Shell thickness controlled core–shell Fe₃O₄@CoO nanocrystals as efficient bifunctional catalysts for the oxygen reduction and evolution reactions

Abstract

Core–shell Fe3O4@CoO NCs have been demonstrated to be efficient catalysts for ORR and OER. The specific core/shell interaction can be ascribed to the main reason leading to their high catalytic performance. The shell thickness has a great influence on the catalytic activities.

Construction of three-dimensional cobalt sulfide/multi-heteroatom co-doped porous carbon as an efficient trifunctional electrocatalyst

“…54 It has been reported that cobalt oxide plays a positive role in ORR catalysis. 55,56 Dai et al reported a material consisting of Co 3 O 4 embedded in a carbon matrix, showing an E 1/2 of 0.83 V in 0.1 M KOH, which is attributed to the coupling effect by Co 3 O 4 and graphene. 50 Therefore, the formed intermediate cobalt oxide due to the transition from Co 9 S 8 also contributes to the high ORR catalytic activity.…”

“…54 It has been reported that cobalt oxide plays a positive role in ORR catalysis. 55,56 In addition to the superior activity, the anti-poisoning capability of the catalysts is also one of the most crucial factors for the long-term application of fuel cells because the impurities in air (including CO To the best of our knowledge, the strong resistance of CoS xbased catalysts towards S species has rarely been investigated in previous literature. Thus, the as-synthesized Co 9 S 8 /CoNSC exhibits superior electrocatalytic performance with strong resistance to poison, making it a promising catalyst for practical application in fuel cells.…”

α‐Ni(OH)2 Originated from Electro‐Oxidation of NiSe2 Supported by Carbon Nanoarray on Carbon Cloth for Efficient Water Oxidation

“…Through these efforts, a large number of transition metal‐based OER electrocatalysts with improved activity have been explored. However, to the best of our knowledge, most of the reported nonprecious electrocatalysts still need overpotentials larger than 200 mV to reach 10 mA cm −2 , leaving substantial room for improvement.…”

One‐pot Suzuki Coupling‐Knoevenagel Condensation Tandem Reaction Catalyzed by a Recyclable Magnetic Bifunctional Catalyst

“…In addition, magnetically recoverable nanoparticles supported catalysts showed better catalytic activity than many traditional catalysts in organic synthesis [52–58] . It's a promising way to catalyze one‐pot tandem reaction with magnetic nanoparticles supported bifunctional catalysts.…”

“…[50] In addition, magnetically recoverable nanoparticles supported catalysts showed better catalytic activity than many traditional catalysts in organic synthesis. [52][53][54][55][56][57][58] It's a promising way to catalyze one-pot tandem reaction with magnetic nanoparticles supported bifunctional catalysts. Recently, we designed and synthesized a magnetic nanoparticles supported amine-palladium bifunctionalized catalyst NHÀ Pd(0)@MNP (Figure 1.…”