Crystalline nanoscale platinum(0) clusters in glassy carbon

Schueller, Olivier; Pocard, Nicolas L.; Huston, Michael E.; Spontak, Richard J.; Neenan, Thomas X.; Callstrom, Matthew R.

doi:10.1021/cm00025a005

Cited by 17 publications

(14 citation statements)

References 8 publications

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“…The variation of Pt content does not change the Pt nanoparticles size. This is different from the previous works, − which show that the Pt particles sizes increase with the higher Pt atom concentration. They prepared 0.9, 1.1, and 1.5% Pt-GCs, with the average cluster sizes of 8, 10, and 15 Å, respectively.…”

Section: Resultscontrasting

confidence: 99%

“…In comparison with methods reported in prior work, − the RF method is relatively simple. We can prepare Pt−NEGCF at the low temperature of 200 °C, whereas prior work required a higher temperature of 600 °C.…”

Section: Resultsmentioning

confidence: 99%

“…However, very few papers have reported the preparation of uniform platinum-cluster dispersed carbon film. McCreery and co-workers − and others have published a series of articles on the synthesis of nanoscale platinum (0) clusters in glassy carbon (not solely on a glassy carbon surface) by incorporation of platinum in a glassy carbon precursor followed by thermolysis at 600 °C. This kind of platinum (0) doped glassy carbon (Pt−GC) exhibits high catalytic activity for the reduction of H + and dioxygen.…”

Section: Introductionmentioning

confidence: 99%

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Co-Sputtered Thin Film Consisting of Platinum Nanoparticles Embedded in Graphite-Like Carbon and Its High Electrocatalytic Properties for Electroanalysis

et al. 2002

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The radio frequency (RF) sputtering method was used to prepare nanoscale platinum (0) particles highly dispersed in a graphite-like carbon film (Pt-NEGCF) by co-sputtering platinum and carbon. The preparation is very simple, controllable, and reproducible. We studied this film with respect to its structural characterization and electrocatalytic properties. The XPS spectrum reveals that the platinum state in the Pt-NEGCF is platinum (0). TEM images show that the structure of the carbon in the film is graphite-like and that the platinum particles are highly dispersed in the carbon matrix. The electrochemical properties of the Pt-NEGCF electrode were evaluated. Compared with Pt bulk electrode, this film electrode is highly electrocatalytic as regards hydrogen evolution, dioxygen reduction, and hydrogen peroxide oxidation with good stability.

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Section: Resultscontrasting

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Co-Sputtered Thin Film Consisting of Platinum Nanoparticles Embedded in Graphite-Like Carbon and Its High Electrocatalytic Properties for Electroanalysis

et al. 2002

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“…Much recent effort has been directed toward the fabrication of polymers containing nanometer-sized clusters of inorganic semiconductors. [1][2][3][4][5][6] Recent advances in the synthesis of highly monodisperse CdSe nanoclusters ("quantum dots"), 7 coupled with methodologies for the preparation of ROMP polymers with very narrow molecular weight distributions, [8][9][10][11] offer an unprecedented level of control over the molecular architecture of the composite materials. Most of the reported approaches to such composites involve in situ aggregation of labile metal species within a polymer matrix.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Quantum Dot/Polymer Composites: Phosphine-Functionalized Block Copolymers as Passivating Hosts for Cadmium Selenide Nanoclusters

et al. 1997

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Nearly monodisperse CdSe nanoclusters, surface-passivated with a layer of trioctylphosphine and trioctylphosphine oxide, have been sequestered within phosphine-containing domains in a diblock copolymer. A convergent approach to fabrication of these composites was adopted via independent synthesis of nanoclusters and polymer. Diblock copolymers of phosphine- or phosphine oxide-functionalized monomers and methyltetracyclododecene (MTD) were prepared by ring opening metathesis polymerization using Mo alkylidene initiators. Nanoclusters were prepared by pyrolysis of CdMe2 and SeP(octyl)3 in the presence of P(octyl)3 and OP(octyl)3. An immediate and sustained increase in electronic passivation is found for nanoclusters incorporated into octylphosphine-containing polymers. In contrast, nanoclusters in pure hydrocarbon or phosphine oxide-containing polymers rapidly lose passivation. Films of nanoclusters in a phosphine-containing polymer matrix were static cast from dilute solution. Under suitable conditions, the copolymers underwent microphase separation, and the metal chalcogenide clusters were predominantly sequestered within the phosphine-containing microdomains. The original, highly uniform cluster size distribution was unaffected.

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“…Very few papers have reported the preparation of uniform Pt cluster dispersed carbon film. [36][37][38][39][40] Mc-Creery et al reported nanoscale Pt(0) clusters in glassy carbon (Pt-GC) that they obtained by incorporating Pt into carbon precursors, poly(phenylene-1,3-diacetylene) or poly(1,2,3,5-tetrafluorophenylene-1,3-diacetylene), and then pyrolizing them at 600 °C. Although this process can be used to prepare Pt nanoparticles in glassy carbon, the synthesis of carbon precursors and the incorporation of Pt require sophisticated polymer synthesis skills and many steps to obtain the final products.…”

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confidence: 99%

Characterization of Platinum Nanoparticle-Embedded Carbon Film Electrode and Its Detection of Hydrogen Peroxide

et al. 2003

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A method for the highly sensitive determination of acetylcholine (ACh) and choline (Ch) that employs a graphite-like carbon film electrode containing 6.5% platinum (Pt) nanoparticles was developed for use as a detector in microbore liquid chromatography (LC) with a postcolumn enzyme reactor. The film electrode was prepared by RF cosputtering carbon and Pt, which requires only a one-step formation process. This method can control the Pt content of the film at a relatively low deposition temperature (below 200 degrees C). The average size of the Pt nanoparticles was 2.5 nm. The film electrode showed excellent electrocatalytic activity, high sensitivity, and negligible baseline drift when detecting hydrogen peroxide. The electrode was modified with glucose oxidase and responded rapidly to glucose with a much more stable baseline current than at a Pt bulk electrode based sensor. Therefore, it is appropriate to employ the electrode to detect trace amounts of biomolecules, such as neurotransmitters and hormones combined with various oxidase enzymes. We used the electrode as a detector for microbore LC and observed a low detection limit of 2.5 and 2.3 fmol (10-microL injection) for ACh and Ch, respectively, which is approximately 1 order of magnitude lower than that of a Pt bulk electrode.

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Crystalline nanoscale platinum(0) clusters in glassy carbon

Cited by 17 publications

References 8 publications

Co-Sputtered Thin Film Consisting of Platinum Nanoparticles Embedded in Graphite-Like Carbon and Its High Electrocatalytic Properties for Electroanalysis

Co-Sputtered Thin Film Consisting of Platinum Nanoparticles Embedded in Graphite-Like Carbon and Its High Electrocatalytic Properties for Electroanalysis

Fabrication of Quantum Dot/Polymer Composites: Phosphine-Functionalized Block Copolymers as Passivating Hosts for Cadmium Selenide Nanoclusters

Characterization of Platinum Nanoparticle-Embedded Carbon Film Electrode and Its Detection of Hydrogen Peroxide

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