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題 名 | 竹炭固載鉬釩磷酸鹽複合物製備及抗菌活性評估=Preparation and Antibacterial Activity of Bamboo Charcol/Polyoxometalate Composites |
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作 者 | 楊福助; 吳國輝; 林文博; 黃仁偉; 胡明寬; 洪登南; | 書刊名 | 黃埔學報 |
卷 期 | 55(1) 2008.10[民97.10] |
頁 次 | 頁27-38 |
分類號 | 440.34 |
關鍵詞 | 鉬釩磷酸鹽; 竹炭; 抗菌; 最低抑菌濃度; 最低殺菌濃度; Polyoxometalate; Bamboo charcoal; Antibacterial; Minimum inhibitory concentrations; MICs; Minimum bactericidal concentrations; MBCs; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究主要是探討竹炭(Bamboo Charcoal, BC)固載鉬釩磷酸鹽(H5PV2Mo10O40, POM)的製備。以EtOH為溶劑,POM去質子化且容易經由濕式沉浸法固載在竹炭上。竹炭固載鉬釩磷酸鹽複合物(BC/POM)的結構和特性經由IR、UV-Vis、BET和31P NMR來探討。複合物的SEM及TEM圖顯示出POM顆粒分布在竹炭上,TEM揭示POM顆粒粒徑小於30 nm。這些技術顯示POM 經由沉浸方式固著於竹炭表面,POM的高負載量造成竹炭比表面積遞減,可能由於沉浸過程使竹炭孔洞阻塞或結構改變,BC/POM表面之POM含量仰賴於最初POM的起始濃度,POM含量越高其在竹炭上之比表面積越小。BC/POM複合物粉末的抗菌效用經由最低抑菌濃度、最低殺菌濃度及平板計數法檢驗方式,結果均展現出優異的抗菌性質。 |
英文摘要 | This paper presents studies on the immobilization of the polyoxometalate [H5PV2Mo10O40] on bamboo charcoal . In polar solvents, POM is deprotonated and could be easily immobilized by wet impregnation of the modified silica using EtOH as the solvent. The physical properties of the samples were examined using IR, UV–Vis spectroscopy, BET, 31P NMR. Scanning and transmission electron microscopy (SEM and TEM) of the composites show uniform POM particles distribution on the BC matrix (BC/POM). The POM particle size was found to be less than 30 nm based on TEM. These techniques indicated that the POM is intact on the surface after impregnation. High loadings of POM caused a decrease in the surface area and pore volume of the solid, presumably due to both pore blockage and restructuring of the BC during wet impregnation. The POM content and the surface morphologies of the BC/POM composites were dependent on initial concentration of POM, and more POM contents, smaller specific surface areas were obtained on BC. The antibacterial effects of BC/POM composite powders against bacteria were examined by the minimum inhibitory concentrations (MICs), minimum bactericidal concentrations (MBCs) and plate counting method, showing an excellent antibacterial performance. |
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