biostudies-literatureBai XNational Natural Science Foundation of ChinaNatural Science Foundation of Henan provinceNational Key Research and Development Program of ChinaBeijing Natural Science Foundation752https://www.ebi.ac.uk/biostudies/studies/S-EPMC9964359biostudies-literatureUnknown13(4)Constructing a heterogeneous interface using different components is one of the effective measures to achieve the bifunctionality of nanocatalysts, while synergistic interactions between multiple interfaces can further optimize the performance of single-interface nanocatalysts. The non-precious metal nanocatalysts MoS<sub>2</sub>/NiSe<sub>2</sub>/reduced graphene oxide (rGO) bilayer sandwich-like nanostructure with multiple well-defined interfaces is prepared by a simple hydrothermal method. MoS<sub>2</sub> and rGO are layered nanostructures with clear boundaries, and the NiSe<sub>2</sub> nanoparticles with uniform size are sandwiched between both layered nanostructures. This multiple-interfaced sandwich-like nanostructure is prominent in catalytic water splitting with low overpotential for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) and almost no degradation in performance after a 20 h long-term reaction. In order to simulate the actual overall water splitting process, the prepared nanostructures are assembled into MoS<sub>2</sub>/NiSe<sub>2</sub>/rGO||MoS<sub>2</sub>/NiSe<sub>2</sub>/rGO modified two-electrode system, whose overpotential is only 1.52 mV, even exceeded that of noble metal nanocatalyst (Pt/C||RuO<sub>2</sub>~1.63 mV). This work provides a feasible idea for constructing multi-interface bifunctional electrocatalysts using nanoparticle-doped bilayer-like nanostructures.Nanomaterials (Basel, Switzerland)MoS<sub>2</sub>/NiSe<sub>2</sub>/rGO Multiple-Interfaced Sandwich-like Nanostructures as Efficient Electrocatalysts for Overall Water Splitting.PMC9964359120340022021YFA14002042212034222300420086202300410356 and 222300420086202300410356121743472021YFA07187002021YFA1400204 and 2021YFA071870052171051, 12034002, 51971025 and 121743475197102552171051Ren XMei ZWu CGao HHuo DBai XXia TLi XFeng MLi SWang RGuo HCao TfalseMoS<sub>2</sub>/NiSe<sub>2</sub>/rGO Multiple-Interfaced Sandwich-like Nanostructures as Efficient Electrocatalysts for Overall Water Splitting.Constructing a heterogeneous interface using different components is one of the effective measures to achieve the bifunctionality of nanocatalysts, while synergistic interactions between multiple interfaces can further optimize the performance of single-interface nanocatalysts. The non-precious metal nanocatalysts MoS<sub>2</sub>/NiSe<sub>2</sub>/reduced graphene oxide (rGO) bilayer sandwich-like nanostructure with multiple well-defined interfaces is prepared by a simple hydrothermal method. MoS<sub>2</sub> and rGO are layered nanostructures with clear boundaries, and the NiSe<sub>2</sub> nanoparticles with uniform size are sandwiched between both layered nanostructures. This multiple-interfaced sandwich-like nanostructure is prominent in catalytic water splitting with low overpotential for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) and almost no degradation in performance after a 20 h long-term reaction. In order to simulate the actual overall water splitting process, the prepared nanostructures are assembled into MoS<sub>2</sub>/NiSe<sub>2</sub>/rGO||MoS<sub>2</sub>/NiSe<sub>2</sub>/rGO modified two-electrode system, whose overpotential is only 1.52 mV, even exceeded that of noble metal nanocatalyst (Pt/C||RuO<sub>2</sub>~1.63 mV). This work provides a feasible idea for constructing multi-interface bifunctional electrocatalysts using nanoparticle-doped bilayer-like nanostructures.2023-01-01T00:00:00Z2023 Feb2025-04-22T10:01:40.857Z2025-04-05T23:25:36.656ZS-EPMC99643593683911910.3390/nano13040752