Preparation and characterization of "green" hybrid clay-dye nanopigments. (March 2015)

• Record Type: Journal Article
• Authors: Kaya, Mehmet; Onganer, Yavuz; Tabak, Ahmet
• Is Part Of: Journal of physics and chemistry of solids. Volume 78(2015:Mar.)
• Page Start: 95
• Page End: 100
• Publication Date: 2015-03
• Subjects: Thermogravimetric analysis (TGA) -- Nanostructures -- Electron microscopy -- Surface properties; Solids -- Periodicals; Solides -- Périodiques; Solids; Periodicals; 530.41
• DOI: 10.1016/j.jpcs.2014.10.016
• Languages: English
• ISSNs: 0022-3697

Abstract

Abstract: We obtained a low cost and abundant nanopigment material composed of Rhodamine B (Rh-B) organic dye compound and Unye bentonite (UB) clay from Turkey. The characterization of the nanopigment was investigated using scanning electron microscopy (SEM), particle size distribution, powder X-ray diffraction (PXRD), Fourier transformed infra-red spectroscopy (FT-IR) and thermal analysis techniques. According to the result of texture analyses, we showed that the particle size distribution ( d : 0.5-mean distribution) of Rh-B/UB nanopigment material was around 100 nm diameter. It was also demonstrated that the samples had a particle size around nm diameter in SEM images. As seen in the PXRD and thermal analysis, there is a difference in basal spacing by 1.46° (2 θ ) and a higher mass loss by 7.80% in the temperature range 200–500 °C compared to the raw bentonite. Highlights: The modification is necessary for making clays suitable for specific application. This study focused on developing Rhodamine B/Unye bentonite (Rh-B/UB) nanopigment. The spectroscopic data of his nanopigment revealed that the Rh-B dye molecules migrate into the interlayer spacing of the Unyebentonite as the cationic species and monolayer form.