Facile synthesis of self-supported intertwined columnar NiCoP as a high efficient electrocatalyst for hydrogen evolution reaction

Electronic interaction of ruthenium species on bimetallic phosphide for superior electrocatalytic hydrogen generation

“…57–59 The small peaks at 129.6 and 130.2 eV belong to the P 2p 3/2 and P 2p 1/2 of metal–P bonds, respectively, suggesting the formation of metal phosphides. 60 Meanwhile, the incorporation of Ru species can be confirmed by the Ru 3d spectrum in Fig. 3d, where Ru 3d 3/2 and 3d 5/2 appear at 280.6 eV and 286.1 eV, respectively.…”

Boosting oxygen evolution reaction rates with mesoporous Fe-doped MoCo-phosphide nanosheets

“…The presence of both Co 3+ and Co 2+ species further suggested that the Co ions were partially oxidized and could participate in redox reactions during the electrocatalytic process. 48,49 The observation of two small peaks of Co-P, suggesting the involvement of phosphorus in the catalyst's formation to form cobalt phosphide. The slightly higher binding energy observed in the Co 2p XPS spectrum of MoCoFeP PNSs compared to the other catalysts indicated a benecial for more Co 2+ active species and promote the electrocatalytic process.…”

Electrochemical tuning of a Cu3P/Ni2P hybrid for a promoted hydrogen evolution reaction

“…S1b, ESI †), the peaks at 852.30 eV and 872.74 eV corresponded to the 2p3/2 and 2p1/2 of Ni 0 , respectively, which confirmed the presence of metallic Ni. [33][34][35] The peaks at 855.47 eV and 873.87 eV were indexed to the 2p3/2 and 2p1/2 of Ni 2+ , respectively, due to the surface oxidation and peaks at 860.94 eV and 878.96 eV which contributed to the satellite peaks. [33][34][35] In the high-resolution XPS spectrum of Cu 2p for the NiCu precursor (Fig.…”

“…[33][34][35] The peaks at 855.47 eV and 873.87 eV were indexed to the 2p3/2 and 2p1/2 of Ni 2+ , respectively, due to the surface oxidation and peaks at 860.94 eV and 878.96 eV which contributed to the satellite peaks. [33][34][35] In the high-resolution XPS spectrum of Cu 2p for the NiCu precursor (Fig. S1c, ESI †), the peaks at 932.00 eV and 951.84 eV were related to the 2p3/2 and 2p1/2 of Cu 0 , respectively.…”