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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.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Flash Sintering: A Paradigm Shift for Processing of Ceramics
Historical and Basic Introduction to Antiferroelectrics
Initial Fragmentation and Granular Transition of Ceramics
Micromechanics of Machining and Wear in Hard and Brittle Materials
Models for the Behavior of Boron Carbide in Extreme Dynamic Environments
Observation of the Electromechanical Responses of (Na,K)NbO3 under Combined External Mechanical and Thermal Fields
Synthesis of β-MoO3 Whiskers by Thermal Evaporation Method and Its Application in Production of 99Mo/99mTc
Synthesis, Densification, Microstructure, and Mechanical Properties of High-entropy Carbide Ceramics
Unique Performance of Thermal Barrier Coatings Made of Yttria Stabilized Zirconia at Extreme Temperatures (> 1500°C)

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