Details
| Original language | English |
|---|---|
| Pages (from-to) | 5100-5111 |
| Number of pages | 12 |
| Journal | ChemSusChem |
| Volume | 13 |
| Issue number | 18 |
| Early online date | 14 Jul 2020 |
| Publication status | Published - 24 Sept 2020 |
Abstract
For every mass product, there are problems associated with the resulting waste. Residues of hormones in urine cannot be removed sufficiently from wastewater, and this has undesired consequences. An ideal adsorbent would take up the impurity, enable a simple separation and recyclability. Polymer colloids with high affinity towards the drug, accessible porosity, high surface area, and stimuli-responsive properties would be candidates, but such a complex system does not exist. Here, porous vinyl-functionalized organosilica nanoparticles prepared from a styrene bridged sol-gel precursor act as monomers. Initiation of the polymerization at the pore walls and addition of functional monomers result in a special copolymer, which is covalently linked to the surface and covers it. An orthogonal modification of external surface was done by click attachment of a thermoresponsive polymer. The final core-shell system is able to remove quantitatively hydrophobic molecules such as the hormone progesterone from water. A change of temperature closes the pores and induces the aggregation of the particles. After separation one can reopen the particles and recycle them.
Keywords
- core-shell particles, drug removal, mesoporous materials, organic-inorganic hybrids, water
ASJC Scopus subject areas
- Environmental Science(all)
- Environmental Chemistry
- Chemical Engineering(all)
- General Chemical Engineering
- Materials Science(all)
- General Materials Science
- Energy(all)
- General Energy
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In: ChemSusChem, Vol. 13, No. 18, 24.09.2020, p. 5100-5111.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Copolymerization of Mesoporous Styrene-Bridged Organosilica Nanoparticles with Functional Monomers for the Stimuli-Responsive Remediation of Water
AU - Kollofrath, Dennis
AU - Geppert, Marcel
AU - Polarz, Sebastian
N1 - Funding Information: We gratefully acknowledge technical/instrumental support from the German Research Foundation (DFG) via SFB1214 Project Z1 Particle Analysis Center and the Nanolab of the University of Konstanz. Open access funding enabled and organized by Projekt DEAL.
PY - 2020/9/24
Y1 - 2020/9/24
N2 - For every mass product, there are problems associated with the resulting waste. Residues of hormones in urine cannot be removed sufficiently from wastewater, and this has undesired consequences. An ideal adsorbent would take up the impurity, enable a simple separation and recyclability. Polymer colloids with high affinity towards the drug, accessible porosity, high surface area, and stimuli-responsive properties would be candidates, but such a complex system does not exist. Here, porous vinyl-functionalized organosilica nanoparticles prepared from a styrene bridged sol-gel precursor act as monomers. Initiation of the polymerization at the pore walls and addition of functional monomers result in a special copolymer, which is covalently linked to the surface and covers it. An orthogonal modification of external surface was done by click attachment of a thermoresponsive polymer. The final core-shell system is able to remove quantitatively hydrophobic molecules such as the hormone progesterone from water. A change of temperature closes the pores and induces the aggregation of the particles. After separation one can reopen the particles and recycle them.
AB - For every mass product, there are problems associated with the resulting waste. Residues of hormones in urine cannot be removed sufficiently from wastewater, and this has undesired consequences. An ideal adsorbent would take up the impurity, enable a simple separation and recyclability. Polymer colloids with high affinity towards the drug, accessible porosity, high surface area, and stimuli-responsive properties would be candidates, but such a complex system does not exist. Here, porous vinyl-functionalized organosilica nanoparticles prepared from a styrene bridged sol-gel precursor act as monomers. Initiation of the polymerization at the pore walls and addition of functional monomers result in a special copolymer, which is covalently linked to the surface and covers it. An orthogonal modification of external surface was done by click attachment of a thermoresponsive polymer. The final core-shell system is able to remove quantitatively hydrophobic molecules such as the hormone progesterone from water. A change of temperature closes the pores and induces the aggregation of the particles. After separation one can reopen the particles and recycle them.
KW - core-shell particles
KW - drug removal
KW - mesoporous materials
KW - organic-inorganic hybrids
KW - water
UR - http://www.scopus.com/inward/record.url?scp=85089258653&partnerID=8YFLogxK
U2 - 10.1002/cssc.202001264
DO - 10.1002/cssc.202001264
M3 - Article
C2 - 32662565
AN - SCOPUS:85089258653
VL - 13
SP - 5100
EP - 5111
JO - ChemSusChem
JF - ChemSusChem
SN - 1864-5631
IS - 18
ER -