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However, tuning MXenes towards superb hydrogen/oxygen evolution reaction (HER/OER) activity has remained elusive. Using first-principles calculations along with machine learning (ML) based descriptors, it is shown that late transition metal doping is able to significantly promote HER/OER activities.
22 Μαρ 2021 · Diverse structural patterns have been identified as the ground state for MB n clusters, i.e., half-sandwich for early transition metal dopants, wheel-like configuration for middle transition metal dopants, quasi-planar and umbrella-like structures for late transition metal dopants.
3 Ιουν 2019 · The central Re atoms are found to possess unusually low oxidation states of +I in Re©B 8– and +II in Re©B 9–, i.e., the Re atom behaves similarly to late transition metal elements (Ru, Fe, Co, Rh, Ir) in the M©B n– molecular wheels.
22 Ιουλ 2024 · The first two unprecedented high-nuclear wheel-hub-shaped transition-metal-doped polyoxovanadates, [M 8 Mo 4 W 4 V 20 P 20] [M = Ni (1), Co (2)], have been assembled under solvothermal conditions.
Similar to the cases of 4d transition metal doping, the 5d transition metal-doped Bn clusters adopt hypercoordinated half-sandwich or wheel-like structures for early and middle M atoms and lower-coordinated quasi-planar or umbrella-like structures for late M atoms, respectively.
The main challenge for doping and alloying 2D materials by CVD lies in the non-synchronous evaporation of the transition metal dopants, such as Fe, Cr, Co, etc., which results in heterogeneous elemental distribution or 3D aggregations.
14 Σεπ 2009 · Transition-metal alloyed nanoparticles with core−shell features (shell enrichment by one of the metals) are becoming ubiquitous, from (electro-)catalysis to biomedical applications, due to their size control, performance, biocompatibility, and cost.
