New, fast and green procedure for the synthesis of gold nanoparticles based on sonocatalysis

► New, fast and green procedure for the synthesis of gold nanoparticles based on sonocatalysis. ► The gold nanoparticles synthesized by this methods are called gold sononanoparticles. ► The synthetic process takes place in less than 6 min. ► The resources can be optimized at low cost, with low time of synthesis and no waste production. ► This gold sononanoparticles are ideal for building modified amperometric sensors and biosensors.