Well-ordered vertically aligned ZnO/CdS core/shell nanowires with enhanced photocatalytic performance

作者：Chen, Guifeng^*; Song, Xiaolin; Zhang, Hui; Zhang, Xuenan; Zhang, Jiao; Wang, Yan; Gao, Jianbo; Zhao, Yanmin; Zhang, Chao; Tao, Junguang

来源：Surface and Coatings Technology, 2017, 320: 467-471.

DOI：10.1016/j.surfcoat.2016.11.085

• Semiconductors
• Crystal growth
• Core-shell nanowires
• Photocatalysts

Well-ordered vertically aligned ZnO/CdS core/shell nanowires (NWs) were successfully synthesized on Si substrates through two-step ion exchange approaches. The morphology, crystal structure and composition were characterized by scanning electron microscope, X-ray diffraction, and high-resolution transmission electron microscope. The shell thickness can be easily tuned between 10 and 25 nm via changing ion exchange time and solution concentration. It is found that ZnO/CdS core/shell NWs exhibit enhanced light-harvesting ability in both UV and visible light range which leads to improved photocatalytic performance as compared to bare ZnO. In addition, the mechanism of the photo-performance is discussed to illustrate the efficiency enhancement of ZnO/CdS photocatalysts.

• 出版日期2017-6-25
• 单位中国电子科技集团公司第十八研究所; 河北工业大学; 中国原子能科学研究院