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Local crystal structure of nano-manganese-oxide gold adsorbent

Iikubo, Satoshi*; Koyanaka, Hideki*; Shamoto, Shinichi  ; Takeuchi, Ken*; Kohara, Shinji*; Kodama, Katsuaki  ; Loong, C.-K.*

The local crystal structure of dried and deuterated nano-manganese-oxide powder samples was studied via atomic pair distribution function analysis of X-ray and neutron powder diffraction data. The protonated sample shows ultrahigh efficiency as a gold adsorbent even from ppt-level aqueous solutions such as seawater. We show that the nano-manganese-oxide particles have an R-MnO$$_{2}$$-type local crystal structure. The possible role of the protons on the surface of the nano-particles is discussed.

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Category:Chemistry, Multidisciplinary

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