Modification of ZIF-8 with triethylamine molecules for enhanced iodine and bromine adsorption

被引：23

作者：

Butova, Vera V. ^{[1
]}

Polyakov, V. A. ^{[1
]}

Erofeeva, E. A. ^{[1
]}

Yahia, Ibrahim S. ^{[2
,3
]}

Zahran, Heba Y. ^{[2
,3
]}

Abd El-Rehim, Alaa F. ^{[2
,3
]}

Aboraia, Abdelaziz M. ^{[1
,4
]}

Soldatov, A. V. ^{[1
]}

机构：

[1] Southern Fed Univ, Smart Mat Res Inst, Sladkova 178-24, Rostov Na Donu 344090, Russia

[2] King Khalid Univ, Fac Sci, Dept Phys, Adv Funct Mat & Optoelect Lab, POB 9004, Abha, Saudi Arabia

[3] Ain Shams Univ, Fac Educ, Nanosci Lab Environm & Biomed Applicat NLEBA, Semicond Lab,Dept Phys, Cairo 11757, Egypt

[4] Al Azhar Univ, Dept Phys, Fac Sci, Assiut 71542, Egypt

来源：

INORGANICA CHIMICA ACTA | 2020年 / 509卷

关键词：

CHARGE-TRANSFER COMPLEXES; IMIDAZOLATE FRAMEWORK-8 ZIF-8; ROOM-TEMPERATURE SYNTHESIS; SURFACE-AREA; NANOCRYSTALS; STABILITY; SOLVENT; SYSTEM; VAPOR;

D O I：

10.1016/j.ica.2020.119678

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

We report a new way to enhance halogen capping properties of ZIF-8 and to protect its structure in a slightly acidic medium. We observed that triethylamine additive in hydrothermal conditions results in modification of the ZIF-8 structure. Triethylamine molecules, which are trapped inside pores, increase the rate of iodine sorption both from hexane and methanol solutions. Moreover, the solution of iodine in methanol has an acidic medium, and it leads to the decomposition of non-modified ZIF-8 sample, while sample obtained in water with triethylamine preserve structure and effectively adsorb iodine. However, bromine molecules were capped by both ZIF-8 samples after 5 min of contact. It makes an eco-friendly scalable hydrothermal synthesis of ZIF-8 more attractive because it combines high crystallinity and porosity of obtained materials with modifications allowed to enhance iodine capping properties and chemical stability. © 2020 Elsevier B.V.

引用

页数：5

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