Synthesis of “Clean” and Well-Dispersive Pd Nanoparticles with Excellent Electrocatalytic Property on Graphene Oxide

Abstract

Ultrafine Pd nanoparticles monodispersed on graphene oxide (GO) surfaces were successfully prepared by the redox reaction between PdCl(4)(2-) and GO. The as-made catalyst is very "clean" as a result of the surfactant-free formation process, allowing it to express high electrocatalytic ability in formic acid and ethanol oxidation relative to a commercial Pd/C catalyst. This simple and straightforward method is of significance for the facile preparation metal nanocatalysts with high catalytic activity on proper supporting materials.

Clean synthesis of Cu2O@CeO2 core@shell nanocubes with highly active interface

“…The main reason for the lack of successful hybridization is that the preformed Cu 2 O cores cannot withstand the conditions during the coating of CeO 2 in the following step (Cu 2 O could be severely etched by ammonium, which is indispensable during the CeO 2 coating process). However, recently, an important one-step synthetic strategy called 'clean synthesis' [17][18][19][20][21][22][23] inspired us to solve this problem. Herein, 'clean' means not only free of toxic raw materials, especially organic compounds, but also low-cost and low-temperature aqueous synthesis, a surface free of residues and a greatly simplified post-treatment process, which are extremely valuable for practical applications.…”

One‐Step Pyrolysis Preparation of 1.1.1 Oriented Gold Nanoplatelets Supported on Graphene and Six Orders of Magnitude Enhancement of the Resulting Catalytic Activity

“…There are by now numerous examples showing that the catalytic activity of MNPs supported on graphene is higher than the activity of analogous MNPs supported on other carbon forms or even metal oxides. [16][17][18] In the present manuscript we report the preparation of 1.1.1 facet oriented Au nanoplatelets of average lateral dimension 20 nm and 3-4 nm height supported on N-doped few layers graphene films (Au ̅̅̅̅ /fl-G, Au ̅̅̅̅ : 1.1.1 oriented Au nanoplatelets, fl:…”

Recent Nanoarchitectures in Metal Nanoparticle-Graphene Nanocomposite Modified Electrodes for Electroanalysis

“…29 In the study, referring to a previous work on the reaction of a watersoluble Pd precursor and GO, 30 a water-insoluble precursor, Pd(OAc)2, was used. By dissolving it in 1,2-dichloroethane and by volatilizing, the contact between Pd(OAc)2 and GO dispersion was enhanced, and consequently, highly loaded and ultrafine PdNPs supported on GO (PdNP-GO) was synthesized.…”

“…However, in some reports, even when GO was combined with MNPs without reduction, it seems that the lower conductivity of GO was not a cause of troubles in electrochemical measurements. 30,39 Therefore, a complete or significant reduction of GO is not essential for preparing the MNP-RGO.…”

“…46 Chen et al reported a preparation of ultrafine PdNPs on RGO for sensing hydrogen peroxide. 47 While the preparation of clean well-dispersive ultrafine PdNPs on GO by the redox reaction between PdCl4 2-and GO was reported previously, 30 in Ref. 47 the thermal reduction of GO was performed (in an oil bath at 100 C for 24 h) before reacting with PdCl4 2-.…”