A thermogravimetric analysis/mass spectroscopy study of the thermal and chemical stability of carbon in the Pt/C catalytic system

Sellin, Rémy; Clacens, Jean‐Marc; Coutanceau, Christophe

doi:10.1016/j.carbon.2010.02.034

Cited by 58 publications

(52 citation statements)

References 37 publications

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“…This trend is consistent with previous reports for conversion of Pt(cod)me 2 on carbon aerogel supports, wherein it was shown that the Pt particle size for chemical conversion was about twice that for thermal conversion [21]. This substantial increase in the particle size can perhaps be attributed to the precursor conversion chemistry [48], which results in the formation of surface species that have a higher mobility in the presence of hydrogen. Another possibility is that, in the presence of H 2 , the precursor molecules decompose and the resulting Pt adatoms migrate to the pre-existing Pt nuclei; whereas for conversion in the presence of N 2 , the precursor molecules migrate and decompose at the Pt nuclei.…”

Section: Discussionsupporting

confidence: 91%

Electrochemical performance of fuel cell catalysts prepared by supercritical deposition: Effect of different precursor conversion routes

Bozbağ¹,

Gümüşoğlu²,

Yılmaztürk³

et al. 2015

The Journal of Supercritical Fluids

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Section: Discussionsupporting

confidence: 91%

Electrochemical performance of fuel cell catalysts prepared by supercritical deposition: Effect of different precursor conversion routes

Bozbağ¹,

Gümüşoğlu²,

Yılmaztürk³

et al. 2015

The Journal of Supercritical Fluids

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“…For instance MD simulations are capable of addressing the catalytic material degradation (dissolution, Ostwald ripening, aggregation, detachment, etc.) in close connection to the experiment [87][88][89][90][91]. …”

Section: Future Perspectivesmentioning

confidence: 83%

Molecular dynamics simulations of supported metal nanocatalyst formation by plasma sputtering

Brault

Neyts

2015

Catalysis Today

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a b s t r a c tMagnetron sputtering is a widely used physical vapor deposition technique for deposition and formation of nanocatalyst thin films and clusters. Nevertheless, so far only few studies investigated this formation process at the fundamental level. We here review atomic scale molecular dynamics simulations aimed at elucidating the nanocatalyst growth process through magnetron sputtering. We first introduce the basic magnetron sputtering background and machinery of molecular dynamics simulations, and then describe the studies conducted in this field so far. We also present a perspective view on how the field may be developed further.

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“…In Fig. 1, first mass loss is seen in the temperature between 40 and 150°C due to the dehydration of dWR, proving that dWR could easily hold moisture in the air (approximately 5 % of its own weight) and/or be physisorbed water present at first in the pores of dWR (Sellin et al 2010). Between 150 and 330°C, the highest weight loss is observed with about 45 %, which shows the thermal decompositions of lignin, cellulose, pectin, and hemicelluloses.…”

Section: Thermogravimetric Analysismentioning

confidence: 87%

Adsorption of Methylene Blue by an Efficient Activated Carbon Prepared from Citrullus lanatus Rind: Kinetic, Isotherm, Thermodynamic, and Mechanism Analysis

Üner

Geçgel

Bayrak

2016

Water Air Soil Pollut

107

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By using the activated carbon obtained from Citrullus lanatus rind by zinc chloride activation, methylene blue (MB) removal from aqueous solutions was studied, and the adsorption mechanism was solved through Weber-Morris intraparticle diffusion model, Bangham model, Boyd model, Fourier transform infrared spectra, and scanning electron microscopy. The effects of adsorption parameters (adsorbent concentration, temperature, initial dye concentration, and pH) were investigated. The equilibrium data of MB adsorption were described by applying the Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich isotherm models. The obtained results from adsorption isotherms indicated that Langmuir model is the bestfitted model with the maximum adsorption capacities of 231.48, 243.90, 244.50, and 259.74 mg/g at 25, 35, 45, and 55°C, respectively. The analysis of the kinetic data by pseudo-first-order, pseudo-second-order, and Elovich models displayed that MB adsorption followed pseudo-second-order model. Also, the date obtained from intraparticle diffusion model, Bangham model, and Boyd model presented that intraparticle diffusion, pore diffusion, and film diffusion played significant role in MB adsorption. The thermodynamic studies demonstrated that MB adsorption onto the activated carbon obtained from C. lanatus rind was physical, spontaneous, feasible, and endothermic. Thus, the activated carbon prepared from C. lanatus rind has been an efficient adsorbent for MB removal from an aqueous solution.

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A thermogravimetric analysis/mass spectroscopy study of the thermal and chemical stability of carbon in the Pt/C catalytic system

Cited by 58 publications

References 37 publications

Electrochemical performance of fuel cell catalysts prepared by supercritical deposition: Effect of different precursor conversion routes

Electrochemical performance of fuel cell catalysts prepared by supercritical deposition: Effect of different precursor conversion routes

Molecular dynamics simulations of supported metal nanocatalyst formation by plasma sputtering

Adsorption of Methylene Blue by an Efficient Activated Carbon Prepared from Citrullus lanatus Rind: Kinetic, Isotherm, Thermodynamic, and Mechanism Analysis

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