Preparation and Characterization of Hollow Silica Nanospheres

Abstract

Monodisperse hollow silica nanospheres were prepared using functionalized polystyrene (PS) as a template and characterized by transmission electron microscopy (TEM), nitrogen adsorption and thermo gravimetry (TG) techniques. The effect of ammonia amount on hollow silica spheres was explored. It is found that the ammonia amount is important to the fabrication of hollow silica nanospheres. The roughness and thickness of the silica shell increased with the increase of ammonia amount. When ammonia amount reached 20 ml, the product hadn’t been hollow structural. The TGA curves and the BET results of the samples supplied a proof for the formation mechanism of the hollow silica spheres.

Preparation and Thermal Propertites of Polyethylene Glycol/ Silica Hollow Nanospheres Composite as Shape-Stabilized Phase Change Materials

“…Finally, the as-synthesized PS/SiO 2 nanospheres with core-shell structure were calcined for 1 h at 550 o C. After the removal of the PS template, silica hollow nanospheres were obtained. More detailed process can be seen in our previous report [7].…”

Structural and surface characterization of nanostructured spray dried titanosilicate microspheres

“…On the other hand, their high chemical stability and non-toxicity [5,9] extended the research interest to the field of biomaterials [3,10e12], even though there are far fewer studies on TiO 2 and SiO 2 based systems compared with those reporting on calcium phosphate systems. More attention was paid to titanium and its alloys, that subjected to adequate thermal treatments showed the ability to bind to living bone [13].…”

Dielectrophoresis Response and Manipulation of Silica and its Application to Micro/Nanosensors

“…The Eighth China National Conference on Functional Materials and Applications nanospheres can be seen in the previous report [25].…”