Catechol grafted silica particles for enhanced adhesion to metal by coordinate bond
- Title
- Catechol grafted silica particles for enhanced adhesion to metal by coordinate bond
- Author
- 손대원
- Keywords
- Surface modification; Silica particles; Catechol; Adhesion; Metal-catechol coordination
- Issue Date
- 2016-12
- Publisher
- ELSEVIER SCIENCE BV
- Citation
- COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, v. 511, Page. 55-63
- Abstract
- Catechol-functionalized materials have been widely studied due to improved adhesion and metalcatechol 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-CA) exhibited outstanding adhesion properties with metals. The SiO2-CA showed enhanced Fe3+-capturing capacity that was five times that of bare silica particles. Furthermore, SiO2-CA exhibits outstanding adhesion on the TiO2-coated layer. The improved adhesion properties of SiO2-CA were due to high affinity and strong binding as a result of the metal-catechol coordination. (C) 2016 Elsevier B.V. All rights reserved.
- URI
- https://www.sciencedirect.com/science/article/pii/S0927775716308123https://repository.hanyang.ac.kr/handle/20.500.11754/101786
- ISSN
- 0927-7757; 1873-4359
- DOI
- 10.1016/j.colsurfa.2016.09.062
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > CHEMISTRY(화학과) > Articles
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