Formation of snowman-like Pt/Pd thin film and Pt/Pd/reduced-graphene oxide thin film at liquid–liquid interface by use of organometallic complexes, suitable for methanol fuel cells

Hoseini, S. Jafar; Bahrami, Mehrangiz; Dehghani, Modarres

doi:10.1039/c4ra01625d

Cited by 49 publications

(45 citation statements)

References 67 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…95 When different metal salts are dissolved together, alloys may form at the interface. 96,97 Pt and Sn were found to produce rod shaped composite structures 98 whilst other metals produce roughly spherical particles which aggregate into 2D sheets at the interface. These materials can produce alloys which match the initial ratio of metallic salts in solution as with Ag-Au and Au-Cu;…”

Section: Decorated Nanostructures and Compositesmentioning

confidence: 99%

“…102 rGO may be formed from GO by the same reducing reagent used to generate the metal nanoparticles in solution. 96,98 Self-assembly of carbon nanocomposites has been demonstrated by combining few layer graphene with CNTs and C 60 and metal nanoparticle/CNT hybrid films have also been formed. 67, 103,104 It was noted that the introduction of carbon nanotubes caused the aqueous phase nanoparticles to very rapidly assemble at the interface.…”

Section: Decorated Nanostructures and Compositesmentioning

confidence: 99%

“…Templated films have been achieved through in situ metallic deposition onto nanorods, graphene oxide (GO) and reduced-graphene oxide (rGO) 66,69,101. Assembled films may be templated, either by spontaneous chemical reactions, or through controlled electrodeposition 69,96,98,101. The chemical reduction to form nanoparticles on the surface of GO and rGO can be conducted in unison with…”

mentioning

confidence: 99%

See 2 more Smart Citations

Assembly of Nanoscale Objects at the Liquid/Liquid Interface

2015

View full text Add to dashboard Cite

The liquid-liquid interface provides a molecularly sharp, defect free focal plane for the assembly of solid materials. In this article we discuss the various materials which have been successfully assembled at the liquid/liquid interface such as metallic nanoparticles, Janus particles and carbon nanomaterials. Strategies to induce particle assembly include manipulation of surface chemistry, surface charge and potential control. Liquid/liquid assembly can be exploited to synthesise materials in situ and template preformed structures. We go on to discuss the difficulties encountered when attempting to fully understand the structure of assemblies present at the liquid/liquid interface and the development of experimental techniques to elucidate information about the structure, stability, chemical composition, and reactivity of interfacial assemblies.

show abstract

Section: Decorated Nanostructures and Compositesmentioning

confidence: 99%

Section: Decorated Nanostructures and Compositesmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Assembly of Nanoscale Objects at the Liquid/Liquid Interface

2015

View full text Add to dashboard Cite

show abstract

“…GO was prepared from graphite powder in accordance with the modified Hummers–Offeman method . GO was first exfoliated by dispersing GO (10 mg) in double‐distilled water (25 ml) with sonication for 10 min.…”

Section: Methodsmentioning

confidence: 99%

“…These structures exhibit a wide variety of applications especially in catalysis . Previously, some platinum‐ and palladium‐based nanostructures were synthesized at a liquid–liquid interface from organometallic precursors and their applications were investigated in p ‐nitrophenol reduction reaction, methanol oxidation in fuel cells and Suzuki–Miyaura reactions …”

Section: Introductionmentioning

confidence: 99%

Effect of addition of iron on morphology and catalytic activity of PdCu nanoalloy thin film as catalyst in Sonogashira coupling reaction

Hoseini

Aramesh

Bahrami

2016

Applied Organom Chemis

Self Cite

View full text Add to dashboard Cite

Palladium‐supported catalysts are complex assemblies with a challenging preparation. Minor changes in their preparation conditions can affect the activity, selectivity and lifetime of these catalysts. PdCuFe nanoparticle (NP) thin films were supported on reduced graphene oxide (RGO) by the reduction of the organometallic complex [PdCl2‌(cod)] (cod = cis,cis‐1,5‐cyclooctadiene), and [Cu(acac)2] and [Fe(acac)3] (acac = acetylacetonate) complexes at a toluene–water interface. We have investigated the application of the liquid–liquid interface method for preparing ultrathin films of catalysts and have evaluated the catalytic activity of the prepared NPs for the Sonogashira coupling reaction in micelle media. Also, we have investigated the effect of the addition of iron on the morphology, size and catalytic activity of PdCu/RGO NPs. Our study shows that both of the prepared catalysts (PdCu/RGO and PdCuFe/RGO) are efficient and recoverable catalysts for the Sonogashira carbon–carbon coupling reaction. This method has advantages compared to other routes, such as short reaction times, high to excellent yields, facile and low‐cost method for the preparation of the catalysts, and easy separation and reusability of the catalysts.

show abstract

Ligandless C‐C bond formation via Suzuki–Miyaura reaction in micelles or water–ethanol solution using PdPtZn and PdZn nanoparticle thin films

Hoseini

Zarei

Iran

2015

Applied Organom Chemis

Self Cite

View full text Add to dashboard Cite

PdPtZn and PdZn nanoparticle (NP) thin films were synthesized by the reduction of [PdCl 2 (cod)], [PtCl 2 (cod)] (cod = cis,cis-1,5cyclooctadiene) and [Zn(acac) 2 ] (acac = acetylacetonate) complexes at an oil-water interface. The structure and morphology of the as-prepared NPs were characterized with X-ray diffraction, transmission electron microscopy and energy dispersive analysis of X-rays. Catalytic activity of the prepared NPs was investigated in the Suzuki-Miyaura cross-coupling reaction in H 2 O-EtOH and various micellar media systems such as cetyltrimethylammonium bromide (cationic surfactant), sodium dodecylsulfate (anionic surfactant) and Pluronic P123 (non-ionic surfactant). PdPtZn and PdZn thin films exhibited higher catalytic activity compared to Pd thin film in the Suzuki-Miyaura coupling reaction due to the appropriate interaction between palladium, platinum and zinc metals.

show abstract

Formation of snowman-like Pt/Pd thin film and Pt/Pd/reduced-graphene oxide thin film at liquid–liquid interface by use of organometallic complexes, suitable for methanol fuel cells

Cited by 49 publications

References 67 publications

Assembly of Nanoscale Objects at the Liquid/Liquid Interface

Assembly of Nanoscale Objects at the Liquid/Liquid Interface

Effect of addition of iron on morphology and catalytic activity of PdCu nanoalloy thin film as catalyst in Sonogashira coupling reaction

Ligandless C‐C bond formation via Suzuki–Miyaura reaction in micelles or water–ethanol solution using PdPtZn and PdZn nanoparticle thin films

Contact Info

Product

Resources

About