著者

山本 修 福田 大樹 澤井 淳 木俣 光正 笹本 忠

出版者

THE CARBON SOCIETY OF JAPAN

雑誌

炭素 (ISSN:03715345)

巻号頁・発行日

vol.2000, no.195, pp.420-423, 2000-12-20 (Released:2010-06-28)

参考文献数

16

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An ion-exchange resins were treated for I h by an aqueous solution of MgSO4 with a concentration of 1 mol dm-3 and they were carbonized for 1h in a high purity N2 gas at the temperature range from 300 to 1000°C. For the obtained spherical carbon containing MgO, the bactericidal effects for Escherichia coli were studied by colony count method. From XRD measurements of carbonized resins, MgO of cubic phase was detected and no graphite was observed. The amount of MgO in the carbon samples was a constant value of 30wt%, irrespective of the carbonization temperature of an ion-exchange resin exchanged by Mg2+. From the results of bactericidal tests, it was found that the antibacterial activity increased with the increase of the crystallinity of MgO dispersed in carbon samples, i.e., the increase of carbonization temperature. On the sample carbonized at 1000°C, it was clarified to show the bactericidal action for Escherichia coli.