Single-Atom Catalyst of Platinum Supported on Titanium Nitride for Selective Electrochemical Reactions

Title
Single-Atom Catalyst of Platinum Supported on Titanium Nitride for Selective Electrochemical Reactions
Authors
양성은김지환탁영주Aloysius Soon이현주
Issue Date
2016-02
Publisher
Angewandte Chemie international edition
Citation
VOL 55, NO 6-2062
Abstract
As a catalyst, single-atom platinum may provide an ideal structure for platinum minimization. Herein, a single-atom catalyst of platinum supported on titanium nitride nanoparticles were successfully prepared with the aid of chlorine ligands. Unlike platinum nanoparticles, the single-atom active sites predominantly produced hydrogen peroxide in the electrochemical oxygen reduction with the highest mass activity reported so far. The electrocatalytic oxidation of small organic molecules, such as formic acid and methanol, also exhibited unique selectivity on the single-atom platinum catalyst. A lack of platinum ensemble sites changed the reaction pathway for the oxygen-reduction reaction toward a two-electron pathway and formic acid oxidation toward direct dehydrogenation, and also induced no activity for the methanol oxidation. This work demonstrates that single-atom platinum can be an efficient electrocatalyst with high mass activity and unique selectivity.
URI
http://pubs.kist.re.kr/handle/201004/71202
ISSN
1433-7851
Appears in Collections:
KIST Publication > Article
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