Synthesis and Characteristics of CuO Immobilized in Porous Alumina for the Removal of Hydrogen Generated by the Fission ⁹⁹Mo Production

Abstract

Fission 99 Mo, which is one of the fission products from the irradiated 235 U target, has been mainly produced through the dissolving procedure in an alkali solution. However, this approach has problems with the explosion of the generated hydrogen gas. In this research, we designed the porous alumina ball immobilized in CuO (CuO-PAB) for the hydrogen removal. The CuO-PAB was prepared by calcining the commercial PAB absorbed Cu ion. The nano-sized CuO particles are distributed evenly in the porous network of PAB without any significant aggregation. Also, the wall of the PAB's pore channel hinders the aggregation and growth of CuO particles during the hydrogen removal process. These structural benefits show that the CuO-PAB is superior to bulk-CuO at the capacity and reaction rate of hydrogen conversion. Furthermore, these performances were durable in the recycling experiments.

High‐Performance Asymmetric Supercapacitors Based on Monodisperse CuO@C Polyhedron Nanocomposites

“…Then nanoparticle embedded polyhedron morphology of CuO@C_0, 1, and 2 is prepared via thermolysis and subsequent oxidation processes using polymer@MOF samples that morphology‐preserved transformation is clearly determined by SEM images (Supporting Information Figure S3). According to XRD analysis, only characteristic CuO peaks are observed 22 and the size of nanocrystals measured by the Scherrer equation are ca. 13, 8.2, and 6.2 nm for CuO@C_0, 1, and 2, respectively (Supporting Information Figure S4).…”