Near-Monodisperse Ni−Cu Bimetallic Nanocrystals of Variable Composition: Controlled Synthesis and Catalytic Activity for H2 Generation

Near-monodisperse Ni1−x Cu x (x = 0.2−0.8) bimetallic nanocrystals were synthesized by a one-pot thermolysis approach in oleylamine/1-octadecene, using metal acetylacetonates as precursors. The nanocrystals form large-area 2D superlattices, and display a catalytic synergistic effect in the hydrolysi...

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Bibliographic Details
Published in:Journal of physical chemistry. C 2008-08, Vol.112 (32), p.12092-12095
Main Authors: Zhang, Yawen, Huang, Wenyu, Habas, Susan E, Kuhn, John N, Grass, Michael E, Yamada, Yusuke, Yang, Peidong, Somorjai, Gabor A
Format: Article
Language:English
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Summary:Near-monodisperse Ni1−x Cu x (x = 0.2−0.8) bimetallic nanocrystals were synthesized by a one-pot thermolysis approach in oleylamine/1-octadecene, using metal acetylacetonates as precursors. The nanocrystals form large-area 2D superlattices, and display a catalytic synergistic effect in the hydrolysis of NaBH4 to generate H2 at x = 0.5 in a strongly basic medium. The Ni0.5Cu0.5 nanocrystals show the lowest activation energy, and also exhibit the highest H2 generation rate at 298 K.
ISSN:1932-7447
1932-7455
DOI:10.1021/jp805788x