Metal-Organic Framework Based on Isonicotinate N-Oxide for Fast and Highly Efficient Aqueous Phase Cr(VI) Adsorption

被引：109

作者：

Aboutorabi, Leila ^{[1
]}

Morsali, Ali ^{[1
]}

Tahmasebi, Elham ^{[1
]}

Buyukgungor, Orhan ^{[2
]}

机构：

[1] Tarbiat Modares Univ, Fac Basic Sci, Dept Chem, POB 14115-175, Tehran, Iran

[2] Ondokuz Mayis Univ, Fac Arts & Sci, Dept Phys, TR-55139 Kurupelit, Samsun, Turkey

来源：

INORGANIC CHEMISTRY | 2016年 / 55卷 / 11期

关键词：

COORDINATION POLYMERS; HEXAVALENT CHROMIUM; SINGLE-CRYSTAL; REMOVAL; WATER; IONS; NANOCOMPOSITE; MECHANISMS; SEPARATION; STABILITY;

D O I：

10.1021/acs.inorgchem.6b00522

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

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.

引用

页码：5507 / 5513

页数：7

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