| 载Ag羟基磷灰石/硅藻土-高岭土复合陶瓷的制备及抗菌性能 |
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| 引用本文： | 邓城,漆小鹏,李倩,宋秋华,邓扬悟.载Ag羟基磷灰石/硅藻土-高岭土复合陶瓷的制备及抗菌性能[J].复合材料学报,2016,33(11):2591-2599. |
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| 作者姓名： | 邓城 漆小鹏 李倩 宋秋华 邓扬悟 |
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| 作者单位： | 1.江西理工大学 材料科学与工程学院, 赣州 341000; |
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| 基金项目： | 江西理工大学科研基金重点课题(NSFJ2014-K10) |
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| 摘 要： | 为通过滤除水中微生物和杂质而改善水质，首先采用一步共沉淀法合成了载Ag羟基磷灰石（Ag-HA）抗菌粉体，并将其与硅藻土和高岭土等原料复合，通过烧结法制备了Ag-HA/硅藻土-高岭土复合陶瓷；然后，通过XRD、SEM、EDS和原子吸收分光光度计对Ag-HA/硅藻土-高岭土复合陶瓷的结构进行了表征；最后，研究了Ag-HA/硅藻土-高岭土复合陶瓷对大肠杆菌（E.coli）和金黄色葡萄球菌（S.aureus）的抗菌性能。结果表明:Ag-HA/硅藻土-高岭土复合陶瓷的主物相为石英、方石英及HA；经高温烧结后，Ag-HA/硅藻土-高岭土复合陶瓷含丰富的由硅藻土颗粒间微米级孔隙及颗粒内部孔隙构成的孔道；Ag-HA/硅藻土-高岭土复合陶瓷内均匀分布着微量的Ag；当Ag含量为0.098wt%时，Ag-HA/硅藻土-高岭土复合陶瓷对E.coli和S.aureus的最小抑菌浓度分别为100 μg/mL和50 μg/mL；块状或粉末状的Ag-HA/硅藻土-高岭土复合陶瓷在1 h内对E.coli和S.aureus的杀菌率分别为60.76%和100.00%，3 h后对二者的杀菌率均达到100.00%，且在24 h内具有持久抗菌性。所得结论表明制备的Ag-HA/硅藻土-高岭土复合陶瓷是一种有前景的水处理用过滤材料。
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| 关 键 词： | 载Ag羟基磷灰石 硅藻土 复合陶瓷 抗菌 过滤 |
| 收稿时间： | 2015-10-29 |
Preparation and antibacterial properties of Ag doped hydroxyapatite/diatomite-kaolin composite ceramics |
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| DENG Cheng,QI Xiaopeng,LI Qian,SONG Qiuhua,DENG Yangwu.Preparation and antibacterial properties of Ag doped hydroxyapatite/diatomite-kaolin composite ceramics[J].Acta Materiae Compositae Sinica,2016,33(11):2591-2599. |
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| Authors: | DENG Cheng QI Xiaopeng LI Qian SONG Qiuhua DENG Yangwu |
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| Affiliation: | 1.School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China;2.School of Resources and Environment Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China |
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| Abstract: | In order to improve water quality through filtering microbial and impurities in water, Ag doped hydroxyapatite (Ag-HA) antibacterial powders were prepared by one-step-coprecipitation method, and they were mixed with raw materials such as diatomite and kaolin etc. to prepare Ag-HA/diatomite-kaolin composite ceramics by sintering method firstly. Then, the structures of Ag-HA/diatomite-kaolin composite ceramics were characterized by XRD, SEM, EDS and atomic absorption spectrophotometer. Finally, the antibacterial properties of Ag-HA/diatomite-kaolin composite ceramics for Escherichia coli (E.coli) and Staphylococcus aureus (S.aureus) were investigated. The results show that the main phases of Ag-HA/diatomite-kaolin composite ceramics are quartz, cristobalite and HA. Ag-HA/diatomite-kaolin composite ceramics contain numerous channels after high-heat sintering, which are made up of the micron scale pores between diatomite particles and the pores in particles; microcrystalline Ag distributes uniformly in Ag-HA/diatomite-kaolin composite ceramics. When Ag content is 0.098wt%, the minimal inhibitory concentrations against E.coli and S.aureus are 100 μg/mL and 50 μg/mL respectively. Bactericidal rates of block or powdery Ag-HA/diatomite-kaolin composite ceramics against E.coli and S.aureus are 60.76% and 100.00% within 1 h, both reach 100.00% after 3 h, and possess persistent antibacterial properties within 24 h. The conclusions obtained indicate that the prepared Ag-HA/diatomite-kaolin composite ceramics are a promising filter for water treatment. |
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| Keywords: | Ag doped hydroxyapatite diatomite composite ceramics antibacterial filter |
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