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Showing 31-60 of 140 results for "333859" within Papers
Wonjin Jo et al.
Nanotechnology, 23(5), 055601-055601 (2012-01-13)
Bacterial flagella are particularly attractive bio-templates for nanotubes due to their tubular structures and small inner and outer diameters. In this work, flagella isolated from Salmonella typhimurium were used as templates for silica-mineralized nanotubes. The process involved pretreatment of flagella
Zhihai Cao et al.
Langmuir : the ACS journal of surfaces and colloids, 28(17), 7023-7032 (2012-04-12)
Mesoporous silica capsules with submicrometer sizes were successfully prepared via the interfacial hydrolysis and condensation reactions of tetraethoxysilane (TEOS) in inverse miniemulsion by using hydrophilic liquid droplets as template. The inverse miniemulsions containing pH-controlled hydrophilic droplets were first prepared via
Kun Du et al.
Biotechnology progress, 31(1), 42-47 (2014-11-08)
Multiple enzyme mixtures are attractive for the production of many compounds at an industrial level. We report a practical and novel approach for coimmobilization of two enzymes. The system consists of a silica microsphere core coated with two layers of
Bo Sun et al.
Journal of colloid and interface science, 378(1), 93-99 (2012-05-09)
Using the ABC copolymer silicone surfactant polydimethylsiloxane (PDMS)-graft-(polyethylene oxide (PEO)-block-propylene oxide (PPO)) (PSEP, Scheme 1a) as a template and tetraethoxysilane (TEOS) as a silica source, silica particles with various structures and morphologies (i.e., disordered spherical micellar aggregation, two-dimensional p6mm mesostructure
Bin Gao et al.
International journal of molecular medicine, 36(5), 1282-1290 (2015-12-10)
The aim of the present study was to examine the apoptosis of the hepatocellular carcinoma cell line, HepG2, induced by treatment with folic acid-conjugated silica-coated gold nanorods (GNRs@SiO2-FA) in combination with radiotherapy, and to determine the involvement of apoptosis-related proteins.
Fabrication of tunable silica-mineralized nanotubes using flagella as bio-templates
Jo W, et al.
Nanotechnology, 23(5) (2012)
Werner E G Müller et al.
Journal of tissue engineering and regenerative medicine, 9(11), E39-E50 (2013-04-16)
Polymeric silica is formed from ortho-silicate during a sol-gel formation process, while biosilica is the product of an enzymatically driven bio-polycondensation reaction. Both polymers have recently been described as a template that induces an increased expression of the genes encoding
Suling Zhao et al.
Journal of colloid and interface science, 388(1), 40-46 (2012-09-12)
Monodispersed silica particles with bimodal size distribution were successfully prepared through adding an ethanol (EtOH) solution containing tetraethylorthosilicate (TEOS) dropwise into an ammonia EtOH solution at a constant low rate. The effects of the reaction parameters such as ammonia/ethanol ratio
Qi An et al.
Soft matter, 11(34), 6859-6865 (2015-08-04)
A "nano-net" superstratum strategy is developed to stabilize layer-by-layer (LbL) films that incorporate nanoparticles. The superstratum immobilizes silica, gold, or magnetic nanoparticles and at the same time is permeable to small molecules. Unlike most strategies to stabilize LbL multilayers reported
Bo Zhang et al.
Colloids and surfaces. B, Biointerfaces, 131, 129-135 (2015-05-20)
Biotemplating is an effective strategy to obtain morphology-controllable materials with structural specificity, complexity, and corresponding unique functions. Herein we take advantage of the unique heavy-metal-ion biosorption behavior of cyanobacteria cells to fabricate Fe3O4/cell composites. Meanwhile, cyanobacteria cells served as a
Jiajia Yang et al.
Analytica chimica acta, 853, 311-319 (2014-12-04)
Bisphenol A (BPA) imprinted sponge mesoporous silica was synthesized using a combination of semi-covalent molecular imprinting and simple self-assembly process. The molecularly imprinted sponge mesoporous silica (MISMS) material obtained was characterized by FT-IR, scanning electron microscopy, transmission electron microscopy, and
Zahra Sharifalhoseini et al.
Journal of colloid and interface science, 455, 110-116 (2015-06-10)
The pure phase of the ZnO nanoparticles (NPs) as anticorrosive pigments was synthesized by the sonication method. The surfaces of the sono-synthesized nanoparticles were covered with the protective silica layer. The durability of the coated and uncoated ZnO NPs in
Víctor Sebastian et al.
Nanoscale, 6(21), 13228-13235 (2014-09-27)
Compared to freestanding nanoparticles, supported nanostructures typically show better mechanical stability as well as ease of handling. Unique shapes such as core-shells, raspberries and crescents have been developed on supported materials to gain improved chemical and optical properties along with
Sathiamurthi Perumal et al.
Journal of the mechanical behavior of biomedical materials, 52, 131-138 (2015-04-30)
The success of a tissue engineering scaffold depends on a fine balance being achieved between the physicochemical and biological properties. This study attempts to understand the influence of silica concentration on the functional properties of collagen-silica (CS) composite scaffolds for
O N Ponamoreva et al.
Biosensors & bioelectronics, 67, 321-326 (2014-09-10)
The methylotrophic Pichia angusta VKM Y-2559 and the oleaginous Cryptococcus curvatus VKM Y-3288 yeast cells were immobilized in a bimodal silica-organic sol-gel matrix comprised of tetraethoxysilane (TEOS), the hydrophobic additive methyltriethoxysilane (MTES) and the porogen polyethylene glycol (PEG). Under carefully
Jani Holopainen et al.
Nanotechnology, 26(2), 025301-025301 (2014-12-17)
A needleless electrospinning setup named 'Needleless Twisted Wire Electrospinning' was developed. The polymer solution is electrospun from the surface of a twisted wire set to a high voltage and collected on a cylindrical collector around the wire. Multiple Taylor cones
Deposition of thick TEOS PECVD silicon oxide layers for integrated optical waveguide applications
Bulla DAP and Morimoto NI
Thin Solid Films, 334(1-2), 60-64 (1998)
Rajendra K Singh et al.
Journal of biomedical materials research. Part A, 100(7), 1734-1742 (2012-03-27)
Magnetic nanoparticles (MNPs) are considered highly useful in therapeutic and diagnostic applications. However, MNPs require surface modification to promote dispersibility in aqueous solutions and thus biocompatibility. In this article, the authors modified MNPs with inorganic silica layer to create silica-coated
Ángela A Beltrán-Osuna et al.
Langmuir : the ACS journal of surfaces and colloids, 28(25), 9700-9706 (2012-05-23)
In this work, a new antifouling silica hydrogel was developed for potential biomedical applications. A zwitterionic polymer, poly(carboxybetaine methacrylate) (pCBMA), was produced via atom-transfer radical polymerization and was appended to the hydrogel network in a two-step acid-base-catalyzed sol-gel process. The
Xiaoli Gu et al.
RSC advances, 5(52), 41377-41384 (2015-08-11)
Surface molecularly imprinted polymers (MIP@SBA-15) imprinted on the surface of hybrid nanostructured organic/inorganic materials (SBA-15) were prepared for the selective extraction and detection of baicalin (BA) from biological samples. The surface morphologies and characteristics of the imprinted and non-imprinted polymers
Yuan Liao et al.
ACS applied materials & interfaces, 6(18), 16035-16048 (2014-08-26)
With modest temperature demand, low operating pressure, and high solute rejection, membrane distillation (MD) is an attractive option for desalination, waste treatment, and food and pharmaceutical processing. However, large-scale practical applications of MD are still hindered by the absence of
Xuebin Ke et al.
Nanoscale research letters, 9(1), 2492-2492 (2015-06-20)
Metal-enhanced fluorescence (MEF) as a newly recognized technology has been attracting considerable attention and is widely used in fluorescence-based technology. In this paper, we reported a novel distance-dependent MEF and metal-enhanced singlet oxygen generation phenomenon based on silica-coated gold nanorods
Mehrdad Mohammadpour et al.
Cornea, 33(7), 738-743 (2014-06-03)
The aim of this study was to investigate transmission of topical silicate nanoparticles (SiNPs) through the corneal stroma, anterior chamber, and vitreous fluids by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and inductively coupled plasma atomic emission spectrometry (ICP-AES)
Xiao-Ming Zhu et al.
International journal of nanomedicine, 7, 953-964 (2012-03-07)
To compare the cellular uptake efficiency and cytotoxicity of aminosilane (SiO(2)-NH(2))-coated superparamagnetic iron oxide (SPIO@SiO(2)-NH(2)) nanoparticles with three other types of SPIO nanoparticles coated with SiO(2) (SPIO@SiO(2)), dextran (SPIO@dextran), or bare SPIO in mammalian cell lines. Four types of monodispersed
Lei Zhou et al.
Nature communications, 6, 6938-6938 (2015-04-25)
The identification of potential diagnostic markers and target molecules among the plethora of tumour oncoproteins for cancer diagnosis requires facile technology that is capable of quantitatively analysing multiple biomarkers in tumour cells and tissues. Diagnostic and prognostic classifications of human
Caitlyn M Gatley et al.
Molecules (Basel, Switzerland), 20(6), 9616-9639 (2015-05-29)
While H2O2 is a powerful oxidant, decomposing into environmentally benign H2O and O2, a catalyst is often required for reactions with H2O2 to proceed at synthetically useful rates. Organotellurium and organoselenium compounds catalyze the oxidation of halide salts to hypohalous
Wanyuan Gui et al.
Chemphyschem : a European journal of chemical physics and physical chemistry, 16(3), 607-613 (2014-12-11)
A pH-controlled delivery system based on mesoporous silica nanoparticles (MSNs) was constructed for dual-cargo selective release. To achieve a better controlled-release effect, a modified sol-gel method was employed to obtain MSNs with tunable particle and pore sizes. The systems selectively
Xiaole Zhang et al.
Journal of colloid and interface science, 448, 189-196 (2015-03-04)
In this work, a facile one-pot strategy was proposed for the synthesis of C18-functionalized core-shell magnetic mesoporous silica composite (Fe3O4/mSiO2-C18). The Fe3O4/mSiO2-C18 composite, with an average size of 80 nm and a functionalized mesoporous silica shell of about 30 nm
Maofang He et al.
Talanta, 147, 437-444 (2015-11-26)
In this paper, iminodiacetic acid-Cu(II) functionalized Fe3O4@SiO2 magnetic nanoparticles were prepared and used as new adsorbents for magnetic solid phase extraction (MSPE) of six monoamine neurotransmitters (MNTs) from rabbit plasma. The selective enrichment of MNTs at pH 5.0 was motivated
Mamdoh R Mahmoud et al.
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine, 91, 141-154 (2014-06-18)
A novel mesoporous silica-coated ferrocyanide (MSCFC) composite was successfully synthesized and evaluated as a dual-function material for simultaneous removal of (137)Cs(+) cations and (99)TcO4(-) anions from aqueous solutions. Sorption behavior of both radionuclides on MSCFC under different experimental conditions has
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