Molecular - ion - imprinted chitosan hydrogels for the selective adsorption of silver (I) in aqueous solution / X. Song in Industrial & engineering chemistry research, Vol. 51 N° 34 (Août 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 34 (Août 2012) . - pp. 11261-11265 Titre : Molecular - ion - imprinted chitosan hydrogels for the selective adsorption of silver (I) in aqueous solution Type de document : texte imprimé Auteurs : X. Song, Auteur ; C. Li, Auteur ; R. Xu, Auteur Année de publication : 2012 Article en page(s) : pp. 11261-11265 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Aqueous solution Adsorption Résumé : Chitosan hydrogels were prepared and imprinted by Ag1 with different mass ratios. Compared with the native chitosan hydrogel sample, the optimally imprinted sample (Agim75) presents a significantly enhanced Ag1 adsorption capacity as well as a high selectivity. This is attributed to the specific cavities formed by the template Ag1 ions in the polymer matrix. The effect of the adsorption conditions and desorption process were also studied. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26299452 [article] Molecular - ion - imprinted chitosan hydrogels for the selective adsorption of silver (I) in aqueous solution [texte imprimé] / X. Song, Auteur ; C. Li, Auteur ; R. Xu, Auteur . - 2012 . - pp. 11261-11265. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 34 (Août 2012) . - pp. 11261-11265 Mots-clés : Aqueous solution Adsorption Résumé : Chitosan hydrogels were prepared and imprinted by Ag1 with different mass ratios. Compared with the native chitosan hydrogel sample, the optimally imprinted sample (Agim75) presents a significantly enhanced Ag1 adsorption capacity as well as a high selectivity. This is attributed to the specific cavities formed by the template Ag1 ions in the polymer matrix. The effect of the adsorption conditions and desorption process were also studied. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26299452

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Polyaspartic acid as a green corrosion inhibitor for carbon steel / R. Cui in Materials and corrosion, Vol. 62 N° 4 (Avril 2011)  

Public ISBD [article]  inMaterials and corrosion > Vol. 62 N° 4 (Avril 2011) . - pp. 362–369 Titre : Polyaspartic acid as a green corrosion inhibitor for carbon steel Type de document : texte imprimé Auteurs : R. Cui, Auteur ; N. Gu, Auteur ; C. Li, Auteur Année de publication : 2011 Article en page(s) : pp. 362–369 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Electrochemical impedance spectroscopy Freundlich-type isotherm Green corrosion inhibition Polyaspartic acid Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : The inhibitor effect of the environmentally friendly corrosion inhibitor polyaspartic acid (PASP) on the corrosion of carbon steel in 0.5 M H2SO4 was investigated by weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and scanning electron microscopy (SEM). Polarization curve results clearly reveal the fact that PASP is a good anode-type inhibitor. EIS results confirm its corrosion inhibition ability. The inhibition efficiency increases with increasing PASP concentration, and the maximum inhibition efficiency was 80.33% at 10 °C. SEM reveals that a protective film forms on the surface of the inhibited sample. The adsorption of this inhibitor is found to follow the Freundlich adsorption isotherm. A mechanism is proposed to explain the inhibitory action of the corrosion inhibitor. DEWEY : 620.1 ISSN : 0947-5117 En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905511/abstract [article] Polyaspartic acid as a green corrosion inhibitor for carbon steel [texte imprimé] / R. Cui, Auteur ; N. Gu, Auteur ; C. Li, Auteur . - 2011 . - pp. 362–369. Génie Mécanique Langues : Anglais (eng) in Materials and corrosion > Vol. 62 N° 4 (Avril 2011) . - pp. 362–369 Mots-clés : Electrochemical impedance spectroscopy Freundlich-type isotherm Green corrosion inhibition Polyaspartic acid Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : The inhibitor effect of the environmentally friendly corrosion inhibitor polyaspartic acid (PASP) on the corrosion of carbon steel in 0.5 M H2SO4 was investigated by weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and scanning electron microscopy (SEM). Polarization curve results clearly reveal the fact that PASP is a good anode-type inhibitor. EIS results confirm its corrosion inhibition ability. The inhibition efficiency increases with increasing PASP concentration, and the maximum inhibition efficiency was 80.33% at 10 °C. SEM reveals that a protective film forms on the surface of the inhibited sample. The adsorption of this inhibitor is found to follow the Freundlich adsorption isotherm. A mechanism is proposed to explain the inhibitory action of the corrosion inhibitor. DEWEY : 620.1 ISSN : 0947-5117 En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905511/abstract

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The effect of Ca on corrosion behavior of heat-treated Mg–Al–Zn alloy / Y.-Q. Wang in Materials and corrosion, Vol. 63 N° 6 (Juin 2012)  

Public ISBD [article]  inMaterials and corrosion > Vol. 63 N° 6 (Juin 2012) . - pp. 497–504 Titre : The effect of Ca on corrosion behavior of heat-treated Mg–Al–Zn alloy Type de document : texte imprimé Auteurs : Y.-Q. Wang, Auteur ; M.-Z. Li, Auteur ; C. Li, Auteur Année de publication : 2012 Article en page(s) : pp. 497–504 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Ca  corrosion  magnesium alloy  microstructure Résumé : The effect of 0.5, 1.0, and 1.5 wt% Ca additions on the microstructure and corrosion resistance of the heat-treated Mg–Al–Zn alloy was investigated. Addition of 0.5 wt% Ca did not form any new phase but suppressed the discontinuous precipitation of the β-Mg17Al12 phase by being dissolved in both the second phase and magnesium matrix. In the materials containing higher amounts of Ca, however, metallographic investigation shows that Ca added to Mg–Al–Zn can obviously decrease the size of β-Mg17Al12 and forms Al4Ca intermetallic compounds in the shape of bone-like morphology. The corrosion tests used include constant immersion technique, and potentiodynamic polarization experiments and salt spray test. Surface examination and analytical studies were carried out using optical and scanning electron microscopy, EDX, and XRD. The results of corrosion tests show that magnesium alloy Mg–Al–Zn with 1.0 wt% Ca addition has the best corrosion resistance behavior. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005957/abstract [article] The effect of Ca on corrosion behavior of heat-treated Mg–Al–Zn alloy [texte imprimé] / Y.-Q. Wang, Auteur ; M.-Z. Li, Auteur ; C. Li, Auteur . - 2012 . - pp. 497–504. Génie mécanique Langues : Anglais (eng) in Materials and corrosion > Vol. 63 N° 6 (Juin 2012) . - pp. 497–504 Mots-clés : Ca  corrosion  magnesium alloy  microstructure Résumé : The effect of 0.5, 1.0, and 1.5 wt% Ca additions on the microstructure and corrosion resistance of the heat-treated Mg–Al–Zn alloy was investigated. Addition of 0.5 wt% Ca did not form any new phase but suppressed the discontinuous precipitation of the β-Mg17Al12 phase by being dissolved in both the second phase and magnesium matrix. In the materials containing higher amounts of Ca, however, metallographic investigation shows that Ca added to Mg–Al–Zn can obviously decrease the size of β-Mg17Al12 and forms Al4Ca intermetallic compounds in the shape of bone-like morphology. The corrosion tests used include constant immersion technique, and potentiodynamic polarization experiments and salt spray test. Surface examination and analytical studies were carried out using optical and scanning electron microscopy, EDX, and XRD. The results of corrosion tests show that magnesium alloy Mg–Al–Zn with 1.0 wt% Ca addition has the best corrosion resistance behavior. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005957/abstract

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