Cyrus Zamani
School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran, Iran.
[ 1 ] - Mechanochemical Synthesis of Nanostructured MgXNi1-XO Compound by Mg-NiO Mixture
Synthesis of magnesium nickel oxide phase such as MgxNi1-xO solid solutions has been studied in this research article using mechnochmical reaction between magnesium and nickel oxide. Mixtures of magnesium powder and nickel oxide (Mg+NiO) with stoichiometric compositions were milled for different times in a planetary ball mill. Reduction reaction of nickel oxide by magnesium via a mechanically i...
[ 2 ] - Synthesis of Si/MgO/Mg2SiO4 Composite from Rice Husk-Originated Nano-Silica
Silica exists in Rice husk, an agriculture waste, as a naturally occurring phase. In first step, acidic pre-treatment and calcination of the rice husk were performed to obtain nano-silica, in which various sizes of the nano-silica, totally with sizes under 80 nm, were achieved. Second, to reduce nano-silica to elemental Si and subsequently formation of the composite, Mg used as the reducing age...
[ 3 ] - Synthesis of Three - Dimensional Mesoporous Silicon from Rice Husk via SHS Route
Silicon nanoparticles are the focus of attention thanks to their potentialities in advanced applications such as new batteries, photovoltaic cells and so on. The need to porous silicon is thus rising and will follow the same trend. In this work, highly porous nanostructured silicon is synthesized via Self-propagating high-temperature synthesis (SHS) route. Microstructural and phase analyses sho...
[ 4 ] - سنتز و مشخصه یابی کربن فعال شده از سبوس برنج
مقاله حاضر سبوس برنج را به عنوان پیش‌ماده ای ارزان قیمت برای سنتز کربن فعال‌شده مورد بررسی قرار می دهد. سبوس برنج به عنوان ضایعات کشت برنج به شمار می رود. این ماده که نظر ظاهری ساختاری توخالی و شبه لوله ای دارد، علاوه بر اکسیدهای قلیایی، حاوی 16% سیلیسیوم و نیز ترکیبات کربنی است. وجود سیلیسیوم و کربن (در کنار سایر عناصر ارزشمند) سبب شده است که از بیش از 3 دهه پیش، این ماده به عنوان یکی از منابع...
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