Ultrasonic controllable synthesis of sulfur-functionalized metal–organic frameworks (S-MOFs) and their application in piezo-photocatalytic rapid reduction of hexavalent chromium (Cr)

Zhiwei Liu; Jingjing Wang; Shanghai Dong; Liying Wang; Lu Li; Zhenzhu Cao; Yongfeng Zhang; Lin Cheng; Jucai Yang

Ultrasonics Sonochemistry (Jul 2024)

Ultrasonic controllable synthesis of sulfur-functionalized metal–organic frameworks (S-MOFs) and their application in piezo-photocatalytic rapid reduction of hexavalent chromium (Cr)

Zhiwei Liu,
Jingjing Wang,
Shanghai Dong,
Liying Wang,
Lu Li,
Zhenzhu Cao,
Yongfeng Zhang,
Lin Cheng,
Jucai Yang

Affiliations

Zhiwei Liu: School of Chemical Engineering, Inner Mongolia University of Technology, Inner Mongolia Key Laboratory of Theoretical and Computational Chemistry Simulation, National & Local Joint Engineering Research Center of High-Value Utilization of Coal-Based Solid Waste, Institute of Coal Conversion and Cyclic Economy, Hohhot, 010051, People’s Republic of China
Jingjing Wang: School of Chemical Engineering, Inner Mongolia University of Technology, Inner Mongolia Key Laboratory of Theoretical and Computational Chemistry Simulation, National & Local Joint Engineering Research Center of High-Value Utilization of Coal-Based Solid Waste, Institute of Coal Conversion and Cyclic Economy, Hohhot, 010051, People’s Republic of China
Shanghai Dong: School of Chemical Engineering, Inner Mongolia University of Technology, Inner Mongolia Key Laboratory of Theoretical and Computational Chemistry Simulation, National & Local Joint Engineering Research Center of High-Value Utilization of Coal-Based Solid Waste, Institute of Coal Conversion and Cyclic Economy, Hohhot, 010051, People’s Republic of China
Liying Wang: Corresponding author.; School of Chemical Engineering, Inner Mongolia University of Technology, Inner Mongolia Key Laboratory of Theoretical and Computational Chemistry Simulation, National & Local Joint Engineering Research Center of High-Value Utilization of Coal-Based Solid Waste, Institute of Coal Conversion and Cyclic Economy, Hohhot, 010051, People’s Republic of China
Lu Li: School of Chemical Engineering, Inner Mongolia University of Technology, Inner Mongolia Key Laboratory of Theoretical and Computational Chemistry Simulation, National & Local Joint Engineering Research Center of High-Value Utilization of Coal-Based Solid Waste, Institute of Coal Conversion and Cyclic Economy, Hohhot, 010051, People’s Republic of China
Zhenzhu Cao: School of Chemical Engineering, Inner Mongolia University of Technology, Inner Mongolia Key Laboratory of Theoretical and Computational Chemistry Simulation, National & Local Joint Engineering Research Center of High-Value Utilization of Coal-Based Solid Waste, Institute of Coal Conversion and Cyclic Economy, Hohhot, 010051, People’s Republic of China
Yongfeng Zhang: School of Chemical Engineering, Inner Mongolia University of Technology, Inner Mongolia Key Laboratory of Theoretical and Computational Chemistry Simulation, National & Local Joint Engineering Research Center of High-Value Utilization of Coal-Based Solid Waste, Institute of Coal Conversion and Cyclic Economy, Hohhot, 010051, People’s Republic of China
Lin Cheng: School of Chemical Engineering, Inner Mongolia University of Technology, Inner Mongolia Key Laboratory of Theoretical and Computational Chemistry Simulation, National & Local Joint Engineering Research Center of High-Value Utilization of Coal-Based Solid Waste, Institute of Coal Conversion and Cyclic Economy, Hohhot, 010051, People’s Republic of China
Jucai Yang: School of Chemical Engineering, Inner Mongolia University of Technology, Inner Mongolia Key Laboratory of Theoretical and Computational Chemistry Simulation, National & Local Joint Engineering Research Center of High-Value Utilization of Coal-Based Solid Waste, Institute of Coal Conversion and Cyclic Economy, Hohhot, 010051, People’s Republic of China

Journal volume & issue: Vol. 107
p. 106912

Abstract

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The United Nations’ Sustainable Development Goals (SDGs) are significant in guiding modern scientific research. In recent years, scholars have paid much attention to MOFs materials as green materials. However, piezo catalysis of MOFs materials has not been widely studied. Piezoelectric materials can convert mechanical energy into electrical energy, while MOFs are effective photocatalysts for removing pollutants. Therefore, it is crucial to design MOFs with piezoelectric properties and photosensitivity. In this study, sulfur-functionalized metal–organic frameworks (S-MOFs) were prepared using organic sulfur-functionalized ligand (H2TDC) ultrasonic synthesis to enhance their piezoelectric properties and visible light absorption. The study demonstrated that the S-MOFs significantly enhanced the reduction of a 10 mg/L solution of hexavalent chromium to 99.4 % within 10 min, using only 15 mg of catalyst. The orbital energy level differences of the elements were analyzed using piezo response force microscopy (PFM) and X-ray photoelectron spectroscopy (XPS). The results showed that MOFs functionalized with sulfur atom ligands have a built-in electric field that facilitates charge separation and migration. This study presents a new approach to enhance the piezoelectric properties of MOFs, which broadens their potential applications in piezo catalysis and piezo-photocatalysis. Additionally, it provides a sustainable method for reducing hexavalent chromium, contributing to the achievement of sustainable development goals, specifically SDG-6, SDG-7, SDG-9, and SDG-12.

Published in Ultrasonics Sonochemistry

ISSN: 1350-4177 (Print); 1873-2828 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Chemistry; Science: Physics: Acoustics. Sound
Website: https://www.journals.elsevier.com/ultrasonics-sonochemistry

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