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@ARTICLE{Fominykh:834705,
      author       = {Fominykh, Ksenia and Boehm, Daniel and Zhang, Siyuan and
                      Folger, Alena and Döblinger, Markus and Bein, Thomas and
                      Scheu, Christina and Fattakhova-Rohlfing, Dina},
      title        = {{N}on-agglomerated iron oxyhydroxide akaganeite
                      nanocrystals incorporating extraordinary high amounts of
                      different dopants},
      journal      = {Chemistry of materials},
      volume       = {29},
      number       = {17},
      issn         = {1520-5002},
      address      = {Washington, DC},
      publisher    = {American Chemical Society},
      reportid     = {FZJ-2017-04608},
      pages        = {7223-7233},
      year         = {2017},
      abstract     = {Dispersible nonagglomerated akaganeite (β-FeOOH)
                      nanocrystals doped with various elements in different
                      oxidation states such as Co(II), Ni(II), V(III), Ti(IV),
                      Sn(IV), Si(IV), and Nb(V) were prepared using a
                      microwave-assisted solvothermal synthesis in tert-butanol.
                      The doping elements could be incorporated in very high
                      concentrations of up to 20 $at. \%,$ which is attributed
                      to the kinetic control of the phase formation during the
                      solvothermal reaction, together with the extremely small
                      crystal size, which can stabilize the unusual structural
                      compositions. The particle morphology is mostly anisotropic
                      consisting of nanorods ∼4 nm in width and varying length.
                      Depending on the doping element, the length ranges from ∼4
                      nm, resulting in an almost-spherical shape, to 90 nm, giving
                      the highest aspect ratio. The particles are perfectly
                      dispersible in water, giving stable colloidal dispersions
                      that can be deposited on different substrates to produce
                      thin films 35–250 nm thick. In addition, films up to 30
                      μm thick, consisting of interconnected mesoporous spheres,
                      can be prepared in situ during the reactions. The
                      nanostructures assembled from akaganeite nanocrystals are
                      stable up to high temperatures of >400 °C. They can be
                      transformed to hematite (α-Fe2O3) by heating between 480
                      °C and 600 °C without losing the morphology, which can be
                      used for the fabrication of doped hematite nanostructures.
                      The tunable properties of the doped akaganeite nanoparticles
                      make them excellent candidates for a wide range of
                      applications, as well as versatile building blocks for the
                      fabrication of doped hematite nanomorphologies.},
      cin          = {IEK-1},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {131 - Electrochemical Storage (POF3-131)},
      pid          = {G:(DE-HGF)POF3-131},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000410868600024},
      doi          = {10.1021/acs.chemmater.7b01611},
      url          = {https://juser.fz-juelich.de/record/834705},
}