Polyethylene terephthalate (PET) fiber and textile is one of the largest synthetic polymer commodity in the world. The great energy consumption and pollution caused by the high temperature and pressure dyeing of PET fibers and fabrics with disperse dyes has been caused concern these years. In th...

A series of quinoidal bithiophene (QBT) dyes, namely QBT1-QBT7, which exhibit high absorption coefficients in the red spectral region, were synthesized and used as disperse dyes to examine their ability for dyeing poly(ethylene terephthalate) fabric. The dyeing properties, such as color represen...

C.I. Pigment Red 170 (P.R. 170) is one of the widely used organic pigments, and surface modification is essential to improve its thermal stability, and solvent resistance. In this work, hydrous alumina was coated onto P.R. 170 particles by hydrolysis of Al2(SO4)3, and different coating structure...

In conjunction with studies pertaining to the design of lightfast dyes for PET, the X-ray crystal structure of C.I. Disperse Yellow 86 has been solved to R=0.067 using 1999 independent reflections of MoKα radiation, collected by the ω-scan method at a variable speed. Results showed that C.I. D...

Crystals of C.I. Disperse Brown 1, an aminoazobenzene derivative, were grown from an ethanol solution and the crystal structure was determined by single crystal X-ray diffraction analysis. The dye molecule crystallizes in the orthorhombic Fdd2 space group with the unit cell dimensions: a = 30.65...

This study is focused on understanding the relationship between the molecular structure of a series of dye–polyether derivatives and its dispersing ability for parent disperse dye. The effects of dye–polyether derivatives including anchoring groups and polyether chains on the aggregation at th...

In this work, nitrogen-doped nanoporous carbon (N-NC-800) was successfully synthesized through a facile strategy involving the direct carbonization of amino-functionalized aluminum terephthalate metal organic framework (CAU-1-NH2) under nitrogen atmosphere. N-NC-800 was characterized by X-ray po...

The mechanistic of photocatalytic decolorization and mineralization of methyl orange (MO) dye have been successfully studied using immobilized titanium dioxide/chitosan-montmorillonite (TiO2/CS-MT), a combination of TiO2 as the top layer and CS-MT as the sub-layer on a glass plate. The immobiliz...

This study focused on the green synthesis of silver nanoparticles (AgNPs) using grape seed extract and their use for the catalytic degradation of a hazardous dye. The reaction temperature for the synthesis had great impacts to the properties of AgNPs and thereby, contributed to their activity fo...

Iron-containing mesostructured silica (Fe2O3/SBA-15) was prepared and used as heterogeneous catalyst in the integrated sono–photo-Fenton process. The effect of hydrogen peroxide concentration, initial pH, Fe2O3/SBA-15 loading, ultrasonic power, and initial solution concentration on the decolori...

Clay minerals are efficient adsorbent for dyes due to their colloidal properties. Tunisian raw clay collected from mine of Tamra composed of two species of clay minerals (kaolinite and halloysite) has shown efficiency for removal of azo dye “Direct orange 34” (DO34) from aqueous solutions. For...

Crystals of the 2,6-dichlorobenzoyl ester of C.I. Disperse Yellow 23 and C.I. Disperse Orange 29 were grown from chloroform, and cell dimensions were determined by a least-squares fit. Crystals of both esters were found to exist in the monoclinic space group P21/C. The structures of these dyes p...

Crystals of C.I. Disperse Orange 29, a disazo dye, were grown from a methanol solution and the X-ray structure was solved from 2484 independent reflections to R = 0.0497. Results showed that the crystal examined exists in the triclinic space group P1. Interestingly, the structure generated posse...

Using a mixture of dyes to produce a variety of shades is necessary for the industrialization of supercritical fluid dyeing. The solubility of the mixture in supercritical fluid is indispensable for combination dyeing but has been less well-studied. In this study, the solubility of trichromatic ...

Semiconductor metal oxides (TiO2, ZnO or SnO2) deposited on a highly ordered mesoporous silica material (called SBA-15 in the literature) were compared for the first time as photocatalysts in the elimination of cationic methylene blue (MB) dye from neutral aqueous solutions by adsorption and/or ...

Owing to the scarcity in nature of cobalt ores and the disadvantages of cobalt blue prepared via traditional solid-phase method, the high cost of cobalt blue pigment severely restricted their wide application in the relevant fields. Here, sepiolite was employed to fabricate the bright blue cobal...

In this study, high luminescent zinc oxide nanoparticles were prepared by a simple sol-gel route. X-ray diffraction pattern (XRD), scanning electron microscopy (SEM), EDX, Raman, UV–vis absorption and photoluminescence spectroscopy were used to evaluate the structural and optical properties of ...

This paper focuses on the development of a drug delivery system for systemically controlled release of a poorly soluble drug, letrozole. The work meticulously describes the preparation and characterizations of 2-hydroxyethyl methacrylate (HEMA) polymerization onto hydrophilic acrylamide grafted ...

We report here the fabrication of MnOx nanoparticles and porous carbon composite via a solution synthesis route followed by carbonization. Poly (acrylic acid) stabilized ultra-small MnO2 nanoparticles (around 1.0 nm) are first produced and then in situ incorporated into the RF resin matrix. The ...

According to an analysis of the input and output of polychlorinated dibenzo-p-dioxin and dibenzofurans (PCDD/Fs) of two disperse dye manufacturers, the average PCDD/F emission factor was 56.3 μg I-TEQ/T product, and dioxin was mainly emitted with products and solid waste. The PCDD/F concentrati...