Simultaneous AuIII Extraction and In Situ Formation of Polymeric Membrane-Supported Au Nanoparticles: A Sustainable Process with Application in Catalysis.
作者： Lucía Mora‐Tamez , Vicente Esquivel‐Peña , Ana L Ocampo , Eduardo Rodríguez de San Miguel , Daniel Grande
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摘要: A polymeric membrane-supported catalyst with immobilized gold nanoparticles (AuNPs) was prepared through the extraction and in-situ reduction of gold(III) salts in a one-step strategy. Polymeric inclusion membranes (PIMs) nanoporous (PNMs) were tested as different membrane support systems. Transport experiments indicated that PIMs composed cellulose triacetate, 2-nitrophenyloctyl ether, an aliphatic tertiary amine (Adogen® 364 or Alamine® 336) most efficient supports for Au(III) extraction. The simultaneous processes have proven to be result synergic phenomenon which all components are involved. SEM characterization cross-sectional samples suggested distribution AuNPs throughout membrane. TEM average particle size 36.7 2.9 nm PNMs, respectively. supported on allowed greater than 95.4% 0.05 mmol dm-3 4-nitrophenol aqueous solution 10 NaBH4 within 25 min.
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