Selective oxidation of benzyl alcohol by reduced graphene oxide supported platinum nanoparticles

Abstract

The Pt / rGO nanocatalyst was synthesized by the immobilization method by deposition of platinum nanoparticles on reduced graphene oxide (rGO) as a support material. The support (rGO) was prepared from the reduction of graphene oxide (GO) by the reducing agent sodium borohydride (NaBH4), while (GO) was prepared from the graphite oxidation using the modified Hummer method. Morphological, chemical and structural characteristics of synthesized samples were investigated by Scanning Electron Microscope (SEM), transmittance Scanning Microscope (TEM), Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), and X-ray and Raman Spectroscopy. The performance of the Pt/rGO catalysts were evaluated in the benzyl alcohol oxidation to produce benzaldehyde using an environmentally friendly oxidizing agent, hydrogen peroxide, under moderate conditions. The variables that were studied on oxidation of benzyl alcohol were temperature, catalyst mass and H2O2 concentration. The best results were achieved when the catalyst amount was 10 mg, 50% hydrogen peroxide concentration and 80 °C reaction temperature. The conditions under which the reaction was carried out are moderate reaction conditions, and the oxidizing agent (H2O2) is an environmentally friendly oxidizing agent.

An ultra-low-cost and adjustable in-house electrospinning machine to produce PVA nanofiber

“…Another study showed that a combination of natural extraction and hydrothermal processes which was applied to the S- and N-Codoped Carbon nanospheres can enhance the adsorption properties of Pb (II) from aqueous solutions [17] . When it comes to catalytic applications, immobilization method was used to deposit Platinum nanoparticles on reduced graphene oxide to modify the catalytic properties [18] . While according to [19] , nanocomposite Pd/rGO catalyst as an efficient catalyst was synthesized sol immobilization method of deposition Pd nanoparticles on rGO.…”

A new phase transfer nanocatalyst NiFe2O4–PEG for removal of dibenzothiophene by an ultrasound assisted oxidative process: kinetics, thermodynamic study and experimental design

“…Therefore, according to these result, the experimental data well t pseudo-rst-order model. [33][34][35] 3.3.1. Arrhenius (kinetic) and thermodynamic analysis.…”

Evaluation of the morphology and chelating agent excess in the design of luminescent metalorganic framework of europium thenoyltrifluoroacetone

“…There is a correlation between the coordination geometry and the dimensionality: size 1 Divisio ´n de Ciencias Ba ´sicas e Ingenierı ´a, Universidad Auto ´noma Metropolitana-Azcapotzalco, Col. Reynosa-Tamaulipas, Me ´xico or hardness of the metal center and electronic configuration affect the resulting topology of MOF. 2,3 Over the last years, MOFs have emerged as a new promising porous material in the areas of gas sorption and separation, 4 as platform for immobilizing molecular catalysts on conductive substrates, [5][6][7][8] water treatment, 9 storage, 10 antibacterial and antobiofilm 10 and light emitting diodes (LEDs). 11 Rare earth doped materials are very useful nowadays, because the characteristics that provide the lanthanides to the material can confer new applications as optoelectronics devices, fiber amplifiers, solid state laser, 12 solar cells, 13 and luminescence.…”