General and Facile Syntheses of Metal Silicate Porous Hollow Nanostructures

Zheng, Jun; Wu, Binghui; Jiang, Zhiyuan; Kuang, Qin; Fang, Xiaoliang; Xie, Zhaoxiong; Huang, Rong‐Bin; Zheng, Lan‐Sun

doi:10.1002/asia.200900561

Cited by 65 publications

(60 citation statements)

References 44 publications

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“…[28][29][30][31][32] Remarkably, these materials possessed the same mineral elements as those of previously reported magnesium silicate-based bioceramics and composite scaffolds. [28][29][30][31][32] Remarkably, these materials possessed the same mineral elements as those of previously reported magnesium silicate-based bioceramics and composite scaffolds.…”

Section: Introductionmentioning

confidence: 74%

Achieving accelerated osteogenic differentiation via novel magnesium silicate hollow spheres

Wang

Liu

et al. 2015

New J. Chem.

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Nanomaterials have been widely used as multifunctional scaffolds and carriers in bone tissue engineering resulting from their versatile functionalities. Here, a classical Stöber method that combined the merits of an organic reagent-free hydrothermal route was introduced to rationally design and synthesize novel magnesium silicate hollow spheres (denoted as MgSiO 3 hollow spheres). Due to the presence of mineral elements including silicon and magnesium, these well-prepared hollow structures exhibited positive effects in accelerated osteogenic differentiation. By using an osteoblastic cell line as example, namely MC3T3-E1, we investigated the in vitro toxicity of these hollow spheres via various classical methods including MTT assay, LDH assay, apoptosis, and morphology observation. Results indicated that these materials revealed extremely low systemic toxicity and high bio-compatibility. Moreover, cellular internalization observation demonstrated that these hollow spheres could be taken up by MC3T3-E1 cells in a time-dependent manner. This vigorous process of endocytosis could provide more raw materials for the following intracellular mineralization and bone regeneration. Results of ALP analysis and alizarin red staining indicated that these hollow spheres could clearly promote osteoblast differentiation and mineralization in a dose-dependent manner. Our study suggested that these magnesium silicate hollow spheres could act as promising candidates for enhanced bone regeneration and bone tissue engineering.

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Section: Introductionmentioning

confidence: 74%

Achieving accelerated osteogenic differentiation via novel magnesium silicate hollow spheres

Wang

Liu

et al. 2015

New J. Chem.

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“…[1][2][3][4][5][6] Such properties mainly depend on the introduced metal species. Many metal ions embedded in mesoporous silica materials have been reported, [7][8][9][10][11][12][13][14][15] such as Fe 3+ , Ni 2+ , Zn 2+ , Cu 2+ , Mg 2+ and Nb 5+ .…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Cu–Ag bimetal nanotube-based copper silicates for enhancement of antibacterial activities

Fang

Zheng

et al. 2015

RSC Adv.

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A novel Cu-Ag bimetal antibacterial system is reported. In this Cu-Ag bimetal system, copper silicate nanotubes (CSNTs) and copper silicate nanotube-assembled hollow nanospheres (CSNAHSs) with high BET surface area, unique hollow structure and strong antibacterial activity, were adopted as a carrier for loading silver ions to fabricate the copper-silver bimetal antibacterial agents (designated as Ag + /CSNTs and Ag + /CSNAHSs). Additionally, the antibacterial activity of Ag + /CSNTs and Ag + /CSNAHSs was investigated against Gram-negative bacteria (Escherichia coli BL21 and Escherichia coli JM109) andGram-positive bacteria (Staphylococcus aureus and Bacillus subtilis). The results demonstrated that both silver-loaded copper silicates were highly effective against the four types of bacterial strains, and the Ag + /CSNAHSs showed a stronger antibacterial ability than Ag + /CSNTs due to their more silver loading contents. More importantly, a synergistic effect of copper ions and silver ions on the inhibition of the bacterial growth was observed in our bimetal antibacterial system.

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“…(5)(6), while NH 3 is generated by the reaction shown in Eq. (7). The nanoparticles congregate around the gas and stick to each other; once the gas escapes, the hollow sphere remains.…”

Section: Vocsmentioning

confidence: 99%

“…Due to their excellent properties, high chemical and thermal stability, high specific surface area, high porosity, low density, and good biocompatibility [6], hollow nanomaterials show promise in environmental remediation applications. For example, hollow silicate nanostructures showed an excellent ability to remove Pb 2+ from contaminated water owing to their large specific surface area and unique structure [7]. Meanwhile, Liu et al [8] found that hollow CuO spheres showed excellent and rapid photocatalytic degradation of dyes, especially for methyl blue (MB).…”

Section: Introductionmentioning

confidence: 98%

Applications of hollow nanomaterials in environmental remediation and monitoring: A review

Zhang

Wang

et al. 2015

Front. Environ. Sci. Eng.

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Hollow nanomaterials have attracted significant attention because of their high chemical and thermal stability, high specific surface area, high porosity, low density, and good biocompatibility. These state-of-the-art nanomaterials have been shown to efficiently adsorb heavy metals, and volatile hazardous substances, photodegrade persistent organic pollutants, and other compounds, and inactivate bacteria. Such properties have enabled the use of these materials for environmental remediation, such as in water/wastewater treatment, soil remediation, air purification, and substance monitoring, etc. Hollow nanomaterials showed higher photocatalytic activity than those without hollow structure owing to their high active surface area, reduced diffusion resistance, and improved accessibility. And, the Doping method could improve the photocatalytic performance of hollow nanomaterials further under visible light. Moreover, the synthetic mechanisms and methods of these materials are important because their size and morphology help to determine their precise properties. This article reviews the environmental applications and potential risks of these materials, in addition to their syntheses. Finally, an outlook into the development of these materials is provided.

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General and Facile Syntheses of Metal Silicate Porous Hollow Nanostructures

Cited by 65 publications

References 44 publications

Achieving accelerated osteogenic differentiation via novel magnesium silicate hollow spheres

Achieving accelerated osteogenic differentiation via novel magnesium silicate hollow spheres

Fabrication of Cu–Ag bimetal nanotube-based copper silicates for enhancement of antibacterial activities

Applications of hollow nanomaterials in environmental remediation and monitoring: A review

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