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@ARTICLE{Wang:878639,
      author       = {Wang, Chaoqi and Li, Xiang and Jin, Lei and Lu, Peng-Han
                      and Dejoie, Catherine and Zhu, Wenxin and Wang, Zhenni and
                      Bi, Wei and Dunin-Borkowski, Rafal E. and Chen, Kai and Jin,
                      Mingshang},
      title        = {{E}tching-{A}ssisted {R}oute to {H}eterophase {A}u
                      {N}anowires with {M}ultiple {T}ypes of {A}ctive {S}urface
                      {S}ites for {S}ilane {O}xidation},
      journal      = {Nano letters},
      volume       = {19},
      number       = {9},
      issn         = {1530-6992},
      address      = {Washington, DC},
      publisher    = {ACS Publ.},
      reportid     = {FZJ-2020-02967},
      pages        = {6363 - 6369},
      year         = {2019},
      abstract     = {The construction of multiple types of active sites on the
                      surface of a metallic catalyst can markedly enhance its
                      catalytic activity toward specific reactions. Here, we show
                      that heterophase gold nanowires (Au NWs) with multiple types
                      of active surface sites can be synthesized using an
                      etching-assisted process, yielding the highest reported
                      turnover frequency (TOF) for Au catalysts toward the silane
                      oxidation reaction by far. We use synchrotron powder X-ray
                      diffraction (PXRD) and aberration-corrected (scanning)
                      transmission electron microscopy (TEM) to show that the Au
                      NWs contain heterophase structures, planar defects, and
                      surface steps. Moreover, the contribution to the catalytic
                      performance from each type of active sites was clarified.
                      Surface steps on the Au NW catalysts, which were identified
                      using aberration-corrected (scanning) TEM, were shown to
                      play the most important role in enhancing the catalytic
                      performance. By using synchrotron PXRD, it was shown that a
                      small ratio of metastable phases within Au NWs can enhance
                      catalytic activity by a factor of 1.35, providing a further
                      route to improve catalytic activity. Of the three types of
                      surface active sites, surface terminations of planar defects
                      such as twin boundaries (TB) and stacking faults (SF) are
                      less active than metastable phases and surface steps for Au
                      catalysts toward the silane oxidation reaction. Such an
                      etching-assisted synthesis of heterophase Au NWs promises to
                      open new possibilities for catalysis, plasmonic, optics, and
                      electrical applications.},
      cin          = {ER-C-1},
      ddc          = {660},
      cid          = {I:(DE-Juel1)ER-C-1-20170209},
      pnm          = {143 - Controlling Configuration-Based Phenomena (POF3-143)},
      pid          = {G:(DE-HGF)POF3-143},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:31361961},
      UT           = {WOS:000486361900068},
      doi          = {10.1021/acs.nanolett.9b02532},
      url          = {https://juser.fz-juelich.de/record/878639},
}