中文摘要：

研究以碳球为模板,在包覆硅层过程中加入制孔剂,后经煅烧去除模板和制孔剂制备得到SiO2空心球。尝试添加聚乙烯吡咯烷酮（PVP）、十六烷基三甲基溴化铵（CTAB）为制孔剂,通过改变其用量来研究孔径大小和比表面积的变化。采用SEM、TEM和比表面测试仪对其形貌和各项性能进行表征。结果表明：以PVP和CTAB为制孔剂所制得的SiO_2空心球均生成了一定大小的孔径,且拥有较大的比表面积。可以作为一种很好的纳米反应器,期望在化学合成中有广泛的应用前景。

英文摘要：

In this paper,carbon spheres were used as the template,and pore forming agent was added in silicon layer coating process.Then,SiO_2 hollow spheres were gained after template and pore forming agent were removed through calcining.Polyvinylpyrrolidone（PVP）and cetyl trimethyl ammonium bromide（CTAB）were added as the pore forming agent.The changes in pore size and specific surface area were researched through changing the dosage of PVP and CTAB.SEM,TEM and specific surface tester were used to characterize the morphology and various properties.The results show that SiO_2 hollow spheres prepared with PVP and CTAB generate pores with certain size of pore diameter and large specific surface area.Thus,it can serve as an excellent nano reactor,and hopes extensive application prospect in chemical synthesis.