Preparation of superhydrophobic nanocalcite crystals using Box–Behnken design

Preparation of superhydrophobic nanocalcite crystals using Box–Behnken design

Superhydrophobic nanocalcite crystals were prepared via an adjusted aqueous reaction of CaO, CO2 gas and sodium oleate. Box–Behnken design was used to optimize the preparation parameters such as CaO concentration, CO2 gas flow rate and surfactant concentration. The results revealed that the produced...

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Main Authors: Said M. El-Sheikh, Ahmed Barhoum, Samya El-Sherbiny, Fatma Morsy, Ayman Abdel-Hamid El-Midany, Hubert Rahier
Format: Article
Language:English
Published: Elsevier 2019-11-01
Series:Arabian Journal of Chemistry
Online Access:http://www.sciencedirect.com/science/article/pii/S1878535214002512
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spelling doaj-ee3064fc450c4f25a367f2fc3109b2b92020-11-24T21:37:01ZengElsevierArabian Journal of Chemistry1878-53522019-11-0112714791486Preparation of superhydrophobic nanocalcite crystals using Box–Behnken designSaid M. El-Sheikh0Ahmed Barhoum1Samya El-Sherbiny2Fatma Morsy3Ayman Abdel-Hamid El-Midany4Hubert Rahier5Nanostructured Materials Division, Advanced Materials Department, CMRDI, P.O. Box 87, Helwan 11421, Cairo, EgyptDepartment of Materials and Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium; Corresponding author.Applied Chemistry, Chemistry Department, Faculty of Science, Helwan University, 11795 Helwan, EgyptApplied Chemistry, Chemistry Department, Faculty of Science, Helwan University, 11795 Helwan, EgyptFaculty of Engineering, Mining, Petroleum and Metallurgical Department, Cairo University, Giza, EgyptDepartment of Materials and Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, BelgiumSuperhydrophobic nanocalcite crystals were prepared via an adjusted aqueous reaction of CaO, CO2 gas and sodium oleate. Box–Behnken design was used to optimize the preparation parameters such as CaO concentration, CO2 gas flow rate and surfactant concentration. The results revealed that the produced CaCO3 is indexed to the calcite phase. The crystallite size, particle size, morphology, hydrophobicity and surface charge of CaCO3 are significantly affected by changing the preparation parameters. The addition of sodium oleate helps in reducing the crystallite size from 101 nm to 48 nm, reducing the particle size from 1.5 μm length scalenohedral particles to 40 nm rhombohedral particles and modifying the properties of pure CaCO3 from highly hydrophilic to superhydrophobic. Keywords: Nanocalcite crystals, Bubbling carbonation, Box–Behnken design, Surface modification, Hydrophobicity, Particle surface chargehttp://www.sciencedirect.com/science/article/pii/S1878535214002512
collection DOAJ
language English
format Article
sources DOAJ
author Said M. El-Sheikh
Ahmed Barhoum
Samya El-Sherbiny
Fatma Morsy
Ayman Abdel-Hamid El-Midany
Hubert Rahier
spellingShingle Said M. El-Sheikh
Ahmed Barhoum
Samya El-Sherbiny
Fatma Morsy
Ayman Abdel-Hamid El-Midany
Hubert Rahier
Preparation of superhydrophobic nanocalcite crystals using Box–Behnken design
Arabian Journal of Chemistry
author_facet Said M. El-Sheikh
Ahmed Barhoum
Samya El-Sherbiny
Fatma Morsy
Ayman Abdel-Hamid El-Midany
Hubert Rahier
author_sort Said M. El-Sheikh
title Preparation of superhydrophobic nanocalcite crystals using Box–Behnken design
title_short Preparation of superhydrophobic nanocalcite crystals using Box–Behnken design
title_full Preparation of superhydrophobic nanocalcite crystals using Box–Behnken design
title_fullStr Preparation of superhydrophobic nanocalcite crystals using Box–Behnken design
title_full_unstemmed Preparation of superhydrophobic nanocalcite crystals using Box–Behnken design
title_sort preparation of superhydrophobic nanocalcite crystals using box–behnken design
publisher Elsevier
series Arabian Journal of Chemistry
issn 1878-5352
publishDate 2019-11-01
description Superhydrophobic nanocalcite crystals were prepared via an adjusted aqueous reaction of CaO, CO2 gas and sodium oleate. Box–Behnken design was used to optimize the preparation parameters such as CaO concentration, CO2 gas flow rate and surfactant concentration. The results revealed that the produced CaCO3 is indexed to the calcite phase. The crystallite size, particle size, morphology, hydrophobicity and surface charge of CaCO3 are significantly affected by changing the preparation parameters. The addition of sodium oleate helps in reducing the crystallite size from 101 nm to 48 nm, reducing the particle size from 1.5 μm length scalenohedral particles to 40 nm rhombohedral particles and modifying the properties of pure CaCO3 from highly hydrophilic to superhydrophobic. Keywords: Nanocalcite crystals, Bubbling carbonation, Box–Behnken design, Surface modification, Hydrophobicity, Particle surface charge
url http://www.sciencedirect.com/science/article/pii/S1878535214002512
work_keys_str_mv AT saidmelsheikh preparationofsuperhydrophobicnanocalcitecrystalsusingboxbehnkendesign
AT ahmedbarhoum preparationofsuperhydrophobicnanocalcitecrystalsusingboxbehnkendesign
AT samyaelsherbiny preparationofsuperhydrophobicnanocalcitecrystalsusingboxbehnkendesign
AT fatmamorsy preparationofsuperhydrophobicnanocalcitecrystalsusingboxbehnkendesign
AT aymanabdelhamidelmidany preparationofsuperhydrophobicnanocalcitecrystalsusingboxbehnkendesign
AT hubertrahier preparationofsuperhydrophobicnanocalcitecrystalsusingboxbehnkendesign
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