Cobalt-Ruthenium Nanoalloys Parceled in Porous Nitrogen-Doped Graphene as Highly Efficient Difunctional Catalysts for Hydrogen Evolution Reaction and Hydrolysis of Ammonia Borane

Abstract

The development of clean fuels for hydrogen utilization will benefit from low-cost and active catalysts to produce hydrogen via hydrolytic dehydrogenation by electrochemical and chemical means. Herein, we designed and synthesized a high-efficiency and stable catalyst with lowruthenium content CoRu alloy nanoparticles supported on porous nitrogen-doped graphene layers (CoRu

Reconciling structure prediction of alloyed, ultrathin nanowires with spectroscopy

“…Nevertheless, relatively little work has been performed on RuCo alloys, which have been reported to be useful in applications, such as but not limited to batteries 23 and Fischer-Tropsch catalysts 24,25 in addition to electrocatalysts for the hydrogen evolution reaction (HER), 22,[26][27][28][29][30] the hydrogen oxidation reaction (HOR), 31 the oxygen reduction reaction (ORR), 32,33 and the oxygen evolution reaction (OER). 34 Results for RuCo alloys used as electrocatalysts have been especially promising, with the alloys frequently outperforming the Pt standards at lower overall costs.…”

Carbon quantum dots enhanced the activity for the hydrogen evolution reaction in ruthenium-based electrocatalysts

“…Therefore, CQDs may be an ideal carrier for the preparation of metal HER electrocatalysts. 48,49 In this work, we explored the synergy between the carrier and metal (Ru), and investigated the effect of the carrier and metal crystallinity on the HER catalytic performance. The hybrid materials were prepared by a facile pyrolysis method using three typical carbon supports: biomass Porphyra (PC), Porphyra-CQDs, and Porphyra activated carbon (AC), denoted as Ru@PC, Ru@CQDs and Ru@P-AC (Scheme 1).…”

Interface electron collaborative migration of Co–Co3O4/carbon dots: Boosting the hydrolytic dehydrogenation of ammonia borane

“…S3a) of Co-Co 3 O 4 /CDs and Co/CDs were measured at 77 K: both displayed type-IV isotherms with a distinct hysteresis loop in the range of 0.4-1.0 P / P 0 , affirming the mesoporous nature of these catalysts [45] . Moreover, the sharp peaks at relative pressure P / P 0 < 0.1 in the adsorption isotherms can be observed, indicating that they also possess substantial micropores [9] . From Table S1, S BET values of 220.2 and 165.6 m 2 g -1 were obtained for Co/CDs and Co-Co 3 O 4 /CDs with average pore diameters of 5.11 and 6.51 nm, respectively.…”