Highly Dispersed Pt Nanoparticles on N-Doped Ordered Mesoporous Carbon as Effective Catalysts for Selective Hydrogenation of Nitroarenes

Abstract

Highly-dispersed Pt nanoparticles supported on nitrogen-modified CMK-3 mesoporous carbon (Pt/N-CMK-3) were first fabricated by a two-step impregnation route. The influences of N content on the catalyst porous structure, Pt nanoparticle size, surface properties, and interaction between Pt species and the support were investigated in detail using N2 sorption, X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectra (XPS). The N species acted as anchoring sites for the stabilization of Pt particles. Benefiting from the formation of ultrafine metal nanoparticles, the Pt/N-CMK-3 exhibited excellent catalytic activity and selectivity for the selective hydrogenation of nitro aromatics to the corresponding anilines with hydrogen. The Pt/N-CMK-3 catalyst could be reused eight times and keep its catalytic performance.

Vancomycin-Stabilized Platinum Nanoparticles with Oxidase-like Activity for Sensitive Dopamine Detection

“…As shown in Figure S1B, the corresponding binding energies of Pt 4f7/2 and Pt 4f5/2 are 71.2 eV and 74.5 eV, respectively. This result was very similar to the characterization of highly dispersed Pt NPs on N-doped ordered mesoporous carbon prepared by Sheng et al [21] Thus, the Pt 2+ in K2PtCl4 was reduced from +2 valence to 0 valence, which proved the successful preparation of Van-Pt2 NPs.…”

Recent Advances on Heteroatom‐Doped Porous Carbon/Metal Materials: Fascinating Heterogeneous Catalysts for Organic Transformations

“…In 2020, the Wang group investigated the catalytic activity of the Pt/N‐CMK‐3 in the hydrogenation of various nitroarenes [89] . The synthesis of Pt/N‐CMK‐3 was performed in multiple steps.…”