In situ establishment of Co/MoS₂ heterostructures onto inverse opal‐structured N,S‐doped carbon hollow nanospheres: Interfacial and architectural dual engineering for efficient hydrogen evolution reaction

Abstract

Rational design of low-cost and high-efficiency non-precious metal-based catalysts toward the hydrogen evolution reaction (HER) is of paramount significance for the sustainable development of the hydrogen economy. Interfacial manipulationinduced electronic modulation represents a sophisticated strategy to enhance the intrinsic activity of a non-precious electrocatalyst. Herein, we demonstrate the straightforward construction of Co/MoS 2 hetero-nanoparticles anchored on inverse opal-structured N,S-doped carbon hollow nanospheres with an ordered macroporous framework (denoted as Co/MoS 2 @N,S-CHNSs hereafter) via a templateassisted method. Systematic experimental evidence and theoretical calculations reveal that the formation of Co/MoS 2 heterojunctions can effectively modulate the electronic configuration of active sites and optimize the reaction pathways, remarkably boosting the intrinsic activity. Moreover, the inverse opal-structured carbon substrate with an ordered porous framework is favorable to enlarge the accessible surface area and provide multidimensional mass transport channels, dramatically expediting the reaction kinetics. Thanks to the compositional synergy and structural superiority, the fabricated Co/MoS 2 @N,S-CHNSs exhibit excellent HER activity with a low overpotential of 105 mV to afford a current density of 10 mA/cm 2 . The rationale of interface manipulation and architectural design herein is anticipated to be inspirable for the future development of efficient and earth-abundant electrocatalysts for a variety of energy conversion systems.

Highly selective light olefin production via photothermal Fischer–Tropsch synthesis over α/γ-Fe2O3-derived Fe5C2 under low pressure

“…[26][27][28][29] The maintenance of the reaction temperature is effortless due to the photothermal conversion of solar light, and the temperature is high enough to change the phase structure of the pre-catalyst under different atmospheric conditions, which may be benecial for improving the catalytic efficiency. 30,31 Therefore, mixed-phase a/g-Fe 2 O 3 as the pre-catalyst may exhibit comparable catalytic activity with the g-Fe 2 O 3 pre-catalyst and a similar light-olen selectivity as that of the a-Fe 2 O 3 pre-catalyst.…”

Super‐Hybrid Transition Metal Sulfide Nanoarrays of Co3S4 Nanosheet/P‐Doped WS2 Nanosheet/Co9S8 Nanoparticle with Pt‐Like Activities for Robust All‐pH Hydrogen Evolution

“…[29,30] Particularly, TMSs are typically thought to lack the capability for water dissociation in alkaline and neutral media, which may be the reason why TMSs were rarely reported for all-pH electrocatalysis. [7,9,31,32] How to address the above key problems through the coordinated control strategies of morphology, interface, phase, and composition is a major challenge to push the development of TMSs-based energy industry.…”

Research progress of asymmetrically coordinated single-atom catalysts for electrocatalytic reactions

“…the common carriers to anchor single metal atoms include metal oxides, 11 transition metal suldes (TMDs), 12 MXenes, 13 carbon materials, 14 and alloys. 15,16 Among them, the carbon support has a large specic surface area, good electrical conductivity, high porosity, outstanding chemical stability and corrosion resistance, and low cost, making it the most used substrate for SACs.…”