1 Ocak 2017 Dergi makalesi Açık Erişim

Celebi, Metin; Karakas, Kadir; Ertas, Ilknur Efecan; Kaya, Murat; Zahmakiran, Mehmet

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        "affiliation": "Yuzuncu Yil Univ, Dept Chem, Nanomat & Catalysis Res Grp, TR-65080 Van, Turkey", 
        "name": "Celebi, Metin"
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      {
        "affiliation": "Yuzuncu Yil Univ, Dept Chem, Nanomat & Catalysis Res Grp, TR-65080 Van, Turkey", 
        "name": "Karakas, Kadir"
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      {
        "affiliation": "Yuzuncu Yil Univ, Dept Chem, Nanomat & Catalysis Res Grp, TR-65080 Van, Turkey", 
        "name": "Ertas, Ilknur Efecan"
      }, 
      {
        "affiliation": "Atilim Univ, Dept Chem Engn & Appl Chem, TR-06836 Ankara, Turkey", 
        "name": "Kaya, Murat"
      }, 
      {
        "affiliation": "Yuzuncu Yil Univ, Dept Chem, Nanomat & Catalysis Res Grp, TR-65080 Van, Turkey", 
        "name": "Zahmakiran, Mehmet"
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    "description": "Today, the catalytic reduction of Cr(VI) to Cr(III) stands one of the most important challenges in the environmental chemistry and catalysis due to highly stable, contaminant and toxic nature of Cr(VI). In this study, we show that a new nanocatalyst system comprised of 3-aminopropyltriethoxysilane (APTS) stabilized palladium(0) nanoparticles grafted onto the surface of graphene oxide (Pd/GO) efficiently works in the catalytic reduction of Cr(VI) to Cr(III) under mild reaction conditions. Pd/GO nanocatalyst was reproducibly prepared through two-steps procedure: (i) H-2 reduction of Pd(dba)2(dba= dibenzylideneacetone) in the presence of APTS in THF to synthesize colloidal APTS stabilized palladium(0) nanoparticles and then (ii) the deposition of 3-aminopropyltriethoxysilane stabilized palladium 0) nanoparticles onto the surface of graphene oxide (GO) by impregnation. The characterization of Pd/GO was carried out by advanced analytical techniques. The summation of the results acquired from these analyses reveals that the formation of well-dispersed and highly crystalline palladium(0) nanoparticles on the surface of GO. The catalytic performance of the resulting Pd/GO in terms of activity and stability was assessed in the catalytic reduction of Cr(VI) to Cr(III) in aqueous solution in the presence of formic acid (HCOOH) as a reducing agent. We found that Pd/GO nanocatalyst exhibits high activity (TOF= 3.6 mol Cr2O72-/mol Pdxmin) and reusability (> 90% at 5th reuse) in this catalytic transformation at room temperature.", 
    "doi": "10.1002/slct.201700967", 
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    "journal": {
      "issue": "27", 
      "pages": "8312-8319", 
      "title": "CHEMISTRYSELECT", 
      "volume": "2"
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    "publication_date": "2017-01-01", 
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    "title": "Palladium Nanoparticles Decorated Graphene Oxide: Active and Reusable Nanocatalyst for the Catalytic Reduction of Hexavalent Chromium(VI)"
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