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Salahshoori I, Yazdanbakhsh A, Namayandeh Jorabchi M, Kazemabadi FZ, Khonakdar HA, Mohammadi AH. Recent advances and applications of stimuli-responsive nanomaterials for water treatment: A comprehensive review. Adv Colloid Interface Sci 2024; 333:103304. [PMID: 39357211 DOI: 10.1016/j.cis.2024.103304] [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: 04/30/2024] [Revised: 08/16/2024] [Accepted: 09/18/2024] [Indexed: 10/04/2024]
Abstract
The development of stimuli-responsive nanomaterials holds immense promise for enhancing the efficiency and effectiveness of water treatment processes. These smart materials exhibit a remarkable ability to respond to specific external stimuli, such as light, pH, or magnetic fields, and trigger the controlled release of encapsulated pollutants. By precisely regulating the release kinetics, these nanomaterials can effectively target and eliminate contaminants without compromising the integrity of the water system. This review article provides a comprehensive overview of the advancements in light-activated and pH-sensitive nanomaterials for controlled pollutant release in water treatment. It delves into the fundamental principles underlying these materials' stimuli-responsive behaviour, exploring the design strategies and applications in various water treatment scenarios. In particular, the article indicates how integrating stimuli-responsive nanomaterials into existing water treatment technologies can significantly enhance their performance, leading to more sustainable and cost-effective solutions. The synergy between these advanced materials and traditional treatment methods could pave the way for innovative approaches to water purification, offering enhanced selectivity and efficiency. Furthermore, the review highlights the critical challenges and future directions in this rapidly evolving field, emphasizing the need for further research and development to fully realize the potential of these materials in addressing the pressing challenges of water purification.
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Affiliation(s)
- Iman Salahshoori
- Department of Polymer Processing, Iran Polymer and Petrochemical Institute, Tehran, Iran; Department of Chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.
| | - Amirhosein Yazdanbakhsh
- Department of Polymer Engineering, School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | | | - Fatemeh Zare Kazemabadi
- Department of Chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Hossein Ali Khonakdar
- Department of Polymer Processing, Iran Polymer and Petrochemical Institute, Tehran, Iran
| | - Amir H Mohammadi
- Discipline of Chemical Engineering, School of Engineering, University of KwaZulu-Natal, Howard College Campus, King George V Avenue, Durban 4041, South Africa.
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2
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Myakala SN, Ladisich M, Ayala P, Rabl H, Batool S, Elsaesser MS, Cherevan A, Eder D. Harnessing a Ti-based MOF for selective adsorption and visible-light-driven water remediation. JOURNAL OF MATERIALS CHEMISTRY. A 2024; 12:19924-19934. [PMID: 39114767 PMCID: PMC11302510 DOI: 10.1039/d4ta01967a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Accepted: 06/04/2024] [Indexed: 08/10/2024]
Abstract
In pursuit of universal access to clean water, photocatalytic water remediation using metal-organic frameworks (MOFs) emerges as a strong alternative to the current wastewater treatment methods. In this study, we explore a unique Ti-based MOF comprised of 2D secondary-building units (SBUs) connected via biphenyl dicarboxylic acid (H2bpdc) ligands - denoted as COK-47 - as a visible-light-driven photocatalyst for organic dye degradation. Synthesized via a recently developed microwave-assisted method, COK-47 exhibits high hydrolytic stability, demonstrates a strong dye uptake, and shows noteworthy dye-degradation performance under UV, visible, and solar light, outperforming benchmark TiO2 and MIL-125-Ti photocatalysts. Due to its nanocrystalline structure and surface termination with organic linkers, COK-47 exhibits selective degradation of cationic pollutants while remaining inert towards anionic dyes, thus highlighting its potential for selective oxidation reactions. Mechanistic studies reveal the involvement of superoxide radicals in the degradation process and emphasize the need to minimize the recombination of photogenerated electron-hole pairs to achieve optimal performance. Post-catalytic studies further confirm the high stability and reusability of COK-47, making it a promising photocatalyst for water purification, organic transformation, and water splitting reactions under visible light.
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Affiliation(s)
- Stephen Nagaraju Myakala
- Institute of Materials Chemistry, Division of Molecular Materials Chemistry, TU Wien Getreidemarkt 9/BC/02 1060 Vienna Austria
| | - Magdalena Ladisich
- Institute of Materials Chemistry, Division of Molecular Materials Chemistry, TU Wien Getreidemarkt 9/BC/02 1060 Vienna Austria
| | - Pablo Ayala
- Institute of Materials Chemistry, Division of Molecular Materials Chemistry, TU Wien Getreidemarkt 9/BC/02 1060 Vienna Austria
| | - Hannah Rabl
- Institute of Materials Chemistry, Division of Molecular Materials Chemistry, TU Wien Getreidemarkt 9/BC/02 1060 Vienna Austria
| | - Samar Batool
- Institute of Materials Chemistry, Division of Molecular Materials Chemistry, TU Wien Getreidemarkt 9/BC/02 1060 Vienna Austria
| | - Michael S Elsaesser
- Department of Chemistry and Physics of Materials, Paris-Lodron-University of Salzburg 5020 Salzburg Austria
| | - Alexey Cherevan
- Institute of Materials Chemistry, Division of Molecular Materials Chemistry, TU Wien Getreidemarkt 9/BC/02 1060 Vienna Austria
| | - Dominik Eder
- Institute of Materials Chemistry, Division of Molecular Materials Chemistry, TU Wien Getreidemarkt 9/BC/02 1060 Vienna Austria
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3
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Xia M, Yang P, Zhu C, Hu Y, Fang L, Zheng J, Wang X, Li Y. Highly Efficient Photoelectrochemical Detection of Cystatin C Based on a Core-Shell MOF Nanocomposite with Biomimetic-Catalysis Amplification. ACS OMEGA 2024; 9:28228-28236. [PMID: 38973831 PMCID: PMC11223130 DOI: 10.1021/acsomega.4c01644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 06/02/2024] [Accepted: 06/07/2024] [Indexed: 07/09/2024]
Abstract
Cystatin C (CysC) has been proven to be used to diagnose acute kidney injury (AKI) rapidly and sensitively early. Therefore, it is urgent to develop a sensitive, novel, and rapid method for detecting CysC. In this work, a novel photoelectrochemical (PEC) biosensor was designed for ultrasensitive CysC detection. Ti-MOF@DM-LZU1@Au as a photosensitive material was first modified on the ITO electrode surface. Then, Ab1 and CysC were assembled on the electrode via the specific immunoresponse of an antigen and antibody. Lastly, the conjugate Ab2/l-Cys bilayer/l-Cys-hemin/G-quadruplex with self-catalytic enzyme performance, as a signal amplification approach, could further react with CysC and Ab1, which resulted in a stronger photocurrent. As expected, the constructed PEC sensor realized the ultrasensitive detection of CysC, with a detection range of 10 pg/mL to 16 μg/mL and a lower limit of 8.023 pg/mL. The biosensor had excellent repeatability, selectivity, and stability. Moreover, it can provide a new method for the sensitive and rapid detection of other protein molecules in clinical practice.
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Affiliation(s)
- Mengshi Xia
- Emergency
Department, Second Affiliated Hospital of
Chongqing Medical University, Chongqing 400010, China
| | - Pan Yang
- Emergency
Department, Second Affiliated Hospital of
Chongqing Medical University, Chongqing 400010, China
| | - Chuiyu Zhu
- Department
of Clinical and Military Laboratory Medicine, College of Pharmacy
and Laboratory Medicine, Army Medical University
(Third Military Medical University), Chongqing 400038, China
| | - Yue Hu
- Emergency
Department, Second Affiliated Hospital of
Chongqing Medical University, Chongqing 400010, China
| | - Lichao Fang
- Department
of Clinical and Military Laboratory Medicine, College of Pharmacy
and Laboratory Medicine, Army Medical University
(Third Military Medical University), Chongqing 400038, China
| | - Junsong Zheng
- Department
of Clinical and Military Laboratory Medicine, College of Pharmacy
and Laboratory Medicine, Army Medical University
(Third Military Medical University), Chongqing 400038, China
| | - Xiaolong Wang
- Emergency
Department, Second Affiliated Hospital of
Chongqing Medical University, Chongqing 400010, China
| | - Yan Li
- Analytical
& Testing Center, Laboratory Construction and Equipment Management
Division, Southwest University, Chongqing 400715, China
- Department
of Clinical and Military Laboratory Medicine, College of Pharmacy
and Laboratory Medicine, Army Medical University
(Third Military Medical University), Chongqing 400038, China
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4
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Yang D, Gates BC. Analyzing Stabilities of Metal-Organic Frameworks: Correlation of Stability with Node Coordination to Linkers and Degree of Node Metal Hydrolysis. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2024; 128:8551-8559. [PMID: 38835934 PMCID: PMC11145649 DOI: 10.1021/acs.jpcc.4c02105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 04/16/2024] [Accepted: 04/19/2024] [Indexed: 06/06/2024]
Abstract
Among the important properties of metal-organic frameworks (MOFs) is stability, which may limit applications, for example, in separations and catalysis. Many MOFs consist of metal oxo cluster nodes connected by carboxylate linkers. Addressing MOF stability, we highlight connections between metal oxo cluster chemistry and MOF node chemistry, including results characterizing Keggin ions and biological clusters. MOF syntheses yield diverse metal oxo cluster node structures, with varying numbers of metal atoms (3-13) and the tendency to form chains. MOF stabilities reflect a balance between the number of node-linker connections and the degree of node hydrolysis. We summarize literature results showing how MOF stability (the temperature of decomposition in air) depends on the degree of hydrolysis/condensation of the node metals, which is correlated to their degree of substitution with linkers. We suggest that this correlation may help guide the discovery of stable new MOFs, and we foresee opportunities for progress in MOF chemistry emerging from progress in metal oxo cluster chemistry.
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Affiliation(s)
- Dong Yang
- Department of Chemical Engineering, University of California, Davis, Davis, California 95616, United States
| | - Bruce C. Gates
- Department of Chemical Engineering, University of California, Davis, Davis, California 95616, United States
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Shi C, Gomez-Mendoza M, Gómez de Oliveira E, García-Tecedor M, Barawi M, Esteban-Betegón F, Liras M, Gutiérrez-Puebla E, Monge A, de la Peña O'Shea VA, Gándara F. An anthraquinone-based bismuth-iron metal-organic framework as an efficient photoanode in photoelectrochemical cells. Chem Sci 2024; 15:6860-6866. [PMID: 38725492 PMCID: PMC11077510 DOI: 10.1039/d4sc00980k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 03/27/2024] [Indexed: 05/12/2024] Open
Abstract
Metal-organic frameworks (MOFs) are appealing candidate materials to design new photoelectrodes for use in solar energy conversion because of their modular nature and chemical versatility. However, to date there are few examples of MOFs that can be directly used as photoelectrodes, for which they must be able to afford charge separation upon light absorption, and promote the catalytic dissociation of water molecules, while maintaining structural integrity. Here, we have explored the use of the organic linker anthraquinone-2, 6-disulfonate (2, 6-AQDS) for the preparation of MOFs to be used as photoanodes. Thus, the reaction of 2, 6-AQDS with Bi(iii) or a combination of Bi(iii) and Fe(iii) resulted in two new MOFs, BiPF-10 and BiFePF-15, respectively. They display similar structural features, where the metal elements are disposed in inorganic-layer building units, which are pillared by the organic linkers by coordination bonds through the sulfonic acid groups. We show that the introduction of iron in the structure plays a crucial role for the practical use of the MOFs as a robust photoelectrode in a photoelectrochemical cell, producing as much as 1.23 mmol H2 cm-2 with the use of BiFePF-15 as photoanode. By means of time-resolved and electrochemical impedance spectroscopic studies we have been able to unravel the charge transfer mechanism, which involves the formation of a radical intermediate species, exhibiting a longer-lived lifetime by the presence of the iron-oxo clusters in BiFePF-15 to reduce the charge transfer resistance.
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Affiliation(s)
- Cai Shi
- Materials Science Institute of Madrid - Spanish National Research Council Sor Juana Inés de la Cruz, 3 28049 Madrid Spain
| | - Miguel Gomez-Mendoza
- Photoactivated Processes Unit, IMDEA Energy Institute Móstoles Technology Park, Avenida Ramón de la Sagra 3, Móstoles 28935 Madrid Spain
| | - Eloy Gómez de Oliveira
- Materials Science Institute of Madrid - Spanish National Research Council Sor Juana Inés de la Cruz, 3 28049 Madrid Spain
| | - Miguel García-Tecedor
- Photoactivated Processes Unit, IMDEA Energy Institute Móstoles Technology Park, Avenida Ramón de la Sagra 3, Móstoles 28935 Madrid Spain
| | - Mariam Barawi
- Photoactivated Processes Unit, IMDEA Energy Institute Móstoles Technology Park, Avenida Ramón de la Sagra 3, Móstoles 28935 Madrid Spain
| | - Fátima Esteban-Betegón
- Materials Science Institute of Madrid - Spanish National Research Council Sor Juana Inés de la Cruz, 3 28049 Madrid Spain
| | - Marta Liras
- Photoactivated Processes Unit, IMDEA Energy Institute Móstoles Technology Park, Avenida Ramón de la Sagra 3, Móstoles 28935 Madrid Spain
| | - Enrique Gutiérrez-Puebla
- Materials Science Institute of Madrid - Spanish National Research Council Sor Juana Inés de la Cruz, 3 28049 Madrid Spain
| | - Angeles Monge
- Materials Science Institute of Madrid - Spanish National Research Council Sor Juana Inés de la Cruz, 3 28049 Madrid Spain
| | - Víctor A de la Peña O'Shea
- Photoactivated Processes Unit, IMDEA Energy Institute Móstoles Technology Park, Avenida Ramón de la Sagra 3, Móstoles 28935 Madrid Spain
| | - Felipe Gándara
- Materials Science Institute of Madrid - Spanish National Research Council Sor Juana Inés de la Cruz, 3 28049 Madrid Spain
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Chacón-García AJ, Rojas S, Grape ES, Salles F, Willhammar T, Inge AK, Pérez Y, Horcajada P. SU-101 for the removal of pharmaceutical active compounds by the combination of adsorption/photocatalytic processes. Sci Rep 2024; 14:7882. [PMID: 38570568 PMCID: PMC10991395 DOI: 10.1038/s41598-024-58014-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 03/25/2024] [Indexed: 04/05/2024] Open
Abstract
Pharmaceutical active compounds (PhACs) are some of the most recalcitrant water pollutants causing undesired environmental and human effects. In absence of adapted decontamination technologies, there is an urgent need to develop efficient and sustainable alternatives for water remediation. Metal-organic frameworks (MOFs) have recently emerged as promising candidates for adsorbing contaminants as well as providing photoactive sites, as they possess exceptional porosity and chemical versatility. To date, the reported studies using MOFs in water remediation have been mainly focused on the removal of a single type of PhACs and rarely on the combined elimination of PhACs mixtures. Herein, the eco-friendly bismuth-based MOF, SU-101, has been originally proposed as an efficient adsorbent-photocatalyst for the elimination of a mixture of three challenging persistent PhACs, frequently detected in wastewater and surface water in ng L-1 to mg·L-1 concentrations: the antibiotic sulfamethazine (SMT), the anti-inflammatory diclofenac (DCF), and the antihypertensive atenolol (At). Adsorption experiments of the mixture revealed that SU-101 exhibited a great adsorption capacity towards At, resulting in an almost complete removal (94.1 ± 0.8% for combined adsorption) in only 5 h. Also, SU-101 demonstrated a remarkable photocatalytic activity under visible light to simultaneously degrade DCF and SMT (99.6 ± 0.4% and 89.2 ± 1.4%, respectively). In addition, MOF-contaminant interactions, the photocatalytic mechanism and degradation pathways were investigated, also assessing the toxicity of the resulting degradation products. Even further, recycling and regeneration studies were performed, demonstrating its efficient reuse for 4 consecutive cycles without further treatment, and its subsequent successful regeneration by simply washing the material with a NaCl solution.
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Affiliation(s)
- Antonio J Chacón-García
- Advanced Porous Materials Unit (APMU), IMDEA Energy Institute, 28935, Móstoles, Madrid, Spain
| | - Sara Rojas
- Advanced Porous Materials Unit (APMU), IMDEA Energy Institute, 28935, Móstoles, Madrid, Spain
- Department of Inorganic Chemistry, University of Granada, 18071, Granada, Spain
| | - Erik Svensson Grape
- Department of Chemistry and Biochemistry, Material Science Institute, University of Oregon, Eugene, OR, 97403, USA
- Department of Chemistry - Ångström Laboratory, Uppsala University, 75120, Uppsala, Sweden
| | | | - Tom Willhammar
- Department of Materials and Environmental Chemistry, Stockholm University, 106 91, Stockholm, Sweden
| | - A Ken Inge
- Department of Materials and Environmental Chemistry, Stockholm University, 106 91, Stockholm, Sweden
| | - Yolanda Pérez
- Advanced Porous Materials Unit (APMU), IMDEA Energy Institute, 28935, Móstoles, Madrid, Spain.
- COMET-NANO Group, ESCET, Universidad Rey Juan Carlos, 28933, Móstoles, Madrid, Spain.
| | - Patricia Horcajada
- Advanced Porous Materials Unit (APMU), IMDEA Energy Institute, 28935, Móstoles, Madrid, Spain.
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Fernández-Conde C, Zheng Y, Mon M, Ribera A, Leyva-Pérez A, Martí-Gastaldo C. Time-resolved control of nanoparticle integration in titanium-organic frameworks for enhanced catalytic performance. Chem Sci 2024; 15:2351-2358. [PMID: 38362416 PMCID: PMC10866334 DOI: 10.1039/d3sc04678h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 12/14/2023] [Indexed: 02/17/2024] Open
Abstract
Among the multiple applications of metal-organic frameworks (MOFs), their use as a porous platform for the support of metallic nanoparticles stands out for the possibility of integrating a good anchorage, that improves the stability of the catalyst, with the presence of a porous network that allows the diffusion of substrates and products. Here we introduce an alternative way to control the injection of Au nanoparticles at variable stages of nucleation of a titanium(iv) MOF crystal (MUV-10). This allows the analysis of the different modes of nanoparticle integration into the porous matrix as a function of the crystal formation stage and their correlation with the catalytic performance of the resulting composite. Our results reveal a direct effect of the stage at which the Au nanoparticles are integrated into MUV-10 crystals not only on their catalytic activity for the cyclotrimerization of propargyl esters and the hydrochlorination of alkynes, but also on the selectivity and recyclability of the final solid catalyst, which are far superior than those reported for the same reactions with TiO2 supports.
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Affiliation(s)
- Carmen Fernández-Conde
- Instituto de Ciencia Molecular, Universitat de València c/Catedrático José Beltrán, 2 46980 Paterna Spain carlos.martiuv.es
| | - Yongkun Zheng
- Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas Avenida de los Naranjos s/n 46022 Valencia Spain
| | - Marta Mon
- Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas Avenida de los Naranjos s/n 46022 Valencia Spain
| | - Antonio Ribera
- Departament de Química Inorgànica, Universitat de València c/Dr. Moliner, 50 46100 Burjassot Spain
| | - Antonio Leyva-Pérez
- Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas Avenida de los Naranjos s/n 46022 Valencia Spain
| | - Carlos Martí-Gastaldo
- Instituto de Ciencia Molecular, Universitat de València c/Catedrático José Beltrán, 2 46980 Paterna Spain carlos.martiuv.es
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Tang C, Li X, Hu Y, Du X, Wang S, Chen B, Wang S. Porphyrin-Based Metal-Organic Framework Materials: Design, Construction, and Application in the Field of Photocatalysis. Molecules 2024; 29:467. [PMID: 38257379 PMCID: PMC10819500 DOI: 10.3390/molecules29020467] [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: 12/30/2023] [Revised: 01/15/2024] [Accepted: 01/16/2024] [Indexed: 01/24/2024] Open
Abstract
Metal-organic frameworks (MOFs) are a novel category of porous crystalline materials with an exceptionally high surface area and adjustable pore structure. They possess a designable composition and can be easily functionalized with different units. Porphyrins with conjugated tetrapyrrole macrocyclic structures can absorb light from ultraviolet to visible light regions, and their structures and properties can be facilely regulated by altering their peripheral groups or central metal ions. Porphyrin-based MOFs constructed from porphyrin ligands and metal nodes combine the unique features of porphyrins and MOFs as well as overcoming their respective limitations. This paper reviewed the design and construction, light absorption and charge transfer pathways, and strategy for improving the photocatalytic performance of porphyrin-based MOFs, and highlighted the recent progress in the field of CO2 reduction, hydrogen evolution, organic synthesis, organic pollutant removal, and nitrogen fixation. The intrinsic relationships between the structure and the property of porphyrin-based MOFs received special attention, especially the relationships between the arrangements of porphyrin ligands and metal nods and the charge transfer mechanism. We attempted to provide more valuable information for the design and construction of advanced photocatalysts in the future. Finally, the challenges and future perspectives of the porphyrin-based MOFs are also discussed.
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Affiliation(s)
| | | | | | | | | | | | - Shengjie Wang
- College of Chemistry and Chemical Engineering, China University of Petroleum, Qingdao 266580, China; (C.T.); (X.L.); (Y.H.); (X.D.); (S.W.); (B.C.)
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9
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Kitchamsetti N, Chakra CS, De Barros ALF, Kim D. Development of MOF Based Recyclable Photocatalyst for the Removal of Different Organic Dye Pollutants. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:336. [PMID: 36678089 PMCID: PMC9861624 DOI: 10.3390/nano13020336] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/11/2023] [Accepted: 01/12/2023] [Indexed: 06/17/2023]
Abstract
The preparation of metal organic frameworks (MOFs) has come to the forefront in recent years because of their outstanding physical and chemical properties. Many MOFs such as Zn, Co, Ni, Fe, and Ag, etc., have been successfully synthesized. In this work, we followed the solvothermal assisted route to synthesize Ag-MOF (abbreviated as AMOF) nanosheets and then applied them as a photocatalyst to remove different organic pollutants, namely methyl orange (MO), crystal violet (CV), and methylene blue (MB). Chemical composition, optical properties, morphology, and microstructural analysis were analyzed using XPS, UV-visible spectrophotometer, FESEM, TEM, and EDS, respectively. The structural properties of AMOF nanosheets were studied by X-ray diffraction (XRD). Nitrogen adsorption and desorption isotherm analysis were utilized to evaluate the specific surface area and pore size of the AMOF nanosheets. Further, AMOF nanosheets showed notable photocatalytic performance for various dye pollutants degradation. The results confirmed 74.5, 85.5, and 90.7% of MO, CV, and MB dye pollutants removal after 120 min of irradiation with the rate constants (k) of 0.0123, 0.0153, and 0.0158 min-1, respectively. The effect of superoxide radicals (O2-) and photogenerated holes (h+) on the organic dye pollutants removal was investigated using radical scavenger trapping studies. Moreover, the stability study also confirmed the recyclability of the photocatalyst. Therefore, the findings of this research present a realizable method to grow AMOF photocatalyst for successful degradation of various dye pollutants.
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Affiliation(s)
- Narasimharao Kitchamsetti
- Department of Electronic Engineering, Institute for Wearable Convergence Electronics, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin 17104, Republic of Korea
- Center for Nano Science and Technology, Institute of Science and Technology, JNTU Hyderabad, Hyderabad 500090, India
| | - Chidurala Shilpa Chakra
- Center for Nano Science and Technology, Institute of Science and Technology, JNTU Hyderabad, Hyderabad 500090, India
| | - Ana Lucia Ferreira De Barros
- Laboratory of Experimental and Applied Physics, Centro Federal de Educação Tecnológica Celso Suckow da Fonseca, Av. Maracanã Campus 229, Rio de Janeiro 20271-110, Brazil
| | - Daewon Kim
- Department of Electronic Engineering, Institute for Wearable Convergence Electronics, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin 17104, Republic of Korea
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10
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Abstract
Vehicle exhaust has been acknowledged as an essential factor affecting human health due to the extensive use of cars. Its main components include volatile organic compounds (VOCs) and nitrogen oxides (NOx), which can cause acute irritation and chronic diseases, and significant research on the treatment of vehicle exhaust has received increasing attention in recent decades. Recently, photocatalytic technology has been considered a practical approach for eliminating vehicle emissions. This review highlights the crucial role of photocatalytic technology in eliminating vehicle emissions using semiconductor catalysts. A particular emphasis has been placed on various photocatalytic materials, such as TiO2-based materials, Bi-based materials, and Metal–Organic Frameworks (MOFs), and their recent advances in the performance of VOC and NOx photodegradation. In addition, the applications of photocatalytic technology for the elimination of vehicle exhaust are presented (including photocatalysts combined with pavement surfaces, making photocatalysts into architectural coatings and photoreactors), which will offer a promising strategy for photocatalytic technology to remove vehicle exhaust.
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