About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
|
Journal of the American Ceramic Society Awards Symposium
|
Presentation Title |
Synthesis of β-MoO3 Whiskers by Thermal Evaporation Method and Its Application in Production of 99Mo/99mTc |
Author(s) |
Chu Minh Ngo, Tatsuya Suzuki, Dung Thi Mai Do, Tadachika Nakayama, Koichi Niihara, Hieu Duy Nguyen, Hisayuki Suematsu |
On-Site Speaker (Planned) |
Chu Minh Ngo |
Abstract Scope |
In developing the 99Mo/99mTc extraction process using water utilizing the hot atom effect in the neutron capture method, the β-MoO3 1D structure (whiskers) with a good filtering property was considered as a more suitable target than used α-MoO3 powder. Therefore, β-MoO3 whiskers were attempted to synthesize using the thermal evaporation method. By heating α-MoO3 powder from 750 to 1000 ℃ and cooling its vapor, the β-MoO3 whiskers with an average width of 10 nm and length above 1 mm were synthesized and confirmed by XRD and lattice image analyses. These β-MoO3 whiskers were irradiated in an experimental nuclear reactor to produce 99Mo/99mTc. After irradiating, from the γ-ray spectrum measurement, 66.8% of 99Mo formed in the β-MoO3 whiskers was extracted in water. From this result, the β-MoO3 whiskers were considered to be a promising irradiation target in production of 99Mo/99mTc, from which water can be used to extract the radioisotopes. |