纳米氧化铁的制备和表征北京师范大学化学学院 小灰（081015xxxx）指导教师 司书峰摘 要：通过控制pH值，缓慢水解FeCl3合成纳米Fe2O3，对其物相进行XRD和TEM表征，并作气敏性质的测试。XRD和TEM显示制得的粒子为椭球形-Fe2O3，粒径约为28nm，且分散性好。粒子对乙醇、丙酮和90#汽油都有响应，且随气体浓度增加，气敏阻值线性降低。关键词：纳米Fe2O3；XRD；SEM；气敏性质Preparation and characterization of Iron Oxide NanoparticlesAbstract：Iron oxide nanoparticles were prepared by a solution phase controlled hydrolysis method, and were characterized by XRD and SEM techniques. Its gas-sensitivity was also tested later. XRD and SEM results show th
