Multi-metal nanomaterials obtained from oil/water interface as effective catalysts in reduction of 4-nitrophenol

Effective Catalytic Reduction of 4-Nitrophenol to 4-Aminophenol over Etched Halloysite Nanotubes@α-Ni(OH)2

“…However, 4-NP’s reduction product, 4-aminophenol (4-AP), is a vital organic chemical intermediate that is widely used in different industries, such as the production of paracetamol, vitamin B1 and analgesic drugs in the medicine industry; direct dyes, sulfur dyes, disperse dyes, and acid dyes in the dyeing industry; antioxidants in the rubber industry; and photosensitive materials for photographic developers . One of the common and effective methods for achieving 4-AP from 4-NP reduction is to utilize metal nanoparticles (NPs) as a catalyst and NaBH 4 as a reductant in an aqueous solution. − Various morphologies of metal nanoparticles (supported or nonsupported) have been developed and exhibit excellent catalytic reduction activity; for example, (Pt/Au@RGOs), Pt@Ag nanoparticles (Pt@Ag NPs), and multimetal catalysts (Co–W–P catalysts on a piece of carbon cloth) have, respectively, shown k app values of 3.8 × 10 –3 , 5.9 × 10 –3 , and 1.2 × 10 –2 s –1 .…”

Oxidative addition of 1,4‐dichloro‐2‐butyne to an organoplatinum complex: A new precursor for synthesis of ultrasmall Pt nanoparticles thin film at liquid/liquid interface as the electrocatalyst in methanol oxidation reaction

“…In this study the fabrication of Pt thin film involving chemical reduction of the organoplatinum‌(IV) complex at the toluene‐water interface is demonstrated. XRD pattern of the as‐synthesized thin film displays in Figure and shows the diffraction peaks corresponding to (111), (200), (220), (311) and (222) planes of the face centered cubic ( fcc ) crystalline Pt(0) …”

“…Hoseini and co‐workers investigated the effect of organoplatinum (II) complexes such as [PtCl 2 (cod)], [PtI 2 (cod)], cis ‐[Pt( p ‐MeC 6 H 4 ) 2 (SMe 2 ) 2 ] and [PdCl 2 (cod)] on the morphology and size of Pt NPs fabricated at toluene‐water interface. The interfacial assembly of NPs at oil–water interface has received a significant deal of attention as a facile and cost effective route for preparation of thin films . This liquid–liquid planar interface has been provided considerable template for self‐assembly of platinum NPs into thin films .…”

PtSn Nanoalloy Thin Films as Anode Catalysts in Methanol Fuel Cells

“…Among them, GO is an excellent candidate due to its unique properties, including high conductivity, large surface area, and high mechanical, chemical, and thermal stability . Because of oxygen containing surface groups, GO-supported multimetallic NPs are used as efficient catalysts that can increase the interaction with metals, and they have also shown higher catalytic performance compared to their monometallic counterparts …”

“…Among them, GO is an excellent candidate due to its unique properties, including high conductivity, large surface area, and high mechanical, chemical, and thermal stability. 32 Because of oxygen containing surface groups, GOsupported multimetallic NPs are used as efficient catalysts that can increase the interaction with metals, 33 and they have also shown higher catalytic performance compared to their monometallic counterparts. 34 Here, we report on the synthesis of PtSn nanoalloys obtained by reaction of [PtMe 2 (bipy)], 1, 35 complex with tin(II) halides followed by NaBH 4 reduction, and on their electrocatalytic activity toward the methanol oxidation reaction (MOR) in the presence or absence of GO support.…”