Fabrication of silica hollow particles using Escherichia coli as a template

Nomura, Toshiyuki; Morimoto, Yasuo; Tokumoto, Hayato; Konishi, Yasuhiro

doi:10.1016/j.matlet.2008.04.035

Cited by 43 publications

(24 citation statements)

References 15 publications

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“…HSPs have also been synthesized by using organisms such as viruses and bacteria [ 36 , 37 , 38 ]. When using Gram-negative bacteria such as E. coli , water inside the bacteria acts as an initiator for hydrolysis of the silica precursor, TEOS.…”

Section: Synthesismentioning

confidence: 99%

Hollow Silica Particles: Recent Progress and Future Perspectives

Sharma

Polizos

2020

Nanomaterials

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Hollow silica particles (or mesoporous hollow silica particles) are sought after for applications across several fields, including drug delivery, battery anodes, catalysis, thermal insulation, and functional coatings. Significant progress has been made in hollow silica particle synthesis and several new methods are being explored to use these particles in real-world applications. This review article presents a brief and critical discussion of synthesis strategies, characterization techniques, and current and possible future applications of these particles.

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Section: Synthesismentioning

confidence: 99%

Hollow Silica Particles: Recent Progress and Future Perspectives

Sharma

Polizos

2020

Nanomaterials

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“…Biological nanoparticles, such as DNA, RNA, viruses, bacteria, and peptides, have been used as templates in material synthesis and structuring, for the advantages of simplified processing and environmental sustainability [468]. Examples include CdSe nanoparticle synthesis in a cage-shaped protein [304], Co 3 O 4 and Cr 2 O 3 hollow microspheres synthesis using yeast [17,468], silica hollow particle synthesis using Escherichia coli [303], enzyme-mediated ceramic synthesis [423], and converting natural photonic crystals in beetles into organic structures via a sol-gel bio-templating route [111].…”

Section: Bio-assistedmentioning

confidence: 99%

Application of Nanoparticles in Manufacturing

Hu¹,

Tuck²,

Wildman³

et al. 2015

Handbook of Nanoparticles

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With the development of nanoscience and nanotechnology, manufacturing is undergoing revolutionary changes. Nanoparticles, due to their novel and often enhanced properties, are now more and more used in manufacturing. In this chapter, the state-of-the-art application of nanoparticles in manufacturing is reviewed. The contents include five parts: (a) role of nanoparticles in manufacturing, (b) manufacturing methods, (c) applications, (d) challenges, and (e) conclusions. The roles of nanoparticles are divided into three categories: (i) building blocks, being the major component of a manufactured product by solid-state or colloidal nanoparticle consolidation; (ii) functional filler, as an addition for functionality, such as property improver, catalyst, stimuli-responsive, sensing, imaging, and carrier; and (iii) nanocomposites for multifunctionality. Various manufacturing methods and novel trends are summarized in this chapter, including top-down and bottom-up, from 2D to 3D, from cleanroom to desktop, 3D printing, and bio-assisted methods, such as DNA origami. Direct applications in areas of flexible electronics, molecular electronics, solar cells, construction industry, water treatment, and biomedical devices are presented. The associated challenges including nanoparticle safety issue, sustainable manufacturing, economic issue, and scale-up are discussed. Role of Nanoparticles in ManufacturingWith the development of nanoscience and nanotechnology, manufacturing is undergoing revolutionary changes. Nanoparticles, due to their novel and often enhanced properties, have more and more been used in various manufacturing applications. Their role can generally be divided into three categories: (a) building blocks, (b) functional filler, and (c) nanocomposites for multifunctionality, which is summarized in Table 1. Building BlockNanoparticles sometimes act like the bricks in a house-building process to be the main component of a manufactured product. They can be consolidated via solid-and liquid-based methods. Solid-State Nanoparticle ConsolidationSolid-state metallic, ceramic, amorphous, and compound particles can be thermomechanically processed to form bulk 2D/3D structures with desired strength and level of densification (even full densification is possible). Reported methods include powder compact forging/extrusion, equal channel angular extrusion/ pressing, and hot pressing/sinter forging combined with conventional heating, laser sintering, microwave sintering, electric discharge sintering, or spark plasma sintering [33,255,278,306,425,426,476,492]. Particles with a narrow size distribution and spherical shape are desired to achieve low pore-to-

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“…Inorganic hollow particles are more remarkable due to their excellent properties such as low density, specific surface area, thermal insulation, and permeability [28]. Several methods have been used to prepare hollow particles such as a polymer bead template method [29], an inorganic template method [30], a sol-gel method used for surfactant stabilized emulsions [31], spray drying [32], a spray precipitation method [33], and spray pyrolysis [34].…”

Section: Introductionmentioning

confidence: 99%

Investigation of In Vitro Drug Release from Porous Hollow Silica Nanospheres Prepared of ZnS@SiO₂Core-Shell

Vafayi

Gharibe

2013

Bioinorganic Chemistry and Applications

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In this contribution, porous hollow silica nanoparticles using inorganic nanosized ZnS as a template were prepared. The hydrothermal method was used to synthesize pure ZnS nanospheres material. The ZnS@SiO2 core-shell nanocomposites were prepared using a simple sol-gel method successfully. The hollow silica nanostructures were achieved by selective removal of the ZnS core. The morphology, structure, and composition of the product were determined using powder X-ray diffraction (XRD), emission scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Fourier transform infrared spectroscopy (FT-IR). The results demonstrated clearly that the pure ZnS nanoparticles are in a spherical form with the average size of 40 nm and correspond with zinc blend structure. The porous hollow silica nanoparticles obtained were exploited as drug carriers to investigate in vitro release behavior of amoxicillin in simulated body fluid (SBF). UV-visible spectrometry was carried out to determine the amount of amoxicillin entrapped in the carrier. Amoxicillin release profile from porous hollow silica nanoparticles followed a three-stage pattern and indicated a delayed release effect.

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Fabrication of silica hollow particles using Escherichia coli as a template

Cited by 43 publications

References 15 publications

Hollow Silica Particles: Recent Progress and Future Perspectives

Hollow Silica Particles: Recent Progress and Future Perspectives

Application of Nanoparticles in Manufacturing

Investigation of In Vitro Drug Release from Porous Hollow Silica Nanospheres Prepared of ZnS@SiO₂Core-Shell

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Fabrication of silica hollow particles using Escherichia coli as a template

Cited by 43 publications

References 15 publications

Hollow Silica Particles: Recent Progress and Future Perspectives

Hollow Silica Particles: Recent Progress and Future Perspectives

Application of Nanoparticles in Manufacturing

Investigation of In Vitro Drug Release from Porous Hollow Silica Nanospheres Prepared of ZnS@SiO2Core-Shell

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Product

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Investigation of In Vitro Drug Release from Porous Hollow Silica Nanospheres Prepared of ZnS@SiO₂Core-Shell