期刊
JOURNAL OF INORGANIC BIOCHEMISTRY
卷 199, 期 -, 页码 -出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jinorgbio.2019.110788
关键词
Polyoxometalate; Chemical toxicant; Biological toxicant; Antibacterial effect; 2-Chloroethylethylsulfide
资金
- Ministry of Science and Technology of Taiwan [MOST 106-2221-E-606-014]
Nanohybrid membranes based on the Keggin-type polyoxometalate (POM) H5PV2Mo10O40 and aminosilane-modified silicate (Ormosil and Ormosil(NR4+Cl-)) hybrids were synthesized as a new barrier to protect against simulants of chemical and biological toxicant. The P-31 NMR and XPS results indicated that POM was bound to the Ormosil and Ormosil(NR4+Cl-) hybrids after impregnation. The antibacterial effects of the hybrids and hybrid-impregnated fabrics against Gram-negative and Gram-positive bacteria were investigated with zone of inhibition, minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC) and plate-counting method. The MIC/MBC values of Ormosil(NR4+Cl-)/POM and Ormosil/POM against bacteria were 0.267/2.67 and 2.67/26.7, respectively, and the percentage reduction of bacteria was approximately 100% after 20 laundry cycles of their fabrics. The reaction products and mechanisms of the adsorptive degradation of 2-chloroethylethylsulfide (CEES) by hybrids were investigated with C-13 NMR. The results of this study showed that POM-doped Ormosil systems are capable of destroying bacteria and CEES.
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