Papers – Page 68 – TechConnect Briefs

Synthesis of Nanocrystalline VOx/MgO Aerogels and Their Application for Destructive Adsorption of CF2Cl2

Ilyina E.V., Mishakov I.V., Vedyagin A.A., Bedilo A.F., Klabunde K.J., Boreskov Institute of Catalysis, RU

Nanocrystalline VOx/MgO is extensively studied as a potential catalyst and adsorbent. In this commutation we shall report further advances to the recently developed method for synthesis of binary VOx/MgO aerogels by hydrolysis of the V [...]

Synthesis of nanocrystalline (Zn1-xCox)Al2O4 solid solution: structural and optical properties

Fernández-Osorio A., Hernández- Mendoza D., Pineda-Villanueva E., Universidad Nacional Autonoma de Mexico, MX

New inorganic pink pigments based on nanocrystalline (Zn1-xCox)Al2O4 solid solution, were prepared using the hydrothermal method, obtaining nanoparticles below 8 nm. The spinel ZnAl2O4 was chosen as host hue to introduce Co(II) ions, because zinc [...]

Preparation of Nanosize Copper Recycled from an Electroplating Wastewater

Huang C.H., Wang H.P., National Cheng Kung University, TW

Chemical structure of copper recycled directly from an electroplating (EP) wastewater for preparing core-shell nanoparticles has been studied by X-ray based spectroscopy in the present work. Experimentally, about 40-50% of copper in the EP wastewater [...]

Preparation of nitrogen-doped mesoporous TiO2 with a room-temperature ionic liquid

Hsiung T-L, Wang H.P., Wei Y-L, National Cheng Kung University, TW

A nitrogen-doped mesoporous TiO2 (N-TiO2) was synthesized using a room-temperature ionic liquid (RTIL) (C4mimBF4) as the template. By 1H NMR (Figure 1), interactions between Ti and nitrogen of the RTIL are observed. The nanosize mesoporous [...]

Application of Sugimoto model on particle size prediction of colloidal TiO2 nanoparticles

Mehranpour H., Askari M., Ghamsari M.S., Farzalibeik H., Sharif University of Technology, IR

This can be provided by understanding the nucleation and growth mechanism of nanoparticles. In this paper, the nucleation and the growth of TiO2 nanoparticles were studied with Sugimoto model, in a homogeneous closed system which [...]

Microwave-assisted superparamagnetic FePt synthesis for MRI application

Tsai J.L., Tsai M.J., Tsai T.Y., Tsai J.L., Tsai M.J., Tsai T.Y., Tsai J.L., Tsai M.J., Tsai T.Y., Lai P.S., National Chung Hsing University, TW

uperparamagnetic iron oxide (SPIO) nanoparticles have demonstrated their practicability as MRI T2-shortening agents for non-invasive cell labeling, drug delivery or tumor detections in clinical practice. Recently, superparamagnetic chemically disordered face-centered cubic (fcc) FePt nanoparticles has [...]

Synthesis of Cobalt-based Nanoparticles in Silicon Dioxide for Nonvolatile Memory Applications

Yoon J-H, Kangwon National University, KR

In this study, we report the direct growth of cobalt (Co) silicide nanocrystals (NCs) by thermally annealing of a simple sandwich structure consisting of an ultrathin Co layer sandwiched between two silicon-rich oxide (SiOx) layers, [...]

Manufacture of ultrafine drug particles via the Rapid Expansion of Supercritical Solution (RESS) Process using Taguchi approach

Asghari I., Esmaeilzadeh F., Shiraz University, IR

A multitude of pharmaceutical substances are often insoluble or only slightly soluble in aqueous media and the application of oral or injectable drugs is often limited by its low bioavailability. Recently, there have been great [...]

The Use of Taguchi Method to Determine Factors Affecting the size of fine attapulgite particles generated by rapid expansion supercritical solution with and without cosolvents

Asghari I., Esmaeilzadeh F., Shiraz University, IR

The presence of fine particles tends to increase viscosity. Besides the solid load particle properties, especially the specific surface area, have a pronounced impact on the suspension’s viscosity. Attapulgite is used as a viscosifier in [...]

Formation mechanism of copper-silver metal nanoparticle encapsulated in carbon shell

Kang H.Y., Wang H.P., Huang C.H., Tsai C.K., National Cheng Kung University, TW

The formation mechanism of nanosize copper-silver encapsulated in the inert carbon shell (CuAg@C) has been studied by in-situ small angle X-ray scattering (SAXS) spectroscopy. SAXS is a very useful method in studies of electron density [...]