A bioinspired strategy for surface modification of silica nanoparticles

Tian, Jianwen; Zhang, Haoxuan; Liu, Meiying; Deng, Fengjie; Huang, Hongye; Wan, Qing; Li, Zhen; Wang, Ke; He, Xiaohui; Zhang, Xiaoyong; Wei, Yen

doi:10.1016/j.apsusc.2015.09.171

Cited by 58 publications

(24 citation statements)

References 76 publications

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“…Han et al [27] have developed an adhesive and transferable free-standing film with dual function of osteoinductivity and antibacterial activity, which is obtained by sequentially assembling vancomycin immobilized oxidized sodium alginate and dexamethasone encapsulated chitosan-coated BSA nanoparticles on a poly-dopamine layer. Our previous reports also have demonstrated that surface modification of different materials via mussel-inspired chemistry and Michael addition reaction [28][29][30][31][32][33][34][35][36][37][38][39][40][41].…”

Section: Introductionmentioning

confidence: 93%

Enhanced removal capability of kaolin toward methylene blue by mussel-inspired functionalization

et al. 2016

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Adsorption is an effective and commonly adopted method for removal of organic pollutants from environment. In this work, we described the synthesis and the adsorption behavior of poly(sodium p-styrenesulfonate hydrate) (PSPSH)-modified kaolin, which was obtained by combination of mussel-inspired chemistry and Michael addition reaction. The amino-terminated PSPSH was synthesized by free radical polymerization using cysteamine hydrochloride as the chain transfer agent and sodium p-styrenesulfonate hydrate as the monomer. Raw kaolin and PSPSH-modified kaolin were characterized using several techniques including transmission electron microscopy, Fourier transform infrared spectroscopy, thermal gravimetric analysis, and X-ray photoelectron spectroscopy in detail. The adsorption of methylene blue onto modified kaolin from aqueous solution was investigated, in which the effects of contact time, temperature, solution pH, and initial methylene blue concentration were studied. The experiment data were analyzed using two common adsorption models: Langmuir and Freundlich isotherm models. The kinetic adsorption data were analyzed using pseudo-first-order, pseudo-second-order, and intraparticle diffusion model. The values of thermodynamics constants such as entropy change (DS 0 ), enthalpy change (DH 0 ) and Gibbs free energy (DG 0 ) were also determined. The modified kaolin showed favorable dispersibility and convenient separation, high efficiency, and good regeneration capability in the removal of methylene blue from solution.Qiang Huang and Meiying Liu have contributed equally to this work.

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Section: Introductionmentioning

confidence: 93%

Enhanced removal capability of kaolin toward methylene blue by mussel-inspired functionalization

et al. 2016

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“…For example, the amino and thiol contained compounds can be attached on the PDA thin films coated CNT, graphene oxides as the ad-layers through Michael addition reaction. [26,27,[51][52][53][54][55] On the other hand, the polymerization initiators could also be immobilized on PDA thin films modified materials that can be used for grafting of polymers through light irradiation initiated polymerization, atom transfer radical polymerization (ATRP), reversible addition-fragmentation chain transfer (RAFT) polymerization and single-electron transfer living radical polymerization (SET-LRP). [53,[56][57][58][59][60][61][62][63][64] In this work, the carboxymethyl chitosan with amino, carboxyl and hydroxyl groups can be facilely conjugated with CNT through the Michael addition reaction between the amino group of CS and PDA thin films, which were coated on CNT via self polymerization of dopamine under weak alkaline solution.…”

Section: Desorption and Repeated Usementioning

confidence: 99%

Facile preparation of carbon nanotubes based carboxymethyl chitosan nanocomposites through combination of mussel inspired chemistry and Michael addition reaction: Characterization and improved Cu2+ removal capability

Zeng

Liu

et al. 2016

Journal of the Taiwan Institute of Chemical Engineers

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The adsorption removal of heavy metal ions from aqueous solution using polymer nanocomposites has attracted great interest because of their advantages from both nanomaterials and polymers. In this work, a facile and novel method has been developed for surface modification of multi-walled carbon nanotubes (CNT) with carboxymethyl chitosan via combination of mussel inspired chemistry and Michael addition reaction. To obtain resultant CNT based chitosan nanocomposites (CNT-PDA-CS), pristine CNT were first coated with polydopamine (PDA) thin films through self polymerization of dopamine under alkaline aqueous solution. Then PDA modified CNT were further functionalized with carboxymethyl chitosan (CS) via Michael addition reaction. The successful preparation of CNT-PDA-CS nanocomposites was ascertained by a series of characterization techniques including transmission electron microscopy, Fourier transform infrared spectroscopy, thermal gravimetric analysis and X-ray photoelectron spectrometry. The utilization of the resultant CNT-PDA-CS for removal of Cu 2+ from aqueous solution was also examined in this work. The results showed that CNT-PDA-CS exhibited obviously enhanced Cu 2+ removal capability as compared with the unmodified CNT. Considered the versatility of mussel inspired chemistry, the method described in this work should be a general route for fabricating highly efficient adsorbents, which should be of great interest for environmental applications.CNT-PDA-CS for Cu 2+ removal was examined. Because of the existence of functional groups such as carboxyl groups, amino groups and hydroxyl groups on the surface of CNT based nanocomposites, the CNT-PDA-CS exhibited obviously enhanced adsorption capability towards copper ions as compared with the unmodified CNT. Taken together, we have developed a novel, simple and universal strategy to prepare CNT based nano-adsorbents with high efficiency for removal of heavy metal ions from aqueous solution.These mussel inspired strategy should be a general method to fabricate various nanocomposites for environmental applications because of the universal and strong adhesion of PDA towards almost any materials and surface. [39,40] Scheme 1 the preparation of CNT-PDA-CS nanocomposites via a combination of mussel-inspired chemistry and a Michael addition reaction. Experiment Materials and characterizationDopamine hydrochloride was purchased from Sangon Biotech. Co., Ltd (Shanghai, China). CNT (> 95%, diameter of 30 to 50 nm) were purchased from Sino Nanotech Ltd. (Beijing, China). Tris (hydroxymethyl) aminomethane (Tris) and carboxylated chitosan are obtained from Aladdin Company (Shanghai China). All the other reagents are of analytical grade and used without further purification. Solution pH was monitored with a pH meter (Mettler-Toledo International Inc., China), fitted with a combined glass electrode (0.01 pH 2.4. Preparation of CNT-PDA-CS 200 mg of CNT-PDA was dispersed in Tris buffer solution (10 mM, pH = 8.5). 200 mg of chitosan was then added into the solution and stirred fo...

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“…Different strategies based on non-covalent self-assembly, covalent linkage, polymerization and formation of dynamic bonds have been well established. [7,45,[50][51][52][53][54][55][56][57] However, most of these strategies also show some drawbacks, including lack of functional, poor stability and complexity experimental procedure.…”

Section: Introductionmentioning

confidence: 99%

Preparation of PEGylated polymeric nanoprobes with aggregation-induced emission feature through the combination of chain transfer free radical polymerization and multicomponent reaction: Self-assembly, characterization and biological imaging applications

Wan

Liu

Mao

et al. 2017

Materials Science and Engineering: C

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Self-assembly of amphiphilic luminescent copolymers is a general route to fabricate fluorescent polymeric microparticles (FPMs). In this work, the FPMs with aggregation-induced emission (AIE) feature were fabricated via the combination of the chain transfer free radical polymerization and "one-pot" multicomponent reaction, which conjugated the aldehyde-containing AIE active dye AIE (CHO-An-CHO) and amino-terminated hydrophilic polymer (ATPPEGMA) using mercaptoacetic acid (MTA) as the "lock" molecule. The structure, chemical compositions, optical properties as well as biological properties of the PPEGMA-An-PPEGMA FPMs were characterized and investigated by means of a series of techniques and experiments in detail. We demonstrated the final copolymers showed amphiphilic properties, strong yellow fluorescence and high water dispersibility. Biological evaluation suggested that PPEGMA-An-PPEGMA FPMs possess low cytotoxicity and can be used for cell imaging. More importantly, many other AIE active FPMs are expected to be fabricated using the similar strategy because of the good substrate and monomer applicability of the multicomponent reaction and chain transfer living radical polymerization. Therefore, we could conclude that the strategy described in this work should be of great interest for fabrication of multifunctional AIE active nanoprobes for biomedical applications.

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A bioinspired strategy for surface modification of silica nanoparticles

Cited by 58 publications

References 76 publications

Enhanced removal capability of kaolin toward methylene blue by mussel-inspired functionalization

Enhanced removal capability of kaolin toward methylene blue by mussel-inspired functionalization

Facile preparation of carbon nanotubes based carboxymethyl chitosan nanocomposites through combination of mussel inspired chemistry and Michael addition reaction: Characterization and improved Cu2+ removal capability

Preparation of PEGylated polymeric nanoprobes with aggregation-induced emission feature through the combination of chain transfer free radical polymerization and multicomponent reaction: Self-assembly, characterization and biological imaging applications

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