title: Metal-Organic Framework Based on Isonicotinate N-Oxide for Fast and Highly Efficient Aqueous Phase Cr(VI) Adsorption.
abstract: Synthesis of new porous materials has been developed for efficient capture of pollutants in environmental sciences. Here, the application of a new metal-organic framework (TMU-30) has been reported based on isonicotinate N-oxide as an adsorptive site for fast and highly efficient aqueous phase adsorption of Cr(VI). The adsorption process showed no remarkable effect over a pH range of 2-9. The maximum capacity of the adsorption was reached in just less than 10 min and followed the pseudo-second-order kinetics. The maximum capacity of 2.86 mol mol(-1) (145 mg/g) was obtained according to Langmuir model at 298 K. The spontaneous adsorption and an endothermic process were controlled by positive entropy changes. XPS analysis revealed electrostatic interactions between N-oxide groups of TMU-30 and Cr(VI) species, which were responsible for the adsorption process.
authors.affiliation: Department of Chemistry, Faculty of Basic Sciences, Tarbiat Modares University , P.O. Box 14115-175, Tehran, Iran.
authors.forename: Leila
authors.initials: L
authors.lastname: Aboutorabi
authors.affiliation: Department of Chemistry, Faculty of Basic Sciences, Tarbiat Modares University , P.O. Box 14115-175, Tehran, Iran.
authors.forename: Ali
authors.initials: A
authors.lastname: Morsali
authors.affiliation: Department of Chemistry, Faculty of Basic Sciences, Tarbiat Modares University , P.O. Box 14115-175, Tehran, Iran.
authors.forename: Elham
authors.initials: E
authors.lastname: Tahmasebi
authors.affiliation: Department of Physics, Faculty of Arts and Sciences, Ondokuz Mayis University , 55139 Kurupelit, Samsun, Turkey.
authors.forename: Orhan
authors.initials: O
authors.lastname: Büyükgüngor