Abstract
Single‐walled carbon nanotube (SWCNT) and Cd0.8Zn0.2S nanocomposites were fabricated by a coprecipitation process with prefunctionalized SWCNTs as the starting material. The resultant SWCNT/Cd0.8Zn0.2S composites were characterized by X‐ray diffraction (XRD), field‐emission scanning electron microscopy (FESEM), high‐resolution transmission electron microscopy (HRTEM), Fourier transform IR (FTIR) spectroscopy, Raman spectroscopy, UV/Vis diffuse reflectance absorption spectroscopy (DRS) and photoluminescence (PL) spectroscopy. The addition of SWCNTs improve both the visible‐light‐induced activity and stability for H2 production of Cd0.8Zn0.2S, and 10 wt.‐% SWCNT/Cd0.8Zn0.2S exhibits a maximum activity (632 mmol h–1) for H2 production that is ca. 1.40 times higher than that (451 mmol h–1) of Cd0.8Zn0.2S alone. This enhanced photoactivity of Cd0.8Zn0.2S through the incorporation of SWCNTs can be attributed to the synergetic effects of the intrinsic properties of its components; the functionalized SWCNTs act as the supporting matrix and electron acceptor of Cd0.8Zn0.2S and cause an effective charge separation at the SWCNT/Cd0.8Zn0.2S interfaces and an improvement in the photoactivity and stability for H2 production.
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