TY - JOUR
T1 - SPION-decorated organofunctionalized MCM48 silica-based nanocomposites for magnetic solid-phase extraction
AU - Garcia-Osorio, Daniel
AU - Nogueira, Helton P.
AU - Gonçalves, Josué M.
AU - Toma, Sergio H.
AU - Garcia-Segura, Sergio
AU - Araki, Koiti
N1 - Funding Information:
Authors are very grateful to the Brazilian agencies National Council for Scientific and Technological Development (CNPq 402281/2013-6, 401581/2016-0, 303137/2016-9), and São Paulo Research Foundation (FAPESP 2018/21489-1, 2013/24725-4 and 2015/2076-9) for financial support and fellowships (J. M. G. CNPq 141853/2015-8, H. P. N. CNPq 141164/2015-8, and S. H. T. CNPq 305950/2016-9). We also thank Brazilian Nanotechnology National Laboratory – LNNano@CNPEM (Brazil) for the use of TEM/STEM facilities and the Laboratório de Materiais Magnéticos – DFMT@IF-USP (Brazil) for the magnetic hysteresis measurement.
Publisher Copyright:
© The Royal Society of Chemistry.
PY - 2021
Y1 - 2021
N2 - One of the most commonly used parameters to evaluate the environmental impact of petrochemical-associated industries and its consequence on human health is the presence of benzene, toluene, ethylbenzene, and xylene in water, which are known as BTEX. The removal of these compounds from groundwater, and thus assuring the quality of this resource, is of high relevance but challenging for regions where the technologically advanced devices required for analytical control are unavailable. Accordingly, herein, a novel silica-based nanocomposite adsorbent (MCM48/SPION/C8) was developed together with an efficient magnetic concentration/extraction and recovery method for BTEX contaminants in water samples, allowing their quantitative extraction and recovery and analysis, even in outdated systems. The implementation of magnetic nanoparticles enabled analysis by magnetic solid-phase extraction (mSPE) as expected due to the tailor-made adsorption/desorption properties associated with the easy and fast separation of the adsorbent, its recycling, and reuse. Organo-functionalization of hydrophilic and highly ordered mesoporous silica MCM48 with alkyl chains enabled hydrophobic interactions, thus tailoring its affinity for BTEX species. The novel nanocomposite adsorbent was characterized and compared with a state-of-art commercial product, demonstrating that it outperforms conventional solid-phase extraction materials in terms of recovery efficiency due to its higher specific surface area and entrapment in the hierarchical mesoporous structure achieved upon organofunctionalization with octylsilane. This journal is
AB - One of the most commonly used parameters to evaluate the environmental impact of petrochemical-associated industries and its consequence on human health is the presence of benzene, toluene, ethylbenzene, and xylene in water, which are known as BTEX. The removal of these compounds from groundwater, and thus assuring the quality of this resource, is of high relevance but challenging for regions where the technologically advanced devices required for analytical control are unavailable. Accordingly, herein, a novel silica-based nanocomposite adsorbent (MCM48/SPION/C8) was developed together with an efficient magnetic concentration/extraction and recovery method for BTEX contaminants in water samples, allowing their quantitative extraction and recovery and analysis, even in outdated systems. The implementation of magnetic nanoparticles enabled analysis by magnetic solid-phase extraction (mSPE) as expected due to the tailor-made adsorption/desorption properties associated with the easy and fast separation of the adsorbent, its recycling, and reuse. Organo-functionalization of hydrophilic and highly ordered mesoporous silica MCM48 with alkyl chains enabled hydrophobic interactions, thus tailoring its affinity for BTEX species. The novel nanocomposite adsorbent was characterized and compared with a state-of-art commercial product, demonstrating that it outperforms conventional solid-phase extraction materials in terms of recovery efficiency due to its higher specific surface area and entrapment in the hierarchical mesoporous structure achieved upon organofunctionalization with octylsilane. This journal is
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U2 - 10.1039/d0ma00989j
DO - 10.1039/d0ma00989j
M3 - Article
AN - SCOPUS:85122636101
SN - 2633-5409
VL - 2
SP - 963
EP - 973
JO - Materials Advances
JF - Materials Advances
IS - 3
ER -