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- Title
One-Pot Synthesized Pd@N-Doped Graphene: An Efficient Catalyst for Suzuki–Miyaura Couplings.
- Authors
Kuniyil, Mufsir; Kumar, J. V. Shanmukha; Adil, Syed Farooq; Shaik, Mohammed Rafi; Khan, Mujeeb; Assal, Mohamed E.; Siddiqui, Mohammed Rafiq H.; Al-Warthan, Abdulrahman
- Abstract
Nitrogen-doped graphene (NDG)-palladium (Pd)-based nanocatalysts (NDG@Pd) can be potentially applied as an efficient catalyst for the preparation of biaryls in a Suzuki–Miyaura coupling reaction. Herein, we report the one-pot facile synthesis of an NDG@Pd nanocatalyst, wherein the nanocatalyst was prepared by the simultaneous reduction of graphene oxide (GRO) and PdCl2 in the presence of hydrazine hydrate as a reducing agent, while ammonium hydroxide was used as a source of "N" on the surface of graphene. The as-synthesized NDG@Pd nanocatalyst, consisting of smaller-sized, spherical-shaped palladium nanoparticles (Pd-NPs) on the surface of NDG, was characterized by several spectroscopic and microscopic techniques, including high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), ultraviolet–visible spectroscopy (UV-Vis), Fourier-transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and Brunauer–Emmett–Teller (BET). The nanocatalyst displayed outstanding catalytic activity in the Suzuki–Miyaura cross-coupling reactions of phenyl halides with phenyl boronic acids under facile conditions in water. The catalytic activity of NDG@Pd was found to be a more efficient catalyst when compared to pristine highly reduced graphene oxide (HRG) based Pd nanocatalyst (HRG@Pd). Furthermore, the reusability of the catalyst was also tested by repeatedly performing the same reaction using the recovered catalyst. The N-doped catalyst displayed excellent reusability even after several reactions.
- Subjects
GRAPHENE; X-ray photoelectron spectroscopy; SUZUKI reaction; GRAPHENE oxide; ULTRAVIOLET-visible spectroscopy; HYDRAZINE derivatives
- Publication
Catalysts (2073-4344), 2019, Vol 9, Issue 5, p469
- ISSN
2073-4344
- Publication type
Article
- DOI
10.3390/catal9050469