title: Surface functionalized SiO2nanoparticles with cationic polymers via the combination of mussel inspired chemistry and surface initiated atom transfer radical polymerization: Characterization and enhanced removal of organic dye.
abstract: Monodispersed SiO2particles functionalized with cationic polymers poly-((3-acrylamidopropyl)trimethylammonium chloride) (PAPTCl) were prepared using mussel inspired surface modification strategy and surface initiated atom transfer radical polymerization (SI-ATRP). Fourier transform infrared spectroscopy, transmission electron microscope, thermogravimetric analysis, X-ray photoelectron spectroscopy, and zeta potential were employed to characterize these SiO2samples. The adsorption performance of the functionalized SiO2(donated as SiO2-PDA-PAPTCl) towards anionic organic dye Congo red (CR) was investigated to evaluate their potential environmental applications. We demonstrated that the surface of SiO2particles can be successfully functionalized with cationic PAPTCl. The adsorption capability of as-prepared SiO2was found to increases from 28.70 and 106.65mg/g after surface grafted with cationic polymers. The significant enhancement in the adsorption capability of SiO2-PDA-PAPTCl is mainly attributed to the introduction of cationic polymers. More importantly, this strategy is expected to be promising for fabrication of many other functional polymer nanocomposites for environmental applications due to the universality of mussel inspired chemistry and well designability and good monomer adaptability of SI-ATRP.
authors.affiliation: Department of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Huang
authors.affiliation: Department of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China.
authors.forename: Meiying
authors.initials: M
authors.lastname: Liu
authors.affiliation: Department of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China.
authors.forename: Liucheng
authors.initials: L
authors.lastname: Mao
authors.affiliation: Department of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China.
authors.forename: Dazhuang
authors.initials: D
authors.lastname: Xu
authors.affiliation: Department of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China.
authors.forename: Guangjian
authors.initials: G
authors.lastname: Zeng
authors.affiliation: Department of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China.
authors.forename: Hongye
authors.initials: H
authors.lastname: Huang
authors.affiliation: Department of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China.
authors.forename: Ruming
authors.initials: R
authors.lastname: Jiang
authors.affiliation: Department of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China.
authors.forename: Fengjie
authors.initials: F
authors.lastname: Deng
authors.affiliation: Department of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China. Electronic address: xiaoyongzhang1980@gmail.com.
authors.forename: Xiaoyong
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Department of Chemistry and the Tsinghua Center for Frontier Polymer Research, Tsinghua University, Beijing 100084, China.
authors.forename: Yen
authors.initials: Y
authors.lastname: Wei
keywords: Adsorption; Congo red; Functionalized SiO(2) nanocomposites; Mussel inspiration; SI-ATRP