Conducting Polymer-Based Electrodeless Deposition of Pt Nanoparticles and Its Catalytic Properties for Regioselective Hydrosilylation Reactions

Shih, Hung-Hsin; Williams, D. J.; Mack, Nathan H.; Wang, Hsing‐Lin

doi:10.1021/ma802219z

Cited by 38 publications

(22 citation statements)

References 14 publications

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“…AgNPs have been used as catalyst [1][2][3], in nonlinear optical technology, as a bactericidal agent in apparel, footwear, cosmetics, and biomedical devices [4,5], and in conductive applications and nanosphere lithography [6], among other applications. Due to their size, nanoparticles present unique and radically different physical, chemical, and biological properties compared to bulk materials; in addition to size, the properties also depend on their shapes, configurations, crystallinity, and structure [7].…”

Section: Introductionmentioning

confidence: 99%

“…Journal of Nanomaterials AgNPs can be obtained by chemical, physical, and biological methods. In the chemical routes, silver ions in aqueous solutions are reduced, with or without stabilizing agents, by using electrochemical reduction, photoreduction in reverse and bicontinuous micelles, and chemical reduction [6,[8][9][10]. The physical methods include evaporation-condensation and laser ablation [11].…”

Section: Introductionmentioning

confidence: 99%

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Silver Nanoparticles Obtained by Semicontinuous Chemical Reduction Using Carboxymethyl Cellulose as a Stabilizing Agent and Its Antibacterial Capacity

Pedroza-Toscano

López-Cuenca²,

Rabelero-Velasco

et al. 2017

Journal of Nanomaterials

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Preparation of silver nanoparticles was carried out by semicontinuous reduction of Ag + ions at low temperatures. Silver nitrate was used as the Ag 0 precursor, the carboxymethyl cellulose (CMC) as stabilizer and primary reducing agent, and sodium borohydride as reducing agent. Weight ratios of 1 : 1 and 1 : 2 of AgNO 3 : CMC were used for carrying out the reactions. Silver nanoparticles were characterized by UV-VIS spectroscopy, transmission electronic microscopy (TEM), and X-ray diffraction (XRD). The formation of silver nanoparticles was confirmed by XRD spectroscopy and by the presence of an absorption peak around 400 nm in the UV-visible spectrum. Unimodal size distributions of spheroidal nanoparticles were observed by TEM. Greater productivities than those reported by other authors were obtained with the advantage of using a lower temperature and minor reaction times. By using a higher CMC/AgNO 3 weight ratio or a higher concentration of AgNO 3 , AgNPs with larger average size were produced. Antibacterial activity of AgNPs against S. aureus and E. coli was determined by the agar disk diffusion method. The higher the AgNPs concentration, the larger the inhibition zone. The minimum inhibitory concentration (MIC) of AgNPs against S. aureus and E. coli was 5 g/disk.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Silver Nanoparticles Obtained by Semicontinuous Chemical Reduction Using Carboxymethyl Cellulose as a Stabilizing Agent and Its Antibacterial Capacity

Pedroza-Toscano

López-Cuenca²,

Rabelero-Velasco

et al. 2017

Journal of Nanomaterials

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“…The one‐dimensional structure of these PANI nanofibers (PANI‐NF), which can be easily prepared with controllable diameters, has produced considerable interest in these materials 10–12. In addition, PANI materials exhibit excellent redox properties for reducing certain metal ions and for producing PANI–metal nanoparticle composites,13–16 which have been used for various applications 13, 14, 17–19. Our research group has long been involved in the study of conducting polymers,20–24 with a particular focus on different aspects of nanomaterials 25, 26…”

Section: Introductionmentioning

confidence: 99%

Polyaniline–Polypyrrole Composites with Enhanced Hydrogen Storage Capacities

Attia

Geckeler

2013

Macromol. Rapid Commun.

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A facile method for the synthesis of polyaniline-polypyrrole composite materials with network morphology is developed based on polyaniline nanofibers covered by a thin layer of polypyrrole via vapor phase polymerization. The hydrogen storage capacity of the composites is evaluated at room temperature exhibits a twofold increase in hydrogen storage capacity. The HCl-doped polyaniline nanofibers exhibit a storage capacity of 0.46 wt%, whereas the polyaniline-polypyrrole composites could store 0.91 wt% of hydrogen gas. In addition, the effect of the dopant type, counteranion size, and the doping with palladium nanoparticles on the storage properties are also investigated.

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“…Polyaniline (PAn) is one of the most popular conducting polymers that have been investigated. The merits of PAn include the high conductivity, fast charge and discharge, easy preparation, and low price 19–22. When doped with poly (styrene sulfonate ) PSS, PAn has improved stability, conductivity, miscibility, and electroactivity 21, 23.…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic performance of Pt supported on polyaniline‐poly(styrene sulfonate) hydrogel

Jia

Jiang

Sun

et al. 2012

J of Applied Polymer Sci

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A new type of polyaniline-poly (styrene sulfonate) (PAn-PSS) hydrogel was fabricated with high concentrations of aniline (An) and PSS via supramolecular selfassembly. Then 30 segments of cyclic voltammograms from À0.2 to 0.8 V were conducted to deposit the Pt particles on the surface of the hydrogel. For comparison, PAn-PSS colloid was synthesized with the ordinary method. The morphology and composition of the PAn-PSS hydrogel-Pt and PAn-PSS colloid-Pt were investigated by the TEM and EDX measurements. Furthermore, the shift of the feature bands in FTIR and UV-vis spectra confirms that the PAn-PSS hydrogel has interactions with Pt. So the Pt particles are dispersed and the electrons are shuttled more freely, which is beneficial for the electrochemical performance. The cyclic voltammograms and chronoamperometric measurements show that Pt supported on the PAn-PSS hydrogel has preferable electrocatalytic performance toward the oxidation of methanol than the one on PAn-PSS colloid. Hence, PAn-PSS hydrogel-Pt can be a promising catalyst for methanol in fuel cells.

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Conducting Polymer-Based Electrodeless Deposition of Pt Nanoparticles and Its Catalytic Properties for Regioselective Hydrosilylation Reactions

Cited by 38 publications

References 14 publications

Silver Nanoparticles Obtained by Semicontinuous Chemical Reduction Using Carboxymethyl Cellulose as a Stabilizing Agent and Its Antibacterial Capacity

Silver Nanoparticles Obtained by Semicontinuous Chemical Reduction Using Carboxymethyl Cellulose as a Stabilizing Agent and Its Antibacterial Capacity

Polyaniline–Polypyrrole Composites with Enhanced Hydrogen Storage Capacities

Electrocatalytic performance of Pt supported on polyaniline‐poly(styrene sulfonate) hydrogel

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