Sol–gel synthesis of palladium nanoparticles supported on reduced graphene oxide: an active electrocatalyst for hydrogen evolution reaction

Abstract

In this work, the synthesis and characterization of palladium nanoparticle-reduced graphene oxide hybrid (Pd-rGO) material is reported. Techniques of X-ray diffraction, transmission electron microscope (TEM), energy-dispersive X-ray, FT-IR spectroscopy, thermogravimetric analysis and cyclic voltammetry were used to characterize the structure and properties of the Pd-rGO. Results demonstrate the effect of Pd on the reduced GO. The average particle size of the Pd nanoparticles supported on rGO obtained from TEM is about 12-18 nm. Moreover, glassy carbon electrode (GCE) modified with palladium nanoparticle-graphene oxide hybrid (Pd-rGO/GCE) was prepared by casting of the Pd-rGO solution on GCE. The electrochemical and catalytic activity of the Pd-rGO/GCE was studied in 0.1 M H 2 SO 4 solution. The Pd-rGO/GCE electrode exhibited remarkable electrocatalytic activity for the hydrogen evolution reaction (HER). At potential more negative than −0.4 V vs. Ag|AgCl|KCl 3M , the current is mainly due to hydrogen evolution reaction. Finally, the kinetic parameters of hydrogen evolution reaction are also discussed on the Pd-rGO/GCE.

Bio‐reduced GO /Pd nanocomposite as an efficient and green synthesized catalyst for hydrogen evolution reaction

“…On the other hand, the onset potential of HER obtained on bio‐rGO/Pd is about −0.20 V, which is comparable with Pd‐rGO composite (−0.20 V), 45 another Pd‐rGO composite (−0.12 V) 46 and rGO‐Fe 48 ‐Pd 52 composite (−0.14 V) 47 reported in the literature.…”

Facile fabrication of flexible glutamate biosensor using direct writing of platinum nanoparticle-based nanocomposite ink

“…The FTIR spectrum ( Fig. S2) of PtNPs-MWCNT-PEDOT:PSS had a peak around 500 cm −1 , which suggests metal-oxygen bonding (Chekin, 2015;Kurt et al, 2016).…”

Pd nanoparticles supported on reduced graphene oxide as an effective and reusable heterogeneous catalyst for the Mizoroki–Heck coupling reaction

“…The FT‐IR spectrum of the PdNPs/rGO‐NH 2 material depicts typical bands at 3408, 1620, 1404, and 1040 cm –1 ascribed to the stretching vibrations of OH, C=C, NH, and C–O groups, respectively (Figure c). It should be noted that the bonding between Pd and rGO can take place through hydrogen bonding or van der Waals forces with the –OH, –COOH, –NH, and C=O groups on the functionalized rGO‐NH 2 …”

“…It should be noted that the bonding between Pd and rGO can take place through hydrogen bonding or van der Waals forces with the -OH, -COOH, -NH, and C=O groups on the functionalized rGO-NH 2 . [26,27] Figure 2 displays the XRD patterns of rGO-NH 2 and PdNPs/rGO-NH 2 nanocomposite. The XRD pattern of GO exhibits a distinct and characteristic peak at 2θ = 11.8 (data not shown).…”