Open AccessSynthesis of biosurfactant‐coated magnesium oxide nanoparticles for methylene blue removal and selective Pb 2+ sensing
Author(s) -
Kumar Vineet,
Jain Ayushi,
Wadhawan Shweta,
Mehta Surinder Kumar
Publication year - 2018
Publication title -
iet nanobiotechnology
Language(s) - English
Resource type - Journals
ISSN - 1751-875X
DOI - 10.1049/iet-nbt.2017.0118
Subject(s) - methylene blue , adsorption , aqueous solution , magnesium , langmuir adsorption model , nanoparticle , nuclear chemistry , monolayer , chemistry , inorganic chemistry , detection limit , materials science , chromatography , organic chemistry , nanotechnology , photocatalysis , catalysis , biochemistry
Dyes and lead (Pb 2+ ) are toxic compounds that can contaminant water. In this study, magnesium oxide (MgO) nanoparticles (NPs) prepared using clove, i.e. Syzygium aromaticum extract [clove extract (CE)] were used for methylene blue (MB) removal and Pb 2+ ion sensing in aqueous solution. Maximum 90% MB removal was achieved using MgO NPs. The MB adsorption on MgO NPs surface followed second‐order kinetics and Langmuir isotherm. MB dye was adsorbed as a monolayer on the surface of MgO NPs with maximum adsorption capacity, 5555 mg g −1 . MgO NPs were also able to selectively detect lead (Pb 2+ ) in 1 nM–200 µM range with 24 µM (3σ) limit of detection. So, CE prepared MgO NPs are useful for MB dye adsorption and metal ion sensing applications.