摘要
以石墨粉提供碳源,正硅酸乙酯提供硅源,在催化剂硝酸镍的作用下,通过溶胶-凝胶法和碳热还原法制备纯的碳化硅纳米线。采用X射线衍射仪(XRD)和场发射扫描电子显微镜(FESEM)对其所制备的样品物相结构和表面形貌进行表征,探讨了碳化硅纳米线对甲基橙的光催化分解性能。结果表明,碳化硅纳米线的加入量和不同的光照时间均会影响甲基橙溶液的降解率。当碳化硅纳米线的加入量为150mg时甲基橙的降解率最大;光照3h甲基橙的降解率最大。
The pure silicon carbide nanowires are prepared by sol-gel and carbon thermal reduction method with the graphite powder as carbon source, the ethyl orthosilicate as silicon source and the nickel nitrate as catalyst. The phase structure and surface morphology of the prepared samples are characterized by XRD and FESEM. The photocatalytic properties of SiC nanowires for decomposing methyl orange solution are studied. The results show that the addition amount of SiC nanowires and different illumination time will affect the degradation rate of methyl orange solution. The degrada-tion rate of methyl orange is the highest when 150 mg silicon carbide nanowires are added;and the degradation rate of methyl orange is maximum when the illumination time is 3 h.
作者
成旭敏
王冬华
CHENG Xu-min;WANG Dong-hua(College of Chemistry and Materials,Weinan Normal University,Weinan 714099,China)
出处
《化学与粘合》
CAS
2020年第3期176-180,共5页
Chemistry and Adhesion
基金
陕西省大学生创新创业训练计划项目(编号:S201910723052)。
关键词
碳化硅纳米线
光催化分解
甲基橙
SiC nanowires
photocatalytic decomposition
methyl orange
