Organically Modified Silica with Pyrazole-3-carbaldehyde As a New Sorbent for Solid-liquid Extraction of Heavy Metals

Overview

Journal Molecules

Publisher MDPI

Specialty Biology

Date 2013 Dec 26

PMID 24368604

Citations 4

Authors

Smaail Radi

Said Tighadouini

Maryse Bacquet

Stephanie Degoutin

Francine Cazier

Mustapha Zaghrioui

Yahia N Mabkhot

Affiliations

Soon will be listed here.

Abstract

A new chelating matrix, SiNP, has been prepared by immobilizing 1.5-dimethyl-1H-pyrazole-3-carbaldehyde on silica gel modified with 3-aminopropyl-trimethoxysilane. This new chelating material was well characterized by elemental analysis, FT-IR spectroscopy, cross polarization magic angle spinning solid state 13C-NMR, nitrogen adsorption-desorption isotherm, BET surface area, BJH pore size, and scanning electron microscopy (SEM). The new product exhibits good chemical and thermal stability as determined by thermogravimetry curves (TGA). The new prepared material was used as an adsorbent for the solid-phase extraction (SPE) of Pb(II), Cd(II), Cu(II) and Zn(II) from aqueous solutions using a batch method, prior to their determination by flame atomic adsorption spectrometry. The adsorption capacity was investigated using kinetics and pH effects. Common coexisting ions did not interfere with separation and determination.

Citing Articles

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