Enhanced Stability of Immobilized Platinum Nanoparticles through Nitrogen Heteroatoms on Doped Carbon Supports. Shi, W., Wu, K., Xu, J., Zhang, Q., Zhang, B., & Su, D. Chemistry of Materials, 29(20):8670-8678, 2017. cited By 20![Enhanced Stability of Immobilized Platinum Nanoparticles through Nitrogen Heteroatoms on Doped Carbon Supports [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Catalysts in the form of dispersed platinum nanoparticles (Pt NPs) immobilized on carbon usually suffer from deactivation through sintering under reaction conditions. In this contribution, we report the enhanced stability of highly dispersed Pt NPs on surface-modified carbon nanotubes (CNTs) against thermal and electrochemical sintering by N heteroatoms in the N-doped carbon support. The improved antisintering property of Pt NPs under thermal condition is characterized by in situ transmission electron microscopy (TEM), while the stability in electrochemical methanol oxidation reaction (MOR) is further examined at identical location (IL) using an advanced IL-TEM technique. A correlation of the Pt NP growth with the electrochemical surface area (ECSA) and the mass activity in MOR has been inferred. Our results indicate that both the surface oxygen groups and nitrogen-doped species are responsible for the fine dispersion of Pt NPs on the surface-modified CNTs, while the Pt NPs can be effectively stabilized under thermal and electrochemical conditions through the strong metal-support interaction via N heteroatoms. We further reveal that the mass activity of Pt NP is closely associated with the ECSA rather than directly affected by N-doping to CNTs. © 2017 American Chemical Society.
@ARTICLE{Shi20178670,
author={Shi, W. and Wu, K.-H. and Xu, J. and Zhang, Q. and Zhang, B. and Su, D.S.},
title={Enhanced Stability of Immobilized Platinum Nanoparticles through Nitrogen Heteroatoms on Doped Carbon Supports},
journal={Chemistry of Materials},
year={2017},
volume={29},
number={20},
pages={8670-8678},
doi={10.1021/acs.chemmater.7b02658},
note={cited By 20},
url={https://www.scopus.com/inward/record.uri?eid=2-s2.0-85032003393&doi=10.1021%2facs.chemmater.7b02658&partnerID=40&md5=c09c9fe897470a2224dc09b53dd31559},
abstract={Catalysts in the form of dispersed platinum nanoparticles (Pt NPs) immobilized on carbon usually suffer from deactivation through sintering under reaction conditions. In this contribution, we report the enhanced stability of highly dispersed Pt NPs on surface-modified carbon nanotubes (CNTs) against thermal and electrochemical sintering by N heteroatoms in the N-doped carbon support. The improved antisintering property of Pt NPs under thermal condition is characterized by in situ transmission electron microscopy (TEM), while the stability in electrochemical methanol oxidation reaction (MOR) is further examined at identical location (IL) using an advanced IL-TEM technique. A correlation of the Pt NP growth with the electrochemical surface area (ECSA) and the mass activity in MOR has been inferred. Our results indicate that both the surface oxygen groups and nitrogen-doped species are responsible for the fine dispersion of Pt NPs on the surface-modified CNTs, while the Pt NPs can be effectively stabilized under thermal and electrochemical conditions through the strong metal-support interaction via N heteroatoms. We further reveal that the mass activity of Pt NP is closely associated with the ECSA rather than directly affected by N-doping to CNTs. © 2017 American Chemical Society.},
keywords={Carbon nanotubes; Doping (additives); High resolution transmission electron microscopy; In situ processing; Nanoparticles; Nitrogen; Platinum; Sintering; Transmission electron microscopy; Yarn, Electrochemical conditions; Electrochemical surface area; In situ transmission electron microscopy (TEM); Methanol oxidation reactions; Platinum nano-particles; Reaction conditions; Strong metal support interaction; Surface oxygen groups, Platinum metals},
document_type={Article},
source={Scopus},
}
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