Science
9 October 2015:
Vol. 350 no. 6257 pp. 164-165
DOI: 10.1126/science.aad3716
Vol. 350 no. 6257 pp. 164-165
DOI: 10.1126/science.aad3716
- Perspective
The importance of being together
+ Author Affiliations
Platinum catalyzes several chemical and
electrochemical reactions that are central to humankind's use of
energy, such as the
electrochemical reduction of molecular oxygen,
carbon monoxide oxidation, and the water-gas shift reaction to produce
carbon
dioxide and hydrogen from carbon monoxide and
water. Two reports in the current issue provide insights into which
platinum
coordination number—defined as the number of
nearest neighbors—may provide the highest catalytic activities for these
reactions.
On page 185, Calle-Vallejo et al. use the concept of generalized coordination numbers to show that concave atomic sites on a platinum single crystal are highly
active for oxygen electroreduction (1). On page 189, Ding et al. use spectroscopic techniques to determine what role isolated Pt atoms play in CO oxidation and the water-gas shift reaction
(2)
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