Surface Treatment to Enhance Photocatalytic Activity of ZnS Complex Nanostructure via a Post-Synthesis Route
Abstract:ZnS nanosheet composed solely by wurtzite (001) face was synthesized in concentrated NaOH solution. The sample was subjected to surface treatment and characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) atomic force microscope (AFM). We further used the nanosheet for investigating the photocatalytic activity under different surface adsorption states. The photocatalytic activity after surface treatment was evaluated by the decolorization of rhodamine B (RhB) under UV irradiation. We found that the photocatalytic activity was greatly enhanced after surface modification. The microscopic change in the surface state was described in detail and the related mechanism was discussed. For the potential application in environmental protection, we have also done the cycle performance experiment. We propose that the surface modification strategy is beneficial for reasonably designing and exploring novel photocatalyst.
Document Type: Research Article
Publication date: 2009-11-01
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- Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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