Synthesis of highly dispersed platinum nanoparticles on multiwalled carbon nanotubes and their electrocatalytic activity toward hydrogen peroxide

Zhang, Jing; Gao, Lian

doi:10.1016/j.jallcom.2010.06.085

Cited by 13 publications

(6 citation statements)

References 47 publications

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“…Since carbon nanotubes (CNTs) discovery in 1991 by high-resolution transmission electron microscopy (TEM) [1], extensive interest has been shown in their physical, chemical, electrochemical, environmental and material science fields [2,3]. Applications of CNTs in the field of strong electrocatalytic response toward many important inorganic compounds or biomolecules [4,5] and (bio) chemical sensors [6] have recently been reported. Aligned CNT arrays (A-CNT), offer distinct advantages over loose and random oriented CNT powders.…”

Section: Introductionmentioning

confidence: 99%

Controlled Growth of Well-Aligned Carbon Nanotubes, Electrochemical Modification and Electrodeposition of Multiple Shapes of Gold Nanostructures

Fayazfar¹,

Afshar²,

Abolghasem³

2013

MSA

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An efficient method has been developed to synthesize well-aligned multi-walled carbon nanotubes (MWCNTs) on a conductive Ta substrate by chemical vapour deposition (CVD). Free-standing MWCNTs arrays were functionalized through electrochemical oxidation with the formation of hydroxyl and carboxyl functional groups. Using a new oven drying technique, we demonstrate that the unidirectionally aligned and laterally spaced geometry of the CNT arrays can be retained after being subjected to each step of electrochemical modification. Samples were analyzed by using a field emission scanning electron microscope (SEM), transmission electron microscope (TEM), Fourier transformed infrared (FTIR) and Raman spectroscopy. Useful electrochemical methods for the synthesis of various gold nanostructures onto the aligned MWCNTs were then presented for the first time. The results demonstrated that flowerlike nanoparticle arrays, nanosheets and nanoflowers were obtained on the aligned CNTs under different experimental conditions. These kinds of aligned-CNT/Au nanostructures hybrid materials introduced by these efficient and simple electrochemical methods could lead to development of a new generation device for ultrasensitive catalytic and biological application.

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Section: Introductionmentioning

confidence: 99%

Controlled Growth of Well-Aligned Carbon Nanotubes, Electrochemical Modification and Electrodeposition of Multiple Shapes of Gold Nanostructures

Fayazfar¹,

Afshar²,

Abolghasem³

2013

MSA

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“…The immobilization of metal nanoparticles on micro-and mesoporous supports such as Al(OH) 3 and silica, 1 zeolites, [2][3][4][5][6][7] polymeric micelles, [8][9][10][11][12][13][14] carbon nanotubes (CNTs) [15][16][17][18] or within ionic liquids [19][20][21][22][23][24] is a well-established technique. Compared to these ''standard'' supports, polymeric monoliths, originally developed for applications in separation science, [25][26][27][28][29][30] have entered the field of heterogeneous catalysis at a comparable late stage.…”

Section: Introductionmentioning

confidence: 99%

Polymeric monolith supported Pt-nanoparticles as ligand-free catalysts for olefinhydrosilylation under batch and continuous conditions

Bandari

Buchmeiser

2012

Catal. Sci. Technol.

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Pt-nanoparticles were generated within the mesopores of polymeric monolithic supports. These monoliths were prepared via ring-opening metathesis polymerization (ROMP) from (Z)-9-oxabicyclo[6.1.0]non-4-ene (OBN) and tris(cyclooct-4-en-1-yloxy)methylsilane (CL) using the 3 rd -generation Grubbs-initiator RuCl 2 (pyridine) 2 (IMesH 2 )(CHPh) (1) in the presence of a macro-and microporogen. To generate the Pt nanoparticles inside the porous system, the epoxy-groups of the monolithic supports were hydrolyzed into the corresponding vic-diol with the aid of 0.1 N sulfuric acid. Loading with Pt 4+ and reduction with NaBH 4 resulted in the formation of Pt nanoparticles o7 nm in diameter that were exclusively located within the mesopores of the support as demonstrated by transmission electron microscopy/EDX spectrometry. The nanoparticles were stabilized by both the vic-diols and the polymeric double bonds as evidenced by control experiments with poly(glycidylmethacrylate)-based monoliths that lack the double bonds. Typical metal loadings of around 1.7 mg g À1 (8.7 mmol g À1 ) were obtained. Pt(0)-loaded monoliths were used in the hydrosilylation of terminal alkenes, norborn-2-ene and norbornadiene applying both batch and continuous flow conditions. Hydrosilylation of olefins under continuous flow conditions resulted in constant product formation in 98% yield at T = 45 1C applying a linear flow of 12.0 mm min À1 . Metal leaching was very low, resulting in Pt-contamination in the addition products of less than 4 ppm throughout. Results and discussion Synthesis and characterization of monolithsEpoxy-based monolithic columns were prepared according to published procedures. 48 In brief, monoliths were prepared

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“…Carbon nanotube (CNT) has been proved to be a competitive and promising electrode material for adsorption or electrosorption due to its large surface area, high mechanical strength, remarkable electrical conductivity and high stability [12][13][14][15][16][17][18]. However, the hydrophobicity of CNT limits its application in electrosorption.…”

Section: Introductionmentioning

confidence: 99%

Carbon nanotube–chitosan composite electrodes for electrochemical removal of Cu(II) ions

Zhan

Pan

Nie

et al. 2011

Journal of Alloys and Compounds

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Synthesis of highly dispersed platinum nanoparticles on multiwalled carbon nanotubes and their electrocatalytic activity toward hydrogen peroxide

Cited by 13 publications

References 47 publications

Controlled Growth of Well-Aligned Carbon Nanotubes, Electrochemical Modification and Electrodeposition of Multiple Shapes of Gold Nanostructures

Controlled Growth of Well-Aligned Carbon Nanotubes, Electrochemical Modification and Electrodeposition of Multiple Shapes of Gold Nanostructures

Polymeric monolith supported Pt-nanoparticles as ligand-free catalysts for olefinhydrosilylation under batch and continuous conditions

Carbon nanotube–chitosan composite electrodes for electrochemical removal of Cu(II) ions

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