Reference of Bis(acetylacetonato)dioxomolybdenum(VI). The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Bis(acetylacetonato)dioxomolybdenum(VI), is researched, Molecular C10H14MoO6, CAS is 17524-05-9, about Atomically Dispersed Mo Sites Anchored on Multichannel Carbon Nanofibers toward Superior Electrocatalytic Hydrogen Evolution. Author is Li, Tongfei; Lu, Tingyu; Li, Xin; Xu, Lin; Zhang, Yiwei; Tian, Ziqi; Yang, Jun; Pang, Huan; Tang, Yawen; Xue, Junmin.
Developing affordable and efficient electrocatalysts as precious metal alternatives toward the hydrogen evolution reaction (HER) is crucially essential for the substantial progress of sustainable H2 energy-related technologies. The dual manipulation of coordination chem. and geometric configuration for single-atom catalysts (SACs) has emerged as a powerful strategy to surmount the thermodn. and kinetic dilemmas for high-efficiency electrocatalysis. We herein rationally designed N-doped multichannel carbon nanofibers supporting atomically dispersed Mo sites coordinated with C, N, and O triple components (labeled as Mo@NMCNFs hereafter) as a superior HER electrocatalyst. Systematic characterizations revealed that the local coordination microenvironment of Mo is determined to be a Mo-O1N1C2 moiety, which was theor. probed to be the energetically favorable configuration for H intermediate adsorption by d. functional theory calculations Structurally, the multichannel porous carbon nanofibers with open ends could effectively enlarge the exposure of active sites, facilitate mass diffusion/charge transfer, and accelerate H2 release, leading to promoted reaction kinetics. Consequently, the optimized Mo@NMCNFs exhibited superior Pt-like HER performance in 0.5 M H2SO4 electrolyte with an overpotential of 66 mV at 10 mA cm-2, a Tafel slope of 48.9 mV dec-1, and excellent stability, outperforming a vast majority of the previously reported nonprecious HER electrocatalysts. The concept of both geometric and electronic engineering of SACs in this work may provide guidance for the design of high-efficiency mol.-like heterogeneous catalysts for a myriad of energy technologies.
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Reference:
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