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Aug 13, 2024 · Surficial Reconstruction of Pt–Ni/NiS and Its Effect on Electrocatalytic Hydrogen Evolution in Alkaline Medium. Cyclic voltammetry pretreatment of Pt-based electrocatalysts has been proven to be a normal activation process on achieving the optimal alkaline hydrogen evolution performance.

Jan 15, 2021 · In summary, a Pt-NiS 2 @CC electrode with low Pt content is designed and investigated for electrochemical hydrogen evolution. Synergistic interaction between Pt and NiS 2, which leads to electron transfer from NiS 2 to Pt, is demonstrated.

Feb 27, 2017 · The unprecedented catalytic performance offered by the novel Pt 3 Ni/NiS heterostructures highlights the importance of interfacial engineering in multicomponent electrocatalysts.

Jul 1, 2024 · Pt-Ni/Al 2 O 3 catalysts were synthesized by self-constructed fluidized atomic layer deposition equipment. Each procedure involved introducing 200 mg Ni/Al 2 O 3 (or pre-reduced Ni/Al 2 O 3) powder into the chamber.

Aug 1, 2023 · Pt-embedding behaviors on a pristine NiS 2 monolayer are studied. The sensing mechanisms of Pt-NiS 2 monolayer upon CO and HCHO are expounded. The sensing potential of Pt-NiS 2 monolayer in dry-type reactor is explored.

This work purposes Pt-embedded NiS2 (Pt-NiS2) monolayer as a promising gas sensor upon CO and HCHO in dry-type reactors on basis of first-principles theory. The Pt-NiS2 monolayer is modelled through the replacement of a S atom by a Pt atom, and the formation energy is −0.57 eV, implying the exothermicity for Pt-emending on the NiS2 surface.

Aug 13, 2024 · Pt基电催化剂的循环伏安法预处理已被证明是实现最佳碱性析氢性能的正常活化过程。 到目前为止，该过程中微观结构演变和性能改进之间的一致关系还很少有报道。 在此，当采用原位透射电子显微镜和原位拉曼分析时，从结晶NiS到非晶氢氧化镍水合物 [Ni (OH) 2– x ·H 2 O，其中x ≈ 0.3]的自重构过程在铂镍纳米线的表面首先被捕获，这是提供足够质子供应的关键水解离活性位点。 此外，这种表面重建触发电流密度从-2.3增加到-38.8 mA/cm 2 (-70 mV)，几乎 …

Nov 10, 2022 · Pt-based bimetallic electrocatalysts are promising candidates to convert surplus glycerol from the biodiesel industry to value-added chemicals and coproduce hydrogen.

Feb 14, 2018 · Here we report catalysts comprising Pt on Ni single crystalline spines (Pt/Ni-SP) with high activity and stability for HER in alkaline solution with proposed mechanism.