Facile Synthesis of Well-Dispersed Silver Nanoparticles on Hierarchical Flower-like Ni3Si2O5(OH)4 with a High Catalytic Activity towards 4-Nitrophenol Reduction

被引：20

作者：

Jin, Renxi ^{[1
]}

Xing, Yan ^{[1
]}

Yu, Xiaodan ^{[1
]}

Sun, Shaolin ^{[1
]}

Yu, Donghui ^{[1
]}

Wang, Fangfang ^{[1
]}

Wu, Wenbin ^{[1
]}

Song, Shuyan ^{[2
]}

机构：

[1] NE Normal Univ, Dept Chem, Changchun 130024, Peoples R China

[2] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130012, Peoples R China

来源：

CHEMISTRY-AN ASIAN JOURNAL | 2012年 / 7卷 / 12期

基金：

中国国家自然科学基金;

关键词：

crystal engineering; nanostructures; silver; solvothermal synthesis; supported catalysts; P-AMINOPHENOL; CARBON; OXIDATION; IMMOBILIZATION; MICROSPHERES; SILICATES; FRAMEWORK; SPHERES; MATRIX;

D O I：

10.1002/asia.201200791

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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 m2?g-1) and large pore volume (0.67 cm3?g-1). The highly dispersed small silver nanoparticles (AgNPs) were immobilized on the surface of NSFs through the in situ reduction of Ag+ by Sn2+. 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.

引用

页码：2955 / 2961

页数：7

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