Nanoforests composed of ZnO/C core-shell hexagonal nanosheets: fabrication and growth in a sealed thermolysis reactor and optical properties

作者：Hossain Muhammad Mohsin; Shima Hossain; Ku Bon Cheol; Hahn Jae Ryang^*

来源：Journal of Materials Science, 2015, 50(1): 93-103.

DOI：10.1007/s10853-014-8569-5

An efficient method was developed for fabricating a highly porous nanoforest structure composed of ZnO/C core-shell hexagonal nanosheets (HNSs). Compact thermolysis of zinc acetate dihydrate in a sealed bath reactor at 400 degrees C over 20 h yielded the nanoforest structures. A carbon shell layer coating was applied in situ during the growth of the ZnO nanosheet core. The structures, morphologies, growth processes, compositions, and binding characteristics of the ZnO/C core-shell HNS nanoforests were analyzed using multi-purpose high-performance X-ray diffraction (XRD), scanning electron microscopy, energy-dispersive X-ray spectroscopy, Raman spectroscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy (XPS) techniques. XRD and XPS results suggest the existence of oxygen vacancy defects in the core surface of ZnO/C core-shell. The ZnO/C core-shell HNS nanoforests exhibited strong absorption features from the visible to the near-IR region (400-1670 nm), and the nanoforest films showed high electrical conductivity.

• 出版日期2015-1