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Facile Synthesis of Well‐Dispersed Silver Nanoparticles on Hierarchical Flower‐like Ni 3 Si 2 O 5 (OH) 4 with a High Catalytic Activity towards 4‐Nitrophenol Reduction
Author(s) -
Jin Renxi,
Xing Yan,
Yu Xiaodan,
Sun Shaolin,
Yu Donghui,
Wang Fangfang,
Wu Wenbin,
Song Shuyan
Publication year - 2012
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201200791
Subject(s) - catalysis , materials science , nanocomposite , chemical engineering , nanostructure , nanoparticle , thermal stability , specific surface area , nanotechnology , formability , metallurgy , chemistry , organic chemistry , engineering
Layered nickel silicate nanoflowers (NSFs) with a hierarchical nanostructure have been successfully fabricated by a template‐free solvothermal method. The as‐prepared nanoflowers were composed of many interconnected edge‐curving lamellae with a thickness of about 15 nm and had a high specific surface area (279 m 2 g −1 ) and large pore volume (0.67 cm 3 g −1 ). The highly dispersed small silver nanoparticles (AgNPs) were immobilized on the surface of NSFs through the in situ reduction of Ag + by Sn 2+ . The AgNP/NSF nanocomposites showed a high performance in the catalytic reduction of 4‐nitrophenol. In particular, there was no visible decrease in the catalytic activity of the reused catalysts even after being recycled four times. The as‐prepared AgNP/NSF nanocomposites might be an excellent catalyst owing to their availability, formability, chemical and thermal stability , and high specific surface area.