【摘要】 使用高分辨透射电子显微镜在室温台上通过电子束照射MoO3 ,制备钼及钼的亚氧化物纳米微粒 .实验发现微米级MoO3 颗粒在强度为 1 0 2 1e/cm2 ·s的电子束照射下转变为纳米级亚氧化钼 ,经过电子束的进一步照射后 ,亚氧化钼转变为钼 .这种现象可能是由于电子束的激发作用和通过“撞击”效应而使原子发生错排引起氧原子分离造成的 .更多还原

【Abstract】 Mo and MoO 3-x nanoparticles were fabricated in HRTEM on a room temperature table by electron beam irradiating MoO3. Micro-MoO3 may be turned into MoO 3-x when irradiating intensity is more than 10 21e/cm2·s. With irradiating time prolonged , Mo nanoparticles were formed from MoO 3-x. The phenomenon may be interpreted by electron beam activation and ″knock-down″ effect. Oxygen atoms in MoO3 microparticles were separated by means of absorbing electron beam energy. At the meantime, the microparticles were broken into nanoparticles by electron beam ″hammer″.更多还原