摘要
半导体材料ZnS在光催化领域具有重要的应用前景,如何提高其光催化能力仍是目前关键问题之一。应用碳纳米管的独特结构和性能有望调变和改善ZnS的催化功能。采用一种简便的方法在水溶液中成功组装了硫化锌/碳纳米管纳米晶颗粒(ZnS/CNTs)复合膜。TEM显示纳米复合膜以CNTs组装成席状骨架,ZnS纳米晶填充在CNTs间的缝隙或者包裹在CNTs的表面,二者之间存在良好的接触和相互作用。生成的ZnS纳米颗粒尺寸均匀、大小约为5nm。用EDS、SAED和XRD分析了复合膜的元素组成以及ZnS的晶相结构。结果显示ZnS纳米晶为闪锌矿结构。
ZnS nanocrystal/CNT composite films were synthesized by the reaction of Na2S with Zn （NO3 ）2 in an aqueous solution containing CNTs purified by 65 % HNO3. The composite films were characterized by transmission electron microscopy, X-ray diffraction, selected area electron diffraction and energy dispersive X-ray spectroscopy. Results show that the CNTs act as the framework of the composite films and the ZnS nanoparticles are either anchored on the surface of the CNTs or filled apertures in the CNT network. The ZnS nanoparticles have a well-crystallized wurtzite structure and a uniform diameter of around 5 nm. The ZnS/CNT composite is expected to improve the photocatalytic ability of ZnS due to the unique conductive and wave absorptive properties of the CNTs.
出处
《新型炭材料》
SCIE
EI
CAS
CSCD
北大核心
2006年第4期360-364,共5页
New Carbon Materials
基金
中国科学院"百人计划"支持。~~
关键词
硫化锌
碳纳米管
复合
纳米结构
制备
Zinc sulfide
Carbon nanotubes
Composite
Nanostructure
Synthesis
