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Fabrication of (Calcein – ZnS)n ordered ultrathin films on the basis of layered double hydroxide and its ethanol sensing behavior / Ying Guo in Industrial & engineering chemistry research, Vol. 51 N° 26 (Juillet 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 26 (Juillet 2012) . - pp. 8966-8973 Titre : Fabrication of (Calcein – ZnS)n ordered ultrathin films on the basis of layered double hydroxide and its ethanol sensing behavior Type de document : texte imprimé Auteurs : Ying Guo, Auteur ; Yaping Xiao, Auteur ; Limin Zhang, Auteur Année de publication : 2012 Article en page(s) : pp. 8966-8973 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Ultrathin  films  N  order Résumé : (Calcein―ZnS)n ultrathin films (UTFs) were fabricated through a two-step procedure including the layer-by-layer (LBL) assembly of calcein and exfoliated Zn2Al layered double hydroxide (LDH) nanosheets, followed by an in situ gas/solid reaction with H2S. The assembly process of calcein and exfoliated LDH was monitored by UV―vis absorption measurements to get a stepwise and regular growth of the (calcein―LDH)n UTFs upon increasing the deposited cycles. By an in situ gas―solid reaction with H2S, the resulting sulfurization derivatives denoted as (calcein―ZnS), UTFs were obtained. The resulting (calcein―ZnS)30 UTF possesses high ethanol sensing performance (response value is 8.9-100 ppm ethanol) at relatively low working temperature (90 °C). The LBL assembly process and chemical conversion technique based on Zn2Al―LDH combine the functional organic molecules and inorganic semiconductor, which enables us to develop innovative composite materials with adjustable compositions for a broad range of applications. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26107452 [article] Fabrication of (Calcein – ZnS)n ordered ultrathin films on the basis of layered double hydroxide and its ethanol sensing behavior [texte imprimé] / Ying Guo, Auteur ; Yaping Xiao, Auteur ; Limin Zhang, Auteur . - 2012 . - pp. 8966-8973. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 26 (Juillet 2012) . - pp. 8966-8973 Mots-clés : Ultrathin  films  N  order Résumé : (Calcein―ZnS)n ultrathin films (UTFs) were fabricated through a two-step procedure including the layer-by-layer (LBL) assembly of calcein and exfoliated Zn2Al layered double hydroxide (LDH) nanosheets, followed by an in situ gas/solid reaction with H2S. The assembly process of calcein and exfoliated LDH was monitored by UV―vis absorption measurements to get a stepwise and regular growth of the (calcein―LDH)n UTFs upon increasing the deposited cycles. By an in situ gas―solid reaction with H2S, the resulting sulfurization derivatives denoted as (calcein―ZnS), UTFs were obtained. The resulting (calcein―ZnS)30 UTF possesses high ethanol sensing performance (response value is 8.9-100 ppm ethanol) at relatively low working temperature (90 °C). The LBL assembly process and chemical conversion technique based on Zn2Al―LDH combine the functional organic molecules and inorganic semiconductor, which enables us to develop innovative composite materials with adjustable compositions for a broad range of applications. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26107452

Preparation of hydrolyzate of hogwash oil (HHO) and its application in separating diaspore from kaolinite / Wei Sun in Minerals engineering, Vol. 23 N° 9 (Août 2010) 

Public ISBD [article]  in Minerals engineering > Vol. 23 N° 9 (Août 2010) . - pp. 670–675 Titre : Preparation of hydrolyzate of hogwash oil (HHO) and its application in separating diaspore from kaolinite Type de document : texte imprimé Auteurs : Wei Sun, Auteur ; Kui Ouyang, Auteur ; Limin Zhang, Auteur Année de publication : 2011 Article en page(s) : pp. 670–675 Note générale : Génie Minier Langues : Anglais (eng) Mots-clés : Recycling  Flotation  collectors  Oxide  ores  Mineral  processing Résumé : Hydrolyzate of hogwash oil (HHO) was prepared at ambient pressure using hogwash oil that was collected from the dietary industry as a raw material by means of non-pressurized multistage hydrolyzation. Before hydrolyzation, the collected hogwash oil was subject to pre-treatment that included deposition edulcoration, acidification degumming and deodorization by digestion as well as vacuum dewatering. Components of the synthesized products were detected by gas chromatography and the results indicated that unsaturated fatty acids are the major components. Using HHO as a collector, the flotation behavior of diaspore and kaolinite was investigated. The reaction mechanisms of diaspore and kaolinite with HHO are discussed based on a zeta potential test. The results showed that a concentrate with a mass ratio of Al2O3 to SiO2 of 14.42 and an Al2O3 recovery of 81.80% can be obtained at a feed mass ratio of Al2O3 to SiO2 of 5. This indicated that the HHO is a potential collector for separating diaspore from aluminosilicate minerals in bauxite. The results also suggested a possible way to reuse discarded hogwash oil to avoid environmental pollutio DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S0892687510000907 [article] Preparation of hydrolyzate of hogwash oil (HHO) and its application in separating diaspore from kaolinite [texte imprimé] / Wei Sun, Auteur ; Kui Ouyang, Auteur ; Limin Zhang, Auteur . - 2011 . - pp. 670–675. Génie Minier Langues : Anglais (eng) in Minerals engineering > Vol. 23 N° 9 (Août 2010) . - pp. 670–675 Mots-clés : Recycling  Flotation  collectors  Oxide  ores  Mineral  processing Résumé : Hydrolyzate of hogwash oil (HHO) was prepared at ambient pressure using hogwash oil that was collected from the dietary industry as a raw material by means of non-pressurized multistage hydrolyzation. Before hydrolyzation, the collected hogwash oil was subject to pre-treatment that included deposition edulcoration, acidification degumming and deodorization by digestion as well as vacuum dewatering. Components of the synthesized products were detected by gas chromatography and the results indicated that unsaturated fatty acids are the major components. Using HHO as a collector, the flotation behavior of diaspore and kaolinite was investigated. The reaction mechanisms of diaspore and kaolinite with HHO are discussed based on a zeta potential test. The results showed that a concentrate with a mass ratio of Al2O3 to SiO2 of 14.42 and an Al2O3 recovery of 81.80% can be obtained at a feed mass ratio of Al2O3 to SiO2 of 5. This indicated that the HHO is a potential collector for separating diaspore from aluminosilicate minerals in bauxite. The results also suggested a possible way to reuse discarded hogwash oil to avoid environmental pollutio DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S0892687510000907