Gold nanopart icle prod uction optimization by a met al-toleran t bacterium as an effe ctive clean technol ogical approach

The d evelopment of techniqu es for the synthesis of na noparticles with well-defined size, shape and c omposition is a challenge and an i mportant ar ea of research in nanotechnology. Many microorganisms have the ability to produ ce inorganic nanostructures and metal nanopar ticles with p roperties similar to chemically-synthesised materials, while exercising control over the size, shape and c omposition of the partic les. This alternative approach to c hemical synthesis proce dures uses microbial sy stems for the production of nanos ized materials. Extracellular synthe sis of gold nanoparticl es in the pre sence of bacterial cell extract has been successfully demo nstrated. The possibility to manipulate the size and sha pe of gold nanoparticles by altering key growth parameters and incu bation cond itions is an interesting field and is under investigation by m any researc hers. The r esults could provide so me understa nding as to which parameters may h ave signifi cant effect on the formation of the ses green a nd cost-eff ective gold nanoparticles .

کلیدواژه ها:

Gold nanoparticle ، Biosynthes is ، Optimiz ation