Biomimetic Dopamine Derivative for Selective Polymer Modification of Halloysite Nanotube Lumen

Yah, Weng On; Xu, Hang; Soejima, Hiroe; Ma, Wei; Lvov, Yuri; Takahara, Atsushi

doi:10.1021/ja303340f

Cited by 254 publications

(184 citation statements)

References 46 publications

(53 reference statements)

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“…39,56,57 The increasing interest in these nanomaterials could involve, in the long term, the release and accumulation of the nanoclay in the environment and could therefore cause damage to human health or plants; therefore, it is important to study the toxicity of halloysite nanotubes towards living organisms.…”

Section: 55mentioning

confidence: 99%

Halloysite nanotubes as support for metal-based catalysts

Massaro,

Colletti,

Lazzara

et al. 2017

J. Mater. Chem. A

248

106

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Halloysite nanotubes (HNTs) are clay minerals with a hollow nanotubular structure. There is growing interest in these nanomaterials, due to their biocompatibility, potential applications and availability. The surface Moreover, the presence of an empty lumen opens new perspectives for the production of nanoarchitectures with synergistic catalytic effects, due to the increase in local concentrations and confinement. The main focus of this review is the research on modified halloysite nanotubes for the preparation of valuable supports for metal nanoparticles and their applications in catalytic processes.

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Section: 55mentioning

confidence: 99%

Halloysite nanotubes as support for metal-based catalysts

Massaro,

Colletti,

Lazzara

et al. 2017

J. Mater. Chem. A

248

106

View full text Add to dashboard Cite

show abstract

“…The production process and reaction mechanism of superhyophobic halloysite nanotube (HNTs). (a) Surface modification procedure of HNTs; (b) Chemical reaction mechanism: 1 Illustration of oxidation polymerization and probable connection mode of dopamine on HNTs [33]; 2 The mechanism of grafting octadecylamine (ODA) to obtain roughness surface via Michael addition and Schiff based reactions; 3 The formation of Vitamin M (VM) tetramer and the resultant columnar structure.…”

Section: Micromorphology and Surface Chemical Composition Analysismentioning

confidence: 99%

Preparation of Robust Superhydrophobic Halloysite Clay Nanotubes via Mussel-Inspired Surface Modification

et al. 2017

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Abstract:In this study, a novel and convenient bio-inspired modification strategy was used to create stable superhydrophobic structures on halloysite clay nanotubes (HNTs) surfaces. The polydopamine (PDA) nanoparticles can firmly adhere on HNTs surfaces in a mail environment of pH 8.5 via the oxidative self-polymerization of dopamine and synthesize a rough nano-layer assisted with vitamin M, which provides a catechol functional platform for the secondary reaction to graft hydrophobic long-chain alkylamine for preparation of hierarchical micro/nano structures with superhydrophobic properties. The micromorphology, crystal structure, and surface chemical composition of the resultant superhydrophobic HNTs were characterized by field emission scanning electron (FE-SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). The as-formed surfaces exhibited outstanding superhydrophobicity with a water contact angle (CA) of 156.3 ± 2.3 • , while having little effect on the crystal structures of HNTs. Meanwhile, the resultant HNTs also showed robust stability that can conquer various harsh conditions including strong acidic/alkaline solutions, organic solvents, water boiling, ultrasonic cleaning, and outdoor solar radiation. In addition, the novel HNTs exhibited excellent packaged capabilities of phase change materials (PCMs) for practical application in thermal energy storage, which improved the mass fractions by 22.94% for stearic acid and showed good recyclability. These HNTs also exhibited good oil/water separation ability. Consequently, due to the superior merits of high efficiency, easy operation, and non-toxicity, this bionic surface modification approach may make HNTs have great potentials for extensive applications.

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“…The inner and outer surfaces can be modified independently in some cases. 80) To utilize nanotubes as building blocks, the flexibility of nanotubes is very important. Several nanotubes with quite high aspect ratio and thin tubular wall (e.g.…”

Section: Nanotubesmentioning

confidence: 99%

Effective use of flexible low-dimensional colloidal particles and colloidal crystals for the control of hierarchically porous materials

Kuroda

2015

J. Ceram. Soc. Japan

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Hierarchically porous materials are useful materials because characteristics of pores in various length scales (e.g., micro-, meso-, and macropores) can synergistically be integrated in a material. In this review, preparation of hierarchically porous materials by templating methods is summarized from the viewpoint of flexibilities of colloidal particles and colloidal assemblies as building blocks and templates, respectively. Low-dimensional colloidal particles, such as nanosheets and nanotubes, are used as flexible building blocks to form three-dimensional networks on templates with few defects. Because such colloidal particles can have interand intraparticle pores, their assembly on templates is effective to form pores in various length scales. Colloidal crystals, assemblies of uniform colloidal particles, have been used as templates of macroporous and hierarchically porous materials. Recently, the use of colloidal crystals as flexible templates is reported and attracts much attention. A stress due to confined growth of gold within the interstices of the colloidal crystals causes their structural changes, retaining their periodic structure, which direct one-or two-dimensional growth of gold. It is regarded as a novel concept for the preparation of hierarchical nanostructured materials with high crystallinity. The utilization of flexibilities of colloidal particles and colloidal assemblies is promising for the creation of hierarchically porous materials with unique nanostructures.

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Biomimetic Dopamine Derivative for Selective Polymer Modification of Halloysite Nanotube Lumen

Cited by 254 publications

References 46 publications

Halloysite nanotubes as support for metal-based catalysts

Halloysite nanotubes as support for metal-based catalysts

Preparation of Robust Superhydrophobic Halloysite Clay Nanotubes via Mussel-Inspired Surface Modification

Effective use of flexible low-dimensional colloidal particles and colloidal crystals for the control of hierarchically porous materials

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