1 Ocak 2016 Dergi makalesi Açık Erişim

Urus, Serhan; Caylar, Mahmut; Karteri, Ibrahim

Dublin Core

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  <dc:creator>Urus, Serhan</dc:creator>
  <dc:creator>Caylar, Mahmut</dc:creator>
  <dc:creator>Karteri, Ibrahim</dc:creator>
  <dc:date>2016-01-01</dc:date>
  <dc:description>Novel graphene oxide (GO) supported bis(diphenylphosphinomethyl)amino [GO@CHONHRN(CH2PPh2)(2)] type ligands and their Pd(II) and Pt(II) complexes have been synthesized and characterized using FT-MIR/FAR, SEM, EDX, TEM, XRD, TGA and UV-Visible techniques. Additionally, GO@CHONHRN(CH2PPh2)(2)MX2 (M: Pd(II) and Pt(II)) type complexes were used as heterogeneous nano-catalysts in vitamin K-3 (2-methyl-1,4-naphthoquinone, menadione) synthesis. Graphene-supported aminomethylphosphine-Pd (II) complexes showed the best catalytic activities with high selectivities compared to the graphene-supported aminomethylphosphine-Pt(II) complexes and the literature. Selectivities and the conversions were around 60-65% with of 95-99% and respectively for the GO@aminomethylphosphine-Pd(II) complexes. The area ratio of D and G peaks of GO sheets was calculated as I-D/I-G = 1.19 using Raman spectra. The average grain size of GO and GO@aminomethylphosphine-Pd(II) complexes are determined as 18.02 nm and 46.06 nm from Scherrer's equation, respectively. The band gap (E-g) values of the GO based aminomethylphosphine-metal complexes are analyzed and enhanced from 3.31 eV to 4.21 eV. (C) 2016 Elsevier B.V. All rights reserved.</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/55133</dc:identifier>
  <dc:identifier>oai:zenodo.org:55133</dc:identifier>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>http://www.opendefinition.org/licenses/cc-by</dc:rights>
  <dc:source>CHEMICAL ENGINEERING JOURNAL 306 961-972</dc:source>
  <dc:title>Synthesis of graphene supported bis(diphenylphosphinomethyl)amino ligands and their Pd(II) and Pt(II) complexes: Highly efficient and recoverable nano-catalysts on vitamin K-3 production</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
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