Electrochemical Performance of Pt/NC and Pt/rGO for Methanol Oxidation in Acid Media

Ferrer, David Macias; Melo-Banda, J.A.; Silva–Rodrigo, R.; Gómez, July; García, Ulises Páramo; Vicente, P Del Angel; Lam-Maldonado, Mayda

doi:10.1149/08401.0041ecst

Cited by 5 publications

(3 citation statements)

References 27 publications

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“…However several hindering facts still have to be overcome. In the work by Macias-Ferrer et al a micro/nanostructured pyrolytic carbon (MNC) was prepared via a nanocasting method using SBA-15 as a hard template and refined sugar as a carbon precursor [48]. The synthesized carbon material served as a support for PtCo (atomic ratio 52:48) nanoparticles.…”

Section: Hard Template Synthesis and Applications Of Mesostructured Cmentioning

confidence: 99%

Hard Template Synthesis of Nanomaterials Based on Mesoporous Silica

et al. 2018

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Diverse hard template synthetic methodologies are being employed for the synthesis of mesostructured metal oxide and carbon nanomaterials, with the application of mesoporous silica as the hard template. We describe the main differences and advantages/disadvantages between the soft and hard templated synthetic routes, provide an overview of the synthesis and characteristics of different templating mesoporous silica nanomaterials and discuss on practical aspects of the hard template synthetic methodology for obtaining various metal-oxide and carbon-based mesostructured nanomaterials. Also, we cover various recent applications of thus constructed mesostructured metal oxide and carbon nanomaterials, such as sensing, energy storage, fuel cells, and catalysis, which demonstrate the highly promising character of the hard template methodology for the synthesis of a new generation of nanomaterials with broad application potential.

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Section: Hard Template Synthesis and Applications Of Mesostructured Cmentioning

confidence: 99%

Hard Template Synthesis of Nanomaterials Based on Mesoporous Silica

et al. 2018

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“…mg -1 ) > Pt/C (180 mA.mg -1 ). The enhanced electron transport at the electrode-electrolyte intersection along with hierarchal structure are the main reasons for improved electrochemical activity [41].…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic Performance of NiNH2BDC MOF Based Composites with rGO For Methanol Oxidation Reaction

Yaqoob

Nооr

Iqbal

et al. 2021

Preprint

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Present work comprehensively investigated the electrochemical response of Nickel-2 Aminoterephthalic acid metal organic framework (NiNH2BDC) and its reduced graphitic carbon (rGO) based hybrids for methanol (CH3OH) oxidation reaction (MOR) in an alkaline environment. In thorough analysis of solvothermally synthesized Metal-organic frameworks (MOFs) and its reduced graphitic carbon based hybrids, functional groups detection was performed by FTIR, morphological study by SEM, crystal structure analysis via XRD, and elemental analysis through XPS while electrochemical testing was accomplished by chronoamperometry (CA), cyclic voltametric method (CV), electrochemically active surface area (EASA), Tafel slope (b), Electron impedance spectroscopy (EIS), mass activity, and roughness factor. Among all the fabricated composites, NiNH2BDC MOF/5 wt % rGO hybrid by possessing auspicious current density (j) of 267.7 mA / cm2 at 0.699 V (vs Hg/HgO), a Tafel slope value of 60.8 mV.dec-1, EASA value of 15.7 cm2, and by exhibiting resistance of 13.26 Ω in a 3 M CH3OH / 1M NaOH solution displays grander electrocatalytic activity as compared to state-of-the-art platinum-based electrocatalysts.

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“…It was found that the characteristic peak of monoclinic-WO 3 was stronger than hexagonal-WO 3 , which is different from the W-Pt/MMT 375 showing that the characteristic peaks of hexagonal-WO 3 was stronger. The W-Pt/MMT 375 exhibited XRD peaks located at 2Ɵ degrees of 39°, 46°and 68° indicating the characteristic peaks of Pt [47].…”

Section: Discussionmentioning

confidence: 99%

Esterification of ethanol and lactic acid with WO3 on montmorillonite catalysts for ethyl lactate production

Mukjinda¹

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This research aims to study the characteristics, catalytic properties and stability of tungsten oxide (13.5 wt%) supported on montmorillonite (W/MMT) catalysts prepared by using three different calcination temperatures including 375 (W/MMT375), 475 (W/MMT475) and 575 (W/MMT 575) °C. All catalysts were examined in esterification of ethanol and lactic acid at 80 °C. Characterization studies showed that the W/MMT475 catalyst exhibited the highest acidity, followed by W/MMT375 and W/MMT575, respectively. However, from the surface area result, W/MMT375 exhibited the highest surface area, followed by W/MMT475 and W/MMT575, respectively. When all catalysts were tested in esterification of ethanol and lactic acid, it revealed that the W/MMT375 catalyst was found to have the highest yield of ethyl lactate around 43.2 %. Then, the suitable catalyst (W/MMT375) was further improved by adding two different promoters such as zirconium (W-Zr/MMT375) and platinum (W-Pt/MMT375). Based on NH3 temperature-programmed desorption, it indicated that the W-Pt/MMT375 catalyst had the highest acidity. When two catalysts were tested in esterification of ethanol and lactic acid, the result showed that the W-Pt/MMT 375 catalyst exhibited higher yield of ethyl lactate (ca.48 %) than W-Zr/MMT 375. Finally, the catalytic stability of the catalysts including W/MMT 375 and W-Pt/MMT 375 was performed around 3 cycles in esterification of ethanol and lactic acid. It was found that the yield of ethyl lactate for each reuse was decreased. The characteristics of the spent W/MMT 375 and W-Pt/MMT 375 catalysts after each cycle up on the catalyst external structure, which is perhaps related to textural properties of catalyst did not affect by the reaction test within 3 cycles of reuse. However, the decrease of moderate to strong acid site related with the catalytic activity was significant.

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Electrochemical Performance of Pt/NC and Pt/rGO for Methanol Oxidation in Acid Media

Cited by 5 publications

References 27 publications

Hard Template Synthesis of Nanomaterials Based on Mesoporous Silica

Hard Template Synthesis of Nanomaterials Based on Mesoporous Silica

Electrocatalytic Performance of NiNH2BDC MOF Based Composites with rGO For Methanol Oxidation Reaction

Esterification of ethanol and lactic acid with WO3 on montmorillonite catalysts for ethyl lactate production

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