Novel PbSe/Graphene Nanocomposites Synthesized With Ultrasonic Assisted Method and their Enhanced Photocatalytic Activity

Abstract

The authors report novel material PbSe/graphene nanocomposite synthesis via facile ultrasonic assisted method. The structural and physicochemical properties of PbSe/graphene composite are further characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) with an energy-dispersive X-ray (EDX) analysis, transmission electron microscopy (TEM), and Raman spectroscopy analysis. The photocatalytic activities were investigated by the degradation of methylene blue and rhodamine B as a standard dye. This study suggests that the as-prepared PbSe/graphene nanocomposite can be utilized as an efficient photocatalyst material.

Real-time spectroscopic monitoring of photocatalytic activity promoted by graphene in a microfluidic reactor

“…Although some microfluidic-chip-based systems have been reported for the rapid screening of photocatalysts 26 , which employed a CCD (Charge-coupled Device) camera to obtain the real-time gray value of the solution under light irradiation, they could barely determine the precise concentration of the reactants. In contrast, the proposed microreactor uses a spectrometer to obtain absorption spectra, and the performance of photocatalysis, i.e., the relationship between optical spectra and the change in the solution concentration, can be determined by the Beer–Lambert law 27 28 29 .…”