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@ARTICLE{Ercan:639428,
      author       = {Ercan, Kerem Emre and Karatok, Mustafa and Say, Zafer and
                      Kurt, Merve and Sika-Nartey, Abel Tetteh and Ozensoy, Emrah},
      title        = {{C}ooperative {C}atalytic {R}ole of {C}o and {M}n {S}ites
                      on {L}a{C}o$_x${M}n$_{1–x}${O}$_3$ {P}erovskite
                      {N}anoparticles in {CO} and {NO} {O}xidation},
      journal      = {ACS applied nano materials},
      volume       = {8},
      number       = {34},
      issn         = {2574-0970},
      address      = {Washington, DC},
      publisher    = {ACS Publications},
      reportid     = {PUBDB-2025-04520},
      pages        = {16779 - 16791},
      year         = {2025},
      abstract     = {Perovskites have significant potential to improve
                      efficiency, reduce the costs of conventional oxidation
                      catalysts, and contribute to cleaner and more sustainable
                      energy solutions. However, numerous structural factors
                      influencing their catalytic performance are still a subject
                      to debate. In this study, simple perovskite nanoparticles in
                      the form of LaCoO3 (LC) and LaMnO3 (LM), as well as
                      LaCoxMn1–xO3 (LCM)-mixed B-site perovskites with different
                      B-site cations, were synthesized and their performances in
                      CO oxidation and NO oxidation reactions were examined. The
                      LaCo0.8Mn0.2O3 catalyst exhibited the highest catalytic
                      activity in both CO and NO oxidation reactions, surpassing
                      the 1 wt $\%Pt/γ-Al2O3$ benchmark nanoparticle catalyst and
                      other currently investigated perovskite nanoparticles. Co
                      sites (predominantly Co3+) in the optimized LaCo0.8Mn0.2O3
                      catalyst were found to be enriched in electron density,
                      while Mn sites (mostly in Mn4+ form) were found to be more
                      electron deficient as opposed to LC and LM. LaCo0.8Mn0.2O3
                      not only released significantly greater amounts of oxygen
                      and generated larger extents of oxygen vacancies than LC and
                      LM under reducing conditions but also achieved this at
                      favorably lower temperatures. In light of the current
                      results, we report that Co sites in LCM operate as the main
                      active site during both CO and NO oxidation by enabling
                      stabilization and activation of O2 (ads), while Mn sites
                      mainly serve as promoters by increasing the adsorption
                      strength of CO (ads) and NO (ads) as well as facilitating
                      oxygen vacancy formation and vacancy regeneration, where
                      oxygen vacancies were also found to contribute particularly
                      to the NO oxidation reaction within the currently
                      investigated thermal window. These findings demonstrate that
                      the electronic properties of LCM can be systematically
                      tailored at the nanometer scale in a versatile manner to
                      address different reactivity requirements of challenging
                      catalytic reactions.},
      cin          = {DOOR ; HAS-User},
      ddc          = {540},
      cid          = {I:(DE-H253)HAS-User-20120731},
      pnm          = {6G3 - PETRA III (DESY) (POF4-6G3) / CALIPSOplus -
                      Convenient Access to Light Sources Open to Innovation,
                      Science and to the World (730872)},
      pid          = {G:(DE-HGF)POF4-6G3 / G:(EU-Grant)730872},
      experiment   = {EXP:(DE-H253)P-P65-20150101},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.1021/acsanm.5c02876},
      url          = {https://bib-pubdb1.desy.de/record/639428},
}