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@ARTICLE{Bertelsen:640326,
      author       = {Bertelsen, Andreas Dueholm and Klemmt, Rebekka and Kolding,
                      Kirstine Nygaard and Bøjesen, Espen Drath and Iversen, Bo
                      Brummerstedt},
      title        = {{C}opper-{R}ich {P}d$_x${C}u$_{1–x}$ {A}lloy
                      {N}anoparticles as {C}atalyst for {E}lectrochemical
                      {R}eduction of {CO}$_2$},
      journal      = {Chemistry of materials},
      volume       = {37},
      number       = {17},
      issn         = {0897-4756},
      address      = {Washington, DC},
      publisher    = {American Chemical Society},
      reportid     = {PUBDB-2025-04777},
      pages        = {6619 - 6628},
      year         = {2025},
      abstract     = {Copper is uniquely able to catalyze the formation of
                      hydrocarbon-derived molecules through the electrochemical
                      carbon dioxide reduction reaction (CO2RR) in aqueous media.
                      Here, we investigate the change of selectivity and/or
                      activity in CO2RR by alloying Cu with palladium by using
                      PdxCu1–x nanoparticles as electrocatalysts. In situ powder
                      X-ray diffraction reveals a much lowered reduction
                      temperature of the Cu-precursor upon alloying and
                      establishes the importance of high heating rates during
                      synthesis to ensure homogeneous Pd alloying into copper-rich
                      PdxCu1–x nanoparticles. Two different synthetic approaches
                      were used to obtain PdxCu1–x nanoparticles with a
                      composition range of x = 0.025–0.20, and the complex
                      nanostructures of the particles were highlighted using
                      four-dimensional Scanning Transmission Electron Microscopy
                      (4D-STEM). The activity and selectivity toward
                      electrochemical CO2RR in 0.1 M KHCO3 were assessed for
                      increasing Pd contents, and a systematic decrease in
                      faradaic efficiency toward hydrocarbon products was found
                      coupled with an increase in faradaic efficiency toward
                      primarily H2. The results do not support PdxCu1–x alloying
                      as a viable method for increasing selectivity toward
                      specific hydrocarbon products in electrochemical CO2RR.},
      cin          = {DOOR ; HAS-User},
      ddc          = {540},
      cid          = {I:(DE-H253)HAS-User-20120731},
      pnm          = {6G3 - PETRA III (DESY) (POF4-6G3) / FS-Proposal: I-20220506
                      EC (I-20220506-EC)},
      pid          = {G:(DE-HGF)POF4-6G3 / G:(DE-H253)I-20220506-EC},
      experiment   = {EXP:(DE-H253)P-P21.1-20150101},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.1021/acs.chemmater.5c01148},
      url          = {https://bib-pubdb1.desy.de/record/640326},
}