<第 50 号記念特集>人と環境の共生可能な多機能性無機材料の開発
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概要
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Natural environment is in the increase process of entropy, but human being is living in the opposite decrease process of entropy, which is a dominant rule governing the process of the earth. Thus, the scientific solution of various environmental problems is quite difficult and the soft dialogue between the two opposite existences is the only solution method. The authors have discovered that hydroxyapatite [Ca_<10> (PO_4)_6 (OH)_2 : HAp] is a promising Inorganic "Lattice ion ion-exchanger" named by the author for the solution between the opposite ones, because HAp is a main constituent of tooth and bone in human body and is also main one of phosphoric ore in natural environment. Further, silicate-containing hydroxyapatite (SiAp) was found to have the disinfection effect for Ecoli cells in wastewater. Namely, such hydroxyapatite type lattice ion ion-exchangers have been found to be multifunctional ion-exchangers fitted for both human and coexistent environment. The authors have also found that small silver-containg tobermorite and volcanic ash soil in natural envionment have excellent antibacterial activities together with removal characteristics for various toxic ions, and such properties are discovered in quick lime and slaked lime. As mentioned above, new multifunctional inorganic materials fitted for both human and environment are possible and to develop such materials, we should extract excellent multifunctional characteristics concealed in natural substances and materialize the characteristics for human being.
- 山梨大学の論文