Efficient elimination of organic contaminants with novel and stable zeolite@MOF layer adsorbents--颗粒学报PARTICUOLOGY

Wu, J., Zhu, Y., Xue, K., Lu, Y., Hu, J., & Dai, W. (2021). Efficient elimination of organic contaminants with novel and stable zeolite@MOF layer adsorbents. Particuology, 58, 74-84. https://doi.org/10.1016/j.partic.2021.01.014

Efficient elimination of organic contaminants with novel and stable zeolite@MOF layer adsorbents

Jiafei Wu ^a, Yingzhi Zhu ^a, Kunpeng Xue ^b, Yan Lu ^a, Jiahao Hu ^a, Wei Dai ^a *

a Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Science, Zhejiang Normal University, Jinhua 321004, China
b Welch Materials (Zhejiang), Inc., Jinhua 321000, China

10.1016/j.partic.2021.01.014

Volume 58, October 2021, Pages 74-84

Received 1 December 2020, Revised 26 January 2021, Accepted 28 January 2021, Available online 18 March 2021, Version of Record 27 March 2021.

E-mail: daiwei@zjnu.edu.cn

Highlights

• A novel millimeter-scale 13X@MOF composite was designed and fabricated.

• 13X@UIO-66 notably exhibited excellent stability immersed in water, strong acidic, and basic aqueous media.

• OC capture abilities of 13X@UiO-66 only exhibited slight change after the fifth round.

Abstract

Many metal–organic frameworks (MOFs) trapped in water exhibit instability and small-particle agglomeration issues, which unquestionably constrain their potential applications, such as the capture of organic contaminants (OCs). In this study, four types of micron-sized MOFs (Zn/Cu-BTC, MOF-5, ZIF-8, and UiO-66) were grown within a zeolite-13X support to form millimeter-sized zeolite-13X@MOF composites for the elimination of benzothiophene, methyl orange, and tetracycline from the liquid phase by dynamic adsorption in a column. We observed that the 13X@Zn/Cu-BTC exhibited extraordinarily high OC capture capacities as a result of the Zn²⁺ and Cu²⁺ combinative effects of the acid–base interaction. Remarkably, the 13X@UiO-66 preserved its structural integrity when immersed in water for 15 days, in contact with boiling water for 12 h, and in both strong acidic and basic aqueous media. Moreover, the OC capture abilities of the 13X@UiO-66 only underwent a slight change after the fifth round. This work provides new method for the design of desirable millimeter-sized zeolite@MOFs, thereby advancing their practical application for OC capture.

Graphical abstract

Keywords

Zeolite; MOFs; Adsorption; Organic contaminants

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