Preparation of Cuprous Oxide to Degrade 4,4-Isopropylidenediphenol by Photo Fenton-Like Process

Cheng-Chun He, Yi-Cian Chen, Chin-Min Cheng, Chao-Yin Kuo



Degradation of aqueous 4,4-isopropylidenediphenol by a photo Fenton-like process was investigated in this study using granular cuprous oxide (Cu2O) as the photocatalyst. The granular Cu2O, coated on glass beads, was prepared by a microwave-assisted thermoethanol method. Results from XRD analysis show the thermoethanol method successfully synthesized cuprous oxide. The UV-vis results demonstrate that the band gap energy of granular Cu2O photocatalyst was narrower and imply the granular Cu2O can be easily excited comparing to standard powder cuprous oxide. After considering operation cost, the optimal 4,4-isopropylidenediphenol degradation condition in this study was achieved when the system was exposed to 365 nm irradiation with light intensity of 2.79 mW/cm2 and the presence of 30 mM hydrogen peroxide. The reaction rate constant reached 1.61x10-2 min-1 and a degradation efficiency of 82% was achieved after 90 minutes of reaction. The results demonstrate that the system can effectively degrade aqueous 4,4-isopropylidenediphenol.


Keywords: cuprous oxide; photocatalyst ; 4,4-isopropylidenediphenol; photo Fenton-like; degradation