Biosynthesis of Ag/reduced graphene oxide/Fe(3)O(4) using Lotus garcinii leaf extract and its application as a recyclable nanocatalyst for the reduction of 4-nitrophenol and organic dyes

J Colloid Interface Sci. 2017 Jul 1:497:33-42. doi: 10.1016/j.jcis.2017.02.064. Epub 2017 Feb 28.

Abstract

In current research, Ag/RGO/Fe3O4 nanocomposite was synthesized through applying the aqueous extract of Lotus garcinii leaves through a two-step method. The plant extract was utilized as agents for reduction and stabilization in biosynthesizing nanocomposite. The green synthesized nanocatalyst was characterized by FT-IR, FE-SEM, EDX, XRD, TEM, UV-Vis absorption spectroscopy. The catalytic activity of the biosynthesized nanocomposite was studied by reducing different colored solutions contained organic pollutants such as 4-nitrophenol (4-NP), Congo red (CR) and Rhodamine B (RhB). In order to verify commercial applications of the prepared heterogeneous nanocatalyst, reusability and recoverability tests were performed in five successive catalytic reactions.

Keywords: 4-Nitrophenol; Ag/RGO/Fe(3)O(4) nanocomposite; Biosynthesis; Lotus garcinii; Organic dyes; Reduction.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Catalysis
  • Coloring Agents / chemistry*
  • Ferrosoferric Oxide / chemistry*
  • Ferrosoferric Oxide / metabolism
  • Graphite / chemistry*
  • Graphite / metabolism
  • Lotus / chemistry*
  • Lotus / metabolism
  • Nitrophenols / chemistry*
  • Oxidation-Reduction
  • Plant Extracts / chemistry
  • Plant Extracts / metabolism*
  • Silver / chemistry*

Substances

  • Coloring Agents
  • Nitrophenols
  • Plant Extracts
  • Silver
  • Graphite
  • Ferrosoferric Oxide
  • 4-nitrophenol