Publications

Introducing Stacking Faults into Three-Dimensional Branched Nickel Nanoparticles for Improved Catalytic Activity

Ramadhan, Z.R. and Poerwoprajitno, A.R. and Cheong, S. and Webster, R.F. and Kumar, P.V. and Cychy, S. and Gloag, L. and Benedetti, T.M. and Marjo, C.E. and Muhler, M. and Wang, D.-W. and Gooding, J.J. and Schuhmann, W. and Tilley, R.D.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume: 144 Pages: 11094-11098
DOI: 10.1021/jacs.2c04911
Published: 2022

Abstract
Creating high surface area nanocatalysts that contain stacking faults is a promising strategy to improve catalytic activity. Stacking faults can tune the reactivity of the active sites, leading to improved catalytic performance. The formation of branched metal nanoparticles with control of the stacking fault density is synthetically challenging. In this work, we demonstrate that varying the branch width by altering the size of the seed that the branch grows off is an effective method to precisely tune the stacking fault density in branched Ni nanoparticles. A high density of stacking faults across the Ni branches was found to lower the energy barrier for Ni2+/Ni3+oxidation and result in enhanced activity for electrocatalytic oxidation of 5-hydroxylmethylfurfural. These results show the ability to synthetically control the stacking fault density in branched nanoparticles as a basis for enhanced catalytic activity. © 2022 American Chemical Society. All rights reserved.

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