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@INPROCEEDINGS{Pliekhova:409616,
      author       = {Pliekhova, Olena and Oleksii, Pliekhov and Mattia, Fanetti
                      and Arcon, Iztok and natasa, Novak Tusar and Lavrencic
                      Stangar, Urska},
      title        = {{C}u and {Z}r surface sites in photocatalytic activity of
                      {T}i{O}$_{2}$ nanoparticles: the effect of {Z}r
                      distribution},
      reportid     = {PUBDB-2018-03461},
      year         = {2018},
      note         = {Poster contrution at the conference},
      abstract     = {TiO$_{2}$ is the most studied photocatalyst for
                      environmental application. The industrial scale application
                      of TiO$_{2}$ is facing numerous problems andimmobilization
                      of active and stable layers is among them. There is always a
                      compromise between good mechanical stability and good
                      photocatalytic activity ofimmobilyzed layers. Since
                      zirconium oxide is claimed to have outstanding mechanical
                      properties and in some cases causing the increase in
                      catalytic activityof metal modified TiO$_{2}$., we have
                      studied influence of Zr modification of TiO$_{2}$. and Cu
                      modified TiO$_{2}$ photocatalysts, with the goal to improve
                      their photocatalyticand mechanical
                      properties.Copper/zirconium surface modified photocatalysts
                      were prepared by modification of commercial titanium dioxide
                      Aeroxide Degussa P25.Hardness test (Fig. 1) of active layers
                      obtained from modified TiO$_{2}$ showed that Zr loading
                      leads to improvement of mechanical properties compared to
                      onlyCu modified samples. Microscopic investigation of copper
                      modified powders (Fig. 4) showed formation of copper
                      nanoclusters about 1-2 nm size on thesurface of TiO$_{2}$.
                      EXAFS results (Figs. 5 and 6) suggest formation of separate
                      ZrO$_2$ and CuO species attached to TiO$_{2}$ surface. The
                      surface acidity titrationshowed, that Zr modification, leads
                      to covering of all rutile acidic sites (Fig. 3). Thus, while
                      combined Cu/Zr modification, Zr acts as a shield, covering
                      rutilesurface, that results in preferably copper/anatase
                      interaction. Thus, zirconium modification prevents formation
                      of harmful copper/rutile interactions, whichappear at higher
                      copper loading, and improves photocatalytic activity of
                      combined Cu/Zr modified TiO$_{2}$ photocatalyst.},
      month         = {Jun},
      date          = {2018-06-04},
      organization  = {10th European Meeting on Solar
                       Chemistry and Photocatalysis:
                       Environmental Applications, Ciudad de
                       Almería (Spain), 4 Jun 2018 - 8 Jun
                       2018},
      subtyp        = {Other},
      cin          = {DOOR},
      cid          = {I:(DE-H253)HAS-User-20120731},
      pnm          = {6G3 - PETRA III (POF3-622) / FS-Proposal: I-20170160 EC
                      (I-20170160-EC) / FS-Proposal: I-20160044 EC (I-20160044-EC)
                      / CALIPSOplus - Convenient Access to Light Sources Open to
                      Innovation, Science and to the World (730872)},
      pid          = {G:(DE-HGF)POF3-6G3 / G:(DE-H253)I-20170160-EC /
                      G:(DE-H253)I-20160044-EC / G:(EU-Grant)730872},
      experiment   = {EXP:(DE-H253)P-P65-20150101},
      typ          = {PUB:(DE-HGF)6},
      doi          = {10.3204/PUBDB-2018-03461},
      url          = {https://bib-pubdb1.desy.de/record/409616},
}