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Multifunctional nanoparticle synthesis can be used to improve the environment

the Singapore Institute of bioengineering and Nanotechnology (Ibn) has developed a new method to extract metal ions from aqueous solutions using organic solvents. This method can be used not only to synthesize various multifunctional nanoparticles, but also to improve the environment and clean the water polluted by heavy metals. The research results were published in the recently published journal Nature Materials Science

it is reported that Ibn's research team successfully transferred metal ions from aqueous solution to organic medium by mixing metal salt solution with dodecylamine (DDA) ethanol solution. Metal ions bind to DDA and are extracted with organic solvents. This organic solvent has a low boiling point and is easy to evaporate, so it can be removed by distillation. These metal ions converted from aqueous phase to organic phase can be successfully used to synthesize various metal nanoparticles, alloy nanoparticles and semiconductor nanoparticles

metal compounds soluble in water are widely used. Through this method, many useful metals and rare materials soluble in water can be easily used to synthesize nanoparticles. Compared with other methods, Ibn method uses cheap ordinary metals soluble in water as precursors, which is low-cost and efficient. It can synthesize various types of nanoparticles with wide applications, including metal semiconductor nanocomposites and mixed nanoparticles. The method is simple and easy, can be carried out at room temperature, and will not produce toxic chemicals, which is very environmentally friendly

Dr. Ying Yiru, the main researcher of this study, said that experiments have proved the effectiveness of using this method to transform gold ions from aqueous phase to organic phase in order to serve the transformation and upgrading of enterprises. Using this technology to extract various metal ions from water will greatly reduce the production cost, make it easier to manufacture various metal nanoparticles, alloy nanoparticles, semiconductor nanoparticles and hybrid nanoparticles, and help to design and manufacture new materials with novel structures and multiple uses. This method can not only be used to synthesize various nanocrystals, but also has important application value in environmental protection. For example, the fermentation time from water and soil is shortened by 1.5 to extract heavy metal pollutants

heavy metal pollution of water sources has been a difficult problem faced by countries all over the world for a long time, which not only affects economic development, but also is harmful to human health. It is very difficult and expensive to purify water polluted by heavy metals. It is very effective to extract metals dissolved in water by using organic solvents that can remove metal residues, such as toluene. Organic solvents are less dense than ethanol or water and will float on the aqueous solution. When the mixture is stirred, the metal will completely separate from water and ethanol and dissolve in toluene. In this way, metals can be extracted from water without leaching out mineral ions. In addition to highly toxic metals such as lead and mercury, some other precious metals, including gold and circular axis, are below. Silver, iridium and osmium can also be dissolved in water and can also be extracted in this way

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