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Malafatti JOD, Tavares FA, Neves TR, Mascarenhas BC, Quaranta S, Paris EC. Modified Silica Nanoparticles from Rice Husk Supported on Polylactic Acid as Adsorptive Membranes for Dye Removal. Materials (Basel) 2023; 16:2429. [PMID: 36984308 PMCID: PMC10051336 DOI: 10.3390/ma16062429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 03/15/2023] [Accepted: 03/16/2023] [Indexed: 06/18/2023]
Abstract
Industrial effluents and wastewater treatment have been a mainstay of environmental preservation and remediation for the last decade. Silica nanoparticles (SiO2) obtained from rice husk (RH) are an alternative to producing low-cost adsorbent and agriculture waste recovery. One adsorption challenge is facilitating the adsorbate separation and reuse cycle from aqueous medium. Thus, the present work employs SiO2 supported on polylactic acid (PLA) nanofibers obtained by the electrospinning method for Rhodamine B (RhB) dye adsorption. The silica surface was modified with trimethylsilyl chloride (TMCS) to increase affinity towards organic compounds. As a result, the silanized surface of the silica from rice husk (RHSil) promoted an increase in dye adsorption attributed to the hydrophobic properties. The PLA fibers containing 40% SiO2 (w w-1) showed about 85-95% capacity adsorption. The pseudo-first-order kinetic model was demonstrated to be the best model for PLA:SiO2 RHSil nanocomposites, exhibiting a 1.2956 mg g-1 adsorption capacity and 0.01404 min-1 kinetic constant (k1) value. In the reuse assay, PLA:SiO2 membranes preserved their adsorption activity after three consecutive adsorption cycles, with a value superior to 60%. Therefore, PLA:SiO2 nanocomposites from agricultural waste are an alternative to "low-cost/low-end" treatments and can be used in traditional treatment systems to improve dye removal from contaminated waters.
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Affiliation(s)
| | | | - Tainara Ramos Neves
- Department of Chemistry, Federal University of São Carlos, São Carlos 13565-905, Brazil
| | | | - Simone Quaranta
- Institute for the Study of Nanostructured Materials, Italian National Research Council (ISMN–CNR), 00010 Rome, Italy
| | - Elaine Cristina Paris
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentação, São Carlos 13560-970, Brazil
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Moreira AJ, Malafatti JOD, Sciena CR, Paris EC. Elucidation of the atrazine degradation intermediates and dependence on the physicochemical properties of the niobium pentoxide nanostructures. Res Chem Intermed 2023. [DOI: 10.1007/s11164-023-04989-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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Liane Ücker C, San Martins Rodrigues F, de Gouveia Cantoneiro R, Goetzke V, Ceretta Moreira E, Meneghetti Ferrer M, Wienke Raubach C, Cava S. The superior photocatalytic performance of loofah sponges impregnated with Nb2O5. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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Ücker CL, Goetzke V, Riemke FC, Oliveira ME, Carreno NLV, Morisso FDP, Teodoro MD, Mastelaro VR, Moreira ML, Raubach CW, Cava SDS. The photocatalytic performance of Fe inserted in Nb2O5 obtained by microwave-assisted hydrothermal synthesis: Factorial design of experiments. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Akash S, Sivaprakash B, Rajamohan N, Pandiyan CM, Vo DVN. Pesticide pollutants in the environment - A critical review on remediation techniques, mechanism and toxicological impact. Chemosphere 2022; 301:134754. [PMID: 35490750 DOI: 10.1016/j.chemosphere.2022.134754] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/16/2022] [Accepted: 04/24/2022] [Indexed: 05/28/2023]
Abstract
The excessive and unorganised utilisation of pesticides have posed negative impacts on soil and water at higher levels. Pesticides are a major class of persistent organic compounds with high resistance to natural biodegradation and enhanced tendency to bio accumulate. The severe health hazards imposed on the living organisms hinder the ecosystem and lead to chronic and irreversible health issues. Photocatalytic method is reported as a potential alternative with a variety of techniques and materials that are safer, easier, durable, cost-effective and efficient. Nanomaterials play a key role in this domain due to their versatility. In particular, nanostructured materials of organized shapes and morphological properties have gained enormous attention in research and real-time applications. Specifically, nanomaterials like nanotubes, nanorods and nanowires have unique properties and anisotropic structure that make them more suitable for treating pesticide wastes with photocatalysis. Variety of tuning methods and materials are emerging to enhance the activity of titanium and zinc based nanocatalysts in remediation methods. In the present article, four pesticides, namely, atrazine, chlorpyrifos, paraquat and naphthalene are chosen due to their common occurrence and usage in agricultural applications. These pesticides are highly toxic and need special attention to explore appropriate remediation methods. The report also details the latest innovations reported by several research studies in exploring the potential of specially synthesised nanoparticles for photocatalytic removal of pesticide pollutants from environment. For zinc-based hybrid nanomaterials, the maximum disintegration reported were 99%, 98%, 73.3% and 92.3% for atrazine, chlorpyrifos, paraquat and naphthalene, respectively.
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Affiliation(s)
- S Akash
- Department of Chemical Engineering, Annamalai University, Annamalai Nagar PC-608002, India
| | - Baskaran Sivaprakash
- Department of Chemical Engineering, Annamalai University, Annamalai Nagar PC-608002, India
| | - Natarajan Rajamohan
- Chemical Engineering Section, Faculty of Engineering, Sohar University, Sohar, PC-311, Oman.
| | - C Muruga Pandiyan
- Department of Chemical Engineering, Annamalai University, Annamalai Nagar PC-608002, India
| | - Dai-Viet N Vo
- Institute of Environmental Sciences, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam; School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus, 14300, Nibong Tebal, Penang, Malaysia
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Paris EC, Malafatti JOD, Moreira AJ, Santos LC, Sciena CR, Zenatti A, Escote MT, Mastelaro VR, Joya MR. CuO nanoparticles decorated on hydroxyapatite/ferrite magnetic support: photocatalysis, cytotoxicity, and antimicrobial response. Environ Sci Pollut Res Int 2022; 29:41505-41519. [PMID: 35088254 DOI: 10.1007/s11356-021-18263-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 12/17/2021] [Indexed: 06/14/2023]
Abstract
Photocatalysts supported in magnetic nanocomposites for application in environmental remediation processes have been evaluated for removing contaminants due to easy recovery and low toxicity to the ecosystem. In this work, copper oxide (CuO) nanoparticles with photocatalytic properties were decorated on magnetic support constituted by hydroxyapatite (HAP) and ferrite to achieve efficiency in contaminated water remediation under visible light irradiation. First, nanomaterials were obtained by precipitation route, allowing fast and straightforward synthesis. Then, CuO nanoparticles with 6 nm diameter were efficiently decorated on magnetic support (25 nm), showing a high ability to absorb visible light irradiation (bandgap) to promote electronic transition and charge separation. Under visible irradiation, CuO promotes the H2O2 reduction in the conduction band (BC) to form hydroxyl radicals (•OH), which are responsible for rhodamine B (RhB) dye degradation (> 90% in 60 min). Magnetic hysteresis assays confirmed the magnetic properties of HAP/ferrite support, which enabled the recovery and reuse of the magnetic photocatalyst efficiently up to 3 cycles. Due to low Cu2+ leaching after the photocatalytic application stage, cytotoxicity assay for the Allium cepa seeds did not exhibit abnormal cells other than those commonly found. Furthermore, the CuO-decorated nanoparticles showed bactericidal activity against S. aureus (Gram-positive) and E. coli (Gram-negative) microorganisms, being more significant for the first one. Thus, the developed nanocomposite of CuO nanoparticles decorated on the magnetic support surface showed to be a complete system for water remediation, acting in contaminant degradation under visible light irradiation and bactericidal control with environmentally friendly characteristics.Graphical abstract CuO nanoparticles decorated on hydroxyapatite/ferrite magnetic support acting as a photocatalytic and bactericidal system.
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Affiliation(s)
- Elaine Cristina Paris
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentação, XV de Novembro St., 1452, São Carlos, SP, 13560-970, Brazil.
| | - João Otávio Donizette Malafatti
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentação, XV de Novembro St., 1452, São Carlos, SP, 13560-970, Brazil
- Department of Chemistry, Federal University of São Carlos, Rod. Washington Luiz, km 235, zip code: 13565-905, São Carlos, SP, Brazil
| | - Ailton José Moreira
- Department of Chemistry, Federal University of São Carlos, Rod. Washington Luiz, km 235, zip code: 13565-905, São Carlos, SP, Brazil
| | - Lílian Cruz Santos
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentação, XV de Novembro St., 1452, São Carlos, SP, 13560-970, Brazil
- Department of Chemistry, Federal University of São Carlos, Rod. Washington Luiz, km 235, zip code: 13565-905, São Carlos, SP, Brazil
| | - Camila Rodrigues Sciena
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentação, XV de Novembro St., 1452, São Carlos, SP, 13560-970, Brazil
- Department of Chemistry, Federal University of São Carlos, Rod. Washington Luiz, km 235, zip code: 13565-905, São Carlos, SP, Brazil
| | - Alessandra Zenatti
- Center for Engineering, Modeling, and Applied Social Sciences, Federal University of ABC, Avenida dos Estados, 5001, Santo André, SP, 09210-580, Brazil
| | - Márcia Tsuyama Escote
- Center for Engineering, Modeling, and Applied Social Sciences, Federal University of ABC, Avenida dos Estados, 5001, Santo André, SP, 09210-580, Brazil
| | | | - Miryam Rincón Joya
- Departamento de Física, Facultad de Ciencias, Universidad Nacional de Colombia-Bogota, Carrera 30 Calle 45-03, 111321, Bogota, Colombia
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Brito SDC, Malafatti JOD, Arab FE, Bresolin JD, Paris EC, de Souza CWO, Ferreira MD. One-pot synthesis of CuO, ZnO, and Ag nanoparticles: structural, morphological, and bactericidal evaluation. INORG NANO-MET CHEM 2022. [DOI: 10.1080/24701556.2022.2078358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Sabrina da Costa Brito
- Department of Food and Nutrition, São Paulo State University “Julio de Mesquita Filho”, Araraquara, Brazil
- Embrapa Instrumentação, São Carlos, Brazil
| | | | - Fernanda Elisa Arab
- Embrapa Instrumentação, São Carlos, Brazil
- Department of Biotecnology, PPGBiotec Federal University of São Carlos, São Carlos, Brazil
| | | | | | - Clovis Wesley Oliveira de Souza
- Department of Biotecnology, PPGBiotec Federal University of São Carlos, São Carlos, Brazil
- Department of Morphology and Pathology, Federal University of São Carlos, São Carlos, Brazil
| | - Marcos David Ferreira
- Embrapa Instrumentação, São Carlos, Brazil
- Department of Biotecnology, PPGBiotec Federal University of São Carlos, São Carlos, Brazil
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Moreira AJ, Lemos SG, Coelho D, Mascaro LH, Freschi GPG, Pereira EC. UV-Vis spectrophotometry coupled to chemometric analysis for the performance evaluation of atrazine photolysis and photocatalysis. Environ Sci Pollut Res Int 2022; 29:24010-24023. [PMID: 34820752 DOI: 10.1007/s11356-021-17687-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 11/18/2021] [Indexed: 06/13/2023]
Abstract
In this study, a spectrophotometric-chemometric (Spec-Chem) approach was applied as an alternative to chromatography to monitor ATZ and by-products after photolytic and photocatalytic oxidation aiming to unveil the ATZ degradation mechanism. Spec-Chem is an accessible, easy-to-operate, low-cost analytical approach to monitor atrazine (ATZ) and by-products, and its applicability was validated by HPLC, the reference technique for the evaluation of pollutant degradation mechanisms. The chromatographic (DChro) and spectrophotometric (DSpec) data found 95% and 57% ATZ removal after 30 min, respectively, proving that the DSpec erroneously induces a 38% loss in removal efficiency. When DSpec was treated by multivariate curve resolution (MCR) analysis for providing chemometric data (DChem), it found ATZ removal and hydroxyatrazine (HAT) formation statistically equal to DChro (t-test, p = 0.05). After unraveling the ATZ degradation mechanism using Spec-Chem, a new hypothesis for the kinetic calculation of ATZ degradation was presented, where the concentrations of ATZ and HAT were used to find k and R2 values representative for the ATZ degradation mechanism. The values found for k were compatible with the literature under similar conditions of ATZ degradation, and the linear correlation coefficients (R2 = 0.99) showed an optimal fit for the proposed hypothesis. Thus, Spec-Chem was successfully applied to unravel the mechanism of photocatalytic degradation of ATZ in the presence of TiO2, while k was obtained by the new hypothesis proposed that considered ATZ and HAT concentration as parameters of kinetic interest. Therefore, the importance of monitoring quantitatively ATZ and HAT were provided in this study, providing new information for the scientific community.
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Affiliation(s)
- Ailton J Moreira
- Chemistry Department, Universidade Federal de São Carlos, São Carlos, SP, Brazil.
- Universidade Federal de Alfenas, Campus Poços de Caldas, Poços de Caldas, MG, Brazil.
| | - Sherlan G Lemos
- Department of Chemistry, Federal University of Paraíba, João Pessoa, PB, Brazil
| | - Dyovani Coelho
- Chemistry Department, Universidade Federal de São Carlos, São Carlos, SP, Brazil
| | - Lucia H Mascaro
- Chemistry Department, Universidade Federal de São Carlos, São Carlos, SP, Brazil
| | - Gian P G Freschi
- Universidade Federal de Alfenas, Campus Poços de Caldas, Poços de Caldas, MG, Brazil
| | - Ernesto C Pereira
- Chemistry Department, Universidade Federal de São Carlos, São Carlos, SP, Brazil
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de Jesus ET, Moreira AJ, Sá MC, Freschi GPG, Joya MR, Li MS, Paris EC. Potential of Nb 2O 5 nanofibers in photocatalytic degradation of organic pollutants. Environ Sci Pollut Res Int 2021; 28:69401-69415. [PMID: 34302247 DOI: 10.1007/s11356-021-15435-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 07/09/2021] [Indexed: 06/13/2023]
Abstract
Various photocatalytic nanomaterials for environmental remediation have been promoted due to the pollution caused by different organic pollutants. In this study, Nb2O5 nanofibers were obtained by electrospinning technique, presenting controlled crystallinity and high specific surface area to improve the photoactivity response. The structural characterization indicated Nb2O5 nanofibers with orthorhombic phase formation. The photoluminescence measurements showed different energy levels contributing to the electronic transition events. The nanofibers with a bandgap up to 3.6 eV were applied to photocatalysis of dyes (rhodamine B (RhB) or methylene blue (MB)) and fluoxetine (FLX), listed as an emergent pollutant. In the optimized condition (pH = 9), the RhB and MB photocatalysis was 59% and 93% more efficient than photolysis due to ζ = - 50 mV ± 5 for EtOH_550 sample increased interaction with MB (cationic) compared to RhB unprotonated (pKa = 3.7). Therefore, FLX (pKa = 10.7) was selected due to protonated form at pH = 9 and showed 68% ± 1 adsorption in 30 min for EtOH_550. The FLX photocatalytic degradation under UV light irradiation was up to 17% higher than the photolytic degradation. The formation of hydroxyl radicals in the photocatalytic system (EtOH_550) was proven by the Coumarine probe assay, corroborating with the greater amount of α-[2-(methylamino)ethyl]benzylalcohol (MAEB), a by-product obtained after FLX oxidation. Additionally, the material achieved specific catalytic activity for the different organic compounds (RhB, MB, or FLX). Therefore, Nb2O5 nanofibers were efficient for degrading three different pollutants under UV light, proving a viable alternative for environmental remediation.
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Affiliation(s)
- Edson Tobias de Jesus
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentação, XV de Novembro St., 1452, zip code, São Carlos, SP, 13560-970, Brazil
- Department of Chemistry, Federal University of São Carlos, Rod. Washington Luiz, km 235, zip code, São Carlos, SP, 13565-905, Brazil
- Federal Institute of Education, Science and Technology of Maranhão, Baronesa street, zip code, Alcântara, MA, 65250-000, Brazil
| | - Ailton José Moreira
- Department of Chemistry, Federal University of São Carlos, Rod. Washington Luiz, km 235, zip code, São Carlos, SP, 13565-905, Brazil
- LAFFEQ, Institute of Science and Technology, Federal University of Alfenas, UNIFAL-MG, Poços de Caldas, MG, 37715-400, Brazil
| | - Mayara Coelho Sá
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentação, XV de Novembro St., 1452, zip code, São Carlos, SP, 13560-970, Brazil
- Department of Chemistry, Federal University of São Carlos, Rod. Washington Luiz, km 235, zip code, São Carlos, SP, 13565-905, Brazil
- Federal Institute of Education, Science and Technology of Maranhão, Baronesa street, zip code, Alcântara, MA, 65250-000, Brazil
| | - Gian Paulo Giovanni Freschi
- LAFFEQ, Institute of Science and Technology, Federal University of Alfenas, UNIFAL-MG, Poços de Caldas, MG, 37715-400, Brazil
| | - Miryam Rincón Joya
- Departamento de Física, Universidad Nacional de Colombia, Calle 45 #30-03, Bogotá, C.P. 111321, Colombia
| | - Maximo Siu Li
- Institute of Physics, University of São Paulo, São Carlos, SP, 13563-120, Brazil
| | - Elaine Cristina Paris
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentação, XV de Novembro St., 1452, zip code, São Carlos, SP, 13560-970, Brazil.
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Prado ACF, Malafatti JOD, Oliveira JA, Ribeiro C, Joya MR, Luz AP, Paris EC. Preparation and Application of Nb 2O 5 Nanofibers in CO 2 Photoconversion. Nanomaterials (Basel) 2021; 11:3268. [PMID: 34947617 DOI: 10.3390/nano11123268] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 11/25/2021] [Accepted: 11/27/2021] [Indexed: 11/17/2022]
Abstract
Increasing global warming due to NOx, CO2, and CH4, is significantly harming ecosystems and life worldwide. One promising methodology is converting pollutants into valuable chemicals via photocatalytic processes (by reusable photocatalysts). In this context, the present work aimed to produce a Nb2O5 photocatalyst nanofiber system by electrospinning to convert CO2. Based on the collected data, the calcination at 600 ∘C for 2 h resulted in the best condition to obtain nanofibers with homogeneous surfaces and an average diameter of 84 nm. As a result, the Nb2O5 nanofibers converted CO2 mostly into CO and CH4, reaching values around 8.5 μmol g−1 and 0.55 μmol g−1, respectively.
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Spanos A, Athanasiou K, Ioannou A, Fotopoulos V, Krasia-Christoforou T. Functionalized Magnetic Nanomaterials in Agricultural Applications. Nanomaterials (Basel) 2021; 11:3106. [PMID: 34835870 PMCID: PMC8623625 DOI: 10.3390/nano11113106] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/03/2021] [Accepted: 11/16/2021] [Indexed: 12/23/2022]
Abstract
The development of functional nanomaterials exhibiting cost-effectiveness, biocompatibility and biodegradability in the form of nanoadditives, nanofertilizers, nanosensors, nanopesticides and herbicides, etc., has attracted considerable attention in the field of agriculture. Such nanomaterials have demonstrated the ability to increase crop production, enable the efficient and targeted delivery of agrochemicals and nutrients, enhance plant resistance to various stress factors and act as nanosensors for the detection of various pollutants, plant diseases and insufficient plant nutrition. Among others, functional magnetic nanomaterials based on iron, iron oxide, cobalt, cobalt and nickel ferrite nanoparticles, etc., are currently being investigated in agricultural applications due to their unique and tunable magnetic properties, the existing versatility with regard to their (bio)functionalization, and in some cases, their inherent ability to increase crop yield. This review article provides an up-to-date appraisal of functionalized magnetic nanomaterials being explored in the agricultural sector.
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Affiliation(s)
- Alexandros Spanos
- Department of Agricultural Sciences, Biotechnology & Food Science, Cyprus University of Technology, Limassol 3036, Cyprus; (A.S.); (A.I.); (V.F.)
| | - Kyriakos Athanasiou
- Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia 2109, Cyprus;
| | - Andreas Ioannou
- Department of Agricultural Sciences, Biotechnology & Food Science, Cyprus University of Technology, Limassol 3036, Cyprus; (A.S.); (A.I.); (V.F.)
| | - Vasileios Fotopoulos
- Department of Agricultural Sciences, Biotechnology & Food Science, Cyprus University of Technology, Limassol 3036, Cyprus; (A.S.); (A.I.); (V.F.)
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