کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1644613 1517269 2014 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A facile green chemistry route to porous silica foams
ترجمه فارسی عنوان
یک مسیر شیمی سبز به فوم سیلیکا متخلخل
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
چکیده انگلیسی


• Porous inorganic silica foams with tunable structures and properties.
• Low-temperature hydrothermal ion-exchange reaction.
• Green chemistry route to porous foams.

Porous inorganic silica foams are synthesized from waste ordinary glasses using a facile green chemistry route that involves a low-temperature hydrothermal ion-exchange reaction. The first step entails hydrothermal incorporation of water molecules and hydrogen ions within glass powders. Subsequent calcination of the product results in inorganic foams of uniform pore structure, with water vapor being the only by-product. The structure and properties of the inorganic foams, such as pore structure, pore size, density, porosity, strength, and thermal conductivity can be tuned by varying synthetic conditions such as reaction time and temperature. The synthesized inorganic foams are thermally stable up to 800 °C with widely tunable porous structures on different length scales. The inorganic foams exhibit useful properties in terms of mechanical strength, thermal insulation and sound absorption, and appear promising for use as catalyst supports, impact absorbers, biomedical implants, and structural materials.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 119, 15 March 2014, Pages 60–63
نویسندگان
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