Facial synthesis of cuprous oxide (Cu 2 O) nanowires by directly heating copper substrates is difficult; however, in this study, it was successfully done by thermal oxidation followed by a plasma reduction process. The preparation of CuO nanowires with an average diameter of 76.2 nm supported on the surface of copper substrate was conducted first in air at 500°C for 3 hrs, and then the CuO nanowires were reduced into Cu 2 O in 15 min using either radio frequency (RF) N 2 plasma or microwave (MW) N 2 plasma. The characteristics of CuO and Cu 2 O nanowires were analyzed using XRD, FE-SEM, and TEM. The results showed that Cu 2 O nanowires can be successfully reduced from CuO nanowires by a simple, promising, and fast nitrogen plasma process. Moreover, in RF plasma, narrower and longer Cu 2 O nanowires can be produced as compared to MW plasma, because energetic N-containing species can reduce the nanowires at a relatively lower temperature.
A modified rotating packed contactor was designed and evaluated for the mass transfer of ozone and the ozonation efficiency of 2-chlorophenol under various operational conditions. The rotating packed contactor was composed of an immobilized disc and a rotating packed disc. Both the overall ozone transfer coefficient and decomposition rate of 2-chlorophenol by ozonation process in the modified rotating packed bed were enhanced with increasing rotor speed or decreasing gas/liquid flow rate ratio. The decomposition rate of 2-chlorophenol was accelerated by increasing H
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.