Facile Construction of Pt–Co/CN_x Nanotube Electrocatalysts and Their Application to the Oxygen Reduction Reaction

Cu2ZnSnS4–PtM (M = Co, Ni) Nanoheterostructures for Photocatalytic Hydrogen Evolution

“…This positive shift is attributed to a slight Pt electron loss and is a hallmark of the Pt−Co alloying. 20 Similarly, two pairs of doublets were also fitted to the Co 2p binding energy region (Figure 3d), the stronger peaks being associated with Co 0 and the weaker to Co 2+ . The presence of Co 2+ in PtCo alloys is a common observation due to the easy oxidization of Co when exposed to air.…”

Hydrogen adsorption of nitrogen-doped carbon nanotubes functionalized with 3d-block transition metals

“…16,20,21 Modification of the electronic and magnetic properties of CNT can also typically be effectively modified through chemical decoration of transition metals (TMs), [29][30][31] which greatly expands the potential application areas of CNT, such as improving the sensitivities of chemical sensors, developing spintronic devices or catalysts and providing higher reactive sites for hydrogen gas storages. [24][25][26][27][28][32][33][34][35][36][37] 4ND defects in nitrogen-doped nanostructures may enhance reactivity and immobilize species such as transition metals; 29-31 also the binding strengths of TMs with SWCNT doped with porphyrinlike nitrogen defects (4ND-CN x NT) are significantly enhanced when compared to the pure SWCNT such that binding is stable and favourable dictated by a strong binding energy that could improve transition metal dispersion over the metal decorated SWCNT. Theoretical calculations revealed that the 4ND defects in SWCNT resulted in a decreased value of band gaps and the electronic properties of SWCNT can be effectively modified, which are strongly dependent on the TMs absorbed.…”

Self-Assembly of Gold Nanoparticles on Gold Core-Induced Polypyrrole Nanohybrids for Electrochemical Sensor of Dopamine

“…At the end, sodium citrate-capped AuNPs are assembled onto the asprepared Au-PPyNHs by electrostatic interaction to fabricate nanohybrids of Au-PPyNH-Au. 34,35 To investigate the e®ects of di®erent reaction parameters, such as temperature, volume of AuNPs for the assembly and the reaction period, on the formation of Au-PPyNH-Au nanohybrids, the temperature was set from room temperature to 50 C, 70 C and 90 C; the volume of AuNPs was kept from 100 mL to 150 mL and 200 mL; the reaction period was adjusted from 24 h to 36 h and 72 h.…”