SynopsisThe extent of recrystallization of nascent UHMWPE powder is easily measured by calorimetry. Melting and recrystallization of nascent UHMWPE at 140°C can be suppressed by compression molding. Crystals of UHMWPE prepared from dilute solution show a peak melting temperature of 140°C and exhibit crystallinity up to 75.5% depending on crystallization temperature. Large changes in crystallinity result from drawing single crystal mats or compression-molded films.
C60@P25 photocatalyst with core–shell structure was synthesized by adsorption methods. Under visible light irradiation, the electrons of the excited C60 (C*60) adsorbed on the surface of P25can be injected into the conduction
band of the P25. The electrons could combine with O2 easily, which promotes the formation of hydroxyl radicals which contributes to the dramatic visible light activity of C60@P25 photocatalyst in phenol degradation. The apparent rate constant of
C60@P25 photocatalyst in phenol degradation is almost 3.3 times of which of P25. At the same time, the phenol can be mineralized completely. Under UV irradiation, the photogenerated electrons on the conduction band of P25 can be injected into
the LUMO orbit of C60, which is too low that electrons could not combine with O2 easily, interdicting the formation of hydroxyl radicals, resulting in the decrease of photoactivity and weakening in the mineralization of phenol.
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.