Facile synthesis of novel Pt–Ru@PPy–MWNT electrocatalysts for direct methanol fuel cells

Bae, Hyung-Bong; Ryu, Jungho; Byun, Bok-Soo; Jung, Sung‐Hee; Choi, Seong‐Ho

doi:10.1016/j.cap.2009.11.039

Cited by 24 publications

(11 citation statements)

References 28 publications

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“…For immobilization of the QD nanoparticles onto MWNT surface with hydrophobic property, we need the anchoring agents such as vinyl monomers, which possess a hydrophobic site and a hydrophilic site in an aqueous solution. In previous studies, we successfully deposited the Pt-Ru nanoparticles onto MWNT surface using various anchoring agents by γ-ray irradiation [ 33 – 35 ]. As shown in Figure 1(c,d) , the CdS QD (∼20 nm in size) and Cu 2 S QD (∼7 nm in size) were well dispersed onto MWNT surface.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of a Microbial Biosensor Based on QD-MWNT Supports by a One-Step Radiation Reaction and Detection of Phenolic Compounds in Red Wines

Kim

Kwen

Choi

2011

Sensors

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An Acaligense sp.-immobilized biosensor was fabricated based on QD-MWNT composites as an electron transfer mediator and a microbe immobilization support by a one-step radiation reaction and used for sensing phenolic compounds in commercial red wines. First, a quantum dot-modified multi-wall carbon nanotube (QD-MWNT) composite was prepared in the presence of MWNT by a one-step radiation reaction in an aqueous solution at room temperature. The successful preparation of the QD-MWNT composite was confirmed by XPS, TEM, and elemental analysis. Second, the microbial biosensor was fabricated by immobilization of Acaligense sp. on the surface of the composite thin film of a glassy carbon (GC) electrode, which was prepared by a hand casting method with a mixture of the previously obtained composite and Nafion solution. The sensing ranges of the microbial biosensor based on CdS-MWNT and Cu2S-MWNT supports were 0.5–5.0 mM and 0.7–10 mM for phenol in a phosphate buffer solution, respectively. Total concentration of phenolic compounds contained in commercial red wines was also determined using the prepared microbial immobilized biosensor.

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Section: Resultsmentioning

confidence: 99%

Fabrication of a Microbial Biosensor Based on QD-MWNT Supports by a One-Step Radiation Reaction and Detection of Phenolic Compounds in Red Wines

Kim

Kwen

Choi

2011

Sensors

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“…High surface area carbon supports are commonly used to increase the Pt surface area including active carbon, carbon black, carbon nanotubes and carbon aerogel [7,8]. Carbon black such as Vulcan XC-72 has been the most widely used catalyst support due to its superior properties [6].…”

Section: Introductionmentioning

confidence: 99%

“…The parameters such as alloy composition, uniformity, morphology, particle size, electronic state, etc. must be controlled to achieve the highly efficient catalysts [6]. High surface area carbon supports are commonly used to increase the Pt surface area including active carbon, carbon black, carbon nanotubes and carbon aerogel [7,8].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of polypyrrole/carbon composite as a catalyst support for fuel cell applications

Memioğlu

Bayrakçeken

Öznülüer

et al. 2012

International Journal of Hydrogen Energy

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“…This aggregation was overcome by modifying the surface of the carbon support to give it hydrophilic properties. This was done by in situ polymerization of β-caprolactone, methacrylate, and pyrrole using oxidizing agents as initiators [27]. Pt-Ru nanoparticles were then deposited on the polymerwrapped MWNT supports to produce a direct methanol fuel cell (DMFC) anode catalyst.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Nonenzymatic Glucose Sensors Based on Multiwalled Carbon Nanotubes with Bimetallic Pt-M (M = Ru and Sn) Catalysts by Radiolytic Deposition

2012

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Nonenzymatic glucose sensors employing multiwalled carbon nanotubes (MWNTs) with highly dispersed Pt-M (M = Ru and Sn) nanoparticles (Pt-M@PVP-MWNTs) were fabricated by radiolytic deposition. The Pt-M nanoparticles on the MWNTs were characterized by transmittance electron microscopy, elemental analysis, and X-ray diffraction. They were found to be well dispersed and to exhibit alloy properties on the MWNT support. Electrochemical testing showed that these nonenzymatic sensors had larger currents (mA) than that of a bare glassy carbon (GC) electrode and one modified with MWNTs. The sensitivity (A mM−1), linear range (mM), and detection limit (mM) (S/N = 3) of the glucose sensor with the Pt-Ru catalyst in NaOH electrolyte were determined as 18.0, 1.0–2.5, 0.7, respectively. The corresponding data of the sensor with Pt-Sn catalyst were 889.0, 1.00–3.00, and 0.3, respectively. In addition, these non-enzymatic sensors can effectively avoid interference arising from the oxidation of the common interfering species ascorbic acid and uric acid in NaOH electrolyte. The experimental results show that such sensors can be applied in the detection of glucose in commercial red wine samples.

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Facile synthesis of novel Pt–Ru@PPy–MWNT electrocatalysts for direct methanol fuel cells

Cited by 24 publications

References 28 publications

Fabrication of a Microbial Biosensor Based on QD-MWNT Supports by a One-Step Radiation Reaction and Detection of Phenolic Compounds in Red Wines

Fabrication of a Microbial Biosensor Based on QD-MWNT Supports by a One-Step Radiation Reaction and Detection of Phenolic Compounds in Red Wines

Synthesis and characterization of polypyrrole/carbon composite as a catalyst support for fuel cell applications

Fabrication of Nonenzymatic Glucose Sensors Based on Multiwalled Carbon Nanotubes with Bimetallic Pt-M (M = Ru and Sn) Catalysts by Radiolytic Deposition

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