1
|
Liu Z, Wang J, Dong S, Wang L, Li L, Cao Z, Zhang Y, Cheng L, Yang J. Ultrasonic controllable synthesis of sulfur-functionalized metal-organic frameworks (S-MOFs) and their application in piezo-photocatalytic rapid reduction of hexavalent chromium (Cr). ULTRASONICS SONOCHEMISTRY 2024; 107:106912. [PMID: 38762940 PMCID: PMC11130732 DOI: 10.1016/j.ultsonch.2024.106912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 05/06/2024] [Accepted: 05/14/2024] [Indexed: 05/21/2024]
Abstract
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.
Collapse
Affiliation(s)
- 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
- 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
| |
Collapse
|
2
|
Recent Progress in Photocatalytic Removal of Environmental Pollution Hazards in Water Using Nanostructured Materials. SEPARATIONS 2022. [DOI: 10.3390/separations9100264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Water pollution has become a critical issue because of the Industrial Revolution, growing populations, extended droughts, and climate change. Therefore, advanced technologies for wastewater remediation are urgently needed. Water contaminants are generally classified as microorganisms and inorganic/organic pollutants. Inorganic pollutants are toxic and some of them are carcinogenic materials, such as cadmium, arsenic, chromium, cadmium, lead, and mercury. Organic pollutants are contained in various materials, including organic dyes, pesticides, personal care products, detergents, and industrial organic wastes. Nanostructured materials could be potential candidates for photocatalytic reduction and for photodegradation of organic pollutants in wastewater since they have unique physical, chemical, and optical properties. Enhanced photocatalytic performance of nanostructured semiconductors can be achieved using numerous techniques; nanostructured semiconductors can be doped with different species, transition metals, noble metals or nonmetals, or a luminescence agent. Furthermore, another technique to enhance the photocatalytic performance of nanostructured semiconductors is doping with materials that have a narrow band gap. Nanostructure modification, surface engineering, and heterojunction/homojunction production all take significant time and effort. In this review, I report on the synthesis and characterization of nanostructured materials, and we discuss the photocatalytic performance of these nanostructured materials in reducing environmental pollutants.
Collapse
|