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@ARTICLE{Smuda:472515,
      author       = {Smuda, Matthias and Finzel, Kati and Hantusch, Martin and
                      Ströh, Jonas and Pienack, Nicole and Khadiev, Azat and
                      Terraschke, Huayna and Ruck, Michael and Doert, Thomas},
      title        = {{F}ormation of {B}i$_2${I}r nanoparticles in a
                      microwave-assisted polyol process revealing the suboxide
                      {B}i$_4${I}r$_2${O}},
      journal      = {Dalton transactions},
      volume       = {50},
      issn         = {0300-9246},
      address      = {London},
      publisher    = {Soc.},
      reportid     = {PUBDB-2021-05068},
      pages        = {17665 - 17674},
      year         = {2021},
      abstract     = {Intermetallic phases are usually obtained by
                      crystallization from the melt. However, phases containing
                      elements with widely different melting and boiling points,
                      as well as nanoparticles, which provide a high specific
                      surface area, are hardly accessible via such a
                      high-temperature process. The polyol process is one option
                      to circumvent these obstacles by using a solution-based
                      approach at moderate temperatures. In this study, the
                      formation of Bi2Ir nanoparticles in a microwave-assisted
                      polyol process was investigated. Solutions were analyzed
                      using UV–Vis spectroscopy and the reaction was tracked
                      with synchrotron-based in situ powder X-ray diffraction
                      (PXRD). The products were characterized by PXRD and
                      high-resolution transmission electron microscopy. Starting
                      from Bi(NO$_3$)$_3$ and Ir(OAc)$_3$, the new suboxide
                      Bi$_4$Ir$_2$O forms as an intermediate phase at about 160
                      °C. Its structure was determined by a combination of PXRD
                      and quantum-chemical calculations. Bi$_4$Ir$_2$O decomposes
                      in vacuum at about 250 °C and is reduced to Bi$_2$Ir by
                      hydrogen at 150 °C. At about 240 °C, the polyol process
                      leads to the immediate reduction of the two metal-containing
                      precursors and crystallization of Bi2Ir nanoparticles.},
      cin          = {DOOR ; HAS-User / FS-PET-D / UDresden / UKiel},
      ddc          = {540},
      cid          = {I:(DE-H253)HAS-User-20120731 / I:(DE-H253)FS-PET-D-20190712
                      / I:(DE-H253)UDresden-20130903 / I:(DE-H253)UKiel-20120814},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632) / 6G3 - PETRA III (DESY) (POF4-6G3)},
      pid          = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G3},
      experiment   = {EXP:(DE-H253)P-P23-20150101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {34806720},
      UT           = {WOS:000720971000001},
      doi          = {10.1039/D1DT03199F},
      url          = {https://bib-pubdb1.desy.de/record/472515},
}