| AVS 61st International Symposium & Exhibition | |
| Surface Science | Tuesday Sessions |
| Session SS-TuP |
| Session: | Surface Science Poster Session |
| Presenter: | Yuji Nakamura, Kogakuin University, Japan |
| Authors: | Y. Nakamura, Kogakuin University, Japan N. Yoshida, Kogakuin University, Japan T. Okura, Kogakuin University, Japan |
| Correspondent: | Click to Email |
Ti-doped hydroxyapatite (TiHAP), partially substituted Ca2+ with Ti4+, exhibits photocatalytic activities such as decomposition of organic compounds similar to that of TiO2, as our group has reported. Oxidation power of TiHAP seems to be weaker than that of TiO2, and, it shows excellent adsorption ability derived from hydroxyapatite structure. The mechanism of phtocatalytic activities of TiHAP is still unknown, however, Ti-doping and/or defects derived from Ti-doping are thought to play an important role in photocatalytic reactions. Here, we tried to fabricate thin films of Zn-doped calcium phosphate, and to evaluate those photocatalytic activities.
Transparent and homogeneous thin films of Zn-doped calcium phosphate were successfully fabricated from a solution of zinc nitrate, calcium nitrate, and phosphorus oxide by spin-coating on glass substrates and following calcination. Several characterizations, such as UV-vis transmission and reflection spectroscopy, X-ray diffraction analysis, and surface structural analysis by atomic force microscope, were carried out. Methylene blue decomposition tests under irradiation of UV light suggested that photocatalytic activity was improved by Zn-doping.