This work describes synthesis of a novel magnetic metal–organic framework to preconcentrate the trace amounts heavy metals. (a) Functionalized Fe₃O₄ by ethylenediamine. (b) Synthesis MOF nanocomposite.

Novel temperature and pH dual-sensitive amphiphilic micelles were fabricated exploiting the host-guest interaction between benzimidazole-terminated PHEMA-g-(PCL-BM) β-CD-star-PMAA-b-PNIPAM. The graft copolymer had a brush-like structure with star side chains. utilized as dual-responsive nanocarriers showed LCST 40 41 °C. acidic promoted dissociation of PHEMA-g-(PCL-BM: β-CD-star-PMAA-b-PNIPAM) micelles. DOX.HCl was loaded into core during self-assembly in an aqueous solution high...

Abstract This study presents the preparation of SiO 2 /g-C 3 N 5 @NiFe O 4 nanophotocatalyst for removal betamethasone from aqueous solutions. The was synthesized using solvothermal method, and its structure optical properties were characterized confirmed through XRD, FESEM, EDX, DRS, BET, VSM PL analysis. Photocatalytic optimized a central composite design. band gap pure g-C , NiFe obtained 2.4 eV, 2.7 1.4 respectively Tauc plot. F -value 909.88 Lack Fit 0.41 confirm model is significant....

In this work, the interactions between Na neutral atom and Na+ ion three nanostructures such as sumanene (SM), corannulene (CN) nanosheet were investigated. The main goal of work is to calculate cell voltage (V) for Na−ion batteries, NIBs. total energies, geometry optimizations density states (DOS) diagrams studied by using M06−2X level 6−31+G(d,p) basis set. DFT calculations indicated that energy adsorption nanostructures, Ead, increased in order: SM-i > Sheet CN-i CN SM. Nevertheless,...

Abstract Aniline was polymerized in the presence of dodecylbenzene sulfonic acid (DBSA) as a functionalized protonic acid, an aqueous medium to directly synthesize polyaniline (PANI)‐DBSA particles. DBSA acted dopant and surfactant with stabilizing PANI‐DBSA dispersions by formation strong hydrogen bonds. The NH + …SO interactions between PANI chains appeared at 1026 cm −1 Fourier transform infrared (FTIR) spectrum. Elemental analysis used determine degree sulfonation (S/N ratio) resulted...

Transition metal-catalyzed [2 + 2 2] cycloadditions of nitrogen-linked 1,6-diynes with unsaturated motifs have recently attracted more attention from synthetic organic chemists because their high efficiency in the construction numerous pyrrolidine based systems.

The development of simple and efficient methods for construction substituted γ-lactams is an important synthetic goal because such ring skeletons are present in numerous natural compounds that display diverse biological activities.

Transition-metal-catalyzed C–S cross-coupling reactions comprise one of the most efficient methods for synthesis biologically and synthetically important aryl sulfide derivatives. Among various solvents used in this reaction (ionic liquids, water, organic, aqueous biphasic solvents), neat water have attracted notable interest recent years due to its properties such as non-toxicity, non-flammability, renewability, widely availability compared with other solvents. Since several catalytic...

This work describes a novel functionalized magnetic metal-organic framework nanocomposite [(Fe3O4-2,5-dimercapto-1,3,4-thiadiazole)/metal-organic framework] and its application in the preconcentration of Hg(II) ions. The parameters affecting procedure were optimized by Box-Behnken design through response surface methodology. Three variables (uptake time, nanosorbent amount, pH value) selected as main factors sorption step, while four (type, volume, concentration eluent; elution time)...

A novel biopolymer-based superabsorbent hydrogel composite based on kappa-carrageenan (κC) have been prepared via graft copolymerization of acrylic acid (AA) in the presence bentonite powder using methylenebisacrylamide (MBA) as a crosslinking agent and ammonium persulfate (APS) an initiator. The structure was confirmed FTIR spectroscopy morphology samples examined by scanning electron microscopy (SEM). affecting variables onto polymerization (i.e. AA, MBA APS concentration, well amount)...