Abstract
Nano-clay based pigments (NCP) are new type of pigments composed of organic dyes and layered silicateclay nano-particles, and have already been used in polymeric coatings to improve mechanical thermal and stability properties. In this paper, the basic blue 41(BB41) was intercalated into Na+-montmorillonite in an aqueous medium. The dye-intercalated montmorillonite was centrifuged, dried, and milled to prepare the nanopigment particles. X-ray diffraction showed an increase in the basal spacing, thus confirming intercalation of the BB41 molecules within the nanostructures of the interlayer spaces. Fourier transform infrared spectroscopy was used for identifying the functional groups and chemical bounding of Na+-montmorillonite, BB41 and montmorillonite-BB41. The morphology of NCP was also studied by transmission electron microscopy. Finally, thermogravimetric analysis and differential thermograms suggested the thermal stability of the intercalated dye was improved.
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The Editor-in-Chief retracts the above-mentioned article. Upon investigation carried out according to the Committee on Publication Ethics guidelines on plagiarism, it has been found that the authors have duplicated substantial parts from the following article: Intercalation of methylene blue into montmorillonite at different conditions: An approach for preparing clay-based nanopigments. Validi M, Bazgir S, Rashidi A, Yazdanshenas M E, Ceramics-Silikaty, 2012, 56(2): 152-158, INST CHEMICAL TECHNOLOGY, DEPT GLASS CERAMICS
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Kievani, M.B., Edraki, M. RETRACTED ARTICLE: Synthesis, characterization and assessment thermal properties of clay based nanopigments. Front. Chem. Sci. Eng. 9, 40–45 (2015). https://doi.org/10.1007/s11705-015-1505-7
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DOI: https://doi.org/10.1007/s11705-015-1505-7