摘要
利用废旧硒鼓经过废旧硒鼓破碎磁选装置处理得到的黑色有机墨粉作为原料,采用环境友好的低沸点有机溶剂处理除去表面有机物,通过500℃煅烧处理即可得到棕褐色的磁性氧化铁材料.经XRD测定发现,该方法处理得到的氧化铁为γ-Fe_2O_3;扫描电镜SEM显示,其形貌为均匀的圆颗粒状,平均粒径在200 nm左右.气敏性能测试结果表明,与商业Fe_2O_3相比,这种γ-Fe_2O_3材料对VOCs(乙醇、丙酮等)气体有较好的气敏响应和选择性,有望在挥发性有机化合物气体检测方面取得应用.
The waste drums are used after crushing processing magnetic separation device to get black organic toner as raw materials. Then we use the environmentally friendly low boiling point organic solvent treatment to remove organics on the surface of toners, and the brownish magnetic iron oxide materials is obtained by 500 ℃ calcination treatment. XRD experiments found that the products are γ-Fe2O3 crystal; scanning electron microscope （SEM） found that γ-Fe2O3particulates present uniform particle size of about 200 nm. Gas sensing test results show that compared with commercial Fe203, γ-Fe2O3 material obtained with this method have a good response and selectivity to VOCs （ethanol, acetone, etc. ）. The materials are expected to achieve detection of volatile organic compounds.
出处
《郑州大学学报（工学版）》
CAS
北大核心
2016年第4期44-48,共5页
Journal of Zhengzhou University（Engineering Science）
基金
上海市宝山科委产学研合作项目(CXY-2012-40)
