Complex particles produced from graphite powder by acoustic cavitation in water

Spaghetti-like structures made of fibers whose diameter are of about 1–2 μm, straight structures from about 10–20 μm and optically semitransparent particles, with linear dimension up to about 0.3 mm, were obtained from fine graphite powder in water subjected for 20 h to acoustic cavitation at a frequency of 19.5 kHz. ure of spaghetti-like structures obtained by scanning electron microscopy is reported. From X-ray diffraction pattern, it was found that the semitransparent precipitates have an amorphous nature.