Di-nuclear irons (IMAGE)
Caption
A research team led by NIMS, Hokkaido University and Hiroshima University has succeeded in developing a UV-absorbing white powder material while reducing its harmful photocatalytic activities. This was achieved by mixing commercially available porous silica and a solution containing a mononuclear iron species ([Fe(H2O)6]3+). The team then mixed this powder material with a natural oil to create a paste, evaluated its sunscreen performance and found that it was equivalent to TiO2 in performance and stability. The analysis conducted by Hokkaido University confirmed that the UV-absorbing capability of the powder is attributed to the di-nuclear iron species immobilized within the silica pores.
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Yusuke Ide National Institute for Materials Science Ide.Yusuke@nims.go.jp
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