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@ARTICLE{Heppe:612269,
      author       = {Heppe, Nils and Gallenkamp, Charlotte and Snitkoff-Sol,
                      Rifael Z. and Paul, Stephen D. and Segura-Salas, Nicole and
                      Haak, Hendrik and Moritz, Dominik C. and Kaiser, Bernhard
                      and Jaegermann, Wolfram and Potapkin, Vasily and Jafari,
                      Atefeh and Schünemann, Volker and Leupold, Olaf and Elbaz,
                      Lior and Krewald, Vera and Kramm, Ulrike},
      title        = {{A}pplying {N}uclear {F}orward {S}cattering as {I}n {S}itu
                      and {O}perando {T}ool for the {C}haracterization of
                      ${F}e{N}_4$ {M}oieties in the {H}ydrogen {E}volution
                      {R}eaction},
      journal      = {Journal of the American Chemical Society},
      volume       = {146},
      number       = {18},
      issn         = {0002-7863},
      address      = {Washington, DC},
      publisher    = {ACS Publications},
      reportid     = {PUBDB-2024-05256},
      pages        = {12496-12510},
      year         = {2024},
      abstract     = {Nuclear forward scattering (NFS) is a synchrotron-based
                      technique relying on the recoil-free nuclear resonance
                      effect similar to Mössbauer spectroscopy. In this work, we
                      introduce NFS for in situ and operando measurements during
                      electrocatalytic reactions. The technique enables faster
                      data acquisition and better discrimination of certain iron
                      sites in comparison to Mössbauer spectroscopy. It is
                      directly accessible at various synchrotrons to a broad
                      community of researchers and is applicable to multiple metal
                      isotopes. We demonstrate the power of this technique with
                      the hydrogen evolution mechanism of an immobilized iron
                      porphyrin supported on carbon. Such catalysts are often
                      considered as model systems for iron–nitrogen-carbon
                      (FeNC) catalysts. Using in situ and operando NFS in
                      combination with theoretical predictions of spectroscopic
                      data enables the identification of the intermediate that is
                      formed prior to the rate-determining step. The conclusions
                      on the reaction mechanism can be used for future
                      optimization of immobilized molecular catalysts and
                      metal–nitrogen–carbon (MNC) catalysts.},
      cin          = {DOOR ; HAS-User / FS-PET-S},
      ddc          = {540},
      cid          = {I:(DE-H253)HAS-User-20120731 /
                      I:(DE-H253)FS-PET-S-20190712},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632) / 6G3 - PETRA III (DESY) (POF4-6G3) /
                      FS-Proposal: I-20200863 (I-20200863) / FS-Proposal:
                      I-20221267 (I-20221267) / DFG project 443703006 - SFB 1487:
                      Eisen, neu gedacht! (443703006)},
      pid          = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G3 /
                      G:(DE-H253)I-20200863 / G:(DE-H253)I-20221267 /
                      G:(GEPRIS)443703006},
      experiment   = {EXP:(DE-H253)P-P01-20150101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:38630640},
      UT           = {WOS:001226283100001},
      doi          = {10.1021/jacs.4c00436},
      url          = {https://bib-pubdb1.desy.de/record/612269},
}