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Facilitating a high‐performance photocatalyst for Suzuki reaction: Palladium nanoparticles immobilized on reduced graphene oxide‐doped graphitic carbon nitride
Author(s) -
Zhao Xiaohua,
Xie Jiateng,
Liu Xin,
Liu Xiang
Publication year - 2019
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.4623
Subject(s) - graphitic carbon nitride , graphene , chemistry , raman spectroscopy , photocatalysis , oxide , calcination , nanoparticle , palladium , x ray photoelectron spectroscopy , catalysis , chemical engineering , doping , nuclear chemistry , inorganic chemistry , nanotechnology , materials science , organic chemistry , physics , optoelectronics , engineering , optics
We prepared a non‐covalently coupled hybrid of reduced graphene oxide (rGO)‐doped graphitic carbon nitride (g‐C 3 N 4 ) by freezing‐assisted assembly and calcination. Fourier transform infrared, Raman and X‐ray photoelectron spectroscopies and transmission electron microscopy confirmed that rGO was incorporated into the bulk g‐C 3 N 4 , which was an ideal support for loading Pd nanoparticles. The Pd nanoparticles with an average size of 4.57 nm were uniformly dispersed on the rGO‐doped g‐C 3 N 4 surface. The layered structure provided large contact area of g‐C 3 N 4 with rGO, further accelerating the electron transfer rate and inhibiting electron–hole recombination. Consequently, compared with Pd/rGO/g‐C 3 N 4 and Pd/g‐C 3 N 4 , the Pd/rGO‐doped g‐C 3 N 4 showed a prominent catalytic activity for visible‐light‐driven photocatalytic Suzuki–Miyaura coupling at ambient temperature. The Pd/rGO‐doped g‐C 3 N 4 exhibited very high stability after six consecutive cycles with minimal loss of catalytic activity.