Highly accessible aqueous synthesis of well-dispersed dendrimer type platinum nanoparticles and their catalytic applications

Adrián Fernández-Lodeiro, Jamila Djafari, David Lopez-Tejedor, Carlos Perez-Rizquez, Benito Rodríguez-González, José Luis Capelo, Jose M. Palomo, Carlos Lodeiro, Javier Fernández-Lodeiro

Research output: Contribution to journalArticle

Abstract

The application of novel methodologies to the synthesis of nanomaterials is still a challenge in many different technological and scientific fields. New efficient and reproducible synthetic methodologies, that produce fewer residues and reduce the cost of raw materials must be developed. In the present work, we have explored the attractive possibility to apply the cheap iron (II) sulphate salt in the reduction process of the K 2 PtCl 4 to produce colloids suspensions. The synthesis took places in water and was assisted by sodium citrate (SC) using polyvinylpyrrolidone (PVP) as a surfactant. The adjustment of this novelty process allows obtaining well-dispersed and sub-20 nm dendrimer-type platinum nanoparticles (Pt D-NPs). The nano-dendrimers produced have been characterized using dynamic light scattering (DLS), transmission electron microscopy (TEM), high-resolution TEM (HR-TEM), XRD spectroscopy, inductive couple plasma (ICP) analysis, Fourier transform infrared (FT-IR) and ultraviolet-visible (UV-vis) spectroscopy. Interesting conformational results derived from the size and shape will be discussed. Catalytic application of the Pt D-NPs has been explored in the reduction of p-nitrophenol (p-NP) to p-aminophenol (p-AP) in aqueous media at room temperature obtained TOF value of 253 min -1 . Finally, our Pt D-NPs were tested as artificial metalloenzyme showing catechol oxidase activity for oxidation of L-DOPA.[Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)1083-1092
Number of pages10
JournalNano Research
Volume12
Issue number5
DOIs
Publication statusPublished - 1 May 2019

Fingerprint

Dendrimers
Platinum
Nanoparticles
Catechol Oxidase
Povidone
Ultraviolet visible spectroscopy
Colloids
Dynamic light scattering
High resolution transmission electron microscopy
Nanostructured materials
Surface-Active Agents
Sulfates
Suspensions
Fourier transforms
Raw materials
Surface active agents
Iron
Salts
Sodium
Spectroscopy

Keywords

  • catalytic application
  • catechol oxidase-like activity
  • green synthesis
  • platinum dendrimer NPs

Cite this

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title = "Highly accessible aqueous synthesis of well-dispersed dendrimer type platinum nanoparticles and their catalytic applications",
abstract = "The application of novel methodologies to the synthesis of nanomaterials is still a challenge in many different technological and scientific fields. New efficient and reproducible synthetic methodologies, that produce fewer residues and reduce the cost of raw materials must be developed. In the present work, we have explored the attractive possibility to apply the cheap iron (II) sulphate salt in the reduction process of the K 2 PtCl 4 to produce colloids suspensions. The synthesis took places in water and was assisted by sodium citrate (SC) using polyvinylpyrrolidone (PVP) as a surfactant. The adjustment of this novelty process allows obtaining well-dispersed and sub-20 nm dendrimer-type platinum nanoparticles (Pt D-NPs). The nano-dendrimers produced have been characterized using dynamic light scattering (DLS), transmission electron microscopy (TEM), high-resolution TEM (HR-TEM), XRD spectroscopy, inductive couple plasma (ICP) analysis, Fourier transform infrared (FT-IR) and ultraviolet-visible (UV-vis) spectroscopy. Interesting conformational results derived from the size and shape will be discussed. Catalytic application of the Pt D-NPs has been explored in the reduction of p-nitrophenol (p-NP) to p-aminophenol (p-AP) in aqueous media at room temperature obtained TOF value of 253 min -1 . Finally, our Pt D-NPs were tested as artificial metalloenzyme showing catechol oxidase activity for oxidation of L-DOPA.[Figure not available: see fulltext.]",
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Highly accessible aqueous synthesis of well-dispersed dendrimer type platinum nanoparticles and their catalytic applications. / Fernández-Lodeiro, Adrián; Djafari, Jamila; Lopez-Tejedor, David; Perez-Rizquez, Carlos; Rodríguez-González, Benito; Capelo, José Luis; Palomo, Jose M.; Lodeiro, Carlos; Fernández-Lodeiro, Javier.

In: Nano Research, Vol. 12, No. 5, 01.05.2019, p. 1083-1092.

Research output: Contribution to journalArticle

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T1 - Highly accessible aqueous synthesis of well-dispersed dendrimer type platinum nanoparticles and their catalytic applications

AU - Fernández-Lodeiro, Adrián

AU - Djafari, Jamila

AU - Lopez-Tejedor, David

AU - Perez-Rizquez, Carlos

AU - Rodríguez-González, Benito

AU - Capelo, José Luis

AU - Palomo, Jose M.

AU - Lodeiro, Carlos

AU - Fernández-Lodeiro, Javier

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AB - The application of novel methodologies to the synthesis of nanomaterials is still a challenge in many different technological and scientific fields. New efficient and reproducible synthetic methodologies, that produce fewer residues and reduce the cost of raw materials must be developed. In the present work, we have explored the attractive possibility to apply the cheap iron (II) sulphate salt in the reduction process of the K 2 PtCl 4 to produce colloids suspensions. The synthesis took places in water and was assisted by sodium citrate (SC) using polyvinylpyrrolidone (PVP) as a surfactant. The adjustment of this novelty process allows obtaining well-dispersed and sub-20 nm dendrimer-type platinum nanoparticles (Pt D-NPs). The nano-dendrimers produced have been characterized using dynamic light scattering (DLS), transmission electron microscopy (TEM), high-resolution TEM (HR-TEM), XRD spectroscopy, inductive couple plasma (ICP) analysis, Fourier transform infrared (FT-IR) and ultraviolet-visible (UV-vis) spectroscopy. Interesting conformational results derived from the size and shape will be discussed. Catalytic application of the Pt D-NPs has been explored in the reduction of p-nitrophenol (p-NP) to p-aminophenol (p-AP) in aqueous media at room temperature obtained TOF value of 253 min -1 . Finally, our Pt D-NPs were tested as artificial metalloenzyme showing catechol oxidase activity for oxidation of L-DOPA.[Figure not available: see fulltext.]

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