|
|||||
|
|
Nanostructured leaf like hydroxyapatite/TiO2 composite coatings by simple sol-gel method |
|
| Authors: | A. Joseph Nathanael N. Ponpandian Pao-Chi Chen |
| Affiliation: | a Thin Films and Nanomaterials Laboratory, Department of Physics, Bharathiar University, Coimbatore — 641 046, India b Department of Nanoscience and Technology, Bharathiar University, Coimbatore — 641 046, India c Department of Chemical and Materials Engineering, Lunghwa University of Science and Technology, Taoyuan, Taiwan |
| Abstract: | We demonstrate an approach for the coating of nanostructured leaf like hydroxyapatite (HAp)/TiO2 composite on glass substrate by sol-gel dip coating process. HAp/TiO2 nanocomposite thin film was obtained by controlling the dipping rate and the dipping cycle. It was observed from Scanning Electron Microscope that leaf like nanostructured film was deposited on the glass substrate. However, the structure of the film was changed with the dipping cycle and dipping rate. Transmission Electron Microscopic analysis further confirms the morphology of the nanostructured coatings. The presence of Ti, O, Ca and P was detected by Energy Dispersive X-ray Analysis. We further confirmed the composite by X-ray diffraction analysis. Atomic Force Microscope analysis indicates that the films are composed of nanoparticles ranging from 100 to 200 nm and the films were observed to present well-defined grain boundaries. It has been shown that nanocomposite coatings are dependent on the sol concentration, dipping parameters, and the composition of HAp and TiO2. |
| Keywords: | Sol-gel TiO2 Nanostructured thin films Composite SEM AFM |
| 本文献已被 ScienceDirect 等数据库收录！ | |