Immobilization of Ultrafine Bimetallic Ni–Pt Nanoparticles Inside the Pores of Metal–Organic Frameworks as Efficient Catalysts for Dehydrogenation of Alkaline Solution of Hydrazine

Abstract

We report a facile liquid impregnation approach for immobilization of ultrafine bimetallic Ni-Pt nanoparticles (NPs) inside the pores of MIL-101. The methods of powder X-ray diffraction, N2 physisorption, X-ray photoelectron spectroscopy, transmission electron microscopy, and inductively coupled plasma-atomic emission spectroscopy were employed to characterize the NiPt@MIL-101 catalysts and further indicated the as-synthesized Ni-Pt NPs were confined in the pores of MIL-101. These as-synthesized bimetallic NiPt@MIL-101 NPs exhibit exceedingly high catalytic activity, selectivity, and durability toward hydrogen generation from alkaline solution of hydrazine.

Facile synthesis of NiPt–CeO2 nanocomposite as an efficient catalyst for hydrogen generation from hydrazine borane

“…The oxidized Ni cover on the surface was presumably formed during the sample preparation process for the XPS measurements, as reported before [12,30]. The Pt 4f 7/2 and Pt 4f 5/2 with BE of 70.6 and 73.9 eV correspond to metallic Pt (Fig.…”

Pd–Ni nanoparticles supported on reduced graphene oxides as catalysts for hydrogen generation from hydrazine

“…[1][2][3] High hydrogen content (8.0 wt%) and easy recharging make hydrazine a promising hydrogen carrier. [4][5][6] Furthermore, hydrazine is a liquid-phase material, which has the potential to take the advantage of the existing liquid-based distribution infrastructure. Transition metals are usually considered as the ideal candidates for hydrogen generation from hydrazine.…”

Improvement Effect of Ni to Pd-Ni/SBA-15 Catalyst for Selective Hydrogenation of Cinnamaldehyde to Hydrocinnamaldehyde

“…It could be seen that most of the Ni is the nickel (II) species, and the fractions of the nickel (II) species in all 0.2%Pd-x%Ni/SBA-15 catalysts were approximately 90%, and only a small fraction of Ni was nickel (0) for all samples regardless of the Ni loading amount. The presence of nickel oxide also indicated that there was an electron transfer between Pd and Ni; at the same time, the sample exposed to air would also lead to the formation of nickel oxide [47][48][49][50].…”