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Ceballos-Sanchez O, Navarro-López DE, Mejía-Méndez JL, Sanchez-Ante G, Rodríguez-González V, Sánchez-López AL, Sanchez-Martinez A, Duron-Torres SM, Juarez-Moreno K, Tiwari N, López-Mena ER. Enhancing antioxidant properties of CeO 2 nanoparticles with Nd 3+ doping: structural, biological, and machine learning insights. Biomater Sci 2024; 12:2108-2120. [PMID: 38450552 DOI: 10.1039/d3bm02107f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
The antioxidant capabilities of nanoparticles are contingent upon various factors, including their shape, size, and chemical composition. Herein, novel Nd-doped CeO2 nanoparticles were synthesized and the neodymium content was varied to investigate the synergistic impact on the antioxidant properties of CeO2 nanoparticles. Incorporating Nd3+ induced changes in lattice parameters and significantly altered the morphology from nanoparticles to nanorods. The biological activity of Nd-doped CeO2 was examined against pathogenic bacterial strains, breast cancer cell lines, and antioxidant models. The antibacterial and anticancer activities of nanoparticles were not observed, which could be associated with the Ce3+/Ce4+ ratio. Notably, the incorporation of neodymium improved the antioxidant capacity of CeO2. Machine learning techniques were employed to forecast the antioxidant activity to enhance understanding and predictive capabilities. Among these models, the random forest model exhibited the highest accuracy at 96.35%, establishing it as a robust computational tool for elucidating the biological behavior of Nd-doped CeO2 nanoparticles. This study presents the first exploration of the influence of Nd3+ on the structural, optical, and biological attributes of CeO2, contributing valuable insights and extending the application of machine learning in predicting the therapeutic efficacy of inorganic nanomaterials.
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Affiliation(s)
- Oscar Ceballos-Sanchez
- Universidad de Guadalajara, Centro Universitario de Ciencias Exactas e Ingenierias (CUCEI), Departamento de Ingenieria de Proyectos, Av. José Guadalupe Zuno # 48, Industrial Los Belenes, Zapopan, Jalisco, 45157, Mexico.
| | - Diego E Navarro-López
- Tecnologico de Monterrey, Escuela de ingeniería y Ciencias, Av. Gral. Ramón Corona No 2514, Colonia Nuevo México, Zapopan, Jalisco, 45121, Mexico
| | - Jorge L Mejía-Méndez
- Departamento de Ciencias Químico-Biológicas, Universidad de las Américas Puebla, Santa Catarina Mártir s/n, 72810 Cholula, Puebla, Mexico
| | - Gildardo Sanchez-Ante
- Tecnologico de Monterrey, Escuela de ingeniería y Ciencias, Av. Gral. Ramón Corona No 2514, Colonia Nuevo México, Zapopan, Jalisco, 45121, Mexico
| | - Vicente Rodríguez-González
- División de Materiales Avanzados, IPICYT, Instituto Potosino de Investigación Científica y Tecnológica, San Luis Potosí, S.L.P., Mexico
| | - Angélica Lizeth Sánchez-López
- Tecnologico de Monterrey, Escuela de ingeniería y Ciencias, Av. Gral. Ramón Corona No 2514, Colonia Nuevo México, Zapopan, Jalisco, 45121, Mexico
| | - Araceli Sanchez-Martinez
- Universidad de Guadalajara, Centro Universitario de Ciencias Exactas e Ingenierias (CUCEI), Departamento de Ingenieria de Proyectos, Av. José Guadalupe Zuno # 48, Industrial Los Belenes, Zapopan, Jalisco, 45157, Mexico.
| | - Sergio M Duron-Torres
- Unidad Académica de Ciencias Químicas, Universidad Autónoma de Zacatecas, Campus Siglo XXI, Carretera Zacatecas, Guadalajara Km 6, Ejido La Escondida, 98160, Zacatecas, Mexico
| | - Karla Juarez-Moreno
- Centro de Física Aplicada y Tecnología Avanzada (CFATA), Universidad Nacional Autónoma de México (UNAM), Querétaro, QRO 76230, Mexico
| | - Naveen Tiwari
- Centro Singular de Investigación en Química Biológica y Materiales Moleculares (CIQUS), C/Jenaro de la Fuente s/n, Campus Vida, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Edgar R López-Mena
- Tecnologico de Monterrey, Escuela de ingeniería y Ciencias, Av. Gral. Ramón Corona No 2514, Colonia Nuevo México, Zapopan, Jalisco, 45121, Mexico
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Navarro-López DE, Perfecto-Avalos Y, Zavala A, de Luna MA, Sanchez-Martinez A, Ceballos-Sanchez O, Tiwari N, López-Mena ER, Sanchez-Ante G. Unraveling the Complex Interactions: Machine Learning Approaches to Predict Bacterial Survival against ZnO and Lanthanum-Doped ZnO Nanoparticles. Antibiotics (Basel) 2024; 13:220. [PMID: 38534655 DOI: 10.3390/antibiotics13030220] [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: 01/23/2024] [Revised: 02/22/2024] [Accepted: 02/26/2024] [Indexed: 03/28/2024] Open
Abstract
The rise in antibiotic-resistant bacteria is a global health challenge. Due to their unique properties, metal oxide nanoparticles show promise in addressing this issue. However, optimizing these properties requires a deep understanding of complex interactions. This study incorporated data-driven machine learning to predict bacterial survival against lanthanum-doped ZnO nanoparticles. The effect of incorporation of lanthanum ions on ZnO was analyzed. Even with high lanthanum concentration, no significant variations in structural, morphological, and optical properties were observed. The antibacterial activity of La-doped ZnO nanoparticles against Gram-positive and Gram-negative bacteria was qualitatively and quantitatively evaluated. Nanoparticles induce 60%, 95%, and 55% bacterial death against Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus, respectively. Algorithms such as Multilayer Perceptron, K-Nearest Neighbors, Gradient Boosting, and Extremely Random Trees were used to predict the bacterial survival percentage. Extremely Random Trees performed the best among these models with 95.08% accuracy. A feature relevance analysis extracted the most significant attributes to predict the bacterial survival percentage. Lanthanum content and particle size were irrelevant, despite what can be assumed. This approach offers a promising avenue for developing effective and tailored strategies to reduce the time and cost of developing antimicrobial nanoparticles.
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Affiliation(s)
- Diego E Navarro-López
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Av. Gral Ramón Corona No. 2514, Colonia Nuevo México, Zapopan 45121, Jalisco, Mexico
| | - Yocanxóchitl Perfecto-Avalos
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Av. Gral Ramón Corona No. 2514, Colonia Nuevo México, Zapopan 45121, Jalisco, Mexico
| | - Araceli Zavala
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Av. Gral Ramón Corona No. 2514, Colonia Nuevo México, Zapopan 45121, Jalisco, Mexico
| | - Marco A de Luna
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Av. Gral Ramón Corona No. 2514, Colonia Nuevo México, Zapopan 45121, Jalisco, Mexico
| | - Araceli Sanchez-Martinez
- Departamento de Ingenieria de Proyectos, Centro Universitario de Ciencias Exactas e Ingenierias (CUCEI), Universidad de Guadalajara, Av. José Guadalupe Zuno # 48, Industrial Los Belenes, Zapopan 45157, Jalisco, Mexico
| | - Oscar Ceballos-Sanchez
- Departamento de Ingenieria de Proyectos, Centro Universitario de Ciencias Exactas e Ingenierias (CUCEI), Universidad de Guadalajara, Av. José Guadalupe Zuno # 48, Industrial Los Belenes, Zapopan 45157, Jalisco, Mexico
| | - Naveen Tiwari
- Center for Research in Biological Chemistry and Molecular Materials (CiQUS), University of Santiago de Compostela, Rúa Jenaro de La Fuente S/N, 15782 Santiago de Compostela, Spain
| | - Edgar R López-Mena
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Av. Gral Ramón Corona No. 2514, Colonia Nuevo México, Zapopan 45121, Jalisco, Mexico
| | - Gildardo Sanchez-Ante
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Av. Gral Ramón Corona No. 2514, Colonia Nuevo México, Zapopan 45121, Jalisco, Mexico
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Silambarasan R, Sai Sundar Perisetti US, Pavalamalar S, Anbalagan K. Enhanced efficiency of photocatalytically synthesised Co 3+/Co 2+-incorporated CeO 2/SnO 2 nanocomposite and supercapacitor studies. RSC Adv 2024; 14:4153-4164. [PMID: 38292258 PMCID: PMC10826469 DOI: 10.1039/d3ra07947c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 12/18/2023] [Indexed: 02/01/2024] Open
Abstract
The photochemical reduction approach, distilled H2O with PriOH as the solvent medium, was used to create and characterise the conversion of Co3+ to Co2+ integrated on CeO2/SnO2. The PXRD, IR, SEM, HR-TEM, VSM, and XPS results show that the materials generated have appropriate crystallisation form and retain the hollow spherical structure of Co-CeO2/SnO2. The performance of several UV-light energetic photocatalysts and the reaction pathways for inorganic complex degradation are addressed, emphasising the main elements contributing to their mineralisation. Reaction mechanisms, identification and quantification of degradation intermediates, and effects of reactive active species were described and analysed for each modelled target inorganic pollutant category. The ternary (Co3+/Co2+)/CeO2/SnO2 materials were hypothesised to improve the photocatalytic activity by increasing the transport rate of eCB- impurities as a result of accelerating the practical separation of electron-hole (e-/h+) pairs. Then, it exhibits high cycling stability by successfully reducing the pulverisation of Co-CeO2/SnO2 electrode materials due to volume expansion and a high specific capacity of 827 F g-1(1 A g-1) while maintaining a high current density of 5 A g-1. GCD and impedance spectroscopy studies were also carried out to analyse charge-discharge cycles and sample stability. This exceptional electrochemical performance suggests that Co-CeO2/SnO2 are promising for high-performance energy storage systems.
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Affiliation(s)
- R Silambarasan
- Department of Chemistry, Pondicherry University Pondicherry 605014 India +91 413 2654509
| | | | - S Pavalamalar
- Department of Chemistry, Pondicherry University Pondicherry 605014 India +91 413 2654509
| | - K Anbalagan
- Department of Chemistry, Pondicherry University Pondicherry 605014 India +91 413 2654509
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Marsius AG, Hidayat S, Adhika DR, Mustofa AZE, Suendo V, Rachmawati H. Effect of Ag and Ni-Doped Cerium Oxide Nanoparticles on the Formation of ROS and Evaluation as an Alternative Physical Sunscreen Material. Chem Pharm Bull (Tokyo) 2024; 72:220-225. [PMID: 38382975 DOI: 10.1248/cpb.c23-00512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
CeO2 nanoparticles (nanoceria) were proposed as an alternative physical sunscreen agent with antioxidant properties and comparable UV absorption performance. Green synthesis of nanoceria with Ag and Ni dopants resulted in doped nanoceria with lower catalytic activity and biologically-safe characteristics. The doped nanoceria was characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), Rancimat Instrument, and UV-Vis Spectrophotometer for SPF (Sun Protection Factor) determination. XRD and TEM analysis showed that nanoceria had been successfully formed in nanoscale-sized with a change in crystallite size due to the crystal defect phenomenon caused by dopant addition. While the Rancimat test and band gap energy analysis were conducted to evaluate the oxidative stability and reactive oxygen species formation, it was confirmed that dopant addition could decrease catalytic activity of material, resulting in Ni-doped Ce with a longer incubation time (11.81 h) than Ag-doped Ce (10.58 h) and non-doped Ce (10.30 h). In-vitro SPF value was measured using the thin layer technique of sunscreen prototype with Virgin Coconut Oil (VCO)-based emulsion, which yielded 10.862 and 5.728 SPF values for 10% Ag-doped Ce and 10% Ni-doped Ce, respectively. The dopant addition of nanoceria could reduce catalytic activity and give a decent in vitro UV-shielding performance test; thus, Ag and Ni-doped nanoceria could be seen as promising candidates for alternative physical sunscreen agents.
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Affiliation(s)
| | | | - Damar Rastri Adhika
- Advanced Functional Materials Research Group, Engineering Physics, Faculty of Industrial Technology, Institut Teknologi Bandung
- Research Center for Nanoscience and Nanotechnology, Institut Teknologi Bandung
| | - Akhmad Zein Eko Mustofa
- Graduate School, Institut Teknologi Bandung
- Research Center for Nanoscience and Nanotechnology, Institut Teknologi Bandung
| | - Veinardi Suendo
- Research Center for Nanoscience and Nanotechnology, Institut Teknologi Bandung
- Inorganic and Physical Chemistry Research Divison, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung
| | - Heni Rachmawati
- Research Center for Nanoscience and Nanotechnology, Institut Teknologi Bandung
- Pharmaceutics Research Group, School of Pharmacy, Institut Teknologi Bandung
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5
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Jin Lee D, Mohan Kumar G, Sekar S, Chang Jeon H, Young Kim D, Ilanchezhiyan P. Ultrasonic processing of WO 3 nanosheets integrated Ti 3C 2 MXene 2D-2D based heterojunctions with synergistic effects for enhanced water splitting and environmental remediation. ULTRASONICS SONOCHEMISTRY 2023; 101:106681. [PMID: 37952468 PMCID: PMC10665665 DOI: 10.1016/j.ultsonch.2023.106681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 11/02/2023] [Accepted: 11/04/2023] [Indexed: 11/14/2023]
Abstract
This article describes a straightforward chemical procedure that involves hydrothermal and ultrasonic treatments to create a new 2D/2D ultrathin WO3/Ti3C2 heterojunctions. The features of the fabricated heterojunctions were characterized and examined by field emission electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), optical absorption spectroscopy (UV-Vis). By photodegrading an organic dye under the influence of visible light, the photocatalytic degradation capabilities of the heterojunctions were also investigated. The performance of WO3/Ti3C2 was superior to that of bare WO3, with a removal rate of 94% and a kinetic rate constant (k) that was approximately 3 times that of WO3. The creation of 2D/2D heterojunction was observed to encourage the spatial charge separation and increase the surface reactive sites, to result with the increased photocatalytic activity in WO3/Ti3C2 heterojunction. The photocurrent values discovered through photoelectrochemical studies further indicated Ti3C2's active function in enhancing water-splitting performance. The impedance analysis examined by an electrochemical method revealed that heterojunctions might be helpful in accelerating the migration of charges quickly to get the outcomes seen.
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Affiliation(s)
- Dong Jin Lee
- Quantum-Functional Semiconductor Research Center (QSRC), Institute of Future Technology, Dongguk University, Jung-gu, Seoul 04620, South Korea
| | - Ganesan Mohan Kumar
- Quantum-Functional Semiconductor Research Center (QSRC), Institute of Future Technology, Dongguk University, Jung-gu, Seoul 04620, South Korea
| | - Sankar Sekar
- Quantum-Functional Semiconductor Research Center (QSRC), Institute of Future Technology, Dongguk University, Jung-gu, Seoul 04620, South Korea
| | - Hee Chang Jeon
- Quantum-Functional Semiconductor Research Center (QSRC), Institute of Future Technology, Dongguk University, Jung-gu, Seoul 04620, South Korea
| | - Deuk Young Kim
- Quantum-Functional Semiconductor Research Center (QSRC), Institute of Future Technology, Dongguk University, Jung-gu, Seoul 04620, South Korea; Division of Physics and Semiconductor Science, Dongguk University, Seoul, Republic of Korea
| | - Pugazhendi Ilanchezhiyan
- Quantum-Functional Semiconductor Research Center (QSRC), Institute of Future Technology, Dongguk University, Jung-gu, Seoul 04620, South Korea.
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Chahal S, Phor L, Kumar A, Kumar S, Kumar S, Kumar R, Kumar P. Enhanced photocatalytic degradation of organic dye by CeO 2/CNT/GO hybrid nanocomposites under UV light for wastewater treatment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:124964-124975. [PMID: 36867333 DOI: 10.1007/s11356-023-26184-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 02/24/2023] [Indexed: 12/30/2023]
Abstract
Development of nanocomposites as efficient photocatalysts for the removal of hazardous organic pollutants is always in dire demand due to increase in water pollution. In this article, a facile sol-gel method has been used to synthesize cerium oxide (CeO2) nanoparticles followed by their decoration over multi-walled carbon nanotubes (CNTs) and graphene oxide (GO) to construct binary as well ternary hybrid nanocomposites using ultrasonic treatment. The oxygen vacancy defects have been depicted using X-ray photoelectron spectroscopy (XPS) that may result into improved photocatalytic efficiency. The ternary hybrid nanocomposites (CeO2/CNT/GO) showed excellent photocatalytic efficiency towards degradation of rose bengal (RB) dye up to 96.9% in 50 min. CNTs and GO provide the interfacial charge transfer which inhibits the electron-hole pair recombination. The results obtained here indicate that these composites can be effectively utilized as promising materials for the degradation of harmful organic pollutants for wastewater treatment.
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Affiliation(s)
- Surjeet Chahal
- Materials and Nano Engineering Research Laboratory, Dept. of Physics, School of Physical Sciences, DIT University, Dehradun, 248009, India
- Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Haryana, 131039, India
| | - Lakshita Phor
- Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Haryana, 131039, India
| | - Ashok Kumar
- Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Haryana, 131039, India
| | - Suresh Kumar
- Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Haryana, 131039, India
| | - Sandeep Kumar
- J.C. Bose University of Science and Technology, YMCA, Faridabad, Haryana, 121006, India
| | - Ravi Kumar
- J.C. Bose University of Science and Technology, YMCA, Faridabad, Haryana, 121006, India
| | - Parmod Kumar
- J.C. Bose University of Science and Technology, YMCA, Faridabad, Haryana, 121006, India.
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Melinte V, Culica ME, Chibac-Scutaru AL. Cellulose acetate/polyurethane blend as support matrix with high optical transparency and improved mechanical properties for photocatalyst CeO 2 nanoparticles immobilization. Int J Biol Macromol 2023; 251:126210. [PMID: 37579894 DOI: 10.1016/j.ijbiomac.2023.126210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 07/03/2023] [Accepted: 08/05/2023] [Indexed: 08/16/2023]
Abstract
Advanced manufacturing technologies for efficient catalytic materials have triggered the rational design of catalysts as well as extensive investigation into preparative methodologies. Herein, we report the preparation of new versatile cellulose acetate/polyurethane (CA/PU) blends for efficient immobilization of CeO2 nanoparticles, the appropriate composition of polymer mixture being chosen after rigorous analysis (SEM, FTIR, optical, mechanical). The band gap energy for hybrid films ranged between 3.02 eV and 2.05 eV, the lowest value being measured for the film with Co-doped CeO2 NPs (B3 film). The best results in photodegradation of methylene blue under visible-light irradiation was attained after 50 min for B3 film (rate constant k = 45.34× 10-3 min-1), while the total mineralization of MB in the same conditions as evaluated by HPLC-ESI MS and TOC analyses was achieved after 90 min. Effect of co-ions (SO42-, Cl- or NO3-) on photocatalytic performance was studied, and scavenger tests were used to identify the active species involved in the photocatalytic mechanism. Also, the photocatalytic efficiency of B3 sample was tested for rhodamine B, metronidazole and 4-nitrophenol degradation. Evaluation of the stability and integrity of hybrid film after 5 catalysis cycles reveal that the photocatalytic potential is retained with no substantial structural changes.
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Affiliation(s)
- Violeta Melinte
- Polyaddition and Photochemistry Department, Petru Poni Institute of Macromolecular Chemistry, 41 A Grigore Ghica Voda Alley, 700487, Iasi, Romania.
| | - Madalina Elena Culica
- Polyaddition and Photochemistry Department, Petru Poni Institute of Macromolecular Chemistry, 41 A Grigore Ghica Voda Alley, 700487, Iasi, Romania
| | - Andreea Laura Chibac-Scutaru
- Polyaddition and Photochemistry Department, Petru Poni Institute of Macromolecular Chemistry, 41 A Grigore Ghica Voda Alley, 700487, Iasi, Romania.
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8
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Ücker CL, Almeida SR, Maron GK, Carreno NLV, Morisso FDP, da Silva Cava S, Raubach CW. Using rice husk ash as a SiO 2 source in the preparation of SiO 2/Nb 2O 5 and SiO 2/ZnS heterostructures for photocatalytic application. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:68477-68488. [PMID: 37126169 DOI: 10.1007/s11356-023-27240-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 04/21/2023] [Indexed: 05/27/2023]
Abstract
This work presents the synthesis of SiO2/Nb2O5 and SiO2/ZnS heterostructures using the microwave-assisted hydrothermal (MAH) method, which is fast and has low temperature. The silica used in the synthesis was obtained by burning the rice husk without any pre- or post-treatments. The obtained samples were characterized using various techniques such as X-ray diffraction (XRD), energy-dispersive X-ray analysis (EDX), scanning electron microscopy (SEM), Fourier transform infrared (FTIR), and UV-visible. The obtained silica was found to be amorphous, and the materials used for modification showed characteristic of the type of synthesis used. SEM images showed that Nb2O5 and ZnS interacted with the SiO2 surface, filling the voids. In the photocatalytic process, the heterostructures showed enhanced decolorization efficiency for dyes such as rhodamine B (RhB) and methylene blue (MB) compared to SiO2. For RhB, the silica decolorized approximately 24%, and for MB, it discolored approximately 27%; SiO2/Nb2O5 showed 91.24% decolorization efficiency for RhB and 72.77% MB, while SiO2/ZnS showed approximately 96% for RhB and 100% for MB. All samples were tested under the same conditions. This demonstrates that the use of rice husk residue not only improves the photocatalytic activity of heterostructures but also promotes the utilization of improperly discarded residues.
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Affiliation(s)
- Cátia Liane Ücker
- Graduate Program in Science and Materials Engineering, Technological Development Center, Federal University of Pelotas, Gomes Carneiro 1, Pelotas, RS, 96010-610, Brazil.
| | - Suelen Rodrigues Almeida
- Graduate Program in Science and Materials Engineering, Technological Development Center, Federal University of Pelotas, Gomes Carneiro 1, Pelotas, RS, 96010-610, Brazil
| | - Guilherme Kurz Maron
- Graduate Program in Science and Materials Engineering, Technological Development Center, Federal University of Pelotas, Gomes Carneiro 1, Pelotas, RS, 96010-610, Brazil
| | - Neftali Lenin Villarreal Carreno
- Graduate Program in Science and Materials Engineering, Technological Development Center, Federal University of Pelotas, Gomes Carneiro 1, Pelotas, RS, 96010-610, Brazil
| | - Fernando Dal Pont Morisso
- Postgraduate in Materials Technology and Industrial Processes, Universidade Feevale, Novo Hamburgo, RS, 93525-075, Brazil
| | - Sergio da Silva Cava
- Graduate Program in Science and Materials Engineering, Technological Development Center, Federal University of Pelotas, Gomes Carneiro 1, Pelotas, RS, 96010-610, Brazil
| | - Cristiane Wienke Raubach
- Graduate Program in Science and Materials Engineering, Technological Development Center, Federal University of Pelotas, Gomes Carneiro 1, Pelotas, RS, 96010-610, Brazil
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Limthin D, Leepheng P, Tunhoo B, Onlaor K, Klamchuen A, Phromyothin D, Thiwawong T. Preparation of surface-modified electrode of copper(ii) oxide mixed with the molecularly imprinted polymer for enhancement of melamine detection with photoelectrochemical technique. RSC Adv 2023; 13:14729-14736. [PMID: 37197674 PMCID: PMC10183999 DOI: 10.1039/d3ra01854g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 04/24/2023] [Indexed: 05/19/2023] Open
Abstract
Melamine contamination in food and beverages affects short- and long-term health. In this work, enhanced sensitivity and selectivity in photoelectrochemical determination for melamine detection was achieved using copper(ii) oxide (CuO) combined with a molecularly imprinted polymer (MIP). A CuO nanomaterial was used to achieve MIP surface modification via co-precipitation synthesis. An MIP film was deposited by polymerizing the methacrylic acid monomer and a melamine template. The properties of the CuO nanomaterials, such as the surface morphology, chemical oxidation state, and crystalline structure, were characterized using field emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction patterns (XRD), respectively. The diffuse reflection spectroscopy technique was applied to evaluate the optical properties of the CuO nanoparticles. The results indicated that the synthesized CuO nanomaterials had a monoclinic structure with an optical bandgap of 1.49 eV, which corresponds to absorbance in the visible light region. CPE electrodes with surface-modified CuO/MIP were measured using the photoelectrochemical techniques of cyclic voltammetry, differential pulse voltammetry (DPV), and amperometry. The modified CuO/MIP electrode for melamine detection in 7.4 pH PBS buffer solution exhibited a high sensitivity of 0.332 nA nM-1, with a linear range of 5.0-75.0 nM and a limit of detection of 2.45 nM. Moreover, real samples of various kinds of milk were applied to evaluate the sensing response of the prepared CuO/MIP electrode. The modified CuO/MIP electrodes could be reused seven times with good reproducibility and high selectivity for melamine detection.
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Affiliation(s)
- Dalawan Limthin
- College of Materials Innovation and Technology, King Mongkut's Institute of Technology Ladkrabang Bangkok 10520 Thailand
| | - Piyawan Leepheng
- College of Materials Innovation and Technology, King Mongkut's Institute of Technology Ladkrabang Bangkok 10520 Thailand
| | - Benchapol Tunhoo
- College of Materials Innovation and Technology, King Mongkut's Institute of Technology Ladkrabang Bangkok 10520 Thailand
- Electronic and Control System for Nanodevice Research Laboratory (ECSN), College of Materials Innovation and Technology, King Mongkut's Institute of Technology Ladkrabang 10520 Thailand
| | - Korakot Onlaor
- College of Materials Innovation and Technology, King Mongkut's Institute of Technology Ladkrabang Bangkok 10520 Thailand
- Electronic and Control System for Nanodevice Research Laboratory (ECSN), College of Materials Innovation and Technology, King Mongkut's Institute of Technology Ladkrabang 10520 Thailand
| | - Annop Klamchuen
- National Nanotechnology Center, National Science and Technology Development Agency Patumthani 12120 Thailand
| | - Darinee Phromyothin
- College of Materials Innovation and Technology, King Mongkut's Institute of Technology Ladkrabang Bangkok 10520 Thailand
| | - Thutiyaporn Thiwawong
- College of Materials Innovation and Technology, King Mongkut's Institute of Technology Ladkrabang Bangkok 10520 Thailand
- Electronic and Control System for Nanodevice Research Laboratory (ECSN), College of Materials Innovation and Technology, King Mongkut's Institute of Technology Ladkrabang 10520 Thailand
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10
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Kalaycıoğlu Z, Özuğur Uysal B, Pekcan Ö, Erim FB. Efficient Photocatalytic Degradation of Methylene Blue Dye from Aqueous Solution with Cerium Oxide Nanoparticles and Graphene Oxide-Doped Polyacrylamide. ACS OMEGA 2023; 8:13004-13015. [PMID: 37065069 PMCID: PMC10099124 DOI: 10.1021/acsomega.3c00198] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 03/21/2023] [Indexed: 06/19/2023]
Abstract
A cerium oxide nanoparticles (CeO2-NPs)/graphene oxide (GO)/polyacrylamide (PAM) ternary composite was synthesized through free-radical polymerization of acrylamide in the presence of CeO2 nanoparticles and GO in an aqueous system. The synthesized composite material was characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and energy-dispersive X-ray (EDX) spectroscopy techniques and applied for the photocatalytic degradation of methylene blue (MB) dye from an aqueous solution. Tauc's model for direct transition was used to model for the optical band gap. The key operating parameters such as the amounts of CeO2-NPs and GO, pH, initial MB concentration, type of light irradiation, and contact time have been optimized to achieve the highest MB degradation percentage. The photocatalysis process was pH-dependent, and the optimum pH value was found to be 12.0. Under UV-A light, 90% dye degradation occurred in 90 min. The degradation of MB was also specified in terms of total organic carbon (TOC) and chemical oxygen demand (COD). Free-radical capture experiments were also performed to determine the role of radical species during the photocatalytic oxidation process. The photocatalytic process showed that the equilibrium data is in good agreement with the Langmuir-Hinshelwood kinetic model. A rate constant of 0.0259 min-1 was obtained. The hydrogel was also tested to assess its reusability, which is an important key factor in practical wastewater treatment. The photocatalytic activity only decreased to 75% after nine uses.
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Affiliation(s)
- Zeynep Kalaycıoğlu
- Department
of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Maslak, Istanbul 34469, Turkey
| | - Bengü Özuğur Uysal
- Faculty
of Engineering and Natural Sciences, Kadir
Has University, Cibali, Fatih, Istanbul 34083, Turkey
| | - Önder Pekcan
- Faculty
of Engineering and Natural Sciences, Kadir
Has University, Cibali, Fatih, Istanbul 34083, Turkey
| | - F. Bedia Erim
- Department
of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Maslak, Istanbul 34469, Turkey
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11
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Mureseanu M, Cioatera N, Carja G. Fe-Ce/Layered Double Hydroxide Heterostructures and Their Derived Oxides: Electrochemical Characterization and Light-Driven Catalysis for the Degradation of Phenol from Water. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:981. [PMID: 36985874 PMCID: PMC10051958 DOI: 10.3390/nano13060981] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/03/2023] [Accepted: 03/06/2023] [Indexed: 06/18/2023]
Abstract
Fe-Ce/layered double hydroxides (LDHs) were synthesized via a facile route by exploiting the "structural memory" of the LDH when the calcined MgAlLDH and ZnAlLDH were reconstructed in the aqueous solutions of FeSO4/Ce(SO4)2. XRD analysis shows the formation of heterostructured catalysts that entangle the structural characteristics of the LDHs with those of Fe2O3 and CeO2. Furthermore, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, TG/DTG, SEM/EDX and TEM results reveal a complex morphology defined by the large nano/microplates of the reconstructed LDHs that are tightly covered with nanoparticles of Fe2O3 and CeO2. Calcination at 850 °C promoted the formation of highly crystallized mixed oxides of Fe2O3/CeO2/ZnO and spinels. The photo-electrochemical behavior of Fe-Ce/LDHs and their derived oxides was studied in a three-electrode photo-electrochemical cell, using linear sweep voltammetry (LSV), Mott-Schottky (M-S) analysis and photo-electrochemical impedance spectroscopy (PEIS) measurements, in dark or under illumination. When tested as novel catalysts for the degradation of phenol from aqueous solutions, the light-driven catalytic heterojunctions of Fe-Ce/LDH and their derived oxides reveal their capabilities to efficiently remove phenol from water, under both UV and solar irradiation.
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Affiliation(s)
- Mihaela Mureseanu
- Department of Chemistry, Faculty of Sciences, University of Craiova, Calea Bucuresti, 107I, 200478 Craiova, Romania;
| | - Nicoleta Cioatera
- Department of Chemistry, Faculty of Sciences, University of Craiova, Calea Bucuresti, 107I, 200478 Craiova, Romania;
| | - Gabriela Carja
- Faculty of Chemical Engineering and Environmental Protection, Technical University of Iasi, 71 D. Mangeron, 700050 Iasi, Romania
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12
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Bandgap engineering approach for designing CuO/Mn 3O 4/CeO 2 heterojunction as a novel photocatalyst for AOP-assisted degradation of Malachite green dye. Sci Rep 2023; 13:3009. [PMID: 36810633 PMCID: PMC9944963 DOI: 10.1038/s41598-023-30096-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Accepted: 02/15/2023] [Indexed: 02/23/2023] Open
Abstract
A ternary nanohybrid CuO/Mn3O4/CeO2 was developed in the present work using a co-precipitation-assisted hydrothermal method. The designed photocatalyst's structural, morphology, elemental composition, electronic states of elements, and optical properties were studied using corresponding analytical techniques. Results from PXRD, TEM/HRTEM, XPS, EDAX, and PL showed that the desired nanostructure had formed. Using Tauc's energy band gap plot, it was determined that the nanostructures band gap was ~ 2.44 eV, which showed the band margins of the various moieties, CeO2, Mn3O4, and CuO, had modified. Thus, improved redox conditions led to a substantial decrease in the recombination rate of electron-hole pairs, which was further explained by a PL study in that charge separation plays a key role. Under exposure to visible light irradiation for 60 min, it was revealed that the photocatalyst achieved 98.98% of photodegradation efficiency for malachite green (MG) dye. The process of photodegradation proceeded according to a pseudo-first-order reaction kinetic model with an excellent rate of reaction of 0.07295 min-1 with R2 = 0.99144. The impacts of different reaction variables, inorganic salts, and water matrices were investigated. This research seeks to create a ternary nanohybrid photocatalyst with high photostability, visible spectrum activity, and reusability up to four cycles.
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13
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Sahu AK, Zhao XS, Upadhyayula S. Ceria-based photocatalysts in water-splitting for hydrogen production and carbon dioxide reduction. CATALYSIS REVIEWS 2023. [DOI: 10.1080/01614940.2023.2166227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Affiliation(s)
- Aloka Kumar Sahu
- The University of Queensland−IIT Delhi Academy of Research (UQIDAR), Hauz Khas, New Delhi, India
- Department of Chemical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, India
- School of Chemical Engineering, The University of Queensland, St Lucia, Brisbane, Australia
| | - Xiu Song Zhao
- School of Chemical Engineering, The University of Queensland, St Lucia, Brisbane, Australia
| | - Sreedevi Upadhyayula
- Department of Chemical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, India
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14
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Gui X, Dong C, Fan S, Jiao C, Song Z, Shen J, Zhao Y, Li X, Zhang F, Ma Y, He X, Lin A, Zhang Z. Effects of CeO 2 Nanoparticles on Nutritional Quality of Two Crop Plants, Corn ( Zea mays L.) and Soybean ( Glycine max L.). Molecules 2023; 28:molecules28041798. [PMID: 36838784 PMCID: PMC9960106 DOI: 10.3390/molecules28041798] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 01/15/2023] [Accepted: 02/06/2023] [Indexed: 02/17/2023] Open
Abstract
With the widespread applications of manufactured nanoparticles (NPs), there are increasing concerns about their potential adverse effects on the environment and living systems. Many studies demonstrated that NPs could significantly affect the growth and development of crop plants. However, knowledge regarding the impacts of NPs on crop quality is rather limited. In this study, the effects of CeO2 NPs (25, 75, and 225 mg Ce/kg) and CeCl3 (25 mg Ce/kg) on the nutritional components of soil-cultivated corn and soybean plants were evaluated. Both treatments tended to decrease the dry weight of grain per plant, while only 225 mg/kg CeO2 NPs on soybean and CeCl3 on corn showed statistical significance compared with the respective control. CeO2 NPs at 225 mg/kg significantly decreased the content of starch in the corn kernels by 18.2% but increased total phenols in soybean seeds by 18.4%. Neither CeO2 NPs nor CeCl3 significantly affected the contents of minerals in corn kernels except for Zn. However, in the case of soybean, the two treatments tended to decrease the contents of P, Zn, Mn, and Mo but increase the content of S. Overall, the results suggest that CeO2 NPs and Ce3+ ions showed similar but not identical effects on corn and soybean plants. CeO2 NPs affect the nutritional quality of crop plants in a species-dependent manner.
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Affiliation(s)
- Xin Gui
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
- College of Forestry, Henan Agriculture University, Zhengzhou 450002, China
| | - Chaonan Dong
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
- Department of Environmental Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Shixian Fan
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
- College of Forestry, Henan Agriculture University, Zhengzhou 450002, China
| | - Chunlei Jiao
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Zhuda Song
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Jiaqi Shen
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Yong Zhao
- College of Forestry, Henan Agriculture University, Zhengzhou 450002, China
| | - Xuanzhen Li
- College of Forestry, Henan Agriculture University, Zhengzhou 450002, China
| | - Fawen Zhang
- College of Forestry, Henan Agriculture University, Zhengzhou 450002, China
- Correspondence: (F.Z.); (A.L.); (Z.Z.)
| | - Yuhui Ma
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Xiao He
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Aijun Lin
- Department of Environmental Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Correspondence: (F.Z.); (A.L.); (Z.Z.)
| | - Zhiyong Zhang
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Correspondence: (F.Z.); (A.L.); (Z.Z.)
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15
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Liu Q, He J, Yang W, Wu Q, Zou L, Wu Y, Yang L, Shi G, Yang X. Mesoporous ceria nanoparticles for ultra-fast and highly flexible photo-fenton catalytic reaction. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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16
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Facial One-Pot Synthesis, Characterization, and Photocatalytic Performance of Porous Ceria. Catalysts 2023. [DOI: 10.3390/catal13020240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
A facial one-step synthesis procedure was applied to prepare porous sponge-like ceria (CeO2). The synthesis was performed by mixing cerium nitrate with citric acid, followed by thermal treatment. The produced solid material was characterized by several techniques, such as XRD, SEM, N2 sorption measurement, DR-UV-vis, and Raman spectroscopy. The characterization data showed that the nanoparticles of the porous ceria were formed with a three-dimensional pore system. Moreover, the measured surface area of the porous sample was eight times higher than the commercially available ceria. The photocatalytic performance of the porous ceria was investigated in two different applications under visible light illumination. The first was the decolorization of a methyl green aqueous solution, while the second was the photocatalytic elimination of a gaseous mixture consisting of five short-chain hydrocarbons (C1–C3). The obtained results showed that the photocatalytic activity of porous ceria was higher than that of the commercial sample. Finally, the recycling of porous ceria showed low deactivation (less than 9%) after four consecutive runs.
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17
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Solís RR, Rodríguez-Padrón D, Martín-Lara MÁ, Calero M, Luque R, Muñoz-Batista MJ. Coffee-waste templated CeO x/TiO 2 nanostructured materials for selective photocatalytic oxidations. CHEMOSPHERE 2023; 311:136672. [PMID: 36228727 DOI: 10.1016/j.chemosphere.2022.136672] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 09/14/2022] [Accepted: 09/27/2022] [Indexed: 06/16/2023]
Abstract
An environmentally friendly solvent-free approach was tested using spent coffee as a biomass sacrificial template for the preparation of TiO2 modified with CeOx. The use of coffee as a template pursues the preparation of a nanostructured heterojunction without the need for a solvent. Two variables were optimized in the synthesis process, i.e. calcination temperature and proportion of CeOx. Firstly, bare coffee-template titania was prepared to explore the effect of the calcination temperature, within 500-650 °C. The anatase phase was obtained up to 600 °C. Higher temperatures, i.e. 650 °C, led to the appearance of rutile (10%) and efficient removal of the sacrificial agent (0.6% residue). The maximum photocatalytic activity in terms of conversion, in the oxidation of benzyl alcohol, was achieved employing the bare coffee-template TiO2 at 650 °C, and it was found comparable to the benchmarked P25. The incorporation of ceria in the solvent-free approach considerably improved photocatalytic benzaldehyde production. No changes in the XRD pattern of TiO2 were appreciated in the presence of ceria due to the low amount added, within 1.5-6.0%, confirmed by XPS as superficial Ce3+/Ce4+. The UV-visible absorption spectra were considerably redshifted in the presence of Ce, reducing the bandgap values of bare titania. An optimum amount of ceria in the structure within 3-0% was found. In this case, the selectivity towards benzaldehyde was ca. 75%, 3 times higher than the selectivity value registered for the benchmarked P25 or the bare prepared TiO2.
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Affiliation(s)
- Rafael R Solís
- Department of Chemical Engineering, Faculty of Sciences, University of Granada, Avda. Fuentenueva, 18071, Granada, Spain
| | - Daily Rodríguez-Padrón
- Dipartimento di Scienze Molecolari e Nanosistemi, UniversitàCa' Foscari di Venezia, 30123 Venezia, Italy
| | - María Ángeles Martín-Lara
- Department of Chemical Engineering, Faculty of Sciences, University of Granada, Avda. Fuentenueva, 18071, Granada, Spain
| | - Mónica Calero
- Department of Chemical Engineering, Faculty of Sciences, University of Granada, Avda. Fuentenueva, 18071, Granada, Spain
| | - Rafael Luque
- Department of Organic Chemistry, University of Córdoba, Campus de Rabanales, Edificio Marie Curie (C-3), Ctra. Nacional IV-A Km 396, E14014, Córdoba, Spain; Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Str, 117198, Moscow, Russia
| | - Mario J Muñoz-Batista
- Department of Chemical Engineering, Faculty of Sciences, University of Granada, Avda. Fuentenueva, 18071, Granada, Spain.
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18
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CdS Nanoparticles Decorated 1D CeO2 Nanorods for Enhanced Photocatalytic Desulfurization Performance. Catalysts 2022. [DOI: 10.3390/catal12111478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
CdS nanoparticles were constructed onto one-dimensional (1D) CeO2 nanorods by a two-step hydrothermal method. The X-ray diffraction (XRD), transmission election microscopy (TEM), Raman spectra, X-ray photoelectron spectra (XPS) and UV-Vis diffuse reflection spectroscopy (DRS) techniques were used to characterize these CdS/CeO2 nanocomposites. It was concluded that when the molar ratio of CdS and CeO2 was 1:1, the nanocomposites exhibited the best photocatalytic desulfurization activity, reaching 92% in 3 h. Meanwhile, transient photocurrent (PT) measurement, photoluminescence (PL) spectra and electrochemical impedance spectroscopy (EIS) measurement indicated that the modification of CeO2 nanorods by CdS nanoparticles could significantly inhibit the recombination of photogenerated electrons and holes. In addition, the possible mechanism of photocatalytic oxidation desulfurization of the nanocomposites was proposed. This study may provide an effective CeO2-based photocatalyst for photocatalytic desulfurization applications.
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19
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Engelhardt TB, Schmitz‐Stöwe S, Schwarz T, Stöwe K. Investigation of Photocatalyst Composites for Pollutant Degradation in a Microslit Reactor Utilizing High Throughput Screening Techniques. Chemistry 2022; 11:e202200180. [PMID: 36385481 PMCID: PMC9668610 DOI: 10.1002/open.202200180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 10/04/2022] [Indexed: 11/18/2022]
Abstract
The high-throughput screening investigations on TiO2 based photocatalyst composites presented here have been carried out in a 60-fold parallel photoreactor. Additional catalyst testing was performed in a microslit reactor system with immobilized catalysts. For further enhancing the photocatalytic activity of TiO2 (P25), composites of P25 and, for example, Bi2 O3 , CeO2 , g-C3 N4 , WO3 or ZnO were formulated in different nominal molar ratios. The catalysts' performances were assessed by their conversion of 17α-ethinyl estradiol (EE2) in aqueous solutions, determined by LC-MS. Findings show rapid EE2 conversions in short residence times. The extensive testing of catalysts led to the conclusion that the photocatalytic conversion is rather a function of residence time than a function of the materials utilized. This makes adequate process development seem more important than material development. The novelty of this contribution lies in the unique combination of testing a wide range of composite catalysts in a unique microreactor geometry.
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Affiliation(s)
- Tony B. Engelhardt
- Institute of ChemistryFaculty of Natural SciencesUniversity of Technology ChemnitzStraße der Nationen 6209111ChemnitzGermany
| | - Sabine Schmitz‐Stöwe
- Institute of ChemistryFaculty of Natural SciencesUniversity of Technology ChemnitzStraße der Nationen 6209111ChemnitzGermany
| | - Thomas Schwarz
- Institute of ChemistryFaculty of Natural SciencesUniversity of Technology ChemnitzStraße der Nationen 6209111ChemnitzGermany
| | - Klaus Stöwe
- Institute of ChemistryFaculty of Natural SciencesUniversity of Technology ChemnitzStraße der Nationen 6209111ChemnitzGermany
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20
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Fifere N, Airinei A, Asandulesa M, Rotaru A, Ursu EL, Doroftei F. Investigating the Vibrational, Magnetic and Dielectric Properties, and Antioxidant Activity of Cerium Oxide Nanoparticles. Int J Mol Sci 2022; 23:ijms232213883. [PMID: 36430362 PMCID: PMC9698846 DOI: 10.3390/ijms232213883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/04/2022] [Accepted: 11/07/2022] [Indexed: 11/13/2022] Open
Abstract
Dielectric, magnetic and Raman measurements of cerium oxide nanoparticles obtained by the precipitation method are discussed. Morphological study was performed by scanning electron microscopy, confirming the formation of nanoparticles of 5-27 nm. The Raman spectra exhibited a strong band around 465 cm-1, corresponding to the symmetrical stretching mode of the Ce-O8 vibrational unit. The nature of the room temperature ferromagnetism of cerium oxide nanoparticles was analyzed, taking into account the oxygen defects at the surface or interface of the nanoparticles. The evolution of dielectric constant, ε', and dielectric loss, ε″ was studied as a function of frequency at different temperatures. Additionally, the variation of the electric conductivity versus temperature was investigated. Finally, complex impedance study of the cerium oxide nanoparticles was performed.
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Affiliation(s)
- Nicusor Fifere
- Petru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Anton Airinei
- Petru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
- Correspondence:
| | - Mihai Asandulesa
- Petru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Aurelian Rotaru
- Faculty of Electrical Engineering and Computer Science & MANSiD Research Center, Stefan cel Mare University, 13 Str. Universitatii, 720229 Suceava, Romania
| | - Elena Laura Ursu
- Petru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Florica Doroftei
- Petru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
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21
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Sekar S, Bathula C, Rabani I, Lee JW, Lee SH, Seo YS, Lee S. Enhanced photocatalytic crystal-violet degradation performances of sonochemically-synthesized AC-CeO 2 nanocomposites. ULTRASONICS SONOCHEMISTRY 2022; 90:106177. [PMID: 36174271 PMCID: PMC9520071 DOI: 10.1016/j.ultsonch.2022.106177] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 09/14/2022] [Accepted: 09/22/2022] [Indexed: 05/28/2023]
Abstract
Semiconductor-based photocatalysis is one of the favorable techniques for the wastewater treatment. Herein, we synthesized the activated carbon-decorated cerium dioxide (AC-CeO2) nanocomposites via the facile ultrasonication method by using the biomass-derived AC nanoflakes and the sonochemically-synthesized CeO2 nanoparticles. The AC-CeO2 nanocomposites exhibited the aggregated morphology with the AC nanoflakes-anchored CeO2 nanoparticles. Since the hybridization of conductive AC and semiconductive CeO2 would lead to the increased photocarrier transport and the reduced photocarrier recombination, during the photocatalytic reaction, the AC-CeO2 nanocomposites showed the enhanced crystal violet dye-degradation efficiency up to 97.9 % within 135 min. The results suggest that the AC-CeO2 nanocomposites hold promise as a prominent photocatalyst for future green environmental technology.
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Affiliation(s)
- Sankar Sekar
- Department of Semiconductor Science, Dongguk University-Seoul, Seoul 04620, Republic of Korea; Quantum-functional Semiconductor Research Center, Dongguk University-Seoul, Seoul 04620, Republic of Korea
| | - Chinna Bathula
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea
| | - Iqra Rabani
- Interface Lab, Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Republic of Korea
| | - Jin Woo Lee
- Department of Semiconductor Science, Dongguk University-Seoul, Seoul 04620, Republic of Korea
| | - So Hyun Lee
- Department of Semiconductor Science, Dongguk University-Seoul, Seoul 04620, Republic of Korea
| | - Young-Soo Seo
- Interface Lab, Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Republic of Korea
| | - Sejoon Lee
- Department of Semiconductor Science, Dongguk University-Seoul, Seoul 04620, Republic of Korea; Quantum-functional Semiconductor Research Center, Dongguk University-Seoul, Seoul 04620, Republic of Korea.
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22
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Fast photocatalytic oxidation of ciprofloxacin over Co3O4@CeO2 heterojunctions under visible-light. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2022.104563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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23
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Melinte V, Trifan SI, Chibac-Scutaru AL, Podasca V, Coseri S. Reusable catalysts based on CeO 2/cellulose derivative with visible light photocatalytic activity tuned by noble metal nanoparticles inclusion. Int J Biol Macromol 2022; 222:736-749. [PMID: 36174862 DOI: 10.1016/j.ijbiomac.2022.09.221] [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: 07/29/2022] [Revised: 09/22/2022] [Accepted: 09/24/2022] [Indexed: 11/30/2022]
Abstract
For environmental preservation, it is crucial to effectively remove organic waste from water. Several approaches have been put forth, but photocatalysis stands out as a quick and effective solution. In this study, some hybrid polymeric structures that were created by photopolymerizing cellulose acetate/castor oil urethane methacrylates with embedded CeO2 nanoparticles (NPs) and in situ photogenerated noble metal nanoparticles (Ag, Au, Pd) are characterized, and photochemically thoroughly evaluated. The effective modification of cellulose acetate with urethane methacrylate sequences and the degree of functionalization were first observed using 1H NMR and FTIR spectra. Additionally, scanning and transmission electron microscopy, X-ray diffraction, FT-IR and UV-visible spectroscopy were utilized to analyse the resultant nanocomposites. The homogeneous dispersion of CeO2 NPs (10-40 nm) into an organic matrix with the suitable functionalities, namely urethane and hydroxyl groups, favour the interfacial charge transfer reducing the Eg up to 2.85 eV. Moreover, noble metal nanoparticles (5-15 nm), such as Ag, Au and Pd introduction in nanocomposites, significantly lowered the Eg: 2.1 eV for CeAg samples, 1.7 eV for CeAu films and 1.5 eV for CePd films, respectively. This opens up new avenues for the creation of flexible cellulose-based photocatalysts that are active in visible light.
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Affiliation(s)
- Violeta Melinte
- "Petru Poni" Institute of Macromolecular Chemistry, Polyaddition and Photochemistry Department, 41 A Grigore Ghica Voda Alley, 700487, Iasi, Romania
| | - Sabina I Trifan
- "Petru Poni" Institute of Macromolecular Chemistry, Polyaddition and Photochemistry Department, 41 A Grigore Ghica Voda Alley, 700487, Iasi, Romania
| | - Andreea L Chibac-Scutaru
- "Petru Poni" Institute of Macromolecular Chemistry, Polyaddition and Photochemistry Department, 41 A Grigore Ghica Voda Alley, 700487, Iasi, Romania.
| | - Viorica Podasca
- "Petru Poni" Institute of Macromolecular Chemistry, Polyaddition and Photochemistry Department, 41 A Grigore Ghica Voda Alley, 700487, Iasi, Romania
| | - Sergiu Coseri
- "Petru Poni" Institute of Macromolecular Chemistry, Polyaddition and Photochemistry Department, 41 A Grigore Ghica Voda Alley, 700487, Iasi, Romania
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Phattranit Dumrongrojthanath, Phuruangrat A, Sakhon T, Thongtem T, Thongtem S. Effect of Gd Dopant on Visible-Light-Driven Photocatalytic Properties of CeO2 Nanowires Synthesized Microwave-Assisted Hydrothermal Method. RUSS J INORG CHEM+ 2022. [DOI: 10.1134/s0036023622600757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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25
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Kusworo TD, Kumoro AC, Utomo DP. Photocatalytic nanohybrid membranes for highly efficient wastewater treatment: A comprehensive review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 317:115357. [PMID: 35617864 DOI: 10.1016/j.jenvman.2022.115357] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 04/29/2022] [Accepted: 05/17/2022] [Indexed: 06/15/2023]
Abstract
Wastewater is inevitably generated from human activities as part of the life cycle chain that potentially damages the environment. The integration of photocatalytic reaction and membrane separation for wastewater treatment has gained great attention in recent studies. However, there are still many technical limitations for its application such as toxic metal release, catalyst deactivation, fouling/biofouling, polymer disintegration, and separation performance decline. Different types, combinations, and modifications of photocatalysts material combined with membranes such as semiconductor metal oxides, binary/ternary hybrid metal oxides, elemental doped semiconductors, and metal-organic frameworks (MOFs) for improving the performance and compatibility are presented and discussed. The strategies of incorporating photocatalysts into membrane matrix for pursuing the most stable membrane integrity, high photocatalytic efficiency, and excellent perm-selectivity performance in the very recent studies were discussed. This review also outlines the performance enhancement of photocatalytic membranes (PMs) in wastewater treatment and its potential for water reclamation. Photocatalysts enhanced membrane separation by inducing anti-fouling and self-cleaning properties as well as antibacterial activity. Based on the reviewed study, PMs are possible to achieve complete removal of emerging contaminants and ∼99% reduction of bacterial colony that leading on the zero liquid discharge (ZLD). However, the intensive exposure of photo-induced radicals potentially damages the polymeric membrane. Therefore, future studies should be focused on fabricating chemically stable host-membrane material. Moreover, the light source and the membrane module design for the practical application by considering the hydrodynamic and cost-efficiency should be a concern for technology diffusion to the industrial-scale application.
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Affiliation(s)
- Tutuk Djoko Kusworo
- Department of Chemical Engineering, Faculty of Engineering, University of Diponegoro, Semarang, 50275, Indonesia.
| | - Andri Cahyo Kumoro
- Department of Chemical Engineering, Faculty of Engineering, University of Diponegoro, Semarang, 50275, Indonesia
| | - Dani Puji Utomo
- Department of Chemical Engineering, Faculty of Engineering, University of Diponegoro, Semarang, 50275, Indonesia
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Mo-/O-deficient Bi2Mo3(S,O)12 oxysulfide for enhanced visible-light photocatalytic H2 evolution and pollutant reduction via in-situ generated protons: A case of material design in converting an oxidative Bi2Mo3O12 catalyst for the reduction. J Catal 2022. [DOI: 10.1016/j.jcat.2022.08.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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27
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Vasilyeva MS, Lukiyanchuk IV, Shchitovskaya EV, Golushko AD, Kondrikov NB. Plasma Electrolytic Formation and Photoelectrochemical Properties of Zr- and/or Ce-Containing Oxide Layers on Titanium. RUSS J INORG CHEM+ 2022. [DOI: 10.1134/s0036023622090182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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28
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Navarro-López DE, Sánchez-Huerta TM, Flores-Jimenez MS, Tiwari N, Sanchez-Martinez A, Ceballos-Sanchez O, Garcia-Gonzalez A, Fuentes-Aguilar RQ, Sanchez-Ante G, Corona-Romero K, Rincón-Enríquez G, López-Mena ER. Nanocomposites based on doped ZnO nanoparticles for antibacterial applications. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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29
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Chen L, Arellano U, Wang J, Balcázar L, Sotelo R, Solis S, Azomosa M, González J, González Vargas O, Song Y, Liu J, Zhou X. Oxygen defect, electron transfer and photocatalytic activity of Ag/CeO2/SBA-15 hybrid catalysts. Catal Today 2022. [DOI: 10.1016/j.cattod.2021.10.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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30
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Motamedi M, Yerushalmi L, Haghighat F, Chen Z. Recent developments in photocatalysis of industrial effluents ։ A review and example of phenolic compounds degradation. CHEMOSPHERE 2022; 296:133688. [PMID: 35074327 DOI: 10.1016/j.chemosphere.2022.133688] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 01/16/2022] [Accepted: 01/17/2022] [Indexed: 06/14/2023]
Abstract
Industrial expansion and increased water consumption have created water scarcity concerns. Meanwhile, conventional wastewater purification methods have failed to degrade recalcitrant pollutants efficiently. The present review paper discusses the recent advances and challenges in photocatalytic processes applied for industrial effluents treatment, with respect to phenolic compounds degradation. Key operational parameters including the catalyst loading, light intensity, initial pollutants concentration, pH, and type and concentrations of oxidants are evaluated and discussed. Compared to the other examined controlling parameters, pH has the highest effect on the photo-oxidation of contaminants by means of the photocatalyst ionization degree and surface charge. Furthermore, major phenolic compounds derived from industrial sources are comprehensively presented and the applicability of photocatalytic processes and the barriers in practical applications, including high energy demand, technical challenges, photocatalyst stability, and recyclability have been explored. The importance of energy consumption and operational costs for realistic large-scale processes are also discussed. Finally, research gaps in this area and the suggested direction for improving degradation efficiencies in industrial applications are presented. In the light of these premises, selective degradation processes in real water matrices such as untreated sewage are proposed.
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Affiliation(s)
- Mahsa Motamedi
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, H3G 1M8, Canada
| | - Laleh Yerushalmi
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, H3G 1M8, Canada
| | - Fariborz Haghighat
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, H3G 1M8, Canada
| | - Zhi Chen
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, H3G 1M8, Canada.
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Maharjan RS, Singh AV, Hanif J, Rosenkranz D, Haidar R, Shelar A, Singh SP, Dey A, Patil R, Zamboni P, Laux P, Luch A. Investigation of the Associations between a Nanomaterial's Microrheology and Toxicology. ACS OMEGA 2022; 7:13985-13997. [PMID: 35559161 PMCID: PMC9089358 DOI: 10.1021/acsomega.2c00472] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Accepted: 03/25/2022] [Indexed: 05/10/2023]
Abstract
With the advent of Nanotechnology, the use of nanomaterials in consumer products is increasing on a daily basis, due to which a deep understanding and proper investigation regarding their safety and risk assessment should be a major priority. To date, there is no investigation regarding the microrheological properties of nanomaterials (NMs) in biological media. In our study, we utilized in silico models to select the suitable NMs based on their physicochemical properties such as solubility and lipophilicity. Then, we established a new method based on dynamic light scattering (DLS) microrheology to get the mean square displacement (MSD) and viscoelastic property of two model NMs that are dendrimers and cerium dioxide nanoparticles in Dulbecco's Modified Eagle Medium (DMEM) complete media at three different concentrations for both NMs. Subsequently, we established the cytotoxicological profiling using water-soluble tetrazolium salt-1 (WST-1) and a reactive oxygen species (ROS) assay. To take one step forward, we further looked into the tight junction properties of the cells using immunostaining with Zonula occluden-1 (ZO-1) antibodies and found that the tight junction function or transepithelial resistance (TEER) was affected in response to the microrheology and cytotoxicity. The quantitative polymerase chain reaction (q-PCR) results in the gene expression of ZO-1 after the 24 h treatment with NPs further validates the findings of immunostaining results. This new method that we established will be a reference point for other NM studies which are used in our day-to-day consumer products.
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Affiliation(s)
- Romi Singh Maharjan
- German
Federal Institute for Risk Assessment (BfR), Department of Chemical and Product Safety, Max-Dohrn-Straße 8-10, 10589 Berlin, Germany
| | - Ajay Vikram Singh
- German
Federal Institute for Risk Assessment (BfR), Department of Chemical and Product Safety, Max-Dohrn-Straße 8-10, 10589 Berlin, Germany
| | - Javaria Hanif
- University
of Potsdam, Department of Food
Chemistry, 14476 Potsdam, Germany
| | - Daniel Rosenkranz
- Klinikum
Oldenburg, University Medical Center Oldenburg,
Institute for Clinic Chemistry and Laboratory Medicine, 26133 Oldenburg, Germany
| | - Rashad Haidar
- German
Federal Institute for Risk Assessment (BfR), Department of Chemical and Product Safety, Max-Dohrn-Straße 8-10, 10589 Berlin, Germany
| | - Amruta Shelar
- Department
of Technology, Savitribai Phule Pune University, Pune 411007, MH, India
| | | | - Aditya Dey
- Faculty
of Informatics, Otto von Guericke University, Magdeburg 39106, Germany
| | - Rajendra Patil
- Department
of Biotechnology, Savitribai Phule Pune
University, Pune 411007, MH, India
| | - Paolo Zamboni
- Department
of Translational Medicine for Romagna, University
of Ferrara, 44121 Ferrara, Italy
| | - Peter Laux
- German
Federal Institute for Risk Assessment (BfR), Department of Chemical and Product Safety, Max-Dohrn-Straße 8-10, 10589 Berlin, Germany
| | - Andreas Luch
- German
Federal Institute for Risk Assessment (BfR), Department of Chemical and Product Safety, Max-Dohrn-Straße 8-10, 10589 Berlin, Germany
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Chibac-Scutaru AL, Podasca V, Dascalu IA, Melinte V. Exploring the Influence of Synthesis Parameters on the Optical Properties for Various CeO 2 NPs. NANOMATERIALS 2022; 12:nano12091402. [PMID: 35564111 PMCID: PMC9100359 DOI: 10.3390/nano12091402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/14/2022] [Accepted: 04/17/2022] [Indexed: 02/01/2023]
Abstract
Cerium oxide (CeO2) nanoparticles were synthesized with a chemical precipitation method in different experimental conditions using cerium nitrate hexahydrate (Ce(NO3)3·6H2O) as a precursor, modifying the solution pH, the reaction time, and Co atoms as dopants, in order to tune the band gap energy values of the prepared samples. The physical characteristics of the synthesized ceria nanoparticles were evaluated by Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV–Vis analyses and photoluminescence measurements. XRD data revealed a pure cubic fluorite structure of CeO2 NPs, the estimation of crystallite sizes by Scherrer’s formula indicates the formation of crystals with dimensions between 11.24 and 21.65 nm. All samples contain nearly spherical CeO2 nanoparticles, as well as cubic, rhomboidal, triangular, or polyhedral nanoparticles that can be identified by TEM images. The optical investigation of CeO2 samples revealed that the band gap energy values are between 3.18 eV and 2.85 eV, and, after doping with Co atoms, the Eg of samples decreased to about 2.0 eV. In this study, we managed to obtain CeO2 NPs with Eg under 3.0 eV by only modifying the synthesis parameters. In addition, by doping with Co ions, the band gap energy value was lowered to 2.0 eV. This aspect leads to promising results that provide an encouraging approach for future photocatalytic investigations.
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Affiliation(s)
- Andreea L. Chibac-Scutaru
- Polyaddition and Photochemistry Department, Petru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (A.L.C.-S.); (V.P.)
| | - Viorica Podasca
- Polyaddition and Photochemistry Department, Petru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (A.L.C.-S.); (V.P.)
| | - Ioan A. Dascalu
- Centre of Advanced Research in Bionanoconjugates and Biopolymers (IntelCentru), Petru Poni Institute of Macromolecular Chemistry, 41A GrigoreGhicaVoda Alley, 700487 Iasi, Romania;
| | - Violeta Melinte
- Polyaddition and Photochemistry Department, Petru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (A.L.C.-S.); (V.P.)
- Correspondence:
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Advanced Functionalized CeO 2/Al 2O 3 Nanocomposite Sensor for Determination of Opioid Medication Tramadol Hydrochloride in Pharmaceutical Formulations. NANOMATERIALS 2022; 12:nano12081373. [PMID: 35458081 PMCID: PMC9025318 DOI: 10.3390/nano12081373] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 04/11/2022] [Accepted: 04/13/2022] [Indexed: 01/22/2023]
Abstract
BACKGROUND The exceptional characteristics of cerium oxide (CeO2) and aluminum oxide (Al2O3) nanoscales have inspired significant attention to those nanocomposites as possible electroactive resources for applications of sensing and biosensing. METHODS In this research, an innovative new factionalized CeO2/Al2O3 nanocomposite membrane sensor was presented to assess tramadol hydrochloride (TRD) in marketable products. RESULTS Tramadol-phosphomolybdate (TRD-PM) was formed by mixing tramadol hydrochloride and phosphomolybdic acid (PMA) in the attendance of polymeric matrix and o-nitrophenyloctyl ether solvent mediator. With 1.0 × 10-10-1.0 × 10-2 mol L-1 as a range of linearity and EmV = (57.567 ± 0.2) log [TRD] + 676.29 as a regression equation, the functionalized sensor using TRD-PM-CeO2/Al2O3 nanocomposite showed great selectivity and sensitivity for the discriminating and measurement of TRD. Using the regression equation EmV = (52.143 ± 0.4) log [TRD] + 431.45, the unmodified coated wire sensor of TRD-PM, on the other hand, showed a Nernstian response between 1.0 × 10-6 and 1.0 × 10-2 mol L-1, Using the methodology's specified guidelines, the proposed improved potentiometric system was validated against several criteria. CONCLUSION The suggested method is suitable for the determination of TRD in its products.
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Mingmongkol Y, Trinh DTT, Phuinthiang P, Channei D, Ratananikom K, Nakaruk A, Khanitchaidecha W. Enhanced Photocatalytic and Photokilling Activities of Cu-Doped TiO2 Nanoparticles. NANOMATERIALS 2022; 12:nano12071198. [PMID: 35407316 PMCID: PMC9000674 DOI: 10.3390/nano12071198] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/31/2022] [Accepted: 04/01/2022] [Indexed: 01/16/2023]
Abstract
In this work, metal-doped titanium dioxide (TiO2) was synthesised with the aim of improving photocatalytic degradation and antimicrobial activities; TiO2 was doped with copper (Cu) ranging from 0.1 to 1.0 wt%. The physical and chemical properties of the Cu-doped TiO2 nanoparticles were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), the Brunauer–Emmett–Teller method (BET) and diffuse reflection spectroscopy (DRS). The results revealed that the anatase phase of TiO2 was maintained well in all the Cu-doped TiO2 samples. No significant difference in the particle sizes or the specific surface areas was caused by increasing Cu doping. However, the band gap decreased continuously from 3.20 eV for undoped TiO2 to 3.12 eV for 1.0 wt.% Cu-doped TiO2. In addition, the 0.1 wt.% Cu-doped TiO2 displayed a much greater photocatalytic degradation of methylene blue (MB) and excellent antibacterial ability for Escherichia coli (E. coli) compared to undoped TiO2. On the other hand, the high Cu doping levels had negative impacts on the surface charge of nanoparticles and charge transfer for OH• generation, resulting in decreasing MB degradation and E. coli photokilling for 1.0 wt.% Cu-doped TiO2.
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Affiliation(s)
- Yumatorn Mingmongkol
- Department of Civil Engineering, Faculty of Engineering, Naresuan University, Phitsanulok 65000, Thailand; (Y.M.); (P.P.)
- Centre of Excellence for Innovation and Technology for Water Treatment, Faculty of Engineering, Naresuan University, Phitsanulok 65000, Thailand; (D.T.T.T.); (A.N.)
| | - Dang Trung Tri Trinh
- Centre of Excellence for Innovation and Technology for Water Treatment, Faculty of Engineering, Naresuan University, Phitsanulok 65000, Thailand; (D.T.T.T.); (A.N.)
- Institute of Environmental Science & Technology, Tra Vinh University, Tra Vinh 87000, Vietnam
| | - Patcharaporn Phuinthiang
- Department of Civil Engineering, Faculty of Engineering, Naresuan University, Phitsanulok 65000, Thailand; (Y.M.); (P.P.)
- Centre of Excellence for Innovation and Technology for Water Treatment, Faculty of Engineering, Naresuan University, Phitsanulok 65000, Thailand; (D.T.T.T.); (A.N.)
| | - Duangdao Channei
- Department of Chemistry, Faculty of Science, Naresuan University, Phitsanulok 65000, Thailand;
| | - Khakhanang Ratananikom
- Department of Science and Mathematics, Faculty of Science and Health Technology, Kalasin University, Kalasin 46000, Thailand;
| | - Auppatham Nakaruk
- Centre of Excellence for Innovation and Technology for Water Treatment, Faculty of Engineering, Naresuan University, Phitsanulok 65000, Thailand; (D.T.T.T.); (A.N.)
- Department of Industrial Engineering, Faculty of Engineering, Naresuan University, Phitsanulok 65000, Thailand
| | - Wilawan Khanitchaidecha
- Department of Civil Engineering, Faculty of Engineering, Naresuan University, Phitsanulok 65000, Thailand; (Y.M.); (P.P.)
- Centre of Excellence for Innovation and Technology for Water Treatment, Faculty of Engineering, Naresuan University, Phitsanulok 65000, Thailand; (D.T.T.T.); (A.N.)
- Correspondence:
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GNR@CeO2 heterojunction as a novel sonophotocatalyst: Degradation of tetracycline hydrochloride, kinetic modeling and synergistic effects. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128324] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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36
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Wei Y, Li Y, Han D, Liu J, Lyu S, Li C, Tan Y, Wang Z, Yu J. Facile strategy to construct porous CuO/CeO2 nanospheres with enhanced catalytic activity toward CO catalytic oxidation at low temperature. APPLIED NANOSCIENCE 2022. [DOI: 10.1007/s13204-021-02334-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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37
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El‐Salamony RA, Aboutaleb WA. Preparation, Characterization of Green Synthesis CeO
2
Nanoparticles and Their Photocatalytic Activity towards Malachite Green Dye. ChemistrySelect 2022. [DOI: 10.1002/slct.202103722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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38
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Formation of Co-O bonds and reversal of thermal annealing effects induced by X-ray irradiation in (Y, Co)-codoped CeO 2 nanocrystals. Sci Rep 2022; 12:1578. [PMID: 35091660 PMCID: PMC8799635 DOI: 10.1038/s41598-022-05691-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 01/17/2022] [Indexed: 11/21/2022] Open
Abstract
We report an unconventional effect of synchrotron X-ray irradiation in which Co–O bonds in thermally annealed (Y, Co)-codoped CeO2 nanocrystal samples were formed due to, instead of broken by, X-ray irradiation. Our experimental data indicate that escaping oxygen atoms from X-ray-broken Ce–O bonds may be captured by Co dopant atoms to form additional Co–O bonds. Consequently, the Co dopant atoms were pumped by X-rays from the energetically-favored thermally-stable Co-O4 square-planar structure to the metastable octahedral Co-O6 environment, practically a reversal of thermal annealing effects in (Y, Co)-codoped CeO2 nanocrystals. The band gap of doped CeO2 with Co dopant in the Co-O6 structure was previously found to be 1.61 eV higher than that with Co in the Co-O4 environment. Therefore, X-ray irradiation can work with thermal annealing in opposing directions to fine tune and optimize the band gap of the material for specific technological applications.
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Amaldoss MJN, Mehmood R, Yang J, Koshy P, Kumar N, Unnikrishnan A, Sorrell CC. Anticancer Therapeutic Effects of Cerium Oxide Nanoparticles: Known and Unknown Molecular Mechanisms. Biomater Sci 2022; 10:3671-3694. [DOI: 10.1039/d2bm00334a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cerium-based nanoparticles (CeNPs), particularly cerium oxide (CeO2), have been studied extensively for their antioxidant and prooxidant properties. However, their complete redox and enzyme-mimetic mechanisms of therapeutic action at the molecular...
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40
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Miran HA, Jaf ZN, Altarawneh M, Jiang ZT. An Insight into Geometries and Catalytic Applications of CeO 2 from a DFT Outlook. Molecules 2021; 26:6485. [PMID: 34770889 PMCID: PMC8588098 DOI: 10.3390/molecules26216485] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 10/19/2021] [Accepted: 10/21/2021] [Indexed: 11/18/2022] Open
Abstract
Rare earth metal oxides (REMOs) have gained considerable attention in recent years owing to their distinctive properties and potential applications in electronic devices and catalysts. Particularly, cerium dioxide (CeO2), also known as ceria, has emerged as an interesting material in a wide variety of industrial, technological, and medical applications. Ceria can be synthesized with various morphologies, including rods, cubes, wires, tubes, and spheres. This comprehensive review offers valuable perceptions into the crystal structure, fundamental properties, and reaction mechanisms that govern the well-established surface-assisted reactions over ceria. The activity, selectivity, and stability of ceria, either as a stand-alone catalyst or as supports for other metals, are frequently ascribed to its strong interactions with the adsorbates and its facile redox cycle. Doping of ceria with transition metals is a common strategy to modify the characteristics and to fine-tune its reactive properties. DFT-derived chemical mechanisms are surveyed and presented in light of pertinent experimental findings. Finally, the effect of surface termination on catalysis by ceria is also highlighted.
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Affiliation(s)
- Hussein A. Miran
- Department of Physics, College of Education for Pure Science, Ibn Al-Haitham, University of Baghdad, Baghdad 10071, Iraq;
| | - Zainab N. Jaf
- Department of Physics, College of Education for Pure Science, Ibn Al-Haitham, University of Baghdad, Baghdad 10071, Iraq;
| | - Mohammednoor Altarawneh
- Department of Chemical and Petroleum Engineering, United Arab Emirates University, Sheikh Khalifa Bin Zayed Street, Al-Ain 15551, United Arab Emirates
| | - Zhong-Tao Jiang
- Surface Analysis and Materials Engineering Research Group, College of Science, Health, Engineering and Education, Murdoch University, Murdoch, WA 6150, Australia;
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Bakkiyaraj R, Subramanian R, Balakrishnan M, Ravichandran K. Biofabrication of CeO 2 nanoparticles, characterization, photocatalytic, and biological activities. INORG NANO-MET CHEM 2021. [DOI: 10.1080/24701556.2021.1983841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- R. Bakkiyaraj
- Department of Physics, Government College of Engineering, Bargur, Tamil Nadu, India
| | - Ramasamy Subramanian
- PG & Research Department of Chemistry, Sun Arts and Science College, Tiruvannamalai, Tamil Nadu, India
| | - M. Balakrishnan
- PG & Research Department of Physics, Government Arts College, Thiruvannamalai, Tamil Nadu, India
| | - K. Ravichandran
- Materials Science Centre, Department of Nuclear Physics, University of Madras, Chennai, Tamil Nadu, India
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Abdel-Rafei MK, Thabet NM, Abdel Maksoud MIA, Abd Elkodous M, Kawamura G, Matsuda A, Ashour AH, El-Batal AI, El-Sayyad GS. Influence of Ce 3+ Substitution on Antimicrobial and Antibiofilm Properties of ZnCe xFe 2-xO 4 Nanoparticles (X = 0.0, 0.02, 0.04, 0.06, and 0.08) Conjugated with Ebselen and Its Role Subsidised with γ-Radiation in Mitigating Human TNBC and Colorectal Adenocarcinoma Proliferation In Vitro. Int J Mol Sci 2021; 22:10171. [PMID: 34576334 PMCID: PMC8466506 DOI: 10.3390/ijms221810171] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 09/15/2021] [Accepted: 09/16/2021] [Indexed: 01/13/2023] Open
Abstract
Cancers are a major challenge to health worldwide. Spinel ferrites have attracted attention due to their broad theranostic applications. This study aimed at investigating the antimicrobial, antibiofilm, and anticancer activities of ebselen (Eb) and cerium-nanoparticles (Ce-NPs) in the form of ZnCexFe2-XO4 on human breast and colon cancer cell lines. Bioassays of the cytotoxic concentrations of Eb and ZnCexFe2-XO4, oxidative stress and inflammatory milieu, autophagy, apoptosis, related signalling effectors, the distribution of cells through the cell-cycle phases, and the percentage of cells with apoptosis were evaluated in cancer cell lines. Additionally, the antimicrobial and antibiofilm potential have been investigated against different pathogenic microbes. The ZOI, and MIC results indicated that ZnCexFe2-XO4; X = 0.06 specimen reduced the activity of a wide range of bacteria and unicellular fungi at low concentration including P. aeruginosa (9.5 mm; 6.250 µg/mL), S. aureus (13.2 mm; 0.390 µg/mL), and Candida albicans (13.5 mm; 0.195 µg/mL). Reaction mechanism determination indicated that after ZnCexFe2-xO4; X = 0.06 treatment, morphological differences in S.aureus were apparent with complete lysis of bacterial cells, a concomitant decrease in the viable number, and the growth of biofilm was inhibited. The combination of Eb with ZFO or ZnCexFe2-XO4 with γ-radiation exposure showed marked anti-proliferative efficacy in both cell lines, through modulating the oxidant/antioxidant machinery imbalance, restoring the fine-tuning of redox status, and promoting an anti-inflammatory milieu to prevent cancer progression, which may be a valuable therapeutic approach to cancer therapy and as a promising antimicrobial agent to reduce the pathogenic potential of the invading microbes.
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Affiliation(s)
- Mohamed K. Abdel-Rafei
- Radiation Biology Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo 11787, Egypt;
| | - Noura M. Thabet
- Radiation Biology Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo 11787, Egypt;
| | - M. I. A. Abdel Maksoud
- Materials Science Lab., Radiation Physics Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo 11787, Egypt; (M.I.A.A.M.); (A.H.A.)
| | - M. Abd Elkodous
- Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi 441-8580, Aichi, Japan; (M.A.E.); (G.K.)
| | - Go Kawamura
- Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi 441-8580, Aichi, Japan; (M.A.E.); (G.K.)
| | - Atsunori Matsuda
- Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi 441-8580, Aichi, Japan; (M.A.E.); (G.K.)
| | - A. H. Ashour
- Materials Science Lab., Radiation Physics Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo 11787, Egypt; (M.I.A.A.M.); (A.H.A.)
| | - Ahmed I. El-Batal
- Drug Microbiology Lab., Drug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo 11787, Egypt; (A.I.E.-B.); (G.S.E.-S.)
| | - Gharieb S. El-Sayyad
- Drug Microbiology Lab., Drug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo 11787, Egypt; (A.I.E.-B.); (G.S.E.-S.)
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Channei D, Chansaenpak K, Phanichphant S, Jannoey P, Khanitchaidecha W, Nakaruk A. Synthesis and Characterization of WO 3/CeO 2 Heterostructured Nanoparticles for Photodegradation of Indigo Carmine Dye. ACS OMEGA 2021; 6:19771-19777. [PMID: 34368564 PMCID: PMC8340426 DOI: 10.1021/acsomega.1c02453] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 07/13/2021] [Indexed: 06/01/2023]
Abstract
WO3/CeO2 heterostructured nanocomposites containing different WO3 ratios (0.1, 0.3, 0.5, and 1.0 wt %) were synthesized by a precipitation method. The coupling of CeO2 and WO3 with a high specific surface area noticeably enhanced the photocatalytic activity of indigo carmine (IC) degradation under visible-light irradiation. The degradation rate constants (k) of 0.5 wt % WO3/CeO2 nanocomposites reached 4 and 5 times higher than those of CeO2 and WO3, respectively. Regarding the experimental results, the X-ray diffraction (XRD) patterns of the CeO2 spherical nanoparticles and rod-shaped WO3 were assigned to the cubic fluorite and orthorhombic phase structures, respectively. The increasing photocatalytic activity of nanocomposite samples could be attributed to the heterojunction of the photocatalysts with efficient charge separation and strong oxidative ability, which were confirmed by the photoluminescence spectra and diffuse reflectance spectrometry. The staggered heterojunction of the nanocomposite promoted efficient electron transfer and suppressed the recombination of photogenerated electrons and holes during the process.
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Affiliation(s)
- Duangdao Channei
- Department
of Chemistry, Faculty of Science, Naresuan
University, Phitsanulok 65000, Thailand
- Centre
of Excellence for Innovation and Technology for Water Treatment, Naresuan University, Phitsanulok 65000, Thailand
| | - Kantapat Chansaenpak
- National
Nanotechnology Center, National Science
and Technology Development Agency, Thailand Science Park, Pathum Thani 12120, Thailand
| | - Sukon Phanichphant
- Materials
Science Research Center, Faculty of Science, Chiang Mai University, Chiang
Mai 50200, Thailand
| | - Panatda Jannoey
- Department
of Biochemistry, Faculty of Medical Science, Naresuan University, Phitsanulok 65000, Thailand
| | - Wilawan Khanitchaidecha
- Centre
of Excellence for Innovation and Technology for Water Treatment, Naresuan University, Phitsanulok 65000, Thailand
- Department
of Civil Engineering, Faculty of Engineering, Naresuan University, Phitsanulok 65000, Thailand
| | - Auppatham Nakaruk
- Centre
of Excellence for Innovation and Technology for Water Treatment, Naresuan University, Phitsanulok 65000, Thailand
- Department
of Industrial Engineering, Faculty of Engineering, Naresuan University, Phitsanulok 65000, Thailand
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Safat S, Buazar F, Albukhaty S, Matroodi S. Enhanced sunlight photocatalytic activity and biosafety of marine-driven synthesized cerium oxide nanoparticles. Sci Rep 2021; 11:14734. [PMID: 34282244 PMCID: PMC8289931 DOI: 10.1038/s41598-021-94327-w] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 07/09/2021] [Indexed: 02/06/2023] Open
Abstract
This contribution presents the biosynthesis, physiochemical properties, toxicity and photocatalytic activity of biogenic CeO2 NPs using, for the first time, marine oyster extract as an effective and rich source of bioreducing and capping/stabilizing agents in a one-pot recipe. CeO2 NPs formation was initially confirmed through the color change from light green to pale yellow and subsequently, their corresponding absorption peak was spectroscopically determined at 310 nm with an optical band-gap of 4.67 eV using the DR-UV technique. Further, XRD and Raman analyses indicated that nanoceria possessed face-centered cubic arrangements without any impurities, having an average crystallite size of 10 nm. TEM and SEM results revealed that biogenic CeO2 NPs was approximately spherical in shape with a median particle size of 15 ± 1 nm. The presence of various bioorganic substances on the surface of nanoparticles was deduced by FTIR and TGA results. It is found that marine-based nanoceria shows no cytotoxic effect on the normal cell, thus indicating their enhanced biocompatibility and biosafety to living organisms. Environmentally, due to energy band gap, visible light-activated CeO2 nanocatalyst revealed superior photocatalytic performance on degradation of methylene blue pollutant with removal rate of 99%. Owing to the simplicity, cost-effectiveness, and environmentally friendly nature, this novel marine biosynthetic route paves the way for prospective applications of nanoparticles in various areas.
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Affiliation(s)
- Somayeh Safat
- grid.484402.e0000 0004 0440 6745Department of Marine Chemistry, Khorramshahr University of Marine Science and Technology, P.O. Box 669, Khorramshahr, Iran
| | - Foad Buazar
- grid.484402.e0000 0004 0440 6745Department of Marine Chemistry, Khorramshahr University of Marine Science and Technology, P.O. Box 669, Khorramshahr, Iran
| | - Salim Albukhaty
- grid.449919.80000 0004 1788 7058Department of Chemistry, University of Misan, P.O. Box 62001, Maysan, Iraq
| | - Soheila Matroodi
- grid.484402.e0000 0004 0440 6745Department of Marine Biology, Khorramshahr University of Marine Science and Technology, P.O. Box 669, Khorramshahr, Iran
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Comparison of Three Catalytic Processes in Degradation of HPAM by tBu-TPyzPzCo. Catalysts 2021. [DOI: 10.3390/catal11020181] [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
The present study describes a two-step synthesis process for the cobalt complex of tetra-2,3-(5,6-di-tert-butyl-pyrazino) porphyrazine (tBu-TPyzPzCo). The product was ultrasonically impregnated onto carbon black (CB) to prepare a supported catalyst (tBu-TPyzPzCo/CB). We built a split photoelectric catalytic device to test the performance of photocatalytic, electrocatalytic and photoelectrocatalytic degradation of partially hydrolyzed polyacrylamide (HPAM). The results confirm that HPAM exhibited more efficient degradation in the presence of a supporting catalyst using the photoelectrocatalytic process than by photocatalytic or electrocatalytic oxidation—or even the sum of the two in saline water. The photoelectrocatalytic reaction confirmed that the process conforms to quasi-first order reaction kinetics, while the reaction rate constants were 6.03 times that of photocatalysis and 3.97 times that of electrocatalysis. We also compared the energy consumption of the three processes and found that the photoelectrocatalytic process has the highest energy efficiency.
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