“…Various nanoparticles such as nanocarbons [16] , [17] , [18] , metal nanoparticles [19] , [20] , [21] , metal oxide nanoparticles [22] , [23] , [24] , and nanocomposite particles [25] , [26] , [27] have been synthesized using these effects. Ultrasound has been used not only for material synthesis but also for the decomposition of organic materials using hotspots and radical species at high temperatures and pressures [28] , [29] , [30] , [31] , [32] .…”