Investigation of the adsorption of size-selected Pt colloidal nanoparticles on high-surface-area graphene powders for methanol oxidation reaction

Sun, Chia‐Liang; Su, Jheng-Sin; Tang, Jui-Hsiang; Lin, Maofang; Wu, Jhing-Jhou; Pu, Nen-Wen; Shi, Gia-Nan; Ger, Ming-Der

doi:10.1016/j.jtice.2013.08.011

Cited by 13 publications

(6 citation statements)

References 35 publications

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“…Pt nanoparticles were synthesized using the polyol method reported in detail elsewhere [24][25][26][27]. In short, 0.4652 g PtCl 4 was dissolved in 50 mL ethylene glycol.…”

Section: Preparation Of Pt Colloidal Solutionmentioning

confidence: 99%

“…Graphene oxide powders were prepared following Staudenmaier's method and reduced to graphene powders by annealing at 1050 ∘ C under an argon atmosphere. 20 mg of graphene powders was mixed with the Pt colloidal solutions in a 40 mL solution containing 2 M sulfuric acid and ethylene glycol [25][26][27]. The volume ration between sulfuric acid and ethylene glycol is 1 to 1.…”

Section: Deposition Of Pt Nanoparticles On Graphenementioning

confidence: 99%

“…The catalyst ink for electrochemical measurement was prepared with the Pt-graphene powders. 3 mL deionized water, 2 mL ethanol, 60 L Nafion, and 6 mg Pt-graphene powders were sonicated to make the ink [25][26][27]. Potentiostat/galvanostat (CHI 405A) was used for electrochemical measurements.…”

Section: Electrode Preparation and Electrochemical Measurementsmentioning

confidence: 99%

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Size Effects of Pt Nanoparticle/Graphene Composite Materials on the Electrochemical Sensing of Hydrogen Peroxide

Sun

Lai

et al. 2015

Journal of Nanomaterials

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The electrochemical detection of hydrogen peroxide (H2O2) has attracted much attention recently. Meanwhile, the size of nanoparticles which significantly influences electrocatalytic activity is crucial for electrocatalysts. Hence, we prepared five different size-selected Pt/graphene-modified glassy carbon (GC) electrodes to characterize H2O2level via electrochemical measurements. During the preparation of the nanocomposites, size-selected Pt nanoparticles (NPs) with the mean diameter of 1.3, 1.7, 2.9, and 4.3 nm were assembled onto the graphene surfaces. The electrochemical measurement results are size-dependent for Pt NPs when sensing H2O2. When all cyclic voltammogram results from various electrodes are compared, the Pt-1.7 nm/G-modified GC electrode has the highest reduction current, the best detection limit, and the best sensitivity.

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“…Pt nanoparticles were synthesized using the polyol method reported in detail elsewhere [24][25][26][27]. In short, 0.4652 g PtCl 4 was dissolved in 50 mL ethylene glycol.…”

Section: Preparation Of Pt Colloidal Solutionmentioning

confidence: 99%

Section: Deposition Of Pt Nanoparticles On Graphenementioning

confidence: 99%

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Size Effects of Pt Nanoparticle/Graphene Composite Materials on the Electrochemical Sensing of Hydrogen Peroxide

Sun

Lai

et al. 2015

Journal of Nanomaterials

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“…Graphene has received numerous attentions since it was first detached from graphite through mechanical exfoliation and then used in a variety of applications [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 ]. Among all of the developed processes, chemical vapor deposition (CVD) is always viewed as an effective and powerful method for fabricating large-area and high-quality graphene.…”

Section: Introductionmentioning

confidence: 99%

Low-Temperature CVD Graphene Nanostructures on Cu and Their Corrosion Properties

Huang

Lin

et al. 2018

Materials

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Chemical vapor deposition (CVD) graphene is reported to effectively prevent the penetration of outer factors and insulate the underneath metals, hence achieving an anticorrosion purpose. However, there is little knowledge about their characteristics and corresponding corrosion properties, especially for those prepared under different parameters at low temperatures. Using electron cyclotron resonance chemical vapor deposition (ECR-CVD), we can successfully prepare graphene nanostructures on copper (Cu) at temperatures lower than 600 °C. Scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectroscopy, and potentiodynamic polarization measurements were used to characterize these samples. In simulated seawater, i.e., 3.5 wt.% sodium chloride (NaCl) solution, the corrosion current density of one graphene-coated Cu fabricated at 400 °C can be 1.16 × 10−5 A/cm2, which is one order of magnitude lower than that of pure Cu. Moreover, the existence of tall graphene nanowalls was found not to be beneficial to the protection as a consequence of their layered orientation. These correlations among the morphology, structure, and corrosion properties of graphene nanostructures were investigated in this study. Therefore, the enhanced corrosion resistance in selected cases suggests that the low-temperature CVD graphene under appropriate conditions would be able to protect metal substrates against corrosion.

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“…In recent years, conducting polymers (CPs) have been demonstrated to be suitable host materials for dispersing metallic particles [11][12][13][14]. CP matrices with porous structures, high accessible surface area, low chemical resistance and high stability are attractive and favorable supports for incorporation of the catalyst particles [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Copolymers Based on Indole-6-Carboxylic Acid and 3,4-Ethylenedioxythiophene as Platinum Catalyst Support for Methanol Oxidation

Kuo

Chen

et al. 2015

Catalysts

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Indole-6-carboxylic acid (ICA) and 3,4-ethylenedioxythiophene (EDOT) are copolymerized electrochemically on a stainless steel (SS) electrode to obtain poly(indole-6-carboxylic acid-co-3,4-ethylenedioxythiophene)s (P(ICA-co-EDOT))s. The morphology of P(ICA-co-EDOT)s is checked using scanning electron microscopy (SEM), and the SEM images reveal that these films are composed of highly porous fibers when the feed molar ratio of ICA/EDOT is greater than 3/2. Platinum particles can be electrochemically deposited into the P(ICA-co-EDOT)s and PICA films to obtain P(ICA-co-EDOT)s-Pt and PICA-Pt composite electrodes, respectively. These composite electrodes are further characterized using X-ray photoelectron spectroscopy (XPS), SEM, X-ray diffraction analysis (XRD), and cyclic voltammetry (CV). The SEM result indicates that Pt particles disperse more uniformly into the highly porous P(ICA3-co-EDOT2) fibers (feed molar ratio of ICA/EDOT = 3/2). The P(ICA3-co-EDOT2)-Pt nanocomposite electrode exhibited excellent catalytic activity for the electrooxidation of methanol in these electrodes, which reveals that P(ICA3-co-EDOT2)-Pt nanocomposite electrodes are more promising for application in an electrocatalyst as a support material. OPEN ACCESSCatalysts 2015, 5 1658

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Investigation of the adsorption of size-selected Pt colloidal nanoparticles on high-surface-area graphene powders for methanol oxidation reaction

Cited by 13 publications

References 35 publications

Size Effects of Pt Nanoparticle/Graphene Composite Materials on the Electrochemical Sensing of Hydrogen Peroxide

Size Effects of Pt Nanoparticle/Graphene Composite Materials on the Electrochemical Sensing of Hydrogen Peroxide

Low-Temperature CVD Graphene Nanostructures on Cu and Their Corrosion Properties

Copolymers Based on Indole-6-Carboxylic Acid and 3,4-Ethylenedioxythiophene as Platinum Catalyst Support for Methanol Oxidation

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