Adsorption of Dye Molecules and Its Potential for the Development of Photoactive Hybrid Materials Based on Layered Silicates

Abstract

The present paper gives a brief account of the latest advances in understanding of the mechanism and implications of dye adsorption with a special focus on layered silicate surfaces. It has been clearly demonstrated that the controlled adsorption of novel or already well-known dyes has equally great yet unexplored potential. In principle, the well-engineered surface confinement of the molecules may lead to their aggregation, adsorption, or intercalation-induced fluorescence emission even with conventional dyes, which are not considered as luminophores in solutions or in the solid state. We envision the utilization of silicate-based heterogeneous systems to produce novel polymer blended films or structured liquids, as well as to develop a plethora of other photophysical and biomedical applications.

Controversial Issues Related to Dye Adsorption on Clay Minerals: A Critical Review

“…There are only a few studies in which an instantaneous process of dye adsorption has been analyzed in more detail [56,58]. However, more accurate studies that provide the kinetic parameters for rapid initial adsorption are still missing [71][72][73][74][75]. The whole rapid process can also be divided into two stages, faster and slower.…”

Comprehensive analysis of cationic dye removal from synthetic and industrial wastewater using a semi-natural curcumin grafted biochar/poly acrylic acid composite hydrogel

“…16 Rhodamine B (a xanthine organic dye) and malachite green (a triarylmethane dye) have enormous applications in fluorescence staining, leather and paint manufacturing, textile dyeing, 17 paper printing, glass production, fungicides, and ectoparasiticides in aquaculture, as well as in food additives and cell staining, respectively. 18 The observation of MG residues in fish tissue suggests the potential entry of this toxic chemical into the food chain and endangers human health. 19 To date, a variety of approaches namely ion exchange membrane separation, 20 Bioremediation, 21,22 photochemical degradation, electrocoagulation, 23 adsorption, and fenton-biological degradation 24,25 have been developed to treat dye-laden wastewater.…”

Exploiting the photophysical features of DMAN template in ITQ-51 zeotype in the search for FRET energy transfer

“…In this context, research on hybrid materials containing photoactive units is an expanding field, providing interesting systems in the fields of optics, electronics, energy, environment, and many others. [1][2][3][4][5] When designing active systems with fluorescent organic dyes, one of the prerequisites is that the material must be optically dense for optical applications. However, many of these photoactive molecules have a relatively high tendency to self-associate under the necessary high concentrations (in aqueous solution or solid-state), which leads to a negative impact on the overall luminescent performance.…”