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首页> 外文期刊>Materials Research Bulletin >Preparation and characterization of vanadia-titania mixed oxide for immobilization of Serratia rubidaea CCT 5732 and Klebsiella marcescens bacteria
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Preparation and characterization of vanadia-titania mixed oxide for immobilization of Serratia rubidaea CCT 5732 and Klebsiella marcescens bacteria

机译：固定化红腐沙雷氏菌CCT 5732和粘菌克雷伯氏菌的钒钛复合氧化物的制备及表征

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摘要

Vanadia-titania mixed oxide was synthesized by sol-gel method and characterized by several techniques. Texturally, it is formed by mesopores and presents high-specific surface area and controlled porosity. Scanning electron microscopy revealed that vanadium is homogeneously distributed in the material. Structurally, it was possible to identify characteristic V=O stretching bands by IR. The analysis of X-ray diffraction showed that the material, particularly vanadium, is highly dispersed. Application experiments were carried out through the immobilization of Serratia rubidae CCT 5732 and Klebsiella marcescens bacteria by adsorption on the surface of mixed oxide. The micrographies revealed that the bacteria were adsorbed on the entire support, with average surface densities of 8.55 × 10~(11) cells/m~2 (Serratia rubidae CCT 5732) and 3.40 × 10~(11) cells/m~2 (K. marcescens).
机译：钒钛复合氧化物是通过溶胶-凝胶法合成的，并通过几种技术进行了表征。从质地上讲，它是由中孔形成的，具有较高的比表面积和受控的孔隙率。扫描电子显微镜显示钒在材料中均匀分布。在结构上，可以通过IR识别特征性V = O拉伸带。 X射线衍射分析表明该材料，特别是钒，是高度分散的。应用实验是通过吸附在混合氧化物表面上来固定红血天链菌CCT 5732和粘质克雷伯氏菌的方法。显微照片显示，细菌被吸附在整个载体上，平均表面密度为8.55×10〜（11）个细胞/ m〜2（红粘菌CCT 5732）和3.40×10〜（11）个细胞/ m〜2（ K. marcescens）。

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