Synthesis of iron-based nanoparticles using oolong tea extract for the degradation of malachite green

• Published in: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Vol. 117; pp. 801 - 804
• Main Authors: Huang, Lanlan, Weng, Xiulan, Chen, Zuliang, Megharaj, Mallavarapu, Naidu, Ravendra
• Format: Journal Article
• Language: English
• Published: England Elsevier B.V 03-01-2014
• Subjects: Characterization; Coloring Agents - metabolism; Degradation; Green synthesis; Iron - chemistry; Malachite green; Metal Nanoparticles - chemistry; Microscopy, Electron, Scanning; OT-FeNP; Plant Extracts - chemistry; Plant Leaves - chemistry; Rosaniline Dyes - metabolism; Spectrometry, X-Ray Emission; Spectrophotometry, Ultraviolet; Spectroscopy, Fourier Transform Infrared; Tea - chemistry; X-Ray Diffraction; Characterization; Degradation; Green synthesis; OT-FeNP; Malachite green
• ISSN: 1386-1425; 1873-3557
• DOI: 10.1016/j.saa.2013.09.054

Degradation of malachite green using iron nanoparticles synthesized by oolong tea extract. [Display omitted]
•Iron nanoparticles (Fe NPs, 40–50nm) were synthesized using oolong tea extracts.•75.5% MG was removed by Fe NPs.•The formation of Fe NPs were confirmed by various techniques.
Iron-based nanoparticles (OT-FeNP) were synthesized using oolong tea extracts. Their morphology, structure and size were confirmed by scanning electron microscopy (SEM), X-ray energy-dispersive spectroscopy (EDS), X-ray diffraction (XRD), UV–visible (UV–vis) and Fourier Transform Infrared spectroscopy (FTIR). Formation of FeNP results in mostly spherical particles with diameters ranging from 40 to 50nm. Degradation of malachite green (MG) using OT-FeNP demonstrated that kinetics fitted well to the pseudo first-order reaction by removing 75.5% of MG (50mg/L). This indicated that OT-FeNP has the potential to serve as a green nanomaterial for environmental remediation.