1
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Chen Y, Wang Y, Li C, Wang W, Xue X, Pan H, Che R. Integrating Sulfur Doping with a Multi-Heterointerface Fe 7S 8/NiS@C Composite for Wideband Microwave Absorption. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2401618. [PMID: 38712450 DOI: 10.1002/smll.202401618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 03/30/2024] [Indexed: 05/08/2024]
Abstract
Heterointerface engineering is presently considered a valuable strategy for enhancing the microwave absorption (MA) properties of materials via compositional modification and structural design. In this study, a sulfur-doped multi-interfacial composite (Fe7S8/NiS@C) coated with NiFe-layered double hydroxides (LDHs) is successfully prepared using a hydrothermal method and post-high-temperature vulcanization. When assembled into twisted surfaces, the NiFe-LDH nanosheets exhibit porous morphologies, improving impedance matching, and microwave scattering. Sulfur doping in composites generates heterointerfaces, numerous sulfur vacancies, and lattice defects, which facilitate the polarization process to enhance MA. Owing to the controllable heterointerface design, the unique porous structure induced multiple heterointerfaces, numerous vacancies, and defects, endowing the Fe7S8/NiS@C composite with an enhanced MA capability. In particular, the minimum reflection loss (RLmin) value reached -58.1 dB at 15.8 GHz at a thickness of 2.1 mm, and a broad effective absorption bandwidth (EAB) value of 7.3 GHz is achieved at 2.5 mm. Therefore, the Fe7S8/NiS@C composite exhibits remarkable potential as a high-efficiency MA material owing to the synergistic effects of the polarization processes, multiple scatterings, porous structures, and impedance matching.
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Affiliation(s)
- Yikun Chen
- School of Materials and Chemical Engineering, Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, 710021, China
| | - Yan Wang
- School of Materials and Chemical Engineering, Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, 710021, China
| | - Chenchen Li
- Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, 710021, China
| | - Wei Wang
- School of Materials and Chemical Engineering, Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, 710021, China
| | - Xu Xue
- Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, 710021, China
| | - Hongge Pan
- Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, 710021, China
| | - Renchao Che
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai, 200438, China
- College of Physics, Donghua University, Shanghai, 201620, China
- Zhejiang Laboratory, Hangzhou, 311100, China
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2
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Mim JJ, Hasan M, Chowdhury MS, Ghosh J, Mobarak MH, Khanom F, Hossain N. A comprehensive review on the biomedical frontiers of nanowire applications. Heliyon 2024; 10:e29244. [PMID: 38628721 PMCID: PMC11016983 DOI: 10.1016/j.heliyon.2024.e29244] [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: 01/06/2024] [Revised: 04/03/2024] [Accepted: 04/03/2024] [Indexed: 04/19/2024] Open
Abstract
This comprehensive review examines the immense capacity of nanowires, nanostructures characterized by unbounded dimensions, to profoundly transform the field of biomedicine. Nanowires, which are created by combining several materials using techniques such as electrospinning and vapor deposition, possess distinct mechanical, optical, and electrical properties. As a result, they are well-suited for use in nanoscale electronic devices, drug delivery systems, chemical sensors, and other applications. The utilization of techniques such as the vapor-liquid-solid (VLS) approach and template-assisted approaches enables the achievement of precision in synthesis. This precision allows for the customization of characteristics, which in turn enables the capability of intracellular sensing and accurate drug administration. Nanowires exhibit potential in biomedical imaging, neural interfacing, and tissue engineering, despite obstacles related to biocompatibility and scalable manufacturing. They possess multifunctional capabilities that have the potential to greatly influence the intersection of nanotechnology and healthcare. Surmounting present obstacles has the potential to unleash the complete capabilities of nanowires, leading to significant improvements in diagnostics, biosensing, regenerative medicine, and next-generation point-of-care medicines.
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Affiliation(s)
- Juhi Jannat Mim
- Department of Mechanical Engineering, IUBAT-International University of Business Agriculture and Technology, Bangladesh
| | - Mehedi Hasan
- Department of Mechanical Engineering, IUBAT-International University of Business Agriculture and Technology, Bangladesh
| | - Md Shakil Chowdhury
- Department of Mechanical Engineering, IUBAT-International University of Business Agriculture and Technology, Bangladesh
| | - Jubaraz Ghosh
- Department of Mechanical Engineering, IUBAT-International University of Business Agriculture and Technology, Bangladesh
| | - Md Hosne Mobarak
- Department of Mechanical Engineering, IUBAT-International University of Business Agriculture and Technology, Bangladesh
| | - Fahmida Khanom
- Department of Mechanical Engineering, IUBAT-International University of Business Agriculture and Technology, Bangladesh
| | - Nayem Hossain
- Department of Mechanical Engineering, IUBAT-International University of Business Agriculture and Technology, Bangladesh
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3
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Zhao Y, Su S, Liu Z, Ren J, Wang L, Wang Y. One-step sintering construction of electromagnetic synergistic Co 7Fe 3/Co@CBC nanocomposites for enhanced microwave absorption properties. Phys Chem Chem Phys 2024; 26:9475-9487. [PMID: 38450519 DOI: 10.1039/d3cp06295c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Based on the synergistic modulation of electromagnetic parameters and microstructure design, multidimensional porous magnetic carbon-based nanocomposites have become ideal materials with efficient absorption properties. What's more, a carbon-magnetic alloy composite is a commonly used and efficient microwave absorber. In this paper, Co7Fe3/Co@CBC (CFCC) nanocomposites with strong magnetism, a three-phase composition, and a three-dimensional porous structure were synthesized by reducing Fe2+ and Co2+ using chestnut-shell biomass carbon (CBC). Biomass carbon with a higher specific surface area provides numerous active sites for Co7Fe3 nanosheets and Co nanospheres to form three-dimensional ping-pong chrysanthemum-like nanocomposites, which generate rich heterogeneous interfaces and conductive network structures. By adjusting the amount of added biomass, the electromagnetic parameters can be effectively regulated to achieve efficient microwave absorption properties. When the amount of biomass added varies within the range of 1.0 to 2.5 g, all samples exhibit a favorable effective absorption bandwidth (EAB) of over 5.88 GHz. In particular, the CFCC-2.0 composite exhibits optimal microwave absorption properties, with a minimum reflection loss (RLmin) value of -59.25 dB and an EAB of 6.34 GHz at a thickness of 2.8 mm. The simulation and modeling analysis results of radar cross section (RCS) further confirm the exceptional attenuation capability of composite materials at multiple incident angles. The exceptional microwave absorption properties and stability of EAB for the Co7Fe3/Co@CBC nanocomposite make it a promising candidate in the field of absorbing materials. This work also provides some feasible ideas for designing stable broadband wave-absorbing materials.
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Affiliation(s)
- Yunmin Zhao
- National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China.
| | - Shunlin Su
- National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China.
| | - Zhilong Liu
- National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China.
| | - Jianxin Ren
- National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China.
| | - Lihong Wang
- National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China.
| | - Yude Wang
- National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China.
- Yunnan Key Laboratory of Carbon Neutrality and Green Low-carbon Technologies, Yunnan University, Kunming 650091, People's Republic of China
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4
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V N, Gopal R, C A, T P A, K K A, Praveen VK, Kizhakayil RN. p-Phenylenediamine-derived carbon nanodots for probing solvent interactions. NANOSCALE ADVANCES 2024; 6:1535-1547. [PMID: 38419862 PMCID: PMC10898438 DOI: 10.1039/d3na00799e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 02/02/2024] [Indexed: 03/02/2024]
Abstract
Carbon nanodots, the luminescent nanoparticles of carbon with size restriction below 10 nm, have attracted inordinate attention in materials science due to their widespread applications in optoelectronic and biological fields. Low toxicity and facile synthesis pathways render them favourites in the above-mentioned areas in the context of green chemistry. This work presents fine applications of p-phenylenediamine-derived carbon nanodots (PD-CNDs) achieved via a facile one-pot hydrothermal method. Adequate characterization using X-ray diffraction and spectroscopic and microscopic studies confirmed spherical particles with an average particle size of 2.8 nm, functionalised with amino, carboxyl, and hydroxyl groups. The carbon framework was functionalised with pyridinic and pyrrolic nitrogens. Upon 365 nm UV light illumination, an aqueous dispersion of PD-CNDs showed red-orange fluorescence. Detailed spectral analysis using UV-visible absorption and fluorescence spectroscopy identified edge states and surface groups as luminescent centres, with a significant contribution arising from the latter. The investigation conducted using a collection of solvents, categorized into polar and nonpolar, indicated the potential of the system for applications based on its solvatochromic nature. The feature enabled the determination of different polarity parameters of the solvents, as well as dielectric constants of solvents and solvent mixtures, with considerable accuracy. The system was potent for predicting the composition of a given pair of solvents. The service of the system is also extended for moisture sensing in organic solvents within an error percentage < 1. High quantum yield values (0.61) combined with solvent composition-dependent optical features ensure broader applications of the system to probe solvent interactions.
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Affiliation(s)
- Nidhisha V
- Advanced Materials Research Centre, Department of Chemistry, University of Calicut Kerala 673635 India
| | - Ritu Gopal
- Advanced Materials Research Centre, Department of Chemistry, University of Calicut Kerala 673635 India
| | - Anjali C
- Advanced Materials Research Centre, Department of Chemistry, University of Calicut Kerala 673635 India
| | - Amrutha T P
- Advanced Materials Research Centre, Department of Chemistry, University of Calicut Kerala 673635 India
| | - Arunima K K
- Advanced Materials Research Centre, Department of Chemistry, University of Calicut Kerala 673635 India
| | - Vakayil K Praveen
- Photosciences and Photonics Section, Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST) Thiruvananthapuram Kerala 695019 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Renuka Neeroli Kizhakayil
- Advanced Materials Research Centre, Department of Chemistry, University of Calicut Kerala 673635 India
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5
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Bijender, Kumar S, Soni A, Yadav R, Singh SP, Kumar A. Noninvasive Blood Pressure Monitoring via a Flexible and Wearable Piezoresistive Sensor. ACS OMEGA 2024; 9:6355-6365. [PMID: 38375497 PMCID: PMC10876045 DOI: 10.1021/acsomega.3c04786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 12/22/2023] [Accepted: 01/18/2024] [Indexed: 02/21/2024]
Abstract
In the present global context, continuous blood pressure (BP) monitoring is paramount in addressing the global mortality rates attributed to hypertension. Achieving precise insights into the human cardiovascular system necessitates accurate measurement of BP, and the accuracy depends on the faithful recording of oscillations or pulsations. This task ultimately depends on the caliber of the pressure sensor embedded in the BP device. In this context, we have fabricated a flexible resistive pressure sensor based on reduced graphene oxide (rGO) and a polydimethylsiloxane (PDMS) sponge that is highly flexible and sensitive. The designed device operates effectively with a minimal bias voltage of 500 mV, at which point it showed its maximum relative change in current, reaching approximately 25%. Additionally, the sensing device showed a notable change in resistance values, exhibiting almost 100% change in resistance when subjected to a pressure of 400 mmHg and high sensitivity of 0.27 mmHg-1. After promising outcomes were obtained during static pressure measurement, the sensor was used for BP monitoring in humans. The sensor accurately traced the oscillometric waveform (OMW) for distinct systolic blood pressure (SBP) and diastolic blood pressure (DBP) combinations to cover a range of medical situations, including hypotension, standard or normal, and hypertension. The values of SBP, DBP, and MAP were derived from the sensor's output using the MAA technique, and the errors in these values concerning the simulator and the traditional BP monitor follow the universal AAMI/ESH/ISO protocols. Bland-Altman (B&A) correlation and scatter plots were used to compare the sensor's results and further validate the proposed sensor. The sensor showed the mean and standard deviation error in the SBP, DBP, and MBP of -0.2 ± 5.9, -0.5 ± 7, and -0.9 ± 4.7 mmHg when compared with the noninvasive blood pressure (NIBP) simulator. The pulse rate (PR) was also calculated from the same OMW for the specified value of 80 beats per minute (bpm) given by the simulator and reported a mean PR value of ∼81 bpm, close to the reference value. The findings show that the flexible resistive sensing device can accurately measure BP and replace the existing sensors of BP devices.
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Affiliation(s)
- Bijender
- CSIR-National
Physical Laboratory, Dr. K. S. Krishnan
Marg, New Delhi 110012, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Shubham Kumar
- CSIR-National
Physical Laboratory, Dr. K. S. Krishnan
Marg, New Delhi 110012, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Amit Soni
- CSIR-National
Physical Laboratory, Dr. K. S. Krishnan
Marg, New Delhi 110012, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Rimjhim Yadav
- CSIR-National
Physical Laboratory, Dr. K. S. Krishnan
Marg, New Delhi 110012, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Surinder P. Singh
- CSIR-National
Physical Laboratory, Dr. K. S. Krishnan
Marg, New Delhi 110012, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ashok Kumar
- CSIR-National
Physical Laboratory, Dr. K. S. Krishnan
Marg, New Delhi 110012, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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6
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Liu P, Li Y, Xu H, Shi L, Kong J, Lv X, Zhang J, Che R. Hierarchical Fe-Co@TiO 2 with Incoherent Heterointerfaces and Gradient Magnetic Domains for Electromagnetic Wave Absorption. ACS NANO 2024; 18:560-570. [PMID: 38109426 DOI: 10.1021/acsnano.3c08569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2023]
Abstract
Induced polarization response and integrated magnetic resonance show prosperous advantages in boosting electromagnetic wave absorption but still face huge challenges in revealing the intrinsic mechanism. In this work, we propose a self-confined strategy to construct hierarchical Fe-Co@TiO2 microrods with numerous incoherent heterointerfaces and gradient magnetic domains. The results demonstrate that the use of polyvinylpyrrolidone (PVP) coating is crucial for the subsequent deposition of Co-zeolitic imidazolate frameworks (ZIF-67), the distance of ordered arranged metal ions manipulates the size of magnetic domains, and the pyrolysis of PVP layers restricts the eutectic process of Fe-Co alloys to some extent. As a result, these introduced lattice defects, oxygen vacancies, and incoherent heterointerfaces inevitably generate a strong polarization response, and the regulated gradient magnetic domains realize integrated magnetic resonance, including macroscopic magnetic coupling, long-range magnetic diffraction, and nanoscale magnetic bridge connection, and both of the intrinsic mechanisms in dissipating electromagnetic energy are quantitatively clarified by Lorentz off-axis electron holography. Owing to the cooperative merits, the Fe-Co@TiO2 absorbents exhibit enhanced absorption intensity and strong absorption bandwidth. This study inspires us to develop a generalized strategy for manipulating the size of magnetic domains, and the integrated magnetic resonance theory provides a versatile methodology in clarifying magnetic loss mechanism.
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Affiliation(s)
- Panbo Liu
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, P. R. China
| | - Yurou Li
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, P. R. China
| | - Hanxiao Xu
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, P. R. China
| | - Lingzi Shi
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, P. R. China
| | - Jie Kong
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, P. R. China
| | - Xiaowei Lv
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai 200438, P. R. China
| | | | - Renchao Che
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai 200438, P. R. China
- Zhejiang Laboratory, Hangzhou 3111100, P. R. China
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7
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Boro B, Kim N, Kim JS, Paul R, Nailwal Y, Choi Y, Seo DH, Mondal J, Ryu J. Photocatalytic H 2O 2 production from water and air using porous organic polymers. J Colloid Interface Sci 2023; 652:1784-1792. [PMID: 37683406 DOI: 10.1016/j.jcis.2023.09.002] [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: 05/27/2023] [Revised: 08/31/2023] [Accepted: 09/01/2023] [Indexed: 09/10/2023]
Abstract
Producing hydrogen peroxide (H2O2) from H2O and O2 under visible light irradiation is a promising solar-to-chemical energy conversion technology. Hydrogen peroxide has versatile applications as a green oxidant and liquid energy carrier but has been produced through energy-intensive and complex anthraquinone processes. Herein, we report the rational design of efficient and stable porous organic polymer (POP) containing redox centers, anthraquinone photocatalyst (ANQ-POP) for solar H2O2 production. ANQ-POP is readily synthesized with stable dioxin-linkages via efficient one-pot, transition-metal-free nucleophilic aromatic substitution reactions between 1,2,3,4,5,6,7,8-octafluoro-9,10-anthraquinone (OFANQ) and 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP). Exhibiting a fibrillar morphology, ANQ-POP boasts a high surface area of 380 m2∙g-1 and demonstrates thermal stability. With 10 % ethanol, ANQ-POP yields an H2O2 production rate of 320 μmol g-1 under visible light irradiation. Moreover, ANQ-POP alone can efficiently produce H2O2 without any photosensitizers and cocatalysts. Density functional theory calculations reveal that the quinone groups of the anthraquinone moieties can serve as redox centers for H2O2 production under light irradiation. Furthermore, unlike most conventional photocatalysts, it can produce H2O2 using only water and air by catalyzing both oxygen reduction and evolution reactions under light irradiation. Our findings provide an efficient, eco-friendly pathway for photocatalytic production of H2O2 under mild reaction conditions using a dioxin-derived POP-based photocatalyst.
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Affiliation(s)
- Bishal Boro
- Department of Catalysis & Fine Chemicals, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad 500 007, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Nayeong Kim
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea; Emergent Hydrogen Technology R&D Center, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Jae-Seung Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Ratul Paul
- Department of Catalysis & Fine Chemicals, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad 500 007, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Yogendra Nailwal
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, Manauli 140306, India
| | - Yuri Choi
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea; Emergent Hydrogen Technology R&D Center, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Dong-Hwa Seo
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - John Mondal
- Department of Catalysis & Fine Chemicals, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad 500 007, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
| | - Jungki Ryu
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea; Emergent Hydrogen Technology R&D Center, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea; Graduate School of Carbon Neutrality, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea; Center for Renewable Carbon, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea.
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8
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Singh K, Maurya S, Gupta S, Ranjan N, Ramanathan G, Bhattacharya S. Effect of the Standardized ZnO/ZnO-GO Filter Element Substrate driven Advanced Oxidation Process on Textile Industry Effluent Stream: Detailed Analysis of Photocatalytic Degradation Kinetics. ACS OMEGA 2023; 8:28615-28627. [PMID: 37576672 PMCID: PMC10413481 DOI: 10.1021/acsomega.3c03122] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 07/14/2023] [Indexed: 08/15/2023]
Abstract
A simple process of synthesizing coated filter element substrates (FES) containing zinc oxide (ZnO) nanorods and ZnO graphene-oxide nanocomposite for a pilot-scale industrial dye-effluent treatment plant is proposed. This work reports a detailed analysis of the photocatalysis mechanism on real industrial effluent streams containing a mixture of dyes. The analysis is very relevant for conducting advanced oxidation process-assisted effluent remediation at a field-level treatment operation. Estimation of the dye concentration shows nearly complete (≥98%) degradation from an initial dye sample concentration. A detailed study for the analysis of the initial reactive dyes and their degradation products was performed for quantification and identification of the degradation products through various spectral techniques. A design of the remediation mechanism through degradation pathways is proposed for characterizing the organic compounds in the degraded dye products. A regeneration and reusability study was performed on the FES presenting the durability of the FES-designed synthesis process originally for 11 cycles and regenerated FES for six cycles for achieving a threshold of 60% degradation efficiency. The experimental results demonstrate the efficacy of FES through the designed immobilized approach for the complete remediation of textile dye effluents for a 4 h treatment plant process and the consistent operability of the FES for the combined dye wastewater treatment operations.
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Affiliation(s)
- Kirtiman Singh
- Microsystems
Fabrication Lab, Department of Design, Indian
Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Shiwangi Maurya
- Department
of Chemistry, Indian Institute of Technology
Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Surabhi Gupta
- Department
of Medicinal Chemistry, National Institute
of Pharmaceutical Education and Research-Raebareli, Lucknow 226002, Uttar Pradesh, India
| | - Nihar Ranjan
- Department
of Medicinal Chemistry, National Institute
of Pharmaceutical Education and Research-Raebareli, Lucknow 226002, Uttar Pradesh, India
| | - Gurunath Ramanathan
- Department
of Chemistry, Indian Institute of Technology
Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Shantanu Bhattacharya
- Department
of Mechanical Engineering, Indian Institute
of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
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9
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Papadopoulou K, Tarani E, Ainali NM, Chrissafis K, Wurzer C, Mašek O, Bikiaris DN. The Effect of Biochar Addition on Thermal Stability and Decomposition Mechanism of Poly(butylene succinate) Bionanocomposites. Molecules 2023; 28:5330. [PMID: 37513203 PMCID: PMC10384878 DOI: 10.3390/molecules28145330] [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: 06/06/2023] [Revised: 06/30/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023] Open
Abstract
In the present study, poly(butylene succinate) (PBSu) and its bionanocomposites containing 1, 2.5, and 5 wt.% biochar (MSP700) were prepared via in situ melt polycondensation in order to investigate the thermal stability and decomposition mechanism of the materials. X-ray photoelectron spectroscopy (XPS) measurements were carried out to analyze the surface area of a biochar sample and PBSu/biochar nanocomposites. From XPS, it was found that only physical interactions were taking place between PBSu matrix and biochar nanoadditive. Thermal stability, decomposition kinetics, and the decomposition mechanism of the pristine PBSu and PBSu/biochar nanocomposites were thoroughly studied by thermogravimetric analysis (TGA) and pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). TGA thermograms depicted that all materials had high thermal stability, since their decomposition started at around 300 °C. However, results indicated a slight reduction in the thermal stability of the PBSu biochar nanocomposites because of the potential catalytic impact of biochar. Py-GC/MS analysis was employed to examine, in more detail, the thermal degradation mechanism of PBSu nanocomposites filled with biochar. From the decomposition products identified by Py-GC/MS after pyrolysis at 450 °C, it was found that the decomposition pathway of the PBSu/biochar nanocomposites took place mainly via β-hydrogen bond scission, which is similar to that which took place for neat PBSu. However, at higher biochar content (5 wt.%), some localized differences in the intensity of the peaks of some specific thermal degradation products could be recognized, indicating that α-hydrogen bond scission was also taking place. A study of the thermal stability and decomposition pathway of PBSu/biochar bionanocomposites is crucial to examine if the new materials fulfill the requirements for further investigation for mulch films in agriculture or in electronics as possible applications.
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Affiliation(s)
- Katerina Papadopoulou
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Evangelia Tarani
- Laboratory of Advanced Materials and Devices, Department of Physics, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Nina Maria Ainali
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Konstantinos Chrissafis
- Laboratory of Advanced Materials and Devices, Department of Physics, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Christian Wurzer
- UK Biochar Research Centre, School of GeoSciences, University of Edinburgh, Alexander Crum Brown Road, Edinburgh EH9 3FF, UK
| | - Ondřej Mašek
- UK Biochar Research Centre, School of GeoSciences, University of Edinburgh, Alexander Crum Brown Road, Edinburgh EH9 3FF, UK
| | - Dimitrios N Bikiaris
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
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10
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Wang D, Hu Y, Cui Z, Yang P, Du Z, Hou Y, Yang P, Rao J, Wang C, Zhang Y. Sulfur vacancy regulation and multipolarization of NixCo1S nanowires-decorated biotemplated structures to promote microwave absorption. J Colloid Interface Sci 2023; 646:991-1001. [PMID: 37245268 DOI: 10.1016/j.jcis.2023.05.112] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/14/2023] [Accepted: 05/17/2023] [Indexed: 05/30/2023]
Abstract
It is a novel and practical method to use natural porous biomaterials as microwave absorber. In this study, NixCo1S nanowires (NWs)@diatomite (De) composites with one-dimensional (1D)-NWs and three-dimensional(3D)-De composites were prepared by a two-step hydrothermal method using De as template. The effective absorption bandwidth (EAB) of the composite reaches 6.16 GHz at 1.6 mm and 7.04 GHz at 4.1 mm, covering the entire Ku band, and the minimum reflection loss (RLmin) is less than -30 dB. The excellent absorption performance is mainly due to the bulk charge modulation provided by the 1D NWs and the extended microwave transmission path within the absorber, coupled with the high dielectric loss and magnetic loss of the metal-NWS after vulcanization. We present a high-value method that combines vulcanized 1D materials with abundant De to achieve the lightweight broadband efficient microwave absorption at the first time.
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Affiliation(s)
- Dashuang Wang
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Youzhong Hu
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Zhiyuan Cui
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - PaiXuan Yang
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Zhilan Du
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Yi Hou
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Pingan Yang
- College of Automation, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Jinsong Rao
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Can Wang
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Yuxin Zhang
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China.
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Chang X, Duan Z, Wang D, Wang S, Lin Z, Ma B, Wu K. High-Entropy Spinel Ferrites with Broadband Wave Absorption Synthesized by Simple Solid-Phase Reaction. Molecules 2023; 28:molecules28083468. [PMID: 37110704 PMCID: PMC10145696 DOI: 10.3390/molecules28083468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/04/2023] [Accepted: 04/10/2023] [Indexed: 04/29/2023] Open
Abstract
In this work, high-entropy (HE) spinel ferrites of (FeCoNiCrM)xOy (M = Zn, Cu, and Mn) (named as HEO-Zn, HEO-Cu, and HEO-Mn, respectively) were synthesized by a simple solid-phase reaction. The as-prepared ferrite powders possess a uniform distribution of chemical components and homogeneous three-dimensional (3D) porous structures, which have a pore size ranging from tens to hundreds of nanometers. All three HE spinel ferrites exhibited ultrahigh structural thermostability at high temperatures even up to 800 °C. What is more, these spinel ferrites showed considerable minimum reflection loss (RLmin) and significantly enhanced effective absorption bandwidth (EAB). The RLmin and EAB values of HEO-Zn and HEO-Mn are about -27.8 dB at 15.7 GHz, 6.8 GHz, and -25.5 dB at 12.9 GHz, 6.9 GHz, with the matched thickness of 8.6 and 9.8 mm, respectively. Especially, the RLmin of HEO-Cu is -27.3 dB at 13.3 GHz with a matched thickness of 9.1 mm, and the EAB reaches about 7.5 GHz (10.5-18.0 GHz), which covers almost the whole X-band range. The superior absorbing properties are mainly attributed to the dielectric energy loss involving interface polarization and dipolar polarization, the magnetic energy loss referring to eddy current and natural resonance loss, and the specific functions of 3D porous structure, indicating a potential application prospect of the HE spinel ferrites as EM absorbing materials.
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Affiliation(s)
- Xiu Chang
- The State Key Laboratory for Refractories and Metallurgy, Collaborative Innovation Center for Advanced Steels, International Research Institute for Steel Technology, Hubei Province Key Laboratory of Systems Science in Metallurgical Process, College of Science, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Zhiwei Duan
- The State Key Laboratory for Refractories and Metallurgy, Collaborative Innovation Center for Advanced Steels, International Research Institute for Steel Technology, Hubei Province Key Laboratory of Systems Science in Metallurgical Process, College of Science, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Dashuang Wang
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Shushen Wang
- The State Key Laboratory for Refractories and Metallurgy, Collaborative Innovation Center for Advanced Steels, International Research Institute for Steel Technology, Hubei Province Key Laboratory of Systems Science in Metallurgical Process, College of Science, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Zhuang Lin
- The State Key Laboratory for Refractories and Metallurgy, Collaborative Innovation Center for Advanced Steels, International Research Institute for Steel Technology, Hubei Province Key Laboratory of Systems Science in Metallurgical Process, College of Science, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Ben Ma
- The State Key Laboratory for Refractories and Metallurgy, Collaborative Innovation Center for Advanced Steels, International Research Institute for Steel Technology, Hubei Province Key Laboratory of Systems Science in Metallurgical Process, College of Science, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Kaiming Wu
- The State Key Laboratory for Refractories and Metallurgy, Collaborative Innovation Center for Advanced Steels, International Research Institute for Steel Technology, Hubei Province Key Laboratory of Systems Science in Metallurgical Process, College of Science, Wuhan University of Science and Technology, Wuhan 430081, China
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Du Z, Wang D, Zhang X, Yi Z, Tang J, Yang P, Cai R, Yi S, Rao J, Zhang Y. Core-Shell Structured SiO 2@NiFe LDH Composite for Broadband Electromagnetic Wave Absorption. Int J Mol Sci 2022; 24:ijms24010504. [PMID: 36613944 PMCID: PMC9820398 DOI: 10.3390/ijms24010504] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/17/2022] [Accepted: 12/22/2022] [Indexed: 12/29/2022] Open
Abstract
In this work, a novel core-shell structure material, NiFe layered double hydroxide (NiFe LDH) loaded on SiO2 microspheres (SiO2@NiFe LDH), was synthesized by a one-step hydrothermal method, and the spontaneous electrostatic self-assembly process. The morphology, structure, and microwave absorption properties of SiO2@NiFe LDH nanocomposites with different NiFe element ratios were systematically investigated. The results show that the sample of SiO2@NiFe LDH-3 nanocomposite has excellent microwave absorption properties. It exhibits broadband effective absorption bandwidth (RL < −10 dB) of 8.24 GHz (from 9.76 GHz to 18.0 GHz) and the reflection loss is −53.78 dB at the matched thickness of 6.95 mm. It is expected that this SiO2@NiFe-LDH core-shell structural material can be used as a promising non-precious, metal-based material microwave absorber to eliminate electromagnetic wave contamination.
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Affiliation(s)
- Zhilan Du
- College of Material Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Dashuang Wang
- College of Material Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Xinfang Zhang
- College of Material Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Zhiyu Yi
- College of Material Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Jihai Tang
- No. 59 Research Institute of China Ordnance Industries, Chongqing 400039, China
| | - Pingan Yang
- School of Automation, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Rui Cai
- School of Automation, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Shuang Yi
- College of Material Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Jinsong Rao
- College of Material Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Yuxin Zhang
- College of Material Science and Engineering, Chongqing University, Chongqing 400044, China
- Correspondence:
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Microwave Absorption of α-Fe 2O 3@diatomite Composites. Int J Mol Sci 2022; 23:ijms23169362. [PMID: 36012621 PMCID: PMC9409334 DOI: 10.3390/ijms23169362] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/06/2022] [Accepted: 08/10/2022] [Indexed: 11/17/2022] Open
Abstract
A neoteric round sieve diatomite (De) decorated with sea-urchin-like alpha-type iron trioxide (α-Fe2O3) synthetics was prepared by the hydrothermal method and further calcination. The results of the electromagnetic (EM) parameters of α-Fe2O3-decorated De (α-Fe2O3@D) showed that the minimum reflection loss (RLmin) of α-Fe2O3@D could reach -54.2 dB at 11.52 GHz and the matched absorber thickness was 3 mm. The frequency bandwidth corresponding to the microwave RL value below -20 dB was up to 8.24 GHz (9.76-18 GHz). This indicates that α-Fe2O3@D composite can be a lightweight and stable material; because of the low density of De (1.9-2.3 g/cm3), the density of α-Fe2O3@D composite material is lower than that of α-Fe2O3 (5.18 g/cm3). We found that the combination of the magnetic loss of sea-urchin-like α-Fe2O3 and the dielectric loss of De has the most dominant role in electromagnetic wave absorption and loss. We focused on comparing the absorbing properties before and after the formation of sea-urchin-like α-Fe2O3 and explain in detail the effects of the structure and crystal shape of this novel composite on the absorbing properties.
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