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Atomic layer deposition route to tailor nanoalloys of noble and non-noble metals

(2016) ACS NANO. 10(9). p.8770-8777
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Abstract
Since their early discovery, bimetallic nanoparticles have revolutionized various fields, including nanomagnetism and optics as well as heterogeneous catalysis. Knowledge buildup in the past decades has witnessed that the nanoparticle size and composition strongly impact the nanoparticle's properties and performance. Yet, conventional synthesis strategies lack proper control over the nanoparticle morphology and composition. Recently, atomically precise synthesis of bimetallic nanoparticles has been achieved by atomic layer deposition (ALD), alleviating particle size and compositional nonuniformities. However, this bimetal ALD strategy applies to noble metals only, a small niche within the extensive class of bimetallic alloys. We report an ALD-based approach for the tailored synthesis of bimetallic nanoparticles containing both noble and non-noble metals, here exemplified for Pt-In. First, a Pt/In2O3 bilayer is deposited by ALD, yielding precisely defined Pt-In nanoparticles after high temperature H-2 reduction. The nanoparticles In content can be accurately controlled over the whole compositional range, and the particle size can be tuned from micrometers down to the nanometer scale. The size and compositional flexibility provided by this ALD-approach will trigger the fabrication of fully tailored bimetallic nanomaterials, including superior nanocatalysts.
Keywords
RAY-ABSORPTION SPECTROSCOPY, IN-SITU XAS, PROPANE DEHYDROGENATION, BIMETALLIC NANOPARTICLES, CATALYSTS, PLATINUM, REDUCTION, HYDROGEN, FILMS, ALD, bimetallic nanoparticles, nanocatalysts, platinum, indium

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Citation

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Chicago
Karuparambil Ramachandran, Ranjith, Jolien Dendooven, Matthias Filez, Vladimir Galvita, Hilde Poelman, Eduardo Solano Minuesa, Matthias Minjauw, et al. 2016. “Atomic Layer Deposition Route to Tailor Nanoalloys of Noble and Non-noble Metals.” Acs Nano 10 (9): 8770–8777.
APA
Karuparambil Ramachandran, R., Dendooven, J., Filez, M., Galvita, V., Poelman, H., Solano Minuesa, E., Minjauw, M., et al. (2016). Atomic layer deposition route to tailor nanoalloys of noble and non-noble metals. ACS NANO, 10(9), 8770–8777.
Vancouver
1.
Karuparambil Ramachandran R, Dendooven J, Filez M, Galvita V, Poelman H, Solano Minuesa E, et al. Atomic layer deposition route to tailor nanoalloys of noble and non-noble metals. ACS NANO. 2016;10(9):8770–7.
MLA
Karuparambil Ramachandran, Ranjith, Jolien Dendooven, Matthias Filez, et al. “Atomic Layer Deposition Route to Tailor Nanoalloys of Noble and Non-noble Metals.” ACS NANO 10.9 (2016): 8770–8777. Print.
@article{8510078,
  abstract     = {Since their early discovery, bimetallic nanoparticles have revolutionized various fields, including nanomagnetism and optics as well as heterogeneous catalysis. Knowledge buildup in the past decades has witnessed that the nanoparticle size and composition strongly impact the nanoparticle's properties and performance. Yet, conventional synthesis strategies lack proper control over the nanoparticle morphology and composition. Recently, atomically precise synthesis of bimetallic nanoparticles has been achieved by atomic layer deposition (ALD), alleviating particle size and compositional nonuniformities. However, this bimetal ALD strategy applies to noble metals only, a small niche within the extensive class of bimetallic alloys. We report an ALD-based approach for the tailored synthesis of bimetallic nanoparticles containing both noble and non-noble metals, here exemplified for Pt-In. First, a Pt/In2O3 bilayer is deposited by ALD, yielding precisely defined Pt-In nanoparticles after high temperature H-2 reduction. The nanoparticles In content can be accurately controlled over the whole compositional range, and the particle size can be tuned from micrometers down to the nanometer scale. The size and compositional flexibility provided by this ALD-approach will trigger the fabrication of fully tailored bimetallic nanomaterials, including superior nanocatalysts.},
  author       = {Karuparambil Ramachandran, Ranjith and Dendooven, Jolien and Filez, Matthias and Galvita, Vladimir and Poelman, Hilde and Solano Minuesa, Eduardo and Minjauw, Matthias and Devloo-Casier, Kilian and Fonda, Emiliano and Hermida-Merino, Daniel and Bras, Wim and Marin, Guy and Detavernier, Christophe},
  issn         = {1936-0851},
  journal      = {ACS NANO},
  keyword      = {RAY-ABSORPTION SPECTROSCOPY,IN-SITU XAS,PROPANE DEHYDROGENATION,BIMETALLIC NANOPARTICLES,CATALYSTS,PLATINUM,REDUCTION,HYDROGEN,FILMS,ALD,bimetallic nanoparticles,nanocatalysts,platinum,indium},
  language     = {eng},
  number       = {9},
  pages        = {8770--8777},
  title        = {Atomic layer deposition route to tailor nanoalloys of noble and non-noble metals},
  url          = {http://dx.doi.org/10.1021/acsnano.6b04464},
  volume       = {10},
  year         = {2016},
}

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