2011
DOI: 10.1021/la104566e
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Formation of PdPt Alloy Nanodots on Gold Nanorods: Tuning Oxidase-like Activities via Composition

Abstract: The island growth mode of Pt was employed to guide the forma-tion of PdPt alloy nanodots on gold nanorods (Au@PdPt NRs). Well-defined alloy nanodots, with tunable Pd/Pt ratios from 0.2 to 5, distribute homogeneously on the surface of the Au NR. Formation of nanodots shell leads to the red-shift and broadening of the longitudinal surface plasmon resonance (LSPR) band of the Au NRs. The Au@PdPt alloy NRs exhibit catalytic activity toward oxidation of often-used chromogenic substrates by dissolved oxygen under mi… Show more

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Cited by 130 publications
(70 citation statements)
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“…This tendency was well consistent with previous reports on AgPt and PdPt alloy nanoparticles2637. It was recognized that electronic structure of metal NPs plays crucial role in influencing their catalytic activity.…”
Section: Resultssupporting
confidence: 93%
“…This tendency was well consistent with previous reports on AgPt and PdPt alloy nanoparticles2637. It was recognized that electronic structure of metal NPs plays crucial role in influencing their catalytic activity.…”
Section: Resultssupporting
confidence: 93%
“…9 Several of these applications necessitate the fine-tuning of the spectral position of the NPs' plasmonic band, which can be attained by modifying in a controllable way their morphological characteristics and/or compositional details as it happens for example through the preparation of alloyed, bimetallic or core−shell structures. 10 Among them, alloyed NPs are considered as the more versatile and flexible for the preparation of functional materials compared to the monometallic ones and other bimetallics (as, e.g., some core−shell structures). 11,12 The most important reason is not only that they combine the advantages of their metallic counterparts, but also because they exhibit a single plasmonic band, instead of two, which depends only on the ratio of the mole fractions of the two components.…”
Section: Introductionmentioning
confidence: 99%
“…Further, a second metal involving Pd, Fe, or Ag has been adopted to modulate electronic structures of Pt nanoparticles and subsequently to modulate their peroxidase-like or oxidase-like activities Zhang et al 2011;. On the other hand, thiophilicity exists between thiol-containing molecules and metal nanomaterials such as Au and Ag (Aina et al 2010;Huang et al 2013;Xue et al 2012;Shen et al 2009).…”
Section: Introductionmentioning
confidence: 99%