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Anomalous Phase Controlling Phenomenon in Ru and Bi Solid-Solution Alloying by Polyol Method at Ru-Rich Region
Panpan Cui1,2, Bo Huang1,2,3,4
1School of Chemical Engineering and Technology, Xi'an Jiaotong University, Innovation Harbour, Xixian-ward, Xi'an 712000, China.
None:
The syntheses of Bi-based solid-solution alloys are very significant and challenging. To synthesize RuBi solid-solution nanoparticles (NPs) by the polyol method, the effects of metal precursors, the amount of protecting agent, and reductant on the crystal structure and morphology were explored. The RuBi solid-solution NPs with face-centered cubic (fcc) structure were synthesized successfully for the first time, even by using a Ru precursor for hexagonal close-packed Ru. This anomalous phase controlling phenomenon originated from the nucleation process of Ru atoms with high-energy Bi atoms. Scan transmission electron microscope energy-dispersive X-ray mapping measurements demonstrated that Ru and Bi were homogeneously distributed at the atomic level as fcc-RuBi solid-solution NPs.
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