1
|
Zubair M, Ahad SA, Amiinu IS, Lebedev VA, Mishra M, Geaney H, Singh S, Ryan KM. Colloidal synthesis of the mixed ionic-electronic conducting NaSbS 2 nanocrystals. NANOSCALE HORIZONS 2023; 8:1262-1272. [PMID: 37404207 DOI: 10.1039/d3nh00097d] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/06/2023]
Abstract
Solution-based synthesis of mixed ionic and electronic conductors (MIECs) has enabled the development of novel inorganic materials with implications for a wide range of energy storage applications. However, many technologically relevant MIECs contain toxic elements (Pb) or are prepared by using traditional high-temperature solid-state synthesis. Here, we provide a simple, low-temperature and size-tunable (50-90 nm) colloidal hot injection approach for the synthesis of NaSbS2 based MIECs using widely available and non-toxic precursors. Key synthetic parameters (cationic precursor, reaction temperature, and ligand) are examined to regulate the shape and size of the NaSbS2 nanocrystals (NCs). FTIR studies revealed that ligands with carboxylate functionality are coordinated to the surface of the synthesized NaSbS2 NCs. The synthesized NaSbS2 nanocrystals have electronic and ionic conductivities of 3.31 × 10-10 (e-) and 1.9 × 10-5 (Na+) S cm-1 respectively, which are competitive with the ionic and electrical conductivities of perovskite materials generated by solid-state reactions. This research gives a mechanistic understanding and post-synthetic evaluation of parameters influencing the formation of sodium antimony chalcogenides materials.
Collapse
Affiliation(s)
- Maria Zubair
- Department of Chemical Sciences and Bernal Institute, University of Limerick, Limerick, Ireland.
| | - Syed Abdul Ahad
- Department of Chemical Sciences and Bernal Institute, University of Limerick, Limerick, Ireland.
| | - Ibrahim Saana Amiinu
- Department of Chemical Sciences and Bernal Institute, University of Limerick, Limerick, Ireland.
| | - Vasily A Lebedev
- Department of Chemical Sciences and Bernal Institute, University of Limerick, Limerick, Ireland.
| | - Mohini Mishra
- Department of Chemical Sciences and Bernal Institute, University of Limerick, Limerick, Ireland.
| | - Hugh Geaney
- Department of Chemical Sciences and Bernal Institute, University of Limerick, Limerick, Ireland.
| | - Shalini Singh
- Department of Chemical Sciences and Bernal Institute, University of Limerick, Limerick, Ireland.
| | - Kevin M Ryan
- Department of Chemical Sciences and Bernal Institute, University of Limerick, Limerick, Ireland.
| |
Collapse
|
2
|
Sanchez-Lievanos K, Knowles KE. Controlling Cation Distribution and Morphology in Colloidal Zinc Ferrite Nanocrystals. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2022; 34:7446-7459. [PMID: 36039100 PMCID: PMC9417087 DOI: 10.1021/acs.chemmater.2c01568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/19/2022] [Indexed: 06/15/2023]
Abstract
This paper describes the first synthetic method to achieve independent control over both the cation distribution (quantified by the inversion parameter x) and size of colloidal ZnFe2O4 nanocrystals. Use of a heterobimetallic triangular complex of formula ZnFe2(μ3-O)(μ2-O2CCF3)6(H2O)3 as a single-source precursor, solvothermal reaction conditions, absence of hydroxyl groups from the reaction solvent, and the presence of oleylamine are required to achieve well-defined, crystalline, and monodisperse ZnFe2O4 nanoparticles. The size of the ZnFe2O4 nanocrystals increases as the ratio of oleic acid and oleylamine ligands to precursor increases. The inversion parameter increases with increasing solubility of the precursor in the reaction solvent, with the presence of oleic acid in the reaction mixture, and with decreasing reaction temperature. These results are consistent with a mechanism in which ligand exchange between oleic acid and carboxylate ligands bound to the precursor complex influences the degree to which the reaction produces a kinetically trapped or thermodynamically stable cation distribution. Importantly, these results indicate that preservation of the triangular Zn-O-Fe2 core structure of the precursor in the reactive monomer species is crucial to the production of a phase-pure ZnFe2O4 product and to the ability to tune the cation distribution. Overall, these results demonstrate the advantages of using a single-source precursor and solvothermal reaction conditions to achieve synthetic control over the structure of ternary spinel ferrite nanocrystals.
Collapse
|
3
|
Beidelman BA, Zhang X, Sanchez-Lievanos KR, Selino AV, Matson EM, Knowles KE. Influence of water concentration on the solvothermal synthesis of VO 2(B) nanocrystals. CrystEngComm 2022. [DOI: 10.1039/d2ce00813k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phase and length control of VO2(B) nanocrystals afforded by manipulating the ratio of toluene to water.
Collapse
Affiliation(s)
| | - Xiaotian Zhang
- Department of Chemistry, University of Rochester, Rochester, NY 14627, USA
| | | | - Annabel V. Selino
- Department of Chemistry, University of Rochester, Rochester, NY 14627, USA
| | - Ellen M. Matson
- Department of Chemistry, University of Rochester, Rochester, NY 14627, USA
| | - Kathryn E. Knowles
- Department of Chemistry, University of Rochester, Rochester, NY 14627, USA
| |
Collapse
|
4
|
Brewster DA, Koch MD, Knowles KE. Evaluation of electrochemical properties of nanostructured metal oxide electrodes immersed in redox-inactive organic media. Phys Chem Chem Phys 2021; 23:17904-17916. [PMID: 34378559 DOI: 10.1039/d1cp02370e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper describes analysis of dropcast nanocrystalline and electrochemically deposited films of NiO and α-Fe2O3 as model metal oxide semiconductors immersed in redox-inactive organic electrolyte solutions using electrochemical impedance spectroscopy (EIS). Although the data reported here fit a circuit commonly used to model EIS data of metal oxide electrodes, which comprises an RC circuit nested inside a second RC circuit that is in series with a resistor, our interpretation of the physical meaning of these circuit elements differs from that applied to EIS measurements of metal oxide electrodes immersed in redox-active media. The data presented here are most consistent with an interpretation in which the nested RC circuit represents charge transfer between the metal oxide film and the underlying metal electrode, and the non-nested RC circuit represents the resistance and capacitance associated with formation of a charge-compensating double-layer at the exposed interface between the metal electrode and electrolyte solution. Applying this interpretation to analysis of EIS data collected for metal oxide films in organic media enables the impact of film morphology on electrochemical behavior to be distinguished from the effects of the intrinsic electronic structure of the metal oxide. This distinction is crucial to the evaluation of nanostructured metal oxide electrodes for electrochemical energy storage and electrocatalysis applications.
Collapse
Affiliation(s)
- David A Brewster
- Department of Chemistry, University of Rochester, Rochester, NY 14627, USA.
| | | | | |
Collapse
|
5
|
Sanchez-Lievanos KR, Stair JL, Knowles KE. Cation Distribution in Spinel Ferrite Nanocrystals: Characterization, Impact on their Physical Properties, and Opportunities for Synthetic Control. Inorg Chem 2021; 60:4291-4305. [PMID: 33734686 DOI: 10.1021/acs.inorgchem.1c00040] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Metal oxide materials that adopt the spinel crystal structure, such as metal ferrites (MFe2O4), present tetrahedral (A) and octahedral [B] sublattice sites surrounded by oxygen anions that provide a relatively weak crystal-field splitting. The formula of a metal ferrite material is most precisely described as (M1-xFex)[MxFe2-x]O4, where the parentheses and square brackets denote the tetrahedral and octahedral sites, respectively, and x is the inversion parameter quantifying the distribution of M2+ and Fe3+ cations among these sites. The electronic, magnetic, and optical properties of spinel ferrites all depend on the magnitude of x, which, in turn, depends on the relative sizes of the cations, their charge, and the relative crystal-field stabilization afforded by tetrahedral or octahedral coordination. Compared to bulk spinel ferrites, the large surface-area-to-volume ratio of spinel ferrite nanocrystals provides additional structural degrees of freedom that enable access to a broader range of x values. Achieving synthetic control over the degree of inversion in addition to the size and shape is critical to tuning the properties of spinel ferrite nanocrystals. In this Forum Article, we review physical inorganic methods used to quantify x in spinel ferrite nanocrystals, describe how the electronic, magnetic, and optical properties of these nanocrystals depend on x, and discuss emerging strategies for achieving synthetic control over this parameter.
Collapse
Affiliation(s)
| | - James L Stair
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Kathryn E Knowles
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| |
Collapse
|
6
|
Wu S, Du J, Xiang Q, Zhao D, Bai Y. Solvothermal synthesis of α-Fe 2O 3 polyhedrons and its application in an immunochromatographic strip test for the detection of foodborne pathogen Listeria monocytogenes. NANOTECHNOLOGY 2021; 32:085502. [PMID: 33202394 DOI: 10.1088/1361-6528/abcb30] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The immunochromatographic strip test (ICST) is a powerful on-site detection technology due to its unique advantages of simplicity, rapidity, and readability by the naked eye. Here we illustrate the potential of α-Fe2O3 polyhedrons as a novel visual label, which exhibit advantages of high stability and economy, for the detection of Listeria monocytogenes (L. monocytogenes) as a model foodborne pathogen. A low-cost and simple one-step solvothermal approach was developed for the synthesis of α-Fe2O3 polyhedrons; the average diameter of the α-Fe2O3 polyhedrons is about 200 nm. The crystal structure and morphology of α-Fe2O3 polyhedrons were characterized by x-ray diffraction and transmission electron microscope. α-Fe2O3 polyhedrons were immunized with anti-L. monocytogenes antibody to prepare an antibody-colloidal α-Fe2O3 polyhedron ICST. Visual detection can be obtained directly by the naked eye within 10 min. The detection limit of L. monocytogenes by α-Fe2O3 polyhedron ICST assay was 3.8 × 106 and 5.6 × 106 CFU/ml of pure culture and artificially spiked orange juice drink sample, respectively. Results indicated that the antibody-colloidal α-Fe2O3 polyhedron ICST is a rapid, simple, and low-cost assay. This approach showed great potential in the application of foodborne pathogen detection concerning food safety.
Collapse
Affiliation(s)
- Shujing Wu
- College of Food and Biological Engineering, Henan Key Laboratory of Cold Chain Food Quality and Safety Control, Henan collaborative Innovation Center of Food Production and Safety, Zhengzhou University of Light Industry, Zhengzhou, 450001, People's Republic of China
| | - Juan Du
- College of Food and Biological Engineering, Henan Key Laboratory of Cold Chain Food Quality and Safety Control, Henan collaborative Innovation Center of Food Production and Safety, Zhengzhou University of Light Industry, Zhengzhou, 450001, People's Republic of China
| | - Qisen Xiang
- College of Food and Biological Engineering, Henan Key Laboratory of Cold Chain Food Quality and Safety Control, Henan collaborative Innovation Center of Food Production and Safety, Zhengzhou University of Light Industry, Zhengzhou, 450001, People's Republic of China
| | - Dianbo Zhao
- College of Food and Biological Engineering, Henan Key Laboratory of Cold Chain Food Quality and Safety Control, Henan collaborative Innovation Center of Food Production and Safety, Zhengzhou University of Light Industry, Zhengzhou, 450001, People's Republic of China
| | - Yanhong Bai
- College of Food and Biological Engineering, Henan Key Laboratory of Cold Chain Food Quality and Safety Control, Henan collaborative Innovation Center of Food Production and Safety, Zhengzhou University of Light Industry, Zhengzhou, 450001, People's Republic of China
| |
Collapse
|
7
|
Avasthi A, Caro C, Pozo-Torres E, Leal MP, García-Martín ML. Magnetic Nanoparticles as MRI Contrast Agents. Top Curr Chem (Cham) 2020; 378:40. [PMID: 32382832 PMCID: PMC8203530 DOI: 10.1007/s41061-020-00302-w] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 03/18/2020] [Indexed: 12/14/2022]
Abstract
Iron oxide nanoparticles (IONPs) have emerged as a promising alternative to conventional contrast agents (CAs) for magnetic resonance imaging (MRI). They have been extensively investigated as CAs due to their high biocompatibility and excellent magnetic properties. Furthermore, the ease of functionalization of their surfaces with different types of ligands (antibodies, peptides, sugars, etc.) opens up the possibility of carrying out molecular MRI. Thus, IONPs functionalized with epithelial growth factor receptor antibodies, short peptides, like RGD, or aptamers, among others, have been proposed for the diagnosis of various types of cancer, including breast, stomach, colon, kidney, liver or brain cancer. In addition to cancer diagnosis, different types of IONPs have been developed for other applications, such as the detection of brain inflammation or the early diagnosis of thrombosis. This review addresses key aspects in the development of IONPs for MRI applications, namely, synthesis of the inorganic core, functionalization processes to make IONPs biocompatible and also to target them to specific tissues or cells, and finally in vivo studies in animal models, with special emphasis on tumor models.
Collapse
Affiliation(s)
- Ashish Avasthi
- BIONAND - Centro Andaluz de Nanomedicina y Biotecnología, Junta de Andalucía-Universidad de Málaga, C/Severo Ochoa, 35, 29590, Málaga, Spain
| | - Carlos Caro
- BIONAND - Centro Andaluz de Nanomedicina y Biotecnología, Junta de Andalucía-Universidad de Málaga, C/Severo Ochoa, 35, 29590, Málaga, Spain
| | - Esther Pozo-Torres
- Departamento de Química Orgánica y Farmacéutica, Facultad de Farmacia, Universidad de Sevilla, 41012, Seville, Spain
| | - Manuel Pernia Leal
- Departamento de Química Orgánica y Farmacéutica, Facultad de Farmacia, Universidad de Sevilla, 41012, Seville, Spain.
| | - María Luisa García-Martín
- BIONAND - Centro Andaluz de Nanomedicina y Biotecnología, Junta de Andalucía-Universidad de Málaga, C/Severo Ochoa, 35, 29590, Málaga, Spain. .,Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, Málaga, Spain.
| |
Collapse
|
8
|
Sanchez-Lievanos KR, Tariq M, Brennessel WW, Knowles KE. Heterometallic trinuclear oxo-centered clusters as single-source precursors for synthesis of stoichiometric monodisperse transition metal ferrite nanocrystals. Dalton Trans 2020; 49:16348-16358. [DOI: 10.1039/d0dt01369b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Solvothermal reactions of MIIFe2III(μ3-O)(μ2-O2CR)6(H2O)3 (R = CF3, M = Fe, Co, Ni, Cu, Zn) clusters produce monodisperse, phase-pure MFe2O4 nanocrystals.
Collapse
Affiliation(s)
| | - Mehrin Tariq
- Department of Chemistry
- University of Rochester
- Rochester
- USA
| | | | | |
Collapse
|