Synthesis of silica nanoparticles from rice husk ash
نویسندگان
چکیده
منابع مشابه
Rice Husk Ash-Derived Silica Nanofluids: Synthesis and Stability Study
Nanofluids, colloidal suspensions consisting of base fluids and nanoparticles, are a new generation of engineering working fluids. Nanofluids have shown great potential in heat/mass transfer applications. However, their practical applications are limited by the high production cost and low stability. In this study, a low-cost agricultural waste, rice husk ash (RHA), was used as a silicon source...
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Spherical and needle-like cobalt nanoparticles incorporated on rice husk silica was synthesized by a simple, rapid and eco-friendly sol-gel route at room temperature. This was achieved by direct mixing of 20 wt.% Co with sodium silicate from rice husk under ambient conditions to form RH-20Co. The cobalt was found to be isomorphously substituted in the silica matrix. A good dispersion of cobalt ...
متن کاملSynthesis of silica nanoparticles from Vietnamese rice husk by sol–gel method
Silica powder at nanoscale was obtained by heat treatment of Vietnamese rice husk following the sol-gel method. The rice husk ash (RHA) is synthesized using rice husk which was thermally treated at optimal condition at 600°C for 4 h. The silica from RHA was extracted using sodium hydroxide solution to produce a sodium silicate solution and then precipitated by adding H2SO4 at pH = 4 in the mixt...
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For a developing country like Bangladesh, waste management is an important issue. Since it is a small over-populated country , strict government regulations regarding landfills is essential. Expansion of ceramic industries is considered to be one of the potential sectors for the economic growth of Bangladesh. However, raw material cost per unit production is the prime concern for industrialists...
متن کاملSynthesis 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...
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ژورنال
عنوان ژورنال: Science and Technology Development Journal
سال: 2018
ISSN: 1859-0128,1859-0128
DOI: 10.32508/stdj.v20ik7.1211