نتایج جستجو برای: core shell microspheres
تعداد نتایج: 266330 فیلتر نتایج به سال:
Three kinds of N-doped mesoporous TiO₂ hollow spheres with different N-doping contents, surface area, and pore size distributions were prepared based on a sol-gel synthesis and combined with a calcination process. Melamine formaldehyde (MF) microspheres have been used as sacrificial template and cetyltrimethyl ammonium bromide (CTAB) or polyvinylpyrrolidone (PVP) was selected as pore-directing ...
Compared to single photoluminescence (PL) intensity-based sensors, dual-emitting-based ratiometric PL sensors are more preferable because the influence from PL fluctuation in the reagents and background PL can be reduced to a minimum. However, so far no report has been directed to the ratiometric PL detection of 5-fluorouracil (5-FU). In this study, for the first time, high-quality quantum dots...
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...
In recent years there has been increasing attention given to the utility of selfmicroemulsifying systems (SMES) for improving the gastrointestinal absorption of drugs with inadequate biopharmaceutical properties. Microencapsulation of those systems into polymeric matrix is one of the solidification techniques that allow formulation of solid self-microemulsifing formulations. Microcapsules with ...
metal nanoshells consists of a dielectric core surrounded by a thin noble metal shell, possess unique optical properties, which render nanoshells attractive for use in different technologies. this paper reports a facile method for growth of small gold nanoparticles on the functionalized surface of larger silica nanoparticles. mono-dispersed silica particles and gold nanoparticles were prepared ...
The active substrates in surface enhanced Raman scattering (SERS) spectroscopy were prepared through self-assembly of nanoparticles on functionalized glasses. Colloidal silver nanoparticles (Ag NPs) were prepared chemically in two different sizes by reduction of AgNO3 using trisodium citrate and sodium borohydride. Gold–silver core–shell nanoparticles were also prepared to compare between the o...
Ti3C2Tx MXene shows great potential in the application as microwave absorbers due to its high attenuation ability. However, excessively permittivity and self-stacking are main obstacles that constrain wide range of applications. To tackle these problems, herein, microspheres SiO2@Ti3C2Tx@CoNi with hydr...
The fabrication of reusable and biodegradation materials from renewable resources such as cellulose is essential for a sustainable world. The core-shell structured CdS-decorated TiO₂/Carbon microspheres (CdS/TiO₂/Carbon MS) photocatalyst was synthesized with controlled hydrolysis and a novel sonochemical method. It was prepared by using crosslinked microcrystalline cellulose as the core, tetrab...
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