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Issue 2, 2019
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Topological self-template directed synthesis of multi-shelled intermetallic Ni3Ga hollow microspheres for the selective hydrogenation of alkyne

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Abstract

Multi-shelled hollow structured materials featuring large void volumes and high specific surface areas are very promising for a variety of applications. However, controllable synthesis of multi-shelled hollow structured intermetallic compounds remains a formidable challenge due to the high annealing temperature commonly required for the formation of intermetallic phases. Here, a topological self-template strategy was developed to solve this problem. Using this strategy, we prepared well-defined multi-shelled intermetallic Ni3Ga hollow microspheres (Ni3Ga-MIHMs) as disclosed by the HAADF-STEM, HRTEM, and EDS characterizations, and the BET specific surface areas of them measured as much as 153.4 m2 g−1. XRD and EXAFS spectral characterizations revealed the atomically ordered intermetallic phase nature of the Ni3Ga-MIHMs. The selective hydrogenation of acetylene catalytic evaluation results further demonstrated excellent catalytic properties of the Ni3Ga-MIHMs, which results from the more energetically facile reaction pathway for acetylene hydrogenation and ethylene desorption over it as revealed by DFT calculations. Besides, this strategy is also extendable to synthesize other multi-shelled intermetallic Ni3Sn4 hollow microspheres, and is expected to open up new opportunities for rational design and preparation of novel structured and highly efficient intermetallics.

Graphical abstract: Topological self-template directed synthesis of multi-shelled intermetallic Ni3Ga hollow microspheres for the selective hydrogenation of alkyne

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Supplementary files

Article information


Submitted
18 Jul 2018
Accepted
18 Oct 2018
First published
19 Oct 2018

This article is Open Access
All publication charges for this article have been paid for by the Royal Society of Chemistry

Chem. Sci., 2019,10, 614-619
Article type
Edge Article

Topological self-template directed synthesis of multi-shelled intermetallic Ni3Ga hollow microspheres for the selective hydrogenation of alkyne

M. Hu, W. Yang, S. Liu, W. Zhu, Y. Li, B. Hu, Z. Chen, R. Shen, W. Cheong, Y. Wang, K. Zhou, Q. Peng, C. Chen and Y. Li, Chem. Sci., 2019, 10, 614 DOI: 10.1039/C8SC03178A

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