Labeling of metastatic tumors can aid in their staging and resection of cancer. Near infrared (NIR) dyes have been used in the clinic for tumor labeling. However, there can be a nonspecific uptake of dye by the liver, lungs, and lymph nodes, which hinders detection of metastasis. In order to overcome these problems, we have used two NIR dyes (DyLight 650 and 750) conjugated to a chimeric anti-c...

The use of reactive dyes has increased rapidly due to outstanding properties, growing consumption of cellulosic fibers, and decrease in the production of other application classes of dyes for cellulosics because of cost and health hazards. However, reactive dyes cause the greatest effluent problems for the dye industry. This study explored reusing these dyes in which the residual dyeings were d...

This paper aims to evaluate the simultaneous adsorption of basic red 2 (BR2) and violet 3 (BV3) in a binary system batch mode using date stones as low cost adsorbents. For both dyes, experimental kinetic data were well fitted by Brouers–Sotolongo model (R =0.99) intraparticle diffusion was controlling step mass transfer mechanisms. The extent found be lower for BR2 (1.13×10 -11 cm /s) than BV3 ...

objective: the aim of the present study was to evaluate the efficacy of two caries detector dyes in the diagnosis of dental caries. materials and methods: twenty extracted human posterior teeth without pulpal exposure were sectioned mesiodistally through the center of the lesions using a water-cooled disk. the tooth halves were randomly divided into two groups and treated with caries detector (...

this paper reports application of cetyltrimethylammonium bromide (ctab) coated magnetite nanoparticles (fe3o4 nps) as a novel adsorbent for removal of two types of disperse dyes, including disperse red 167, and disperse blue 183, from wastewater of textile companies. the effect of parameters including type of surfactant, ph of solution, surfactant concentration, and amount of salt, was investig...

Abstract Co and N co-modified mesoporous carbon composites (Co/N-mC) have been simply prepared at low cost from the carbonization of ZIF-67 wherein not only providing surface N-modification for promoting adsorption behavior acidic dyes, but also constructing a magnetic property convenient separation. Co/N-mC composite presented ability MO (178 mg g −1 ) > RhB (141 (T = 25 °C, pH 7.0, C 0 20 ...

This paper reports the application of an advanced multilayer model to study adsorption food dyes FD&C blue No. 2, acid red 18, and yellow 5 from aqueous solutions with a chitosan film. These dyes' mechanisms were discussed analyzed at 298–328 K pH 4–7 via statistical physics calculations. Physicochemical parameters utilized explain dye molecular scale. Modeling results showed aggregation phenom...

background: the presence of even a very small quantity of dye in water bodies is undesirable and affects the water bodies. dye removal from industrial waste water is significant; hence in this study, a material that is an economical waste product was employed to test its acid dye removing capacity from aqueous solution. methods: in this study, batch mode experiments were performed in the sorpti...

hydrothermal synthesis of nickel-chitosan hybrid  has  been accomplished using ni(ch3coo)2,4h2o, chitosan and water as starting material, template and solvent respectively, followed by calcination at 800 and 900˚c to provide nanoporous nio800  and nio900. the solid products were characterized by x-ray diffraction (xrd), nitrogen adsorption-desorption, scanning electron microscopy (sem) and four...

Two different natural dyes containing anthocyanin extracted from black carrot and bramble from Iran. Spectrophotometric evaluations of the natural dyes in solution and on a TiO2 substrate were carried out in order to assess changes in the status of the natural dyes. The results show that the natural dyes indicate buthochromic shift on the TiO2 substrates. The chemical adsorption of natural dyes...