Ultrafast carbothermal shocking fabrication of cation vacancy-rich Mo doped Ru nanoparticles on carbon nanotubes for high-performance water/seawater electrolysis

Abstract

Achieving the rapid synthesis of high-performance catalysts is of particular importance for realizing the industrialization of electrocatalytic water splitting. Herein, through a rapid carbothermal shocking method, we reported a superior...

An interface-engineered Co2P/CoMoP2 heterojunction with greatly improved electrocatalytic activity in water/seawater splitting

“…As is well known, the mechanism of the HER process can be divided into two basic steps: one is the Volmer reaction and another is the Heyrovsky reaction or the Tafel reaction. The slope value of 57.74 mV dec −1 for Co 2 P/CoMoP 2 indicated the catalysts conformed to the Volmer-Heyrovsky mechanism in alkaline electrolyte 42,43. Moreover, compared with other modi-…”

“…The slope value of 57.74 mV dec −1 for Co 2 P/CoMoP 2 indicated the catalysts conformed to the Volmer–Heyrovsky mechanism in alkaline electrolyte. 42,43 Moreover, compared with other modified-Co 2 P catalysts and other Co- or Mo-based electrocatalysts listed in detail in Fig. 4c and Table S1,† e.g.…”

Rapid carbothermal shocking fabrication of iron-incorporated molybdenum oxide with heterogeneous spin states for enhanced overall water/seawater splitting

“…21,22 Notably, the synthesis of MoO 2 usually relies on the long-time pyrolysis, such as the programmed reduction method and tube furnace heating methods, which easily leads to active site agglomeration and excessive oxidation. 23 This can reduce the activity and efficient utilization of active sites, and in turn affects the activity introduced by heterogeneous spin states. Meanwhile, it is difficult for the structure of MoO 2 to produce lattice changes when heterogeneous spin states are introduced by conventional methods.…”

“…26 This will effectively solve the oxidation and aggregation of active sites in the long-time pyrolysis process. 23 More importantly, the rapid heating and cooling process can easily form lattice distortions, which then generate vacancies and abundant unsaturated edge sites in MoO 2 . 10 In all, it could be expected that rapid heating processes will enable accurate synthesis of MoO 2 -based electrocatalysts with the potential to elucidate structure-property relationships to guide optimal catalyst preparation.…”

Ru-Doped NiFe-MIL-53 with Facilitated Reconstruction and Active Hydrogen Supplement for Enhanced Nitrate Reduction

“…It can intrinsically provide abundant H ads for the hydrogenation process through an accelerating water dissociation process. Moreover, Ru-based catalysts are considered to be effective for NO 3 RR. ,,− In this regard, Ru-doped MOFs may be promising candidates for the highly efficient NO 3 RR for ammonia production. Additionally, MOF-based electrocatalysts usually undergo structural transformation during the electrochemical process and the reconstructed species are regarded as the active sites. ,− For example, the Yan group reported the in situ generated highly oxidized Co species from Co-TPA, which displayed excellent catalytic activity for NO 3 RR .…”