Comprehensive study to design advanced metal-carbide@garaphene and metal-carbide@iron oxide nanoparticles with tunable structure by the laser ablation in liquid

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@article{f6b1246551d44dd6a0f3540982c93b6e,
title = "Comprehensive study to design advanced metal-carbide@garaphene and metal-carbide@iron oxide nanoparticles with tunable structure by the laser ablation in liquid",
abstract = "Core-shell nanoparticles represent a class of materials that exhibit a variety of properties. By rationally tuning the cores and the shells in such nanoparticles (NPs), a range of materials with tailorable properties can be produced which are of interest for a wide variety of applications. Herein, experimental and theoretical approaches have been combined to show the structural transformation of NPs resulting to the formation of either NiFexCy encapsulated in ultra-thin graphene layer (NiFe@UTG) or Ni3C/FexCy@FeOx NPs with the universal one-step pulse laser ablation in liquid (PLAL) method. Analysis suggests that carbon in Ni3C is the source for the carbon shell formation, whereas the final carbon-shell thickness in the NPs originates from the difference between Ni3C and FexCy phases stability at room temperature. The ternary Ni-Fe-C phase diagram calculations reveal the competition between carbon solubility in the studied metals (Ni and Fe) and their tendency toward oxidation as the key properties to produce controlled core-shell NP materials. As an application example, the electrocatalytic hydrogen evolution current on the different NPs is measured. The electrochemical analysis of the NPs reveals that NiFe@UTG has the best performance amongst the NPs in this study in both alkaline and acidic media.",
keywords = "Carbon-shell formation, Core-shell nanoparticles, Hydrogen evolution reaction, Metal-carbide, Nickel-iron-carbon ternary phase diagram, Pulse laser ablation in liquid",
author = "Fatemeh Davodi and Elisabeth M{\"u}hlhausen and Daniel Settipani and Rautama, {Eeva Leena} and Honkanen, {Ari Pekka} and Simo Huotari and Galina Marzun and Pekka Taskinen and Tanja Kallio",
year = "2019",
month = "11",
day = "15",
doi = "10.1016/j.jcis.2019.08.056",
language = "English",
volume = "556",
pages = "180--192",
journal = "Journal of Colloid and Interface Science",
issn = "0021-9797",

}

RIS - Lataa

TY - JOUR

T1 - Comprehensive study to design advanced metal-carbide@garaphene and metal-carbide@iron oxide nanoparticles with tunable structure by the laser ablation in liquid

AU - Davodi, Fatemeh

AU - Mühlhausen, Elisabeth

AU - Settipani, Daniel

AU - Rautama, Eeva Leena

AU - Honkanen, Ari Pekka

AU - Huotari, Simo

AU - Marzun, Galina

AU - Taskinen, Pekka

AU - Kallio, Tanja

PY - 2019/11/15

Y1 - 2019/11/15

N2 - Core-shell nanoparticles represent a class of materials that exhibit a variety of properties. By rationally tuning the cores and the shells in such nanoparticles (NPs), a range of materials with tailorable properties can be produced which are of interest for a wide variety of applications. Herein, experimental and theoretical approaches have been combined to show the structural transformation of NPs resulting to the formation of either NiFexCy encapsulated in ultra-thin graphene layer (NiFe@UTG) or Ni3C/FexCy@FeOx NPs with the universal one-step pulse laser ablation in liquid (PLAL) method. Analysis suggests that carbon in Ni3C is the source for the carbon shell formation, whereas the final carbon-shell thickness in the NPs originates from the difference between Ni3C and FexCy phases stability at room temperature. The ternary Ni-Fe-C phase diagram calculations reveal the competition between carbon solubility in the studied metals (Ni and Fe) and their tendency toward oxidation as the key properties to produce controlled core-shell NP materials. As an application example, the electrocatalytic hydrogen evolution current on the different NPs is measured. The electrochemical analysis of the NPs reveals that NiFe@UTG has the best performance amongst the NPs in this study in both alkaline and acidic media.

AB - Core-shell nanoparticles represent a class of materials that exhibit a variety of properties. By rationally tuning the cores and the shells in such nanoparticles (NPs), a range of materials with tailorable properties can be produced which are of interest for a wide variety of applications. Herein, experimental and theoretical approaches have been combined to show the structural transformation of NPs resulting to the formation of either NiFexCy encapsulated in ultra-thin graphene layer (NiFe@UTG) or Ni3C/FexCy@FeOx NPs with the universal one-step pulse laser ablation in liquid (PLAL) method. Analysis suggests that carbon in Ni3C is the source for the carbon shell formation, whereas the final carbon-shell thickness in the NPs originates from the difference between Ni3C and FexCy phases stability at room temperature. The ternary Ni-Fe-C phase diagram calculations reveal the competition between carbon solubility in the studied metals (Ni and Fe) and their tendency toward oxidation as the key properties to produce controlled core-shell NP materials. As an application example, the electrocatalytic hydrogen evolution current on the different NPs is measured. The electrochemical analysis of the NPs reveals that NiFe@UTG has the best performance amongst the NPs in this study in both alkaline and acidic media.

KW - Carbon-shell formation

KW - Core-shell nanoparticles

KW - Hydrogen evolution reaction

KW - Metal-carbide

KW - Nickel-iron-carbon ternary phase diagram

KW - Pulse laser ablation in liquid

UR - http://www.scopus.com/inward/record.url?scp=85070856255&partnerID=8YFLogxK

U2 - 10.1016/j.jcis.2019.08.056

DO - 10.1016/j.jcis.2019.08.056

M3 - Article

VL - 556

SP - 180

EP - 192

JO - Journal of Colloid and Interface Science

JF - Journal of Colloid and Interface Science

SN - 0021-9797

ER -

ID: 36531131