One-step synthesis and excellent microwave absorption of hierarchical tree-like ZnO nanostructures
- Resource Type
- Authors
- Fengyi Wang; Shuankui Li; De Yan; Yi Nong Wang; Ying Liu; Renfu Zhuo
- Source
- Materials Letters. 117:34-36
- Subject
- Nanostructure
Materials science
Silicon
business.industry
Mechanical Engineering
Reflection loss
chemistry.chemical_element
Nanotechnology
Substrate (electronics)
Chemical vapor deposition
Condensed Matter Physics
chemistry
Mechanics of Materials
Optoelectronics
General Materials Science
Nanorod
business
Absorption (electromagnetic radiation)
Microwave
- Language
- ISSN
- 0167-577X
A large area of uniform and intriguing ZnO hierarchical tree-like nanostructures have been synthesized by a simple one-step chemical vapor deposition(CVD) process using pure zinc powder and O-2 gas as source materials. ZnO nanowires grow on the silicon substrate while the reactions take place, and then regular nanorods grow uniformly on the ZnO nanowires to form tree-like nanostructures by increasing the flow rate of O-2 only. Microwave absorption properties of the ZnO nanostructures have been investigated, the value of minimum reflection loss for the composite with 40 vol% ZnO hierarchical tree-like nanostructures is -27.5 dB at 5 GHz with a thickness of 4.0 mm. (C) 2013 Elsevier B.V. All rights reserved.