Electrochemical studies of the adsorption of aniline on a smooth polycrystalline platinum electrode

Ficicioglu, F; Kuliyev, Sadig; Kadırgan, F.

doi:10.1016/0022-0728(95)04476-0

Cited by 4 publications

(3 citation statements)

References 8 publications

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“…Thus the perpendicular orientation of pABA, pMBA, and aniline were examined in the ab initio calculations. Aniline does not have a carboxylic acid group to solvate and previous experimental studies have determined that its benzene ring was oriented parallel to the metal surface. , Therefore, ab initio calculations were also done with aniline oriented parallel to the surface.…”

Section: Quantum Chemical Calculationsmentioning

confidence: 99%

Adsorbate-Induced Quenching of Hot Electrons in Gold Core−Shell Nanoparticles

et al. 2001

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We have investigated the effect of molecular adsorbates on the ultrafast electron dynamics in nanoshell particles. These nanoparticles consist of a thin gold shell surrounding a gold sulfide core. Pump-probe transmission measurements at 1.5 eV on unmodified nanoshells in aqueous solution yield an electron relaxation lifetime of ∼2.7 ps. The lifetime decreased with the adsorption of p-aminobenzoic acid (∼1.7 ps) or aniline (∼1.9 ps) on the nanoshells. With adsorbed p-mercaptobenzoic acid or n-propylamine, electron thermalization occurred in ∼2.4 or ∼2.8 ps, respectively. Surface-enhanced Raman signals were detected from the aromatic molecules, confirming their adsorption on the nanoshells. Density functional theory calculations indicate that the molecules providing the strongest modification of the dynamics possess the largest induced dipole moments near a metal surface. This suggests that the adsorbate-induced perturbation of the nanoshell electron dynamics is primarily electronic in nature.

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Section: Quantum Chemical Calculationsmentioning

confidence: 99%

Adsorbate-Induced Quenching of Hot Electrons in Gold Core−Shell Nanoparticles

et al. 2001

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“…After H 2 gas produced by hydrolysis of SBH flow through electrolyte, changes in the electrolyte solution of electrode surface analyzed by using program 1 and obtained results are shown in Fig.5. In this case, the hydrogen adsorption charge Q(H) compared with the hydrogen adsorption charge of pure electrolyte Q(H o )as follows [12,13]:…”

Section: Analysis Of the Purity Of The Hydrogen Produced In The Hydromentioning

confidence: 99%

“…For example, it is well known that Pt surface is more easily poisoned by gases such as H 2 S, CO, and NH 3 [10,11]. Beside, a variety of organic compounds, such as alcohols, aldehydes, organic acids, nitrogenous organic compounds and aromatic compounds can be adsorbed simply on the Pt surface [12,13]. Therefore, catalysts for PEM fuel cells has to be activated after the catalysts poisoned [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Purity Investigation of Hydrogen Produced by Hydrolysis of Sodium Borohydride via Phosphoric Acid Process

Kuliyev¹,

Fettah²,

Timurkutluk³

2017

Chemical Problems

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In this study, H 2 gas produced by the hydrolysis of sodium borohydride (SBH) in an alkaline medium via phosphoric acid catalyst for PEM fuel cell applications was analyzed. The purity of H 2 gas investigated by electrocatalytic method. High purity 0.5M H 2 SO 4 solution with immersed smooth surface Pt electrodesaturated with H 2 gas produced by hydrolysis process. By considering the results of electrochemical pulse techniques and CV (cyclic voltammetry) methods on the smooth surface of Pt electrode, the purity degree of gaseous H 2 determined.

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