Carbon coated face-centered cubic Ru–C nanoalloys

Zhisheng Zhao; Chuanmin Meng; Peifang Li; Wenjun Zhu; Qianqian Wang; Yanming Ma; Guoyin Shen; Ligang Bai; Hongliang He; Duanwei He; Dongli Yu; Julong He; Bo Xu; Yongjun Tian

doi:10.1039/C4NR02632B

Carbon coated face-centered cubic Ru–C nanoalloys†

Zhisheng Zhao,‡^ad Chuanmin Meng,‡^b Peifang Li,§^c Wenjun Zhu,^b Qianqian Wang,^a Yanming Ma,^c Guoyin Shen,^d Ligang Bai,^d Hongliang He,^b Duanwei He,^e Dongli Yu,^a Julong He,^a Bo Xu*^a and Yongjun Tian^a

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* Corresponding authors

^a State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei 066004, China
E-mail: bxu@ysu.edu.cn

^b National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, Sichuan 621900, China

^c State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China

^d High Pressure Collaborative Access Team, Geophysical Laboratory, Carnegie Institution of Washington, Argonne, IL 60439, USA

^e Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China

Abstract

Carbon-encapsulated ruthenium–carbon (Ru–C) nanoalloys were synthesized by dynamic shocks. The Ru–C alloy shows a new fcc structure different from the original hcp structure of metal Ru. This fcc phase is assigned to a Ru₃₂C₄ solid solution with a lattice parameter of 3.868(2) Å and a bulk modulus K_T0 of 272(12) GPa. The small amount of carbon in the solid solution enhances the thermodynamic and chemical stabilities with respect to pure Ru, as well as induces changes in the electronic properties, which have direct applications in improving the material's catalytic activity and selectivity.

Nanoscale

Carbon coated face-centered cubic Ru–C nanoalloys†

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Carbon coated face-centered cubic Ru–C nanoalloys

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