TY - JOUR
T1 - Size and Shape Effects on the Phase Diagrams of Nickel-Based Bimetallic Nanoalloys
AU - Guisbiers, G.
AU - Mendoza-Pérez, R.
AU - Bazán-Díaz, L.
AU - Mendoza-Cruz, R.
AU - Velázquez-Salazar, J. Jesús
AU - José-Yacamán, M.
N1 - Funding Information:
This project was supported by grants from the National Center for Research Resources (G12RR013646-12) and the National Institute on Minority Health and Health Disparities (G12MD007591) from the National Institutes of Health.
Publisher Copyright:
© 2017 American Chemical Society.
PY - 2017/3/30
Y1 - 2017/3/30
N2 - Nickel-based bimetallic nanoalloys (nickel-palladium, nickel-platinum, nickel-rhodium, and nickel-iridium) play an important role in catalysis, electrocatalysis, and magnetic applications. To improve the performance of those materials at the nanoscale, the knowledge of their phase diagrams is critically needed. However, such knowledge is still lacking because calorimetry experiments are extremely challenging to perform at the nanoscale. Then, a smart and necessary alternative to those challenging and time-consuming experiments is to obtain this knowledge from theoretical predictions by using nanothermodynamics. The phase diagrams at the nanoscale for the considered alloys are therefore predicted for various polyhedral shapes, while the nature of the surface segregated element is established by using two segregation rules. Finally, the theoretical results are supported by advanced transmission electron microscopy characterization.
AB - Nickel-based bimetallic nanoalloys (nickel-palladium, nickel-platinum, nickel-rhodium, and nickel-iridium) play an important role in catalysis, electrocatalysis, and magnetic applications. To improve the performance of those materials at the nanoscale, the knowledge of their phase diagrams is critically needed. However, such knowledge is still lacking because calorimetry experiments are extremely challenging to perform at the nanoscale. Then, a smart and necessary alternative to those challenging and time-consuming experiments is to obtain this knowledge from theoretical predictions by using nanothermodynamics. The phase diagrams at the nanoscale for the considered alloys are therefore predicted for various polyhedral shapes, while the nature of the surface segregated element is established by using two segregation rules. Finally, the theoretical results are supported by advanced transmission electron microscopy characterization.
UR - http://www.scopus.com/inward/record.url?scp=85019590815&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85019590815&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.6b09115
DO - 10.1021/acs.jpcc.6b09115
M3 - Article
AN - SCOPUS:85019590815
SN - 1932-7447
VL - 121
SP - 6930
EP - 6939
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 12
ER -