摘要
在低温条件下利用水热法在未加修饰的原始碳纳米管(CNTs)上包覆硫化锌(ZnS)。利用X射线衍射(XRD)、场发射扫描电子显微镜(FE-SEM)和透射电子显微镜(TEM)测试表明ZnS层连续均匀的覆盖在CNTs上,厚度约为24 nm,具有闪锌矿结构,红外光谱结果说明乙酰胺吸附在CNTs/ZnS表面,抑制了ZnS层的厚度,紫外-可见吸收光谱结果表明在220 nm,265 nm处存在紫外吸收峰。以亚甲基蓝为目标降解物,光催化实验结果表明,与ZnS、CNTs相比,CNTs/ZnS复合材料显现出更好的光催化活性。
Zinc sulfide (ZnS) is successfully coating on pristine and unmodified multi-walled carbon nanotubes (MWCNTs) at 60℃ by hydrothermal method. The carbon nanotubes/zinc sulfide (CNTs/ZnS) hybrid materials were characterized by X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM) and transmission electron microscopy (TEM). The results show that continuous and uniform coverage of ZnS layer is coated on the carbon nanotubes with sphalerite structure, and the thickness is up to 24 nm. The FT-IR spectra indicate that the presence of ethanamide in the CNTs/ZnS surface restrain the thickness ofZnS. The UV-visible spectra show the peak existed at 220 nm and 265 nm. Further photocatalytic experiments by using methylene blue as evaluation standards indicate that CNTs/ZnS hybrid materials exhibite higher photocatalytic activity than ZnS bulk material and CNTs as photocatalyst.
出处
《燕山大学学报》
CAS
2012年第6期502-506,共5页
Journal of Yanshan University
基金
河北省自然科学基金资助项目(E2010001174)
关键词
碳纳米管
硫化锌
复合材料
光催化
carbon nanotubes
zinc sulfide
hybrid materials
photocatalysis
作者简介
谌岩(1973-),女,河北迁安人,博士,副教授,主要研究方向为纳米材料无机合成,Email:chenyan@ysu.edu.cn。