, and allows operation in water at pH = 7.3, with significantly lower catalyst loadings compared to the molecular catalyst in acetonitrile solution.  The Re/MWCNT electrocatalysts achieve TON > 5600 and TOF > 1.6 s-1. A simple approach is described for preparation of selective and robust hybrid electrode materials by incorporation of molecular catalysts into the structure of highly porous heterogeneous materials.  

These results raise important questions about the nature of  supported molecular catalysts in the presence of electric fields at the surface of electrodes under bias.  Recent Sum Frequency Generation (SFG) spectroscopic studies of rhenium and manganese catalysts attached to gold electrode surfaces will be described.  Vibrational Stark tuning of the (CO) vibrational frequencies indicate that the catalysts experience electric fields on the order of 3 V/nm.  The influence of electric fields of this magnitude on catalyst activity will be discussed.

Previous news and events

CAP scientists in the TV news

At the CAP meeting in Umeå, March 4, 2019, CAP researchers were discussing future hydrogen technology. We also had the chance to test drive a fuel cell vehicle that runs on hydrogen gas. Swedish public service television filmed the event, which can be watched here: Vätgasbilar spås ha nyckelroll i framtiden


The First European Congress on Photosynthesis Research was a success!

Over 400 delegates from Europe, and all over the world, discussed recent findings in natural and artificial photosynthesison June 25 - 28, 2018. To see what it was all about, go to the conference homepage: ePS1.org

One of our prominent invited speakers, Junko Yano from Lawrence Berkeley National Laboratory, was interviewed in Swedish national radio. You can listen to the program here (mostly in Swedish).


The CAP workshop 2018

Our annual workshop was held at Sigtunahöjden in Sigtuna, on April 26-27. Thanks for all the interesting presentations everyone, you made the workshop great!

Participants on the 2018 CAP workshop in Sigtuna, basking in the April sun.

An osprey was seen flying past the workshop venue.


The Ångström laboratory (in 2010)



Last updated September 8, 2019