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He X, Marken F, Vertova A, Minguzzi A. Roles of oxygen vacancies in layered double hydroxides-based catalysts for wastewater remediation: fundamentals and prospects. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2025; 385:125583. [PMID: 40334417 DOI: 10.1016/j.jenvman.2025.125583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2025] [Revised: 04/15/2025] [Accepted: 04/26/2025] [Indexed: 05/09/2025]
Abstract
Wastewater globally is a significant concern for environmental health and for the sustainable management of water resources. Catalysed based advanced oxidation processes (AOP), as a relatively low operation cost and high removal efficiency of pollutants method, has a promising potential to treat the wastewater. Among the numerous catalysts, Layered Double Hydroxides (LDHs) stands out for lamellar structure, high charge density, and tuneable properties. Meanwhile, oxygen vacancies engineering could modulate the electronic properties of materials and create active centres to regulate the poor charge transfer capability of LDHs. In this regard, this review is focused on how to create and confirm the oxygen vacancies, as well as the applications of the wastewater treatment from different AOPs. It starts with the synthesized of oxygen vacancies via chemical reduction method, plasma etching method, hydrothermal treatment method, ion doping strategy. Followed by the description of characterization methods, including EPR, XPS, XAS, Raman. Finally, the role of oxygen vacancies in LDHs for contaminant removal across various systems, including photocatalysis, electrocatalysis, Fenton reactions, and sulfate radical-based processes, was thoroughly examined and analyzed.
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Affiliation(s)
- Xiufang He
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133, Milan, Italy
| | - Frank Marken
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AYUK
| | - Alberto Vertova
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133, Milan, Italy; Istituto Nazionale di Scienza e Tecnologia dei Materiali, via Giusti 9, Firenze, Italy.
| | - Alessandro Minguzzi
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133, Milan, Italy; Istituto Nazionale di Scienza e Tecnologia dei Materiali, via Giusti 9, Firenze, Italy; Dipartimento di Energia, Politecnico di Milano, Via Lambruschini, 4a, 20156, Milano, Italy
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Qiu Z, Liu Y, Cheng W, Ding C. Leaching Peculiarity of Uranium-Containing Layered Double Hydroxide Sediment Varied with Environmental Anions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:22256-22264. [PMID: 39399978 DOI: 10.1021/acs.langmuir.4c02847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2024]
Abstract
In this research, we focus our attention on the leaching peculiarity of uranium-containing Mg-Al layered double hydroxide (LDH) which is one kind of waste sediment in uranium tailings, generated by the alkalinization of uranyl raffinate. The effect of inorganic (CO32-, SO42-, PO43-) and organic (C2O42-, C6H6O72-, C6H16O24P62-) anions were investigated. Atomic force microscopy result showed that the thickness of CO32--LDH increased to 8.6 nm compared to original LDH whose thickness was 6.7 nm. Compared with the control sample (5.58 μm), the grain size with C6H16O24P62- anion grew to 7.04 μm. A large amount of CO32- can stay in LDH, up to 1.78 mol percent, while the C6H16O24P62- anion was only 0.41 mol percent. X-ray diffraction results showed that the anions could change the crystal structure of LDH, especially the C6H18O24P6 anion, and theoretical calculation also conformed this result. The leaching tests showed that the introduction of anions improved the leaching efficiency of UO22+ from LDH. The introduction of anions destroyed the super buffer property of LDH. Theoretical calculation results indicated that the anions could grab UO22+ and help the UO22+ escape from the LDH. This research gave guidance for long-term disposal of uranium-containing tailings.
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Affiliation(s)
- Ze Qiu
- Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang 621010, PR China
- School of National Defence Science & Technology, Southwest University of Science and Technology, Mianyang 621010, PR China
| | - Yingzhangyang Liu
- Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang 621010, PR China
- School of National Defence Science & Technology, Southwest University of Science and Technology, Mianyang 621010, PR China
| | - Wencai Cheng
- Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang 621010, PR China
- School of National Defence Science & Technology, Southwest University of Science and Technology, Mianyang 621010, PR China
| | - Congcong Ding
- Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang 621010, PR China
- School of National Defence Science & Technology, Southwest University of Science and Technology, Mianyang 621010, PR China
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Xu J, Cheng H, Zhang H, Sun C, Tian H, Yang J, Ding Y, Lin X, Wang P, Huang C. Visible light irradiation enhanced sulfidated zero-valent iron/peroxymonosulfate process for organic pollutant degradation. ENVIRONMENTAL RESEARCH 2024; 257:119292. [PMID: 38824982 DOI: 10.1016/j.envres.2024.119292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 05/15/2024] [Accepted: 05/30/2024] [Indexed: 06/04/2024]
Abstract
This study developed a novel process named sulfidated zero-valent iron/peroxymonosulfate/visible light irradiation (S-mZVI/PMS/vis) for enhanced organic pollutant degradation. The S-mZVI/PMS/vis process exhibited remarkable catalytic activity, achieving a 99.6% rhodamine B (RhB) removal within 10 min. The degradation rate constant of RhB by the S-mZVI/PMS/vis process was found to be 6.49 and 79.84 times higher than that by the S-mZVI/PMS and PMS/vis processes, respectively. Furthermore, the S-mZVI/PMS/vis process worked efficiently across a wide pH range (3.0-9.0), and the result of five-cycle experiments demonstrated the excellent reusability and stability of S-mZVI. Radical quenching tests and electron paramagnetic resonance analysis indicated that ·O2-, 1O2, and h+ significantly contributed to the degradation of RhB through the S-mZVI/PMS/vis process. The visible light irradiation increased the Fe2+ concentration, improved the Fe3+/Fe2+ cycle, and consequently enhanced the PMS decomposition, reactive species production, and RhB degradation. This work offers a promising strategy to highly efficiently activate PMS for organic pollutants elimination from aqueous solutions.
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Affiliation(s)
- Jialu Xu
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China; Hunan Key Laboratory of Wetland and Soil Ecological Restoration, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Hao Cheng
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China; Hunan Key Laboratory of Wetland and Soil Ecological Restoration, Central South University of Forestry and Technology, Changsha, 410004, China
| | - He Zhang
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China; Hunan Key Laboratory of Wetland and Soil Ecological Restoration, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Chengyou Sun
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China; Hunan Key Laboratory of Wetland and Soil Ecological Restoration, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Haoran Tian
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China; Hunan Key Laboratory of Wetland and Soil Ecological Restoration, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Jikun Yang
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China; Hunan Key Laboratory of Wetland and Soil Ecological Restoration, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Yingxin Ding
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China; Hunan Key Laboratory of Wetland and Soil Ecological Restoration, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Xuan Lin
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China; Hunan Key Laboratory of Wetland and Soil Ecological Restoration, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Ping Wang
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China; Hunan Key Laboratory of Wetland and Soil Ecological Restoration, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Chao Huang
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China; Hunan Key Laboratory of Wetland and Soil Ecological Restoration, Central South University of Forestry and Technology, Changsha, 410004, China.
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Zarandona A, Salazar H, Insausti M, Lanceros-Méndez S, Zhang Q. Sonophotocatalytic removal of organic dyes in real water environments using reusable BiSI@PVDF-HFP nanocomposite membranes. CHEMOSPHERE 2024; 357:142069. [PMID: 38648986 DOI: 10.1016/j.chemosphere.2024.142069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 04/09/2024] [Accepted: 04/15/2024] [Indexed: 04/25/2024]
Abstract
Focusing on the uncontrolled discharge of organic dyes, a known threat to human health and aquatic ecosystems, this work employs a dual-functional catalyst approach, by immobilizing a synthesized bismuth sulfur iodide (BiSI) into a poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) polymeric matrix for multifunctional water remediation. The resulting BiSI@PVDF nanocomposite membrane (NCM), with 20 wt% filler content, maintains a highly porous structure without compromising morphology or thermal properties. Demonstrating efficiency in natural pH conditions, the NCM removes nearly all Rhodamine B (RhB) within 1 h, using a combined sonophotocatalytic process. Langmuir and pseudo-second-order models describe the remediation process, achieving a maximum removal capacity (Qmax) of 72.2 mg/g. In addition, the combined sonophotocatalysis achieved a degradation rate ten and five times higher (0.026 min-1) than photocatalysis (0.002 min-1) and sonocatalysis (0.010 min-1). Furthermore, the NCM exhibits notable reusability over five cycles without efficiency losses and efficiencies always higher than 90%, highlighting its potential for real water matrices. The study underscores the suitability of BiSI@PVDF as a dual-functional catalyst for organic dye degradation, showcasing synergistic adsorption, photocatalysis, and sonocatalysis for water remediation.
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Affiliation(s)
- Amaia Zarandona
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940, Leioa, Spain.
| | - Hugo Salazar
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940, Leioa, Spain.
| | - Maite Insausti
- Departamento Química Orgánica e Inorgánica, Facultad de Ciencia y Tecnología, University of the Basque Country (UPV/EHU), Sarriena s/n, 48940, Leioa, Spain
| | - Senentxu Lanceros-Méndez
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940, Leioa, Spain; IKERBASQUE, Basque Foundation for Science, 48013, Bilbao, Spain
| | - Qi Zhang
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940, Leioa, Spain; IKERBASQUE, Basque Foundation for Science, 48013, Bilbao, Spain.
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Dung NT, Ha DTH, Thao VD, Thao NP, Lam TD, Lan PT, Trang TT, Ngan LV, Nhi BD, Thuy NT, Lin KYA, Huy NN. Effective activation of peroxymonosulfate by CoCr-LDH for removing organic contaminants in water: from lab-scale to practical applications. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:26773-26789. [PMID: 38456975 DOI: 10.1007/s11356-024-32776-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 03/01/2024] [Indexed: 03/09/2024]
Abstract
In this study, CoCr layered double hydroxide material (CoCr-LDH) was prepared and used as an effective catalyst for peroxymonosulfate (PMS) activation to degrade organics in water. The prepared CoCr-LDH material had a crystalline structure and relatively porous structure, as determined by various surface analyses. In Rhodamine B (RhB) removal, the most outstanding PMS activation ability belongs to the material with a Co:Cr molar ratio of 2:1. The removal of RhB follows pseudo-first-order kinetics (R2 > 0.99) with an activation energy of 38.23 kJ/mol and efficiency of 98% after 7 min of treatment, and the total organic carbon of the solution reduced 47.2% after 10 min. The activation and oxidation mechanisms were proposed and the RhB degradation pathways were suggested with the key contribution of O2•- and 1O2. Notably, CoCr-LDH can activate PMS over a wide pH range of 4 - 9, and apply to a wide range of organic pollutants and aqueous environments. The material has high stability and good recovery, which can be reused for 5 cycles with a stable efficiency of above 88%, suggesting a high potential for practical recalcitrant water treatment via PMS activation by heterogeneous catalysts.
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Affiliation(s)
- Nguyen Trung Dung
- Faculty of Physics and Chemical Engineering, Le Quy Don Technical University, 236 Hoang Quoc Viet St., Bac Tu Liem District, Hanoi, Vietnam
| | - Do Thi Hong Ha
- Faculty of Physics and Chemical Engineering, Le Quy Don Technical University, 236 Hoang Quoc Viet St., Bac Tu Liem District, Hanoi, Vietnam
| | - Vu Dinh Thao
- Faculty of Physics and Chemical Engineering, Le Quy Don Technical University, 236 Hoang Quoc Viet St., Bac Tu Liem District, Hanoi, Vietnam
| | - Nguyen Phuong Thao
- Faculty of Physics and Chemical Engineering, Le Quy Don Technical University, 236 Hoang Quoc Viet St., Bac Tu Liem District, Hanoi, Vietnam
| | - Tran Dai Lam
- Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Pham Thi Lan
- Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Tran Thi Trang
- Institute of Environmental Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay District, Hanoi, Viet Nam
| | - Le Viet Ngan
- National Institute for Food Control, 65 Pham Than Duat Street, Mai Dich Ward, Cau Giay District, Hanoi, Vietnam
| | - Bui Dinh Nhi
- Faculty of Environmental Technology, Viet Tri University of Industry, 9 Tien Sơn Street, Tien Cat District, Phu Tho, Viet Nam
| | - Nguyen Thi Thuy
- School of Environmental Engineering, International University, Quarter 6, Linh Trung Ward, Thu Duc City, Ho Chi Minh City, Vietnam
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc City, Ho Chi Minh City, Vietnam
| | - Kun-Yi Andrew Lin
- Innovation and Development Center of Sustainable Agriculture and Department of Environmental Engineering, National Chung Hsing University, 250 Kuo-Kuang Road, Taichung, Taiwan
| | - Nguyen Nhat Huy
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc City, Ho Chi Minh City, Vietnam.
- Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam.
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Shi Y, Nie C, Jiang S, Wang H, Feng Y, Gao J, Tang L, Song P. Tunable construction of fire safe and mechanically strong hierarchical composites towards electromagnetic interference shielding. J Colloid Interface Sci 2023; 652:1554-1567. [PMID: 37660612 DOI: 10.1016/j.jcis.2023.08.191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 08/28/2023] [Accepted: 08/30/2023] [Indexed: 09/05/2023]
Abstract
Cotton fabric composites were designed to be protected by fire safe thermoplastic polyurethane (TPU) composites for developing electromagnetic interference (EMI) shielding polymer composites with superior mechanical properties. Herein, the as-prepared MXene was coated onto the fiber surface of cotton and then thermally compressed with TPU composites, which were filled with the sodium dodecyl sulfate modified layered double hydroxides functionalized the short carbon fiber hybrids through melt blending method. Then, a series of highly fire safe cotton/TPU hierarchical composites were constructed by a designed thermal compression technique. For instance, the obtained cotton/TPU hierarchical sample showed greatly reduced peak of heat release rate, peak of carbon monoxide production rate and peak of carbon dioxide production rate of TPU by 50.1%, 52.1% and 55.4%, respectively. Furthermore, the cotton/TPU hierarchical composites possessed the EMI shielding effectiveness of 40.0 dB in the X band and 54.6 dB in the K band. The mechanical property of the cotton/TPU hierarchical composites was also reinforced, where the elongation at break and toughness values of the TPU/SCF/mLDH1/C2 hierarchical composite were 21.47 and 18.30 times higher than those of pure TPU, respectively. These mechanically strong hierarchical composites have brought a promising attempt to broaden their practical application, removing the fire hazards and electromagnetic waves radiation from the environment.
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Affiliation(s)
- Yongqian Shi
- College of Environment and Safety Engineering, Fuzhou University, Fuzhou 350116, China.
| | - Chenxin Nie
- College of Environment and Safety Engineering, Fuzhou University, Fuzhou 350116, China
| | - Songqiong Jiang
- College of Environment and Safety Engineering, Fuzhou University, Fuzhou 350116, China
| | - Hengrui Wang
- College of Environment and Safety Engineering, Fuzhou University, Fuzhou 350116, China
| | - Yuezhan Feng
- Key Laboratory of Materials Processing and Mold Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, China
| | - Jiefeng Gao
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Longcheng Tang
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Pingan Song
- Centre for Future Materials, University of Southern Queensland, Springfield, QLD 4300, Australia; School of Agriculture and Environmental Science, University of Southern Queensland, Springfield, QLD 4300, Australia
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Lu X, Wang K, Wu D, Xiao P. Rapid degradation and detoxification of metronidazole using calcium sulfite activated by CoCu two-dimensional layered bimetallic hydroxides: Performance, mechanism, and degradation pathway. CHEMOSPHERE 2023; 341:140150. [PMID: 37709064 DOI: 10.1016/j.chemosphere.2023.140150] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 09/10/2023] [Accepted: 09/11/2023] [Indexed: 09/16/2023]
Abstract
In this study, cobalt copper-layered double hydroxides (CoCu-LDHs) were prepared by coprecipitation as catalysts to activate CaSO3 for metronidazole (MNZ) degradation. This is the first report on layered double hydroxides activating sulfite for the degradation of organic pollutants. Meanwhile, to address the issue of self-quenching reactions readily occurring in conventional sulfite advanced oxidation systems and resulting in low oxidant efficiency, CaSO3 with slightly soluble in water was used instead of commonly used Na2SO3, to improve the limitations of traditional systems. The results showed that in the CoCu-LDHs/CaSO3 system, the degradation rate of MNZ reached 98.7% within 5 min, representing a 23.0% increase compared to the CoCu-LDHs/Na2SO3 system. Owing to the excellent catalytic performance exhibited by CoCu-LDHs, characterizations including XRD, FTIR, SEM, TEM, BET and XPS were carried out to investigate this further. The results confirmed the successful synthesis of CoCu-LDH, and the activation mechanism study revealed that Co and Cu were considered to the main elements in activating CaSO3, demonstrating good synergistic effects. In addition, the oxygen vacancies on the catalyst surface also played a positive role in generating radicals and promoting electron transfer. Subsequently, the effects of Co/Cu ratio, catalyst dosage, oxidant concentration, pollutant concentration, pH and coexisting substances on MNZ degradation were investigated. Additionally, based on the LC-MS analysis of degradation products and toxicity tests, MNZ was transformed into different intermediates with low toxicity through four pathways, eventually mineralizing into inorganic small molecules. After six cycles, the MNZ degradation rate still reached 82.1%, exhibiting excellent stability and recyclability. In general, this study provides new ideas for activating sulfite, while providing theoretical support for subsequent research on sulfite advanced oxidation system.
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Affiliation(s)
- Xiaoyan Lu
- College of Forestry, Northeast Forestry University, Harbin, 150040, China
| | - Kai Wang
- College of Forestry, Northeast Forestry University, Harbin, 150040, China
| | - Dedong Wu
- College of Forestry, Northeast Forestry University, Harbin, 150040, China
| | - Pengfei Xiao
- College of Forestry, Northeast Forestry University, Harbin, 150040, China.
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