1
|
Wang M, Wang Y, Fu Q. Magneto-optical nanosystems for tumor multimodal imaging and therapy in-vivo. Mater Today Bio 2024; 26:101027. [PMID: 38525310 PMCID: PMC10959709 DOI: 10.1016/j.mtbio.2024.101027] [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: 01/19/2024] [Revised: 03/11/2024] [Accepted: 03/13/2024] [Indexed: 03/26/2024] Open
Abstract
Multimodal imaging, which combines the strengths of two or more imaging modalities to provide complementary anatomical and molecular information, has emerged as a robust technology for enhancing diagnostic sensitivity and accuracy, as well as improving treatment monitoring. Moreover, the application of multimodal imaging in guiding precision tumor treatment can prevent under- or over-treatment, thereby maximizing the benefits for tumor patients. In recent years, several intriguing magneto-optical nanosystems with both magnetic and optical properties have been developed, leading to significant breakthroughs in the field of multimodal imaging and image-guided tumor therapy. These advancements pave the way for precise tumor medicine. This review summarizes various types of magneto-optical nanosystems developed recently and describes their applications as probes for multimodal imaging and agents for image-guided therapeutic interventions. Finally, future research and development prospects of magneto-optical nanosystems are discussed along with an outlook on their further applications in the biomedical field.
Collapse
Affiliation(s)
- Mengzhen Wang
- Institute for Translational Medicine, College of Medicine, Qingdao University, Qingdao, 266021, China
| | - Yin Wang
- Key Laboratory of Birth Regulation and Control Technology of National Health Commission of China, Maternal and Child Health Care Hospital of Shandong Province Affiliated to Qingdao University, Qingdao University, Jinan, 250014, China
- Institute for Translational Medicine, College of Medicine, Qingdao University, Qingdao, 266021, China
| | - Qinrui Fu
- Key Laboratory of Birth Regulation and Control Technology of National Health Commission of China, Maternal and Child Health Care Hospital of Shandong Province Affiliated to Qingdao University, Qingdao University, Jinan, 250014, China
- Institute for Translational Medicine, College of Medicine, Qingdao University, Qingdao, 266021, China
| |
Collapse
|
2
|
Shahbazi R, Behbahani FK. Synthesis, modifications, and applications of iron-based nanoparticles. Mol Divers 2024:10.1007/s11030-023-10801-9. [PMID: 38740610 DOI: 10.1007/s11030-023-10801-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Accepted: 12/22/2023] [Indexed: 05/16/2024]
Abstract
Magnetic nanoparticles (MNPs) are appealing materials as assistant to resolve environmental pollution issues and as recyclable catalysts for the oxidative degradation of resistant contaminants. Moreover, they can significantly influence the advancement of medical applications for imaging, diagnostics, medication administration, and biosensing. On the other hand, due to unique features, excellent biocompatibility, high curie temperatures and low cytotoxicity of the Iron-based nanoparticles, they have received increasing attention in recent years. Using an external magnetic field, in which the ferrite magnetic nanoparticles (FMNPs) in the reaction mixtures can be easily removed, make them more efficient approach than the conventional method for separating the catalyst particles by centrifugation or filtration. Ferrite magnetic nanoparticles (FMNPs) provide various advantages in food processing, environmental issues, pharmaceutical industry, sample preparation, wastewater management, water purification, illness therapy, identification of disease, tissue engineering, and biosensor creation for healthcare monitoring. Modification of FMNPs with the proper functional groups and surface modification techniques play a significant role in boosting their capability. Due to flexibility of FMNPs in functionalization and synthesis, it is possible to make customized FMNPs that can be utilized in variety of applications. This review focuses on synthesis, modifications, and applications of Iron-based nanoparticles.
Collapse
Affiliation(s)
- Raheleh Shahbazi
- Department of Chemistry, Karaj Branch, Islamic Azad University, Karaj, Iran
| | | |
Collapse
|
3
|
Zhu P, Zhou L, Lin Y, Wang Y, Han Y, Cai S. A magnetic beads-based ligand fishing method Coupled with UHPLC-QTOF MS for screening and identification of α-glucosidase inhibitors from Houttuynia cordata Thunb. Talanta 2024; 270:125583. [PMID: 38141464 DOI: 10.1016/j.talanta.2023.125583] [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: 08/22/2023] [Revised: 11/21/2023] [Accepted: 12/20/2023] [Indexed: 12/25/2023]
Abstract
In this study, a method for the screening and identification of α-glucosidase inhibitors from natural products was developed. The α-glucosidase was immobilized on carboxyl terminated magnetic beads to form a ligand fishing system to screen the potential inhibitors. A total of 9 compounds were fishing out from the crude Houttuynia cordata Thunb. extract. Meanwhile, ultra-high performance liquid chromatography quadrupole time-of-flight mass spectrometry (UHPLC-QTOF MS) was used for the identification of the chemical structures, including 3 chlorogenic acid isomers, 2 flavone C-glycosides and 4 flavone O-glycosides. The combination of enzyme immobilization magnetic beads and UHPLC-QTOF MS could be used for the screening of bioactive multi-components from herbs with appropriate targets. Taking the advantage of the specificity of enzyme binding and the convenience of magnetic separation, the method has great potential for rapid screening of α-glucosidase inhibitors from complicated natural product extracts.
Collapse
Affiliation(s)
- Peixi Zhu
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China.
| | - Luxi Zhou
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China
| | - Yuxiu Lin
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China
| | - Yixi Wang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China
| | - Yu Han
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310030, Zhejiang, China; Jinhua Institute of Zhejiang University, Jinhua 321299, China
| | - Sheng Cai
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310030, Zhejiang, China; Jinhua Institute of Zhejiang University, Jinhua 321299, China.
| |
Collapse
|
4
|
Ndlovu NL, Mdlalose WB, Ntsendwana B, Moyo T. Evaluation of Advanced Nanomaterials for Cancer Diagnosis and Treatment. Pharmaceutics 2024; 16:473. [PMID: 38675134 PMCID: PMC11054857 DOI: 10.3390/pharmaceutics16040473] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 03/04/2024] [Accepted: 03/25/2024] [Indexed: 04/28/2024] Open
Abstract
Cancer is a persistent global disease and a threat to the human species, with numerous cases reported every year. Over recent decades, a steady but slowly increasing mortality rate has been observed. While many attempts have been made using conventional methods alone as a theragnostic strategy, they have yielded very little success. Most of the shortcomings of such conventional methods can be attributed to the high demands of industrial growth and ever-increasing environmental pollution. This requires some high-tech biomedical interventions and other solutions. Thus, researchers have been compelled to explore alternative methods. This has brought much attention to nanotechnology applications, specifically magnetic nanomaterials, as the sole or conjugated theragnostic methods. The exponential growth of nanomaterials with overlapping applications in various fields is due to their potential properties, which depend on the type of synthesis route used. Either top-down or bottom-up strategies synthesize various types of NPs. The top-down only branches out to one method, i.e., physical, and the bottom-up has two methods, chemical and biological syntheses. This review highlights some synthesis techniques, the types of nanoparticle properties each technique produces, and their potential use in the biomedical field, more specifically for cancer. Despite the evident drawbacks, the success achieved in furthering nanoparticle applications to more complex cancer stages and locations is unmatched.
Collapse
Affiliation(s)
- Nkanyiso L. Ndlovu
- Discipline of Physics, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa
| | - Wendy B. Mdlalose
- Discipline of Physics, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa
| | - Bulelwa Ntsendwana
- DSI/Mintek Nanotechnology Innovation Centre, Advanced Materials Division, Mintek, Private Bag X3015, Randburg, Johannesburg 2125, South Africa
| | - Thomas Moyo
- Discipline of Physics, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa
| |
Collapse
|
5
|
Ivanova P, Drozd M, Michrowski K, Karoń S, Mazurkiewicz-Pawlicka M, Pietrzak M. Au-X (X=Pt/Ru)-decorated magnetic nanocubes as bifunctional nanozyme labels in colorimetric, magnetically-enhanced, one-step sandwich CRP immunoassay. Biosens Bioelectron 2023; 237:115511. [PMID: 37429147 DOI: 10.1016/j.bios.2023.115511] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 06/30/2023] [Accepted: 07/01/2023] [Indexed: 07/12/2023]
Abstract
Scientific interest in the investigation and application of multifunctional nanomaterials in medical diagnostics has been increasing. The employment of magnetocatalytic immunoconjugates as both analyte-capturing agents and enzyme-like catalytic labels may enable rapid preconcentration and determination of relevant antigens. In this work, we synthesized and comprehensively characterized two types of noble metal-decorated magnetic nanocubes (MDMCs) which were subsequently applied in the one-step, sandwich nanozyme-linked immunosorbent assay (NLISA). Magnetic cores allow for rapid separation from complex samples of biological origin. The catalytically active shell composed of Au-decorated Pt or Ru can effectively mimic the activity of horseradish peroxididase, retaining at the same time the ability to form stable bioconstructs through self-assembly of thiolated ligands. As a result, hybrid multifunctional nanoparticles were synthesized and used to detect C-reactive protein (CRP) in serum samples. We have also paid considerable attention to the mechanistic studies of the formation of sandwich immunocomplexes with nanoparticle labels by means of immunoenzymatic methods and surface plasmon resonance. Analytical parameters of the Pt-MDMCs-labeled NLISA (detection limit LOD = 0.336 ng mL-1, recovery = 98.0%, linear response window covering two logarithmic units) turned out to be superior to the classical, one-step ELISA based on a horseradish peroxidase. In addition, our method offers further possibility of sensitivity adjustment by changing the parameters of magnetic preconcentration, together with good long-term stability of MDMCs conjugates and their good resistance to common interferences. We believe that the proposed simple synthetic protocol will guide a new approach to applying metal-decorated magnetic nanozymes as versatile and multifunctional labels for application in subsequent pre-analytical analyte concentration and immunoassays towards clinical applications.
Collapse
Affiliation(s)
- Polina Ivanova
- Department of Medical Diagnostics, Centre for Advanced Materials and Technologies CEZAMAT, Warsaw University of Technology, Poleczki 19, 02-822, Warsaw, Poland; Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Stanisława Noakowskiego 3, 00-664, Warsaw, Poland; Section of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Warsaw, Ludwika Pasteura 1, 02-093, Warsaw, Poland
| | - Marcin Drozd
- Department of Medical Diagnostics, Centre for Advanced Materials and Technologies CEZAMAT, Warsaw University of Technology, Poleczki 19, 02-822, Warsaw, Poland; Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Stanisława Noakowskiego 3, 00-664, Warsaw, Poland
| | - Kamil Michrowski
- Department of Medical Diagnostics, Centre for Advanced Materials and Technologies CEZAMAT, Warsaw University of Technology, Poleczki 19, 02-822, Warsaw, Poland
| | - Sylwia Karoń
- Department of Medical Diagnostics, Centre for Advanced Materials and Technologies CEZAMAT, Warsaw University of Technology, Poleczki 19, 02-822, Warsaw, Poland; Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Stanisława Noakowskiego 3, 00-664, Warsaw, Poland
| | - Marta Mazurkiewicz-Pawlicka
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Ludwika Waryńskiego 1, 00-645, Warsaw, Poland
| | - Mariusz Pietrzak
- Department of Medical Diagnostics, Centre for Advanced Materials and Technologies CEZAMAT, Warsaw University of Technology, Poleczki 19, 02-822, Warsaw, Poland; Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Stanisława Noakowskiego 3, 00-664, Warsaw, Poland.
| |
Collapse
|
6
|
Ahmad A, Imran M, Ahsan H. Biomarkers as Biomedical Bioindicators: Approaches and Techniques for the Detection, Analysis, and Validation of Novel Biomarkers of Diseases. Pharmaceutics 2023; 15:1630. [PMID: 37376078 DOI: 10.3390/pharmaceutics15061630] [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: 03/24/2023] [Revised: 05/24/2023] [Accepted: 05/29/2023] [Indexed: 06/29/2023] Open
Abstract
A biomarker is any measurable biological moiety that can be assessed and measured as a potential index of either normal or abnormal pathophysiology or pharmacological responses to some treatment regimen. Every tissue in the body has a distinct biomolecular make-up, which is known as its biomarkers, which possess particular features, viz., the levels or activities (the ability of a gene or protein to carry out a particular body function) of a gene, protein, or other biomolecules. A biomarker refers to some feature that can be objectively quantified by various biochemical samples and evaluates the exposure of an organism to normal or pathological procedures or their response to some drug interventions. An in-depth and comprehensive realization of the significance of these biomarkers becomes quite important for the efficient diagnosis of diseases and for providing the appropriate directions in case of multiple drug choices being presently available, which can benefit any patient. Presently, advancements in omics technologies have opened up new possibilities to obtain novel biomarkers of different types, employing genomic strategies, epigenetics, metabolomics, transcriptomics, lipid-based analysis, protein studies, etc. Particular biomarkers for specific diseases, their prognostic capabilities, and responses to therapeutic paradigms have been applied for screening of various normal healthy, as well as diseased, tissue or serum samples, and act as appreciable tools in pharmacology and therapeutics, etc. In this review, we have summarized various biomarker types, their classification, and monitoring and detection methods and strategies. Various analytical techniques and approaches of biomarkers have also been described along with various clinically applicable biomarker sensing techniques which have been developed in the recent past. A section has also been dedicated to the latest trends in the formulation and designing of nanotechnology-based biomarker sensing and detection developments in this field.
Collapse
Affiliation(s)
- Anas Ahmad
- Julia McFarlane Diabetes Research Centre (JMDRC), Department of Microbiology, Immunology and Infectious Diseases, Snyder Institute for Chronic Diseases, Hotchkiss Brain Institute, Cumming School of Medicine, Foothills Medical Centre, University of Calgary, Calgary, AB T2N 4N1, Canada
| | - Mohammad Imran
- Therapeutics Research Group, Frazer Institute, Faculty of Medicine, University of Queensland, Brisbane 4102, Australia
| | - Haseeb Ahsan
- Department of Biochemistry, Faculty of Dentistry, Jamia Millia Islamia, New Delhi 110025, India
| |
Collapse
|
7
|
Influence of Ce3+ (Rare Earth Element) on the Structural, Morphological, Impedance, Binding Energy and Ferrimagnetic Properties of Spinel ZnFe2O4 Nanoparticles Fabricated by the Coprecipitation Method: Antibacterial Activity. CHEMISTRY AFRICA 2022. [DOI: 10.1007/s42250-022-00570-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
8
|
Šuljagić M, Stanković D, Mirković M, Pavlović V, Petronijević I, Jeremić D, Andjelković L. Novel Solid-State Approach to Nickel Ferrite Electrocatalyst for the Detection of Gallic Acid. RUSS J INORG CHEM+ 2022. [DOI: 10.1134/s003602362260201x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
9
|
Mohammadpour-Haratbar A, Zare Y, Rhee KY. Electrochemical biosensors based on polymer nanocomposites for detecting breast cancer: Recent progress and future prospects. Adv Colloid Interface Sci 2022; 309:102795. [DOI: 10.1016/j.cis.2022.102795] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 10/03/2022] [Accepted: 10/03/2022] [Indexed: 12/13/2022]
|
10
|
Campanile R, Acunzo A, Scardapane E, Minopoli A, Martins VC, Di Girolamo R, Cardoso S, Velotta R, Della Ventura B, Iannotti V. Multifunctional Core@Satellite Magnetic Particles for Magnetoresistive Biosensors. ACS OMEGA 2022; 7:36543-36550. [PMID: 36278054 PMCID: PMC9583337 DOI: 10.1021/acsomega.2c04442] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 09/07/2022] [Indexed: 06/16/2023]
Abstract
Magnetoresistive (MR) biosensors combine distinctive features such as small size, low cost, good sensitivity, and propensity to be arrayed to perform multiplexed analysis. Magnetic nanoparticles (MNPs) are the ideal target for this platform, especially if modified not only to overcome their intrinsic tendency to aggregate and lack of stability but also to realize an interacting surface suitable for biofunctionalization without strongly losing their magnetic response. Here, we describe an MR biosensor in which commercial MNP clusters were coated with gold nanoparticles (AuNPs) and used to detect human IgG in water using an MR biochip that comprises six sensing regions, each one containing five U-shaped spin valve sensors. The isolated AuNPs (satellites) were stuck onto an aggregate of individual iron oxide crystals (core) so that the resulting core@satellite magnetic particles (CSMPs) could be functionalized by the photochemical immobilization technique-an easy procedure that leads to oriented antibodies immobilized upright onto gold. The morphological, optical, hydrodynamic, magnetic, and surface charge properties of CSMPs were compared with those exhibited by the commercial MNP clusters showing that the proposed coating procedure endows the MNP clusters with stability and ductility without being detrimental to magnetic properties. Eventually, the high-performance MR biosensor allowed us to detect human IgG in water with a detection limit of 13 pM (2 ng mL-1). Given its portability, the biosensor described in this paper lends itself to a point-of-care device; moreover, the features of the MR biochip also make it suitable for multiplexed analysis.
Collapse
Affiliation(s)
- Raffaele Campanile
- Department
of Physics “E. Pancini”, University
of Naples Federico II, Via Cintia 26, 80126Naples, Italy
| | - Adriano Acunzo
- Department
of Physics “E. Pancini”, University
of Naples Federico II, Via Cintia 26, 80126Naples, Italy
| | - Emanuela Scardapane
- Department
of Physics “E. Pancini”, University
of Naples Federico II, Via Cintia 26, 80126Naples, Italy
| | - Antonio Minopoli
- Department
of Physics “E. Pancini”, University
of Naples Federico II, Via Cintia 26, 80126Naples, Italy
| | - Veronica C. Martins
- INESC—Microsistemas
e Nanotecnologias, Lisboa, Rua Alves Redol 9, 1000-049Lisbon, Portugal
| | - Rocco Di Girolamo
- Department
of Chemistry, University of Naples Federico
II, Via Cintia 26, 80126Naples, Italy
| | - Susana Cardoso
- INESC—Microsistemas
e Nanotecnologias, Lisboa, Rua Alves Redol 9, 1000-049Lisbon, Portugal
- Instituto
Superior Tecnico (IST), Universidade de Lisboa, Av. Rovisco Pais, 1649-004Lisboa, Portugal
| | - Raffaele Velotta
- Department
of Physics “E. Pancini”, University
of Naples Federico II, Via Cintia 26, 80126Naples, Italy
| | - Bartolomeo Della Ventura
- Department
of Physics “E. Pancini”, University
of Naples Federico II, Via Cintia 26, 80126Naples, Italy
| | - Vincenzo Iannotti
- Department
of Physics “E. Pancini”, University
of Naples Federico II, Via Cintia 26, 80126Naples, Italy
- CNR—SPIN
(Institute for Superconductors, Oxides and Other Innovative Materials
and Devices), Piazzale
V. Tecchio 80, 80125Naples, Italy
| |
Collapse
|
11
|
Evtugyn GA, Porfireva AV, Belyakova SV. Electrochemical DNA sensors for drug determination. J Pharm Biomed Anal 2022; 221:115058. [PMID: 36179503 DOI: 10.1016/j.jpba.2022.115058] [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: 06/27/2022] [Revised: 09/13/2022] [Accepted: 09/14/2022] [Indexed: 11/16/2022]
Abstract
In this review, recent achievements in the development of the DNA biosensors developed for the drug determination have been presented with particular emphasis to the main principles of their assembling and signal measurement approaches. The design of the DNA sensors is considered with characterization of auxiliary components and their necessity for the biosensor operation. Carbon nanomaterials, metals and their complexes as well as electropolymerized polymers are briefly described in the assembly of DNA sensors. The performance of the DNA sensors is summarized within 2017-2022 for various drugs and factors influencing the sensitivity and selectivity of the response are discussed. Special attention is paid to the mechanism of the signal generation and possible drawbacks in the analysis of real samples.
Collapse
Affiliation(s)
- G A Evtugyn
- A.M. Butlerov' Chemistry Institute of Kazan Federal University, 18 Kremlevskaya Street, 420008 Kazan, Russian Federation; Analytical Chemistry Department of Chemical Technology Institute of Ural Federal University, 19 Mira Street, Ekaterinburg 620002, Russian Federation.
| | - A V Porfireva
- A.M. Butlerov' Chemistry Institute of Kazan Federal University, 18 Kremlevskaya Street, 420008 Kazan, Russian Federation
| | - S V Belyakova
- A.M. Butlerov' Chemistry Institute of Kazan Federal University, 18 Kremlevskaya Street, 420008 Kazan, Russian Federation
| |
Collapse
|
12
|
Safenkova IV, Burkin KM, Bodulev OL, Razo SC, Ivanov AV, Zherdev AV, Dzantiev BB, Sakharov IY. Comparative study of magnetic beads and microplates as supports in heterogeneous amplified assay of miRNA-141 by using mismatched catalytic hairpin assembly reaction. Talanta 2022; 247:123535. [DOI: 10.1016/j.talanta.2022.123535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 04/08/2022] [Accepted: 05/06/2022] [Indexed: 11/16/2022]
|
13
|
Sensing performances of spinel ferrites MFe2O4 (M = Mg, Ni, Co, Mn, Cu and Zn) based electrochemical sensors: A review. Anal Chim Acta 2022; 1233:340362. [DOI: 10.1016/j.aca.2022.340362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 09/02/2022] [Accepted: 09/03/2022] [Indexed: 11/19/2022]
|
14
|
Enzyme immobilization: Implementation of nanoparticles and an insight into polystyrene as the contemporary immobilization matrix. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.05.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
15
|
Thadathil A, Kavil J, Kovummal GR, Jijil CP, Periyat P. Facile Synthesis of Polyindole/Ni 1-x Zn x Fe 2O 4 ( x = 0, 0.5, 1) Nanocomposites and Their Enhanced Microwave Absorption and Shielding Properties. ACS OMEGA 2022; 7:11473-11490. [PMID: 35415333 PMCID: PMC8992279 DOI: 10.1021/acsomega.2c00824] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 03/15/2022] [Indexed: 06/14/2023]
Abstract
The present work reports the fabrication of polyindole (PIN)/Ni1-x Zn x Fe2O4 (x = 0, 0.5, 1) nanocomposites as efficient electromagnetic wave absorbers by a facile in situ emulsion polymerization method for the first time. The samples were characterized through Fourier transform infrared spectroscopy, UV-vis spectroscopy, X-ray diffraction, thermogravimetric analysis, scanning electron microscopy, high-resolution transmission electron microscopy, and vibrating sample magnetometry. The resulting polyindole/Ni1-x Zn x Fe2O4 (x = 0, 0.5, 1) nanocomposites offer better synergism among the Ni1-x Zn x Fe2O4 nanoparticles and PIN matrix, which significantly improved impedance matching. The best impedance matching of Ni1-x Zn x Fe2O4/polyindole (x = 0, 0.5, 1) nanocomposites was sought out, and the minimum reflection loss of the composites can reach up to -33 dB. The magnetic behavior, complex permittivity, permeability, and microwave absorption properties of polyindole/Ni1-x Zn x Fe2O4 (x = 0, 0.5, 1) nanocomposites have also been studied. The microwave absorbing characteristics of these composites were investigated in the 8-12 GHz range (X band) and explained based on eddy current, natural and exchange resonance, and dielectric relaxation processes. These results provided a new idea to upgrade the performance of conventional microwave-absorbing materials based on polyindole in the future.
Collapse
Affiliation(s)
- Anjitha Thadathil
- Department
of Chemistry, University of Calicut, Thenhipalam, Kerala 673635, India
| | - Jithesh Kavil
- Department
of Chemistry, University of Calicut, Thenhipalam, Kerala 673635, India
| | - Govind Raj Kovummal
- Department
of Chemistry, Malabar Christian College, Calicut, Kerala 673001, India
| | - Chamundi P. Jijil
- Department
of Chemistry, University of Calicut, Thenhipalam, Kerala 673635, India
| | - Pradeepan Periyat
- Department
of Environmental Studies, Kannur University, Kannur, Kerala 670567, India
| |
Collapse
|
16
|
Mahajan R, Suriyanarayanan S, Nicholls IA. Improved Solvothermal Synthesis of γ-Fe 2O 3 Magnetic Nanoparticles for SiO 2 Coating. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1889. [PMID: 34443719 PMCID: PMC8398533 DOI: 10.3390/nano11081889] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 07/06/2021] [Accepted: 07/18/2021] [Indexed: 01/16/2023]
Abstract
Monodisperse magnetic γ-Fe2O3 nanoparticles (MNPs) were prepared by a simple, improved, one-pot solvothermal synthesis using SDS and PEG 6000 as double capping reagents. This double protecting layer afforded better MNP uniformity (Z average 257 ± 11.12 nm, PDI = 0.18) and colloidal stability. Materials were characterized by DLS, SEM, TEM, XPS, and XRD. The use of these MNPs in the synthesis of core-shell structures with uniform and tunable silica coatings was demonstrated, as silica coated MNPs are important for use in a range of applications, including magnetic separation and catalysis and as platforms for templated nanogel synthesis.
Collapse
Affiliation(s)
- Rashmi Mahajan
- Linnaeus University Centre for Biomaterials Chemistry, Bioorganic and Biophysical Chemistry Laboratory, Department of Chemistry and Biomedical Sciences, Linnaeus University, SE-391 82 Kalmar, Sweden;
| | - Subramanian Suriyanarayanan
- Linnaeus University Centre for Biomaterials Chemistry, Bioorganic and Biophysical Chemistry Laboratory, Department of Chemistry and Biomedical Sciences, Linnaeus University, SE-391 82 Kalmar, Sweden;
| | | |
Collapse
|