Abstract
Catechol-functionalized materials have been widely studied due to improved adhesion and metal-catechol coordination properties. In this study, silica particles, which are the base material in a multitude of applications, were modified with catechol groups based on a surface grafting reaction via amine- and carboxylic acid-functionalized silica particles. The chemical compositions of the modified particles were analyzed using Fourier transform infrared (FT-IR) and thermal gravimetric analysis (TGA). The surface properties of each particle were investigated using zeta potential, contact angle, and Brunauer–Emmett–Teller (BET) analysis. A series of characterizations verified successful modification with individual catecholic monomers of dopamine onto the silica surface. On the basis of the bioinspired surface modification, catechol-functionalized silica particles (SiO2[sbnd]CA) exhibited outstanding adhesion properties with metals. The SiO2[sbnd]CA showed enhanced Fe3+-capturing capacity that was five times that of bare silica particles. Furthermore, SiO2[sbnd]CA exhibits outstanding adhesion on the TiO2-coated layer. The improved adhesion properties of SiO2[sbnd]CA were due to high affinity and strong binding as a result of the metal-catechol coordination.
| Original language | English |
|---|---|
| Pages (from-to) | 55-63 |
| Number of pages | 9 |
| Journal | Colloids and Surfaces A: Physicochemical and Engineering Aspects |
| Volume | 511 |
| DOIs | |
| State | Published - 2016 Dec 20 |
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Keywords
- Adhesion
- Catechol
- Metal-catechol coordination
- Silica particles
- Surface modification
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Catechol grafted silica particles for enhanced adhesion to metal by coordinate bond. / Lee, Jeongwook; Ko, Jaehyoung; Ryu, Jungju; Shin, Joohuei; Kim, Hyosin; Sohn, Daewon.
In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 511, 20.12.2016, p. 55-63.Research output: Contribution to journal › Article
TY - JOUR
T1 - Catechol grafted silica particles for enhanced adhesion to metal by coordinate bond
AU - Lee, Jeongwook
AU - Ko, Jaehyoung
AU - Ryu, Jungju
AU - Shin, Joohuei
AU - Kim, Hyosin
AU - Sohn, Daewon
PY - 2016/12/20
Y1 - 2016/12/20
N2 - Catechol-functionalized materials have been widely studied due to improved adhesion and metal-catechol coordination properties. In this study, silica particles, which are the base material in a multitude of applications, were modified with catechol groups based on a surface grafting reaction via amine- and carboxylic acid-functionalized silica particles. The chemical compositions of the modified particles were analyzed using Fourier transform infrared (FT-IR) and thermal gravimetric analysis (TGA). The surface properties of each particle were investigated using zeta potential, contact angle, and Brunauer–Emmett–Teller (BET) analysis. A series of characterizations verified successful modification with individual catecholic monomers of dopamine onto the silica surface. On the basis of the bioinspired surface modification, catechol-functionalized silica particles (SiO2[sbnd]CA) exhibited outstanding adhesion properties with metals. The SiO2[sbnd]CA showed enhanced Fe3+-capturing capacity that was five times that of bare silica particles. Furthermore, SiO2[sbnd]CA exhibits outstanding adhesion on the TiO2-coated layer. The improved adhesion properties of SiO2[sbnd]CA were due to high affinity and strong binding as a result of the metal-catechol coordination.
AB - Catechol-functionalized materials have been widely studied due to improved adhesion and metal-catechol coordination properties. In this study, silica particles, which are the base material in a multitude of applications, were modified with catechol groups based on a surface grafting reaction via amine- and carboxylic acid-functionalized silica particles. The chemical compositions of the modified particles were analyzed using Fourier transform infrared (FT-IR) and thermal gravimetric analysis (TGA). The surface properties of each particle were investigated using zeta potential, contact angle, and Brunauer–Emmett–Teller (BET) analysis. A series of characterizations verified successful modification with individual catecholic monomers of dopamine onto the silica surface. On the basis of the bioinspired surface modification, catechol-functionalized silica particles (SiO2[sbnd]CA) exhibited outstanding adhesion properties with metals. The SiO2[sbnd]CA showed enhanced Fe3+-capturing capacity that was five times that of bare silica particles. Furthermore, SiO2[sbnd]CA exhibits outstanding adhesion on the TiO2-coated layer. The improved adhesion properties of SiO2[sbnd]CA were due to high affinity and strong binding as a result of the metal-catechol coordination.
KW - Adhesion
KW - Catechol
KW - Metal-catechol coordination
KW - Silica particles
KW - Surface modification
UR - http://www.scopus.com/inward/record.url?scp=84988943536&partnerID=8YFLogxK
U2 - 10.1016/j.colsurfa.2016.09.062
DO - 10.1016/j.colsurfa.2016.09.062
M3 - Article
AN - SCOPUS:84988943536
VL - 511
SP - 55
EP - 63
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
SN - 0927-7757
ER -