Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 144, Issue 25, Pages 11094-11098Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.2c04911
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Funding
- Australian Research Council [DP190102659, DP200100143, DP210102698]
- National Health and Medical Research Council [GNT1196648]
- UNSW Scientia Ph.D. Scholarship and Development Scheme
- Microscopy Australia
- Mark Wainwright Analytical Centre
- Electron Microscope Unit at the University of New South Wales
- Deutsche Forschungsgemeinschaft (DFG) [413163866]
- Germany's Excellence Strategy-EXC 2033 [390677874-RESOLV]
- Australian Research Council [DP200100143] Funding Source: Australian Research Council
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Creating high surface area nanocatalysts with stacking faults is a promising strategy for improving catalytic activity. This study demonstrates that controlling the branch width by varying the size of the seed can effectively tune the stacking fault density in branched Ni nanoparticles, resulting in enhanced electrocatalytic oxidation activity.
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.
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