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Green synthesis of supported palladium nanoparticles employing pine needles as reducing agent and carrier: New reusable heterogeneous catalyst in the Suzuki coupling reaction
Author(s) -
Liu Guanghui,
Bai Xuefeng,
Lv Hongfei
Publication year - 2017
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.3587
Subject(s) - chemistry , catalysis , phenylboronic acid , palladium , suzuki reaction , nuclear chemistry , reducing agent , coupling reaction , nanoparticle , fourier transform infrared spectroscopy , transmission electron microscopy , inductively coupled plasma , heterogeneous catalysis , x ray photoelectron spectroscopy , particle size , yield (engineering) , chemical engineering , organic chemistry , materials science , composite material , engineering , physics , plasma , quantum mechanics
A green method for the synthesis of supported Pd nanoparticles (NPs) using pine needle extract as the reducing agent and the extracted residue of pine needle (RPN) as the carrier is described. The Pd/RPN nanocomposites were characterized using Fourier transform infrared, UV–visible, inductively coupled plasma atomic emission and X‐ray photoelectron spectroscopies, transmission electron microscopy and X‐ray diffraction. The spherical Pd NPs had a mean particle size of 3.25 nm and were evenly distributed on the RPN surface. More importantly, the Pd/RPN nanocomposite, as a heterogeneous catalyst, presented superior catalytic activity for the Suzuki coupling reaction. The yield of the reaction of 4‐bromotoluene with phenylboronic acid catalyzed by Pd 0.03 /RPN reached 98% with low Pd loading (0.1 mmol%) at room temperature for 30 min. In addition, the catalyst could be easily separated by centrifugation and reused at least six times without significant loss of activity.