Ni nanoparticles/NiFe LDHs/MXene ternary composites for catalytic hydrogenation of p-Nitrophenol

Abstract

NiFe LDHs/MXene composites are preliminarily prepared by the hydrothermal method. Then, Ni nanoparticles/LDHs/MXene ternary composites are formed by in-situ reduction by NaBH₄ in liquid phase. Interfacial morphology and structure of Ni/LDHs/MXene composites are investigated by SEM, XRD, and XPS. For catalytic hydrogenation of p-nitrophenol (4-NP), the catalytic apparent rate (K_app) of Ni/LDHs/MXene-4 sample can reach to 175.5 s⁻¹·g⁻¹ and the actual conversion rate is close to 100 % after 9 min. As a recyclable catalyst, the stability of catalytic hydrogenation can remain about 94.1 % after 7 cycles. These ternary composites may be potentially applied in the pharmaceutical intermediates and catalytic conversion.