摘要
以硝酸铈为前驱物,以尿素为助剂,采用一种简单的模板法合成了介孔氮掺杂CeO_2材料.利用X射线衍射仪(XRD)、吸附-脱附仪(BET)、透射电子显微镜(TEM)和傅里叶变换红外光谱(FT-IR)等设备对合成材料进行表征.多种测试结果证明:试验得到的纳米材料具有均一的介孔结构和较高的比表面积(124.8 m^2·g^(-1))并掺杂了氮元素.同时,测定了介孔CeO_2材料对于CO_2的吸附性能,并研究了氮掺杂对CeO_2材料的CO_2吸附性能的影响.结果表明:相比未掺杂氮的介孔CeO_2,氮掺杂的介孔CeO_2具有更好的CO_2吸附性能和循环吸附脱附性能.
Novel mesoporous N-doped CeO2 method using cerium nitrate as precursor has been prepared via a simple urea-assisted template and urea as additives. X-ray diffraction, adsorption- desorption and FT-IR spectrum techniques are employed to characterize the samples. It is observed that the synthesized material has a uniform mesostructure with a high specific surface area（124.8 m^2·g^-1 ）,and nitrogen element is introduced into it. The effects of mesoporous CeO2 without and with nitrogen element on the absoportion of CO2 are measured. The result shows that the synthesized mesoporous N-doped CeO2 applied as an adsorbent exhibits significant enhancement of COz adsorption performance compared with undoped mesoporous CeO2.
出处
《有色金属材料与工程》
CAS
2016年第2期8-13,共6页
Nonferrous Metal Materials and Engineering
基金
国家自然科学基金青年基金项目(51502172)
