Documents disponibles écrits par cet auteur

Controllable synthesis of hexagonal, bullet - like ZnO microstructures and nanorod arrays and their photocatalytic property / Limin Song in Industrial & engineering chemistry research, Vol. 51 N° 13 (Avril 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 13 (Avril 2012) . - pp. 4922–4926 Titre : Controllable synthesis of hexagonal, bullet - like ZnO microstructures and nanorod arrays and their photocatalytic property Type de document : texte imprimé Auteurs : Limin Song, Auteur ; Shujuan Zhang, Auteur ; Xiaoqing Wu, Auteur Année de publication : 2012 Article en page(s) : pp. 4922–4926 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Photocatalytic  Property  Microstructure Résumé : Hexagonal, bullet-like ZnO microstructures and nanorod arrays have been prepared successfully by a simple hydrothermal method without surfactants. The structure and composition of the samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectrum (EDS), infrared spectrum (IR), and UV–vis diffusive reflectance spectrum (UV–vis). The as-synthesized bullet-like ZnO has hexagonal microstructures with an average diameter of about 10 μm and a length of 30 μm. The obtained ZnO nanorod arrays are highly oriented. Their average diameter is around 50–100 nm, and their length is about 1 μm. In the present work, the effect of concentration, heating temperature, and time on the morphology of ZnO structures was studied experimentally, and their formation was discussed in detail. The photocatalytic degradation of methylene blue (MB) was also investigated. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie202253a [article] Controllable synthesis of hexagonal, bullet - like ZnO microstructures and nanorod arrays and their photocatalytic property [texte imprimé] / Limin Song, Auteur ; Shujuan Zhang, Auteur ; Xiaoqing Wu, Auteur . - 2012 . - pp. 4922–4926. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 13 (Avril 2012) . - pp. 4922–4926 Mots-clés : Photocatalytic  Property  Microstructure Résumé : Hexagonal, bullet-like ZnO microstructures and nanorod arrays have been prepared successfully by a simple hydrothermal method without surfactants. The structure and composition of the samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectrum (EDS), infrared spectrum (IR), and UV–vis diffusive reflectance spectrum (UV–vis). The as-synthesized bullet-like ZnO has hexagonal microstructures with an average diameter of about 10 μm and a length of 30 μm. The obtained ZnO nanorod arrays are highly oriented. Their average diameter is around 50–100 nm, and their length is about 1 μm. In the present work, the effect of concentration, heating temperature, and time on the morphology of ZnO structures was studied experimentally, and their formation was discussed in detail. The photocatalytic degradation of methylene blue (MB) was also investigated. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie202253a

Effect of CdS distribution on the photocatalytic performance of resin - CdS nanocomposites / Yingmei Xie in Chemical engineering journal, Vol. 174 N° 1 (Octobre 2011) 

Public ISBD [article]  in Chemical engineering journal > Vol. 174 N° 1 (Octobre 2011) . - pp. 351–356 Titre : Effect of CdS distribution on the photocatalytic performance of resin - CdS nanocomposites Type de document : texte imprimé Auteurs : Yingmei Xie, Auteur ; Shujuan Zhang, Auteur ; Bingcai Pan, Auteur Année de publication : 2012 Article en page(s) : pp. 351–356 Note générale : Génie chimique Langues : Anglais (eng) Mots-clés : Shell  thickness  Shell  density  Rhodamin  B  D201-CdS Résumé : A nanocomposite, D201-CdS, made by depositing CdS nanoparticles on a resin support (D201) was found to be a promising photocatalyst with visible light response. To elucidate the structure-activity relationship, a set of D201-CdS nanocomposites varying in CdS amount and distribution were prepared by adjusting the concentration of sulfide anion and the precipitation time. The maximum compressive strength of the nanocomposites increased first with the loading of CdS and then declined with the further increase of CdS. There was a valid shell thickness of CdS due to the limitation of visible light in penetration through the resin matrix. Within a certain range of shell thickness, the increase of shell density of CdS would be favorable for the purpose of photodegradation. The shell density could be easily tuned by adjusting the fabrication condition employed in this work, which is an important merit for the potential production and application. ISSN : 1385-8947 En ligne : http://www.sciencedirect.com/science/article/pii/S1385894711010643 [article] Effect of CdS distribution on the photocatalytic performance of resin - CdS nanocomposites [texte imprimé] / Yingmei Xie, Auteur ; Shujuan Zhang, Auteur ; Bingcai Pan, Auteur . - 2012 . - pp. 351–356. Génie chimique Langues : Anglais (eng) in Chemical engineering journal > Vol. 174 N° 1 (Octobre 2011) . - pp. 351–356 Mots-clés : Shell  thickness  Shell  density  Rhodamin  B  D201-CdS Résumé : A nanocomposite, D201-CdS, made by depositing CdS nanoparticles on a resin support (D201) was found to be a promising photocatalyst with visible light response. To elucidate the structure-activity relationship, a set of D201-CdS nanocomposites varying in CdS amount and distribution were prepared by adjusting the concentration of sulfide anion and the precipitation time. The maximum compressive strength of the nanocomposites increased first with the loading of CdS and then declined with the further increase of CdS. There was a valid shell thickness of CdS due to the limitation of visible light in penetration through the resin matrix. Within a certain range of shell thickness, the increase of shell density of CdS would be favorable for the purpose of photodegradation. The shell density could be easily tuned by adjusting the fabrication condition employed in this work, which is an important merit for the potential production and application. ISSN : 1385-8947 En ligne : http://www.sciencedirect.com/science/article/pii/S1385894711010643

Graphitic C3N4 photocatalyst for esterification of benzaldehyde and alcohol under visible light radiation / Limin Song in Industrial & engineering chemistry research, Vol. 51 N° 28 (Juillet 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 28 (Juillet 2012) . - pp. 9510-9514 Titre : Graphitic C3N4 photocatalyst for esterification of benzaldehyde and alcohol under visible light radiation Type de document : texte imprimé Auteurs : Limin Song, Auteur ; Shujuan Zhang, Auteur ; Xiaoqing Wu, Auteur Année de publication : 2012 Article en page(s) : pp. 9510-9514 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Visible  radiation  Esterification  Photocatalysis  Catalyst Résumé : The reaction of alcohols and carboxylic acids catalyzed by acids is the traditional method used to prepare esters in the chemical industry. In this study, we report the synthesis of active graphitic carbon nitride (g-C3N4) that may be used in the one-step reaction between benzaldehyde and alcohol to promote the selective formation of esters under visible light irradiation. Compared with the reaction carried out without illumination, g-C3N4 showed obvious improvements in ester formation. The presence of tin dioxide can also contribute to the formation of esters under visible light irradiation. The use of g-C3N4 for the esterification of various alcohols was explored, and the catalyst showed promising results. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26163287 [article] Graphitic C3N4 photocatalyst for esterification of benzaldehyde and alcohol under visible light radiation [texte imprimé] / Limin Song, Auteur ; Shujuan Zhang, Auteur ; Xiaoqing Wu, Auteur . - 2012 . - pp. 9510-9514. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 28 (Juillet 2012) . - pp. 9510-9514 Mots-clés : Visible  radiation  Esterification  Photocatalysis  Catalyst Résumé : The reaction of alcohols and carboxylic acids catalyzed by acids is the traditional method used to prepare esters in the chemical industry. In this study, we report the synthesis of active graphitic carbon nitride (g-C3N4) that may be used in the one-step reaction between benzaldehyde and alcohol to promote the selective formation of esters under visible light irradiation. Compared with the reaction carried out without illumination, g-C3N4 showed obvious improvements in ester formation. The presence of tin dioxide can also contribute to the formation of esters under visible light irradiation. The use of g-C3N4 for the esterification of various alcohols was explored, and the catalyst showed promising results. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26163287