کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10669747 1008786 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Superhydrophobic hybrid films prepared from silica nanoparticles and ionic liquids via layer-by-layer self-assembly
ترجمه فارسی عنوان
فیلم های هیبریدی سوپر هیدروفوف ساخته شده از نانوذرات سیلیکا و مایعات یونی با استفاده از خودآموزی لایه
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
چکیده انگلیسی
The construction of superhydrophobic surfaces is of great interest in the fields of materials science and engineering. In this work, a class of hybrid thin films with controlled wetting property was prepared from silica nanoparticles and an ionic liquid via layer-by-layer self-assembly. Positively charged ionic liquid 1-dodecyl-3-methylimidazoliumbromide ([C12mim]Br) and negatively charged silica nanoparticles were alternatively adsorbed onto glass substrates. The silica nanoparticles were characterized by transmission electron microscopy, and the hybrid films were characterized by scanning electron microscope and X-ray photoelectron spectroscopy. The wetting property of the bulk films was examined by water contact angle measurements. The hydrophobicity of surfaces originated from the formation of nanostructure and the hydrophobic property of the ionic liquid. The change in the layer numbers, concentration of NH3·H2O and the type of silica precursor (tetramethoxysilane and tetraethoxysilane) could control the wettability. Under the optimum layer numbers and size of SiO2, a superhydrophobic (SiO2/[C12mim]Br)13 hybrid film with a contact angle of 152.3 ± 5.0° was obtained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 570, Part A, 3 November 2014, Pages 27-32
نویسندگان
, , , , ,