نتایج جستجو برای: shell microspheres

تعداد نتایج: 63322  

2013
Jonathan M. Behrendt David Nagel Evita Chundoo Lois M. Alexander Damien Dupin Anna V. Hine Mark Bradley Andrew J. Sutherland

The efficient transport of micron-sized beads into cells, via a non-endocytosis mediated mechanism, has only recently been described. As such there is considerable scope for optimization and exploitation of this procedure to enable imaging and sensing applications to be realized. Herein, we report the design, synthesis and characterization of fluorescent microsphere-based cellular delivery agen...

Journal: :Journal of nanoscience and nanotechnology 2011
De-Hui Sun Ping Lu Ji-Lin Zhang Yan-Lin Liu Jia-Zuan Ni

In this paper, we describe the synthesis and characterization of a luminomagnetic microspheres with core-shell structures (denoted as Fe3O4@ SiO2 @SiO2-Tb(PABA)3). The luminomagnetic microspheres were characterized by field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), vibrating sample magnetometer (VSM),...

Journal: :Chemical communications 2011
Liang Sun Ying Qin Qingqing Cao Bingqing Hu Zhiwei Huang Ling Ye Xingfu Tang

TiO(2) microspheres constructed by well-crystallized faceted nanorods with high aspect ratios expose 100% photocatalytic reactive {111} facets on the spherical surface. The microspheres demonstrated excellent photocatalytic antibacterial activity towards Staphylococcus aureus due to effective suppression of photoinduced electron-hole pair recombination and active TiO(2)@˙OH core-shell structure.

Journal: :Energies 2022

The development of low-cost electrode materials with enhanced activity and favorable durability for hydrogen evolution reactions (HERs) is a great challenge. MoS2 an effective electrocatalyst unique layered structure. In addition, aluminosilica shells can not only provide more hydroxyl groups but also improve the catalyst as protective shell. Herein, we have designed hard-template route to synt...

Journal: :E-polymers 2021

Abstract A fast, simple, and energy-saving microwave-assisted approach was successfully developed to prepare carbon microspheres. The microspheres with a uniform particle size good dispersity were prepared using glucose as the raw material HCl dehydrating agent at low temperature (90°C) in an open system assistance of microwave heating. characterized by elemental analysis, XRD, SEM, FTIR, TG, R...

2012
Ajay Sud Shiva Dindyal

Microbubble technologies have recently gained acceptance as radiological molecular imaging or perfusion agents. These intravenous ultrasound contrast agents consist of gasfilled microspheres stabilized by a ‘shell’ layer which interfaces with a surrounding solvent pool. Development in the form of encapsulation with complex biocompatible polymer shell consisting of proteins, lipids and surfactan...

Silver microspheres were synthesized in an easy and environmentally friendly process by a sacrificial templating method. Carbonaceous microspheres were used as hard templates, which had been synthesized previously by a hydrothermal carbonization process. Silver spheres were synthesized by thermal removal of the core carbon component. The thickness of shell could be controlled by the concentr...

Journal: :Chemical communications 2010
Yiquan Wu I-Chien Liao Scott J Kennedy Jinzhi Du Jun Wang Kam W Leong Robert L Clark

This communication describes a single-step electrospraying technique that generates core-shell microspheres (CSMs) with encapsulated protein as the core and an amphiphilic biodegradable polymer as the shell. The protein release profiles of the electrosprayed CSMs showed steady release kinetics over 3 weeks without a significant initial burst.

2015
S. Marzorati J. M. Vasconcelos J. Ding M. Longhi Paula E. Colavita

Ultrasonic spray pyrolysis was used in a continuous flow apparatus for the template-free synthesis of ironand nitrogen-doped porous carbon materials. Solutions of glucose, histidine and Fe(CH3COO)2 were nebulized and pyrolyzed yielding carbon microspheres. Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS) and Focused Ion Beam (FIB) milling revealed that microspheres initi...

Journal: :Chemical communications 2006
Louis Moreau Fabio Ziarelli Mark W Grinstaff Philippe Barthélémy

Hollow microspheres featuring a hybrid lipid-cation multilamellar shell are prepared by hydration of a nucleoside based amphiphile with an aqueous solution containing either actinide or lanthanide salts. The physico-chemical data collected clearly indicate that the formation of these microspheres is a consequence of the following concomitant stabilizing factors: (i) hydrophobic interactions, (i...

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