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Zhang J, Wang J, Fu Y, Peng X, Xia M, Peng W, Liang Y, Wei W. Nanoscale Fe 3O 4 Electrocatalysts for Oxygen Reduction Reaction. Molecules 2025; 30:1753. [PMID: 40333737 PMCID: PMC12029231 DOI: 10.3390/molecules30081753] [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: 02/11/2025] [Revised: 03/29/2025] [Accepted: 04/09/2025] [Indexed: 05/09/2025] Open
Abstract
This study presents a straightforward hydrothermal synthesis approach to fabricate uniform and highly dispersed nanoscale Fe3O4 electrocatalysts for the oxygen reduction reaction (ORR). FeSO4·7H2O is used as the precursor, and sodium dodecyl sulfate (SDS) is incorporated as a dispersing agent to optimize particle size and dispersion. The SDS concentration plays a crucial role in controlling the particle size and distribution, with higher SDS concentrations resulting in smaller, well-dispersed particles (30-40 nm), compared to the agglomerated particles formed without SDS. The Fe3O4 catalyst demonstrates significant enhancement in ORR performance, with a half-wave potential of 0.091 V vs. Hg/HgO and a limiting diffusion current density of -5.50 mA cm2, surpassing the performance of agglomerated Fe3O4 and approaching that of state-of-the-art 20% Pt/C catalysts. Additionally, the Fe3O4 catalyst exhibits superior stability and resistance to methanol and CO poisoning, presenting a promising alternative to platinum-based catalysts for ORR applications. This work introduces an efficient approach for the synthesis of high-performance and evenly distributed Fe3O4 electrocatalysts, offering a new pathway for the development of metal oxide-based ORR catalysts with enhanced activity and durability.
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Affiliation(s)
- Junjie Zhang
- Aerospace Vehicle Power Engineering, Institute of Aeronautical Engineering, Civil Aviation Flight University of China, Tianfu Campus, Chengdu 618000, China; (J.W.); (Y.F.); (X.P.); (M.X.); (W.P.)
| | - Jilong Wang
- Aerospace Vehicle Power Engineering, Institute of Aeronautical Engineering, Civil Aviation Flight University of China, Tianfu Campus, Chengdu 618000, China; (J.W.); (Y.F.); (X.P.); (M.X.); (W.P.)
| | - Yaoming Fu
- Aerospace Vehicle Power Engineering, Institute of Aeronautical Engineering, Civil Aviation Flight University of China, Tianfu Campus, Chengdu 618000, China; (J.W.); (Y.F.); (X.P.); (M.X.); (W.P.)
| | - Xing Peng
- Aerospace Vehicle Power Engineering, Institute of Aeronautical Engineering, Civil Aviation Flight University of China, Tianfu Campus, Chengdu 618000, China; (J.W.); (Y.F.); (X.P.); (M.X.); (W.P.)
| | - Maosong Xia
- Aerospace Vehicle Power Engineering, Institute of Aeronautical Engineering, Civil Aviation Flight University of China, Tianfu Campus, Chengdu 618000, China; (J.W.); (Y.F.); (X.P.); (M.X.); (W.P.)
| | - Weidong Peng
- Aerospace Vehicle Power Engineering, Institute of Aeronautical Engineering, Civil Aviation Flight University of China, Tianfu Campus, Chengdu 618000, China; (J.W.); (Y.F.); (X.P.); (M.X.); (W.P.)
| | - Yaowei Liang
- Department of Mechanical & Industrial Engineering, University of Toronto, Toronto, ON M5S 2E8, Canada;
| | - Wuguo Wei
- Aerospace Vehicle Power Engineering, Institute of Aeronautical Engineering, Civil Aviation Flight University of China, Tianfu Campus, Chengdu 618000, China; (J.W.); (Y.F.); (X.P.); (M.X.); (W.P.)
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Wang Z, Wang R, Luo M, Cao X, Wang J, Tian X, Li L. Enhancing Electrical Insulation and Thermal Conductivity in Polymer Through Constructing Energy-Dissipation Organic Electron Acceptor/Inorganic Filler. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2025:e2502696. [PMID: 40227152 DOI: 10.1002/smll.202502696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2025] [Revised: 03/24/2025] [Indexed: 04/15/2025]
Abstract
To address the issue that both electrical insulation and thermal transport performance of materials are hard to enhance synchronously, a trap-barrier synergistic strategy is proposed and utilizes the organic electronic acceptor 1,4,5,8-naphthalenetetracarboxylic anhydride (NDA) to modify the inorganic filler Al2O3 (AO), resulting in the formation of AO@NDA, referred to as the "energy dissipator." It restricts carrier mobility and dissipates carrier energy through the synergistic effect of trap-barrier interactions, thereby enhancing the breakdown strength of the composites. In addition, it is further enhanced the long-term effectiveness of the energy dissipator by modifying its chemical activity, based on the molecular design of NDA. The results demonstrate that the introduction of the energy dissipator significantly improves the electrical insulation properties of the composites. For example, the breakdown strength of SG filled with 15 wt.% AO@NDA reaches to 18.7 kV mm-1, which is added up to 11.7% compared to AO/SG at the same loading. Moreover, the high-temperature electrically insulating properties of SG composites are also outstanding due to their preeminent thermal stability and transport performance. This work will present a novel, effective, and scalable approach for the field of power equipment packaging materials.
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Affiliation(s)
- Zhengdong Wang
- School of Mechanical and Electrical Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Ran Wang
- School of Mechanical and Electrical Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Meng Luo
- School of Mechanical and Electrical Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Xiaolong Cao
- School of Mechanical and Electrical Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Jinkai Wang
- School of Mechanical and Electrical Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Xiangyu Tian
- School of Mechanical and Electrical Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Ling Li
- School of Mechanical and Electrical Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
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Hou N, Yan Y, Liu TT. Design of High-Performance Inorganic-Organic Hybrid Nonlinear Optical Materials Using Superhalogen Al 13 and Dianhydrides. J Phys Chem A 2024; 128:3108-3118. [PMID: 38607792 DOI: 10.1021/acs.jpca.4c00527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2024]
Abstract
Novel inorganic-organic hybrid complexes Al13-X (X represents the dianhydrides PMDA, NTCDA, and PTCDA) are theoretically designed and studied using density functional theory (DFT) and time-dependent DFT. These conjugated dianhydrides containing four acceptor carbonyl groups are commonly used as electron acceptor materials. These compounds possess large binding energies, reflecting the sufficient binding of Al13 to the dianhydride molecule. The binding nature of the complexes is of charge transfer type, i.e., electrons are transferred from the aluminum cluster to the dianhydride. All of the aimed complexes have large mean polarizability (α0) and first hyperpolarizability (β0). The β0 values are explained on the basis of electronic transitions in crucial excited states using the TD-DFT method. Additionally, the hole-electron distribution was analyzed, revealing the nature of electronic excitation. Absorption spectra analysis shows that these complexes have an excellent infrared (IR) transparent region (1000-5000 nm). Therefore, these inorganic-organic hybrid complexes with high stability can be considered as potential candidates for new IR nonlinear optical molecules.
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Affiliation(s)
- Na Hou
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials Science of Shanxi Normal University, Taiyuan 030032, China
| | - Yan Yan
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials Science of Shanxi Normal University, Taiyuan 030032, China
| | - Ting-Ting Liu
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials Science of Shanxi Normal University, Taiyuan 030032, China
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Singh S, Narasimhappa P, Khan NA, Chauhan V, Shehata N, Behera SK, Singh J, Ramamurthy PC. Effective voltammetric tool for Nano-detection of triazine herbicide (1-Chloro-3-ethylamino-5-isopropylamino-2,4,6-triazine) by naphthalene derivative. ENVIRONMENTAL RESEARCH 2023; 236:116808. [PMID: 37579962 DOI: 10.1016/j.envres.2023.116808] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 07/07/2023] [Accepted: 07/30/2023] [Indexed: 08/16/2023]
Abstract
The development and operation of a nanosensor for detecting the poisonous 1-chloro-3-ethylamino-5-isopropylamino-2,4,6-triazine (Atrazine) are described in this study for the first time. The carbon electrode (CE) surface was modified with cysteine-substituted naphthalene diimide to create this sensitive platform. The developed nanosensor (NDI-cys/GCE) was evaluated for its ability to sense Atrazine using differential pulse voltammetry and cyclic voltammetry. To achieve the best response from the target analyte, the effects of several parameters were examined to optimize the conditions. The cysteine-substituted naphthalene diimide significantly improved the signals of the Atrazine compared to bare GCE due to the synergistic activity of substituted naphthalene diimide and cysteine molecules. Under optimal conditions, atrazine detection limits at the (NDI-cys/GCE) were reported to be 94 nM with a linear range of 10-100 μM. The developed sensing platform also showed positive results when used to detect the atrazine herbicide in real tap water, wastewater, and milk samples. Furthermore, a reasonable recovery rate for real-time studies, repeatability, and stability revealed that the developed electrochemical platform could be used for sample analysis.
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Affiliation(s)
- Simranjeet Singh
- Interdisciplinary Centre for Water Research (ICWaR), Indian Institute of Science, Bengaluru, Karnataka, 560012, India
| | - Pavithra Narasimhappa
- Interdisciplinary Centre for Water Research (ICWaR), Indian Institute of Science, Bengaluru, Karnataka, 560012, India
| | - Nadeem A Khan
- Interdisciplinary Research Center for Membranes and Water Security, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Vishakha Chauhan
- Interdisciplinary Centre for Water Research (ICWaR), Indian Institute of Science, Bengaluru, Karnataka, 560012, India
| | - Nabila Shehata
- Environmental Science and Industrial Development Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef 62511, Egypt
| | - S K Behera
- Department of Materials Engineering, Indian Institute of Science, Bengaluru, Karnataka, 560012, India
| | - Joginder Singh
- Department of Microbiology, Lovely Professional University, Jalandhar, Punjab, 144111, India
| | - Praveen C Ramamurthy
- Interdisciplinary Centre for Water Research (ICWaR), Indian Institute of Science, Bengaluru, Karnataka, 560012, India.
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Nasidi I, Kaygili O, Majid A, Bulut N, Alkhedher M, ElDin SM. Halogen Doping to Control the Band Gap of Ascorbic Acid: A Theoretical Study. ACS OMEGA 2022; 7:44390-44397. [PMID: 36506119 PMCID: PMC9730502 DOI: 10.1021/acsomega.2c06075] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 11/10/2022] [Indexed: 06/17/2023]
Abstract
Ascorbic acid is an important antioxidant agent that acts as an electron donor and is involved in many physiological processes. Structural modification in ascorbic acid is a subject of extensive biochemical research due to its involvement in a variety of relevant phenomena including electron transport, complex redox reactions, neurochemical reactions, enzymatic reactions, and chemotherapeutic potential. In this work, the structure of ascorbic acid is modified via doping with the first three members of the halogen group to investigate the changes in the electronic structure and spectroscopic parameters using first-principles methods. To obtain the lowest-energy structures, different basis sets in density functional theory (DFT) and Hartree-Fock approaches were employed in the geometry optimization process. The potential energy maps of the structures were computed to study the molecular orientations and their optical and electrical properties. The spectroscopic properties were computed via UV-vis and nuclear magnetic resonance (NMR) spectroscopies to study the effects of doping into the compound. To obtain further insights into the chemical structure, the Fourier transform infrared (FT-IR) spectra of the materials were theoretically investigated. It was found that the band gap is sensitive to doping as we moved from fluorine to chlorine and then to bromine.
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Affiliation(s)
- Ibrahim
Isah Nasidi
- Department
of Physics, Faculty of Science, Firat University, 23119 Elazig, Turkey
| | - Omer Kaygili
- Department
of Physics, Faculty of Science, Firat University, 23119 Elazig, Turkey
| | - Abdul Majid
- Department
of Physics, University of Gujrat, Gujrat 50700, Pakistan
| | - Niyazi Bulut
- Department
of Physics, Faculty of Science, Firat University, 23119 Elazig, Turkey
| | - Mohammad Alkhedher
- Mechanical
and Industrial Engineering Department, Abu
Dhabi University, Abu Dhabi 111188, United
Arab Emirates
| | - Sayed M. ElDin
- Center
of Research, Faculty of Engineering & Technology, Future University in Egypt, New Cairo 11835, Egypt
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Tanış E. New optoelectronic material based on biguanide for orange and yellow organic light emitting diode: A combined experimental and theoretical study. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Guo Y, Xu G, Xu Z, Guo Y. Developing visible light responsive BN/NTCDA heterojunctions with a good degradation performance for tetracycline. NEW J CHEM 2022. [DOI: 10.1039/d2nj04395e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
In this paper, a series of BN/NTCDA photocatalysts have been prepared using a simple calcination method and their photocatalytic performance under visible light irradiation is studied with tetracycline (TC) as the target pollutant.
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Affiliation(s)
- Yong Guo
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210093, P. R. China
| | - Guowei Xu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210093, P. R. China
| | - Zixuan Xu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210093, P. R. China
| | - Ying Guo
- Key Laboratory of Environmental Engineering of Jiangsu Province, Jiangsu Provincial Academy of Environmental Science, Nanjing, 210036, China
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