In this study, dispersive liquid-liquid micro-extraction using ionic liquid (IL-DLLME) combined with zero crossing first derivative spectrophotometric method was applied to quantitative determination of triphenylmethane dyes in binary mixtures. The 1-methyl-3-octylimidazolium hexafluorophosphate...

A systematic theoretically study is performed for violet phosphorus monolayer nanosheet with the objective of improving its photocatalytic activity in water splitting under visible light by isoelectronic elements (N, As, Sb, and Bi) doping and strain engineering. The results show that compared w...

In this study, CNCs-TiO2 heterojunctions were synthesized successfully via a two-step method. The obtained materials were systematically characterized by a series of technologies including XRD, TEM, HRTEM, FT-IR, XPS, UV-DRS, PL and EIS. Moreover, the photocatalytic activity of CNCs-TiO2 was eva...

The enhanced optical sensitivity of gallium nitride (GaN) ultraviolet (UV) photodetectors is demonstrated using attachable and hydrophobic freezing-delayed surfaces. The GaN surface attached to microfabricated surfaces with an array of pyramid structures reduced the surface reflectance compared ...

This study investigates the dispersion of 1 wt.% of C.I. Pigment Violet 23 particles in acetone using a supercritical fluid-assisted dispersion process (SFAD) with commercial dispersants. The effects of several key factors on the mean size of pigment dispersoids were investigated. These factors ...

This study investigates the dispersions of 1 wt.% C.I. pigment violet 23 particles in propylene glycol monomethyl ether acetate (PGMEA) using a supercritical fluid-assisted dispersion process (SFAD). The favorable formulation of dispersants is a blend of 40% AJISPER PB821 and 10% FC-4430 in a PG...

Dispersed carbon particles were prepared by microwave heating of aqueous solution of poly ethylene glycol and glucose precursors. Then, a facile method was presented to precipitate the stable dispersed carbon particles, using H2O and Al(NO3)3. The obtained carbon powder was characterized by scan...

The stationary and time-resolved photoluminescence (PL) spectra of ZnO films deposited on different substrates were studied. The intensive violet (V) emission centred at about 415–420 nm was observed at room temperature in photoluminescence (PL) spectra of the ZnO films. We found that the V-ban...

Black phosphorus has shown great potential in many applications such as energy, optoelectronics and bio/sensing. However, its toxicity study is still in its infancy. Here, the cytotoxicity of black phosphorus prepared by two different synthesis methods, i.e. vapour growth transport and high pres...

As water is the most important source for survival for all individuals around the world, water pollution via synthetic toxic dyes and microorganisms is considered as a serious worldwide environmental problem. The present work aimed to synthesize crosslinked grafted xanthan gum (XG) films with po...

The hybrid rGO-TiO2/Co3O4 nanocomposite was successfully synthesized through co-precipitation method. The structural, morphological, compositional and optical properties of the as synthesized nanocomposite were characterized by X-ray diffraction (XRD), Field Emission scanning electron microscopy...

This work describes a new method for the determination of organic compounds in solid samples based on the equilibrium desorption of the analytes in an aqueous phase followed by stir bar sorptive-dispersive microextraction (SBSDME). Sand samples, contaminated with UV filters due to bathing and re...

A novel spouted bed reactor is evaluated for water treatment by an adsorption and electrochemical regeneration process. The adsorbent is a bisulphate graphite intercalation compound with low specific surface area but high electrical conductivity, suitable for adsorption of contaminants and simul...

A multidimensional graphene and ZnO-based heterostructure for flexible transparent ultraviolet photodetector (UV-PD) applications is successfully fabricated on an indium tin oxide-coated polyethylene terephthalate substrate (ITO-coated PET). In this prototype, chemically reduced graphene oxide f...

Disperse azo dyes are synthesized and characterized by 1H NMR, 13C NMR, LC-MS, Elemental analysis, UV–visible, and fluorescence spectroscopy methods. The azo dyes show absorption maxima in the range of 460–493 nm. Dye with benzothiazole moiety i.e. VM7a and VM8a show a bathochromic shift in ab...

In the study, a new vacuum method was applied to prepare the hybrid pigments of sepiolite and Basic red 46 (XL-GRL). Various hybrid pigments respectively prepared by the vacuum method, solid method and liquid method were compared. The obtained products were respectively labeled as VM, SM and LM....

Graphene Oxide (GO) is a very unique material with a broad potential. However, modifying GO effectively to achieve maximum dispersion stability in a medium is very critical for various applications. In this paper, GO/poly(acrylamide-co-acrylic acid) (PAM-co-PAA) composites (GMAs) were readily pr...

Water purification and seawater desalination are current desired technologies because global water shortage becomes more serious. As this problem is related to global warming, the energy for the processes should be covered by renewable energies like solar light. It was found recently that water ...

Nitrogen adsorption isotherms have been determined on commercial samples of the disperse dye, C.I. Disperse Red 54. The samples contain considerable proportions of dispersing agent. Low BET surface areas (0.3-0.5 m2g−1) were obtained. For some samples, the nitrogen isotherms are reversible or ex...

Bioremediation is one of the milestones achieved by the biotechnological innovations. It is generating superior results in waste management such as removal of textile dyes, which are considered xenobiotic compounds and recalcitrant to biodegradation. In the present bioremedial approach, Brevibac...