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Improved Photocatalytic Activity and Stability of Nano‐sized Ag/Ag 2 CO 3 Plasmonic Photocatalyst by Surface Modification of Fe(III) Nanocluster
Author(s) -
Dai Gaopeng,
Li Siyong,
Liu Suqin,
liang Ying,
Zhao Heng
Publication year - 2015
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201500183
Subject(s) - photocatalysis , x ray photoelectron spectroscopy , methyl orange , chemistry , scanning electron microscope , visible spectrum , irradiation , nanoparticle , absorption spectroscopy , photochemistry , nuclear chemistry , chemical engineering , nanotechnology , catalysis , materials science , organic chemistry , optics , physics , optoelectronics , nuclear physics , engineering , composite material
The surface modification of Ag/Ag 2 CO 3 with Fe(III) ions has been achieved through simply photoreduction‐impregnation method. The obtained products were characterized by means of X‐ray diffraction (XRD), scanning electron microscopy (SEM), X‐ray photoelectron spectroscopy (XPS), and UV‐vis absorption spectroscopy. Under visible‐light irradiation (γ>420 nm), the Fe(III)/Ag/Ag 2 CO 3 sample displays a higher photocatalytic activity and stability than pure Ag 2 CO 3 and Ag/Ag 2 CO 3 samples for the degradation of methyl orange (MO). The improved photocatalytic activity and stability of this ternary system could be ascribed to the synergetic effect between Ag nanoparticles and Fe(III) nanocluster. The metallic Ag nanoparticles cause an obviously enhanced visible‐light absorption to produce more photogenerated charges, while the Fe(III) works as an active site for the following oxygen reduction to reduce the recombination rate of photogenerated electrons and holes.