One-pot green synthesis of silver/iron oxide composite nanoparticles for 4-nitrophenol reduction

Jau Rung Chiou, Bo Hung Lai, Kai Chih Hsu, Dong Hwang Chen

研究成果: Article同行評審

278 引文 斯高帕斯(Scopus)

摘要

Silver/iron oxide composite nanoparticles have been synthesized successfully via a facile one-pot green route by the use of l-arginine, which created an aqueous solution of about pH 10 and acted as a reducing agent for the successive formation of iron oxide and Ag nanoparticles. The product was characterized to be silver-coated iron oxide and iron oxide hydroxide composite nanoparticles with a mean diameter of about 13.8. ±. 3.0. nm and 8.53% of Ag in weight. It exhibited good catalytic activity for the reduction of 4-nitrophenol to 4-aminophenol with sodium borohydride. The reduction reaction followed the pseudo-first-order kinetics. The corresponding rate constants increased with the increases of temperature and catalyst amount but decreased with the increase of initial 4-NP concentration, revealing an activation energy of 28.2. kJ/mol and a diffusion controlled mechanism. In addition, this product had quite good stability. No significant activity loss was observed after reuse for 5 cycles.

原文English
頁(從 - 到)394-400
頁數7
期刊Journal of Hazardous Materials
248-249
發行號1
DOIs
出版狀態Published - 2013 3月 5

All Science Journal Classification (ASJC) codes

  • 環境工程
  • 環境化學
  • 廢物管理和處置
  • 污染
  • 健康、毒理學和誘變

指紋

深入研究「One-pot green synthesis of silver/iron oxide composite nanoparticles for 4-nitrophenol reduction」主題。共同形成了獨特的指紋。

引用此