Polyaniline-coated mesoporous Rh films for nonacidic hydrogen evolution reaction

Amorphous-crystalline PdRu bimetallene for efficient hydrogen evolution electrocatalysis

“…The low Tafel slope indicates that the HER pathway follows the Volmer-Tafel mechanism with the rate determining step of the chemical desorption process. [32][33][34] The exchange current density ( j 0 ) was further calculated by extrapolating the Tafel curve at 0 V to determine the inherent catalytic activity of the electrocatalysts. The calculated j 0 of PdRu bimetallene is À0.789 mA cm 2 , which is greater than that of Pd metallene (À0.753 mA cm 2 ).…”

Rhodium–Cobalt Alloy Nanotubes Toward Methanol Oxidation Reaction

“…Herein, the binding energy of Rh 3 d 5/2 and Rh 3 d 3/2 is negatively shifted by 0.2 eV compared with that of Com‐Rh‐NCs (Figure S1, Supporting Information). This shift derives from the partial charge transfer from Co to Rh due to the different electronegativity between Rh and Co (Rh: 2.28; Co: 1.88), which increases the density of the electron cloud around Rh and further confirms the formation of RhCo alloy [8e,9,14a] . By quantifying the peak area, the content of Rh 0 species in RhCo‐NTs‐Rh 1 Co 1 is calculated to be 88.8%, which indicates that the main form of Rh is metallic.…”

“…Recent pioneering works have revealed that noble metal rhodium (Rh)‐based nanostructures possess excellent electroactivity for the oxidation reactions of various alcohols (such as methanol, [ 3 ] ethanol, [ 4 ] glycerol, [ 5 ] and formic acid [ 6 ] ), carbon monoxide reduction reaction, [ 7 ] hydrogen evolution reaction, [ 8 ] hydrazine oxidation reaction, [ 9 ] nitrogen reduction reaction, [ 10 ] and so on. Among these important electrochemical reactions, the MOR at Rh‐based electrocatalyst is attracting increased attention because the onset oxidation potential of MOR at Rh nanomaterials is much lower than that at Pt‐ and Pd‐based nanomaterials in alkaline media.…”

A phosphorus modified mesoporous AuRh film as an efficient bifunctional electrocatalyst for urea-assisted energy-saving hydrogen production

“…3c) was fitted to two strong peaks at 307.08 and 311.83 eV assigned to the Rh(0) 3d 5/2 and Rh(0) 3d 3/2 , respectively, while the other weaker double peaks at 308.63 and 313.88 eV were identified as 3d 5/2 and 3d 3/2 of Rh( iii ). 46,47 Note that the Rh(0) 3d 5/2 spectrum for the P-mAuRh film shows a positive shift to that of the mAuRh film owing to the strong electron interactions among Au, Rh, and P, which may result in weak bonding between the Rh active sites and reaction intermediates and thus facilitate water electrocatalysis. 48–50 As for the P 2p core-level spectrum of the P-mAuRh film (Fig.…”