Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1609342 | Journal of Alloys and Compounds | 2015 | 6 Pages |
Abstract
Superior photocatalytic activity could be achieved by multi-walled carbon nanotube (MWCNT) incorporated in the porous assembly of marigold-like SnIn4S8 heterostructures synthesized by a flexible in-situ solvothermal method. The as-prepared MWCNT/SnIn4S8 composites were well-characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), field emission scanning electron microscopy (FE-SEM) and UV-vis diffuse reflectance spectroscopy (DRS). The photocatalytic properties of the as-prepared samples were tested by photo-degradation of aqueous malachite green (MG) under the irradiation of visible light. It was found that the MWCNT/SnIn4S8 composites showed enhanced visible light photocatalytic activity for dye degradation, and an optimum photocatalytic activity was observed over 3.0Â wt.% MWCNT incorporated SnIn4S8 composites. The superior photocatalytic activity of MWCNT/SnIn4S8 composites could be ascribed to the existence of MWCNT which could serve as a good electron acceptor, mediator as well as the co-catalyst for dye degradation. The synergistic effect between SnIn4S8 and MWCNT in the composites facilitated the interfacial charge transfer driven by the excitation of SnIn4S8 under visible-light irradiation. Furthermore, a possible mechanism for the photocatalytic degradation of MWCNT/SnIn4S8 composites was also discussed.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Chaoying Ding, Li Tian, Bo Liu, Qian Liang, Zhongyu Li, Song Xu, Qiaoli Liu, Dayong Lu,