Efficient capture and stabilization of iodine via gas-solid reaction using cyclodextrin metal-organic frameworks.

Abstract

For treatment of wound infection with stabilized iodine, potassium iodide cyclodextrin metal-organic frameworks (KI-CD-MOF) was prepared to carry iodine via gas-solid reaction. Apart from highly ordered porous frameworks, KI-CD-MOF contains uniformly distributed iodide ions which stabilize iodine (I2). X-ray photoelectron spectroscopy and potentiometric titration were utilized to confirm the formation of I3- in the highly porous KI-CD-MOF as I2@KI-CD-MOF. Molecular simulation and characterizations of the synchrotron radiation Fourier transform infrared spectroscopy, differential scanning calorimeter, powder X-ray diffraction and N2 adsorption were conducted to illustrate the inclusion mechanism of iodine in I2@KI-CD-MOF. The apparent solubility of iodine in water was 3.86 times enhanced. The stability and antibacterial activity tests demonstrated that the highly-dispersed iodide ions in KI-CD-MOF are crucial in improvement to the solubility, stability, and bacteriostatic effects of active iodide. Therefore, KI-CD-MOF has broad application prospects and advantages in efficiently capturing and stabilizing iodine.

• Authors: Jiacai Chen, Tao Guo, Xiaohong Ren, Ting Yang, Kaikai Zhang, Yuhua Guo, Xiaojin Chen, Shuangying Gui, Shujun Wang, Qianqian Li, Can Peng, Jiwen Zhang, Li Wu
• Journal: Carbohydrate polymers (Carbohydr Polym) Vol. 291 Pg. 119507 (Sep 01 2022) ISSN: 1879-1344 [Electronic] England
• PMID: 35698323 (Publication Type: Journal Article)
• Copyright: Copyright © 2022 Elsevier Ltd. All rights reserved.

Chemical References

• Cyclodextrins
• Iodides
• Metal-Organic Frameworks
• Iodine

Topics

• Cyclodextrins (chemistry)
• Iodides
• Iodine
• Metal-Organic Frameworks (chemistry)
• Solubility