Catalytic ozone decomposition and adsorptive VOCs removal in bimetallic metal-organic frameworks

Chen Dong; Jia-Jia Yang; Lin-Hua Xie; Ganglong Cui; Wei-Hai Fang; Jian-Rong Li

doi:10.1038/s41467-022-32678-2

Catalytic ozone decomposition and adsorptive VOCs removal in bimetallic metal-organic frameworks

Nat Commun. 2022 Aug 25;13(1):4991. doi: 10.1038/s41467-022-32678-2.

Authors

Chen Dong^#¹, Jia-Jia Yang^#², Lin-Hua Xie³, Ganglong Cui⁴, Wei-Hai Fang², Jian-Rong Li⁵

Affiliations

¹ Beijing Key Laboratory for Green Catalysis and Separation, and Department of Environmental Chemical Engineering, Beijing University of Technology, 100124, Beijing, China.
² Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, 100875, Beijing, China.
³ Beijing Key Laboratory for Green Catalysis and Separation, and Department of Environmental Chemical Engineering, Beijing University of Technology, 100124, Beijing, China. xielinhua@bjut.edu.cn.
⁴ Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, 100875, Beijing, China. ganglong.cui@bnu.edu.cn.
⁵ Beijing Key Laboratory for Green Catalysis and Separation, and Department of Environmental Chemical Engineering, Beijing University of Technology, 100124, Beijing, China. jrli@bjut.edu.cn.

^# Contributed equally.

Abstract

Atmospheric ozone has long been a threat to human health, however, rational design of high-performance O₃-decomposition catalysts remains challenging. Herein, we demonstrate the great potential of a series of isomorphous bimetallic MOFs denoted as PCN-250(Fe₂M) (M = Co²⁺, Ni²⁺, Mn²⁺) in catalytic O₃ decomposition. Particularly, PCN-250(Fe₂Co) showed 100% O₃ removal efficiency for a continuous air flow containing 1 ppm O₃ over a wide humidity range (0 ‒ 80% RH) at room temperature. Mechanism studies suggested that the high catalytic performance originated from the introduction of open Co(II) sites as well as its porous structure. Additionally, at low pressures around 10 Pa, PCN-250(Fe₂Co) exhibited high adsorption capacities (89 ‒ 241 mg g^-1) for most VOCs, which are not only a class of hazardous air pollutants but also the precursor of O₃. This work opens up a new avenue to develop advanced air purification materials for O₃ and VOCs removal in one.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Adsorption
Catalysis
Humans
Metal-Organic Frameworks*
Ozone* / chemistry

Substances

Metal-Organic Frameworks
Ozone