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Yu H, Liedienov N, Zatovsky I, Butenko D, Fesych I, Xu W, Song C, Li Q, Liu B, Pashchenko A, Levchenko G. The Multifunctionality of Lanthanum-Strontium Cobaltite Nanopowder: High-Pressure Magnetic Studies and Excellent Electrocatalytic Properties for OER. ACS APPLIED MATERIALS & INTERFACES 2024; 16:3605-3620. [PMID: 38207161 PMCID: PMC10811629 DOI: 10.1021/acsami.3c06413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 12/12/2023] [Accepted: 12/19/2023] [Indexed: 01/13/2024]
Abstract
Simultaneous study of magnetic and electrocatalytic properties of cobaltites under extreme conditions expands the understanding of physical and chemical processes proceeding in them with the possibility of their further practical application. Therefore, La0.6Sr0.4CoO3 (LSCO) nanopowders were synthesized at different annealing temperatures tann = 850-900 °C, and their multifunctional properties were studied comprehensively. As tann increases, the rhombohedral perovskite structure of the LSCO becomes more single-phase, whereas the average particle size and dispersion grow. Co3+ and Co4+ are the major components. It has been found that LSCO-900 shows two main Curie temperatures, TC1 and TC2, associated with a particle size distribution. As pressure P increases, average ⟨TC1⟩ and ⟨TC2⟩ increase from 253 and 175 K under ambient pressure to 268 and 180 K under P = 0.8 GPa, respectively. The increment of ⟨dTC/dP⟩ for the smaller and bigger particles is sufficiently high and equals 10 and 13 K/GPa, respectively. The magnetocaloric effect in the LSCO-900 nanopowder demonstrates an extremely wide peak δTfwhm > 50 K that can be used as one of the composite components, expanding its working temperature window. Moreover, all LSCO samples showed excellent electrocatalytic performance for the oxygen evolution reaction (OER) process (overpotentials of only 265-285 mV at a current density of 10 mA cm-2) with minimal η10 for LSCO-900. Based on the experimental data, it was concluded that the formation of a dense amorphous layer on the surface of the particles ensures high stability as a catalyst (at least 24 h) during electrolysis in 1 M KOH electrolyte.
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Affiliation(s)
- Hanlin Yu
- State
Key Laboratory of Superhard Materials, International Center of Future
Science, Jilin University, Changchun 130012, P.R. China
| | - Nikita Liedienov
- State
Key Laboratory of Superhard Materials, International Center of Future
Science, Jilin University, Changchun 130012, P.R. China
- Donetsk
Institute for Physics and Engineering named after O.O. Galkin, NASU, Kyiv 03028, Ukraine
| | - Igor Zatovsky
- F.D.
Ovcharenko Institute of Biocolloidal Chemistry, NASU, Kyiv 03142, Ukraine
| | - Denys Butenko
- Department
of Physics, Southern University of Science
and Technology, Shenzhen 518055, P.R. China
| | - Igor Fesych
- Taras
Shevchenko National University of Kyiv, Kyiv 01030 , Ukraine
- Institute
of Magnetism NASU and MESU, Kyiv 03142, Ukraine
| | - Wei Xu
- State
Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College
of Chemistry, Jilin University, Changchun 130012, P.R. China
| | - Chunrui Song
- Baicheng
Normal University, Baicheng 137099, China
| | - Quanjun Li
- State
Key Laboratory of Superhard Materials, International Center of Future
Science, Jilin University, Changchun 130012, P.R. China
| | - Bingbing Liu
- State
Key Laboratory of Superhard Materials, International Center of Future
Science, Jilin University, Changchun 130012, P.R. China
| | - Aleksey Pashchenko
- State
Key Laboratory of Superhard Materials, International Center of Future
Science, Jilin University, Changchun 130012, P.R. China
- Donetsk
Institute for Physics and Engineering named after O.O. Galkin, NASU, Kyiv 03028, Ukraine
- Institute
of Magnetism NASU and MESU, Kyiv 03142, Ukraine
| | - Georgiy Levchenko
- State
Key Laboratory of Superhard Materials, International Center of Future
Science, Jilin University, Changchun 130012, P.R. China
- Donetsk
Institute for Physics and Engineering named after O.O. Galkin, NASU, Kyiv 03028, Ukraine
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Satish M, Shashanka HM, Saha S, Haritha K, Das D, Anantharamaiah PN, Ramana CV. Effect of High-Anisotropic Co 2+ Substitution for Ni 2+ on the Structural, Magnetic, and Magnetostrictive Properties of NiFe 2O 4: Implications for Sensor Applications. ACS APPLIED MATERIALS & INTERFACES 2023; 15:15691-15706. [PMID: 36939288 DOI: 10.1021/acsami.2c23025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
This work reports on the effect of substituting a low-anisotropic and low-magnetic cation (Ni2+, 2μB) by a high-anisotropic and high-magnetic cation (Co2+, 3μB) on the crystal structure, phase, microstructure, magnetic properties, and magnetostrictive properties of NiFe2O4 (NFO). Co-substituted NFO (Ni1-xCoxFe2O4, NCFO, 0 ≤ x ≤ 1) nanomaterials were synthesized using glycine-nitrate autocombustion followed by postsynthesis annealing at 1200 °C. The X-ray diffraction measurements coupled with Rietveld refinement analyses indicate the significant effect of Co-substitution for Ni, where the lattice constant (a) exhibits a functional dependence on composition (x). The a-value increases from 8.3268 to 8.3751 Å (±0.0002 Å) with increasing the "x" value from 0 to 1 in NCFO. The a-x functional dependence is derived from the ionic-size difference between Co2+ and Ni2+, which also induces grain agglomeration, as evidenced in electron microscopy imaging. The chemical bonding of NCFO, as probed by Raman spectroscopy, reveals that Co(x)-substitution induced a red shift of the T2g(2) and A1g(1) modes, and it is attributed to the changes in the metal-oxygen bond length in the octahedral and tetrahedral sites in NCFO. X-ray photoelectron spectroscopy confirms the presence of Co2+, Ni2+, and Fe3+ chemical states in addition to the cation distribution upon Co-substitution in NFO. Chemical homogeneity and uniform distribution of Co, Ni, Fe, and O are confirmed by EDS. The magnetic parameters, saturation magnetization (MS), remnant magnetization (Mr), coercivity (HC), and anisotropy constant (K1) increased with increasing Co-content "x" in NCFO. The magnetostriction (λ) also follows a similar behavior and almost linearly varies from -33 ppm (x = 0) to -227 ppm (x = 1), which is primarily due to the high magnetocrystalline anisotropy contribution from Co2+ ions at the octahedral sites. The magnetic and magnetostriction measurements and analyses indicate the potential of NCFO for torque sensor applications. Efforts to optimize materials for sensor applications indicate that, among all of the NCFO materials, Co-substitution with x = 0.5 demonstrates high strain sensitivity (-2.3 × 10-9 m/A), which is nearly 2.5 times higher than that obtained for their intrinsic counterparts, namely, NiFe2O4 (x = 0) and CoFe2O4 (x = 1).
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Affiliation(s)
- Mudalagiriyappa Satish
- Department of Chemistry, Faculty of Mathematical and Physical Sciences, M. S. Ramaiah University of Applied Sciences, Bangalore 560058, India
| | - Hadonahalli Munegowda Shashanka
- Department of Chemistry, Faculty of Mathematical and Physical Sciences, M. S. Ramaiah University of Applied Sciences, Bangalore 560058, India
| | - Sujoy Saha
- Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
| | - Keerthi Haritha
- Environmental Science and Engineering, University of Texas at El Paso, 500 West University Avenue, El Paso, Texas 79968, United States
| | - Debabrata Das
- Center for Advanced Materials Research, University of Texas at El Paso, 500 West University Avenue, El Paso, Texas 79968, United States
- Department of Aerospace & Mechanical Engineering, University of Texas at El Paso, 500 West University Avenue, El Paso, Texas 79968, United States
| | | | - C V Ramana
- Center for Advanced Materials Research, University of Texas at El Paso, 500 West University Avenue, El Paso, Texas 79968, United States
- Department of Aerospace & Mechanical Engineering, University of Texas at El Paso, 500 West University Avenue, El Paso, Texas 79968, United States
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Chen G, Zhou Y, Fang Y, Zhao X, Shen S, Tat T, Nashalian A, Chen J. Wearable Ultrahigh Current Power Source Based on Giant Magnetoelastic Effect in Soft Elastomer System. ACS NANO 2021; 15:20582-20589. [PMID: 34817978 DOI: 10.1021/acsnano.1c09274] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In this study, we present the observation of the giant magnetoelastic effect that occurs in soft elastomer systems without the need of external magnetic fields and possesses a magnetomechanical coupling factor that is four times larger than that of traditional rigid metal-based ferromagnetic materials. To investigate the fundamental scientific principles at play, we built a linear model by using COMSOL Multiphysics, which was consistent with the experimental observations. Next, by combining the giant magnetoelastic effect with electromagnetic induction, we developed a magnetoelastic generator (MEG) for biomechanical energy conversion. The wearable MEG demonstrates an ultrahigh output current of 97.17 mA, a low internal impedance of around ∼40 Ω, and an intrinsic waterproof property. We further leveraged the wearable MEG as an ultrahigh current power source to drive a Joule-heating textile for personalized thermoregulation, which increased the temperature of the fiber-shaped resistor by 0.2 °C. The development of the wearable MEG will act as an alternative and compelling approach for on-body electricity generation and arouse a wide range of possibilities in the renewable energy community.
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Affiliation(s)
- Guorui Chen
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Yihao Zhou
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Yunsheng Fang
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Xun Zhao
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Sophia Shen
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Trinny Tat
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Ardo Nashalian
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Jun Chen
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, United States
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Huang J, Zhang X, Fu K, Wei G, Su Z. Stimulus-responsive nanomaterials under physical regulation for biomedical applications. J Mater Chem B 2021; 9:9642-9657. [PMID: 34807221 DOI: 10.1039/d1tb02130c] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Cancer is a growing threat to human beings. Traditional treatments for malignant tumors usually involve invasive means to healthy human tissues, such as surgical treatment and chemotherapy. In recent years the use of specific stimulus-responsive materials in combination with some non-contact, non-invasive stimuli can lead to better efficacy and has become an important area of research. It promises to develop personalized treatment systems for four types of physical stimuli: light, ultrasound, magnetic field, and temperature. Nanomaterials that are responsive to these stimuli can be used to enhance drug delivery, cancer treatment, and tissue engineering. This paper reviews the principles of the stimuli mentioned above, their effects on materials, and how they work with nanomaterials. For this aim, we focus on specific applications in controlled drug release, cancer therapy, tissue engineering, and virus detection, with particular reference to recent photothermal, photodynamic, sonodynamic, magnetothermal, radiation, and other types of therapies. It is instructive for the future development of stimulus-responsive nanomaterials for these aspects.
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Affiliation(s)
- Jinzhu Huang
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Xiaoyuan Zhang
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Kun Fu
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Gang Wei
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
| | - Zhiqiang Su
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China.
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