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Hussain S, Aslam A, Tajammal A, Othman F, Mustafa Z, Alsuhaibani AM, Refat MS, Shahid M, Sagir M, Zakaria ZA. Tagetes erecta-Mediated Biosynthesis of Mn 3O 4 Nanoparticles: Structural, Electrochemical, and Biological Investigations. ACS OMEGA 2024; 9:35408-35419. [PMID: 39184463 PMCID: PMC11339805 DOI: 10.1021/acsomega.4c01328] [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: 02/10/2024] [Revised: 05/01/2024] [Accepted: 05/16/2024] [Indexed: 08/27/2024]
Abstract
Mn3O4 nanoparticles (NPs) find diverse applications in the fields of medicine, biomedicine, biosensors, water treatment and purification, electronics, electrochemistry, and photoelectronics. The production of Mn3O4 NPs was reported earlier through various physical, chemical, and green routes, but no studies have still been performed on their biosynthesis from Tagetes erecta. We synthesized manganese oxide NPs, i.e., (Mn3O4)L and (Mn3O4)P NPs, by utilizing leaves and petals, respectively, of T. erecta as reducing and stabilizing agents. The investigated green path is eco-friendly and does not involve any hazardous raw materials. The structural properties of NPs were determined by X-ray diffraction (XRD) analysis, spectroscopies (Fourier transform infrared (FTIR), Raman, and UV-visible), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). The NPs were also evaluated for their electrochemical properties by cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD). XRD analysis was performed to verify their tetragonal geometry, and the crystallite size (19.24 nm) of (Mn3O4)P was smaller than that (20.84 nm) of (Mn3O4)L NPs. SEM images displayed a porous and spherical morphology with a diameter of 14-35 nm. FTIR spectra of (Mn3O4)L and (Mn3O4)P displayed Mn-O vibrations at 605.69 and 616.87 cm-1, respectively, and the hydrous nature of the material. Raman spectroscopy revealed the existence of tetrahedral and octahedral units along with A1g, T2g, and Eg active modes of Mn3O4 and 2TO mode. UV-visible analyses of (Mn3O4)L and (Mn3O4)P NPs showed absorption peaks at 272.3 and 268.8 nm, along with band gaps of 4.83 and 5.49 eV, respectively. TGA curves displayed good thermal stabilities up to 600 °C and a loss of moisture content. DSC curves exhibited exothermic/endothermic peaks with glass transition temperatures of 258.9 and 308.7 °C for (Mn3O4)P and (Mn3O4)L, respectively. The CV curves showed redox peaks and confirmed that the electrochemical reaction takes place in the Mn3O4 material. GCD scans revealed the capacitive behavior of NPs and their suitability as electrodes in energy storage devices. However, (Mn3O4)L will act as a good material for energy storage applications as compared to (Mn3O4)P NPs. The synthesized NPs were also tested for their antibacterial efficacy by biofilm inhibition and agar well diffusion methods. The NPs showed higher activities against Staphylococcus aureus (Gram-positive) than against Escherichia coli (Gram-negative), and (Mn3O4)P was more bioactive than (Mn3O4)L.
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Affiliation(s)
- Shabbir Hussain
- Institute
of Chemistry, Khwaja Fareed University of
Engineering and Information Technology, Rahim Yar Khan 64200, Pakistan
| | - Ammara Aslam
- Department
of Chemistry, Lahore Garrison University, DHA Phase VI, Lahore 54792, Pakistan
| | - Affifa Tajammal
- Department
of Chemistry, Lahore Garrison University, DHA Phase VI, Lahore 54792, Pakistan
| | - Fezah Othman
- Department
of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
| | - Zeeshan Mustafa
- Department
of Physics, Lahore Garrison University, DHA Phase VI, Lahore 54792, Pakistan
| | - Amnah Mohammed Alsuhaibani
- Department
of Physical Sport Science, College of Sport Sciences & Physical
Activity, Princess Nourah bint Abdulrahman
University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Moamen Salaheldeen Refat
- Department
of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Muhammad Shahid
- Department
of Chemistry and Biochemistry, University
of Agriculture, Faisalabad 38000, Pakistan
| | - Muhammad Sagir
- Institute
of Chemical and Environmental Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan 64200, Pakistan
| | - Zainul Amiruddin Zakaria
- Borneo
Research on Algesia, Inflammation and Neurodegeneration (BRAIN) Group,
Department of Biomedical Sciences, Faculty of Medicine and Health
Sciences, Universiti Malaysia Sabah, Kota Kinabalu 88400, Sabah, Malaysia
- Department
of Environmental Health, Faculty of Public Health, Campus C Universitas Airlangga, Jalan Mulyorejo Surabaya 60115, East Java Indonesia
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Upama S, Arevalo L, Pendashteh A, Mikhalchan A, Green MJ, Vilatela JJ. Joule Heating in Controlled Atmospheres to Process Nanocarbon/Transition Metal Oxide Composites and Electrodes. ACS APPLIED NANO MATERIALS 2024; 7:14557-14565. [PMID: 38962506 PMCID: PMC11217916 DOI: 10.1021/acsanm.4c02081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 06/08/2024] [Accepted: 06/10/2024] [Indexed: 07/05/2024]
Abstract
Composites of nanocarbons and transition metal oxides combine excellent mechanical properties and high electrical conductivity with high capacitive active sites. These composites are promising for applications such as electrochemical energy conversion and storage, catalysis, and sensing. Here, we show that Joule heating can be used as a rapid out-of-oven thermal processing technique to crystallize the inorganic metal oxide matrix within a carbon nanotube fabric (CNTf) composite. We choose manganese oxide and vanadium oxide as model metal oxides and show that the Joule heating process is rapid and enables accurate control over the temperature and phase transitions. Next, we use thermogravimetric analysis and Joule heating experiments in controlled atmospheres to show that metal oxides can actually catalyze thermal degradation and reduce the thermal stability of the CNTs, which could limit processing of many oxides. We solve this by using a reducing hydrogen atmosphere to successfully extend the Joule processing window and thermal stability of the CNTf/metal oxide composite to ∼1000 °C.
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Affiliation(s)
- Shegufta Upama
- Department
of Materials Science & Engineering, Texas A&M University, College
Station, Texas 77843, United States
- IMDEA
Materials Institute, Getafe, Madrid 28906, Spain
| | - Luis Arevalo
- IMDEA
Materials Institute, Getafe, Madrid 28906, Spain
| | | | | | - Micah J. Green
- Department
of Materials Science & Engineering, Texas A&M University, College
Station, Texas 77843, United States
- Artie
McFerrin Department of Chemical Engineering, Texas A&M University, College
Station, Texas 77843, United States
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Zaragosa GP, Ilem CND, Conde BIC, Garcia J. Plant-mediated synthesis of Mn 3O 4nanoparticles: challenges and applications. NANOTECHNOLOGY 2024; 35:342001. [PMID: 38754375 DOI: 10.1088/1361-6528/ad4c71] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 05/16/2024] [Indexed: 05/18/2024]
Abstract
This review focuses on the green synthesis methods, challenges, and applications of manganese oxide (Mn3O4) nanoparticles investigated in the past five years. Mn3O4nanoparticles offer some unique properties that are attributed in part to the presence of mixed oxidation states of manganese (i.e. +2 and +3) in the particle, which can be utilized in a wide range of redox-sensitive applications, such as in developing supercapacitive energy storage materials. In addition, the green synthesis of Mn3O4nanoparticles through plant extracts has potential uses in sustainable nanotechnology. Various plant extract-mediated synthesis techniques for Mn3O4nanoparticles have been investigated and presented. By comparing the size and structure of the synthesized Mn3O4nanoparticles, we have observed a consistent pattern of obtaining spherical particles with a size ranging from 16 to 50 nm. The morphology of the generated Mn3O4nanoparticles can be influenced by the annealing temperature and the composition of the plant extract used during the nanoparticle synthesis. Additionally, numerous applications for the greenly produced Mn3O4nanoparticles have been demonstrated. Mn3O4nanoparticles derived from plant extracts have been found to possess antimicrobial properties, supercapacitive and electrochemical capabilities, and excellent pollutant degradation efficiency. However, the magnetic properties of these nanoparticles synthesized by plant extracts are yet to be explored for potential biomedical applications. Finally, challenges to existing synthetic methods and future perspectives on the potential applications of these green synthesized Mn3O4nanoparticles are highlighted.
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Affiliation(s)
- Gelo P Zaragosa
- Department of Chemistry, De La Salle University, Manila, The Philippines
| | | | | | - Joel Garcia
- Department of Chemistry, De La Salle University, Manila, The Philippines
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Shome A, Ali S, Haydar MS, Sarkar K, Roy S, Adhikary P, Roy MN. Synthesis of Spherical Mn 2O 3 Nanozymes from Different Green Precursors for their Innovative Applications in Catalytic Properties and Bioactivity. ACS Biomater Sci Eng 2024; 10:1734-1742. [PMID: 38330433 DOI: 10.1021/acsbiomaterials.3c00608] [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] [Indexed: 02/10/2024]
Abstract
Here, spherical Mn2O3 nanozymes were synthesized via a one-step green method using different green precursors, and their physicochemical properties and biological activities were monitored with various green precursors. Powder X-ray diffraction (PXRD) was performed to determine the crystalline properties and phases involved in the formation of cubic Mn2O3 nanozymes. The synthesized nanozymes were spherical and examined by SEM and FESEM studies. All of the samples synthesized using different green precursors exhibited different sizes but similar spherical shapes. Moreover, all green-synthesized nanozymes catalyzed the oxidation reaction of the chromogenic substrate 3,3'5,5' tetramethylbenzidine (TMB) in the absence of H2O2, and A2 (lemon-mediated Mn2O3 nanozymes), which the followed Michaelis-Menten kinetics, showed the best activity. Therefore, A2 (lemon-mediated nanozyme) showed oxidase-mimicking activity with distinct Km and Vmax values calculated by the Lineweaver-Burk plot. Furthermore, the current nanozymes demonstrated a significant ability to kill both Gram-negative and Gram-positive bacteria as well as effectively destroy biofilms under physiological conditions. Moreover, the green-mediated nanozymes also displayed ROS-scavenging activity. Our nanozymes exhibited scavenging activity toward OH and O2-• radicals and metal chelation activity, which were investigated colorimetrically. Therefore, these nanozymes might be used as effective antibacterial agents and also for the consumption of reactive oxygen species.
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Affiliation(s)
- Ankita Shome
- Department of Chemistry, University of North Bengal, Darjeeling 734013, West Bengal, India
| | - Salim Ali
- Department of Chemistry, University of North Bengal, Darjeeling 734013, West Bengal, India
| | - Md Salman Haydar
- Department of Botany, University of North Bengal, Siliguri 734013, West Bengal, India
| | - Kushankur Sarkar
- Department of Botany, University of North Bengal, Siliguri 734013, West Bengal, India
| | - Swarnendu Roy
- Department of Botany, University of North Bengal, Siliguri 734013, West Bengal, India
| | - Prakriti Adhikary
- Department of Physics, University of North Bengal, Darjeeling 734013, West Bengal, India
| | - Mahendra Nath Roy
- Department of Chemistry, University of North Bengal, Darjeeling 734013, West Bengal, India
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Brindhadevi K, Kim PT, AlSalhi MS, Elkader OHA, T N, Lee J, Bharathi D. Deciphering the photocatalytic degradation of polyaromatic hydrocarbons (PAHs) using hausmannite (Mn 3O 4) nanoparticles and their efficacy against bacterial biofilm. CHEMOSPHERE 2024; 349:140961. [PMID: 38104733 DOI: 10.1016/j.chemosphere.2023.140961] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 10/16/2023] [Accepted: 12/12/2023] [Indexed: 12/19/2023]
Abstract
Polyaromatic hydrocarbons (PAHs) are life-threatening organic pollutants that severely threaten ecosystems worldwide due to their poisonous qualities, cancer-causing properties, and mutation-causing qualities. Water and soil together form a critical component of the ecosystem that supports all life. Due to the pollutants that are being disposed of in them, their characteristics have changed, and their toxicity has increased. The goal of this study was to investigate the ability of hausmannite nanoparticles to degrade fluorene from soil and water. Using the chemical method, hausmannite nanoparticles were synthesized and further characterization was performed using UV-Vis, FTIR, DLS, XRD, and SEM-EDAX. Hausmannite significantly degraded fluorene using the batch adsorption method. The degradation was also confirmed by performing reactive kinetics using Freundlich's isotherm model and Langmuir's pseudo-second-order model of soil and water. In addition to the degradation efficacy, hausmannite was also proved to inhibit biofilm formation by Pseudomonas aeruginosa. The findings of the experiments confirmed the presence of hausmannite nanoparticles, as well as their physical properties, chemical properties, degradation properties, and parameters of the kinetic study. As a result, synthesized nanoparticles have been extensively utilized as a low-cost option for removing pollutants and microbial biofilm.
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Affiliation(s)
- Kathirvel Brindhadevi
- Institute of Research and Development, Duy Tan University, Da Nang ,Vietnam; School of Engineering & Technology, Duy Tan University, Da Nang, Vietnam.
| | - P T Kim
- Institute of Research and Development, Duy Tan University, Da Nang ,Vietnam; School of Engineering & Technology, Duy Tan University, Da Nang, Vietnam
| | - Mohamad S AlSalhi
- Department of Physics and Astronomy, College of Science, King Saud University, P. O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Omar H Abd Elkader
- Department of Physics and Astronomy, College of Science, King Saud University, P. O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Naveena T
- Center for Global Health Research, Saveetha Medical College, Saveetha Institute of Medical and Technical Sciences, India
| | - Jintae Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, Republic of Korea
| | - Devaraj Bharathi
- School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, Republic of Korea.
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Zhang X, Sathiyaseelan A, Naveen KV, Lu Y, Wang MH. Research progress in green synthesis of manganese and manganese oxide nanoparticles in biomedical and environmental applications - A review. CHEMOSPHERE 2023:139312. [PMID: 37354955 DOI: 10.1016/j.chemosphere.2023.139312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 06/19/2023] [Accepted: 06/21/2023] [Indexed: 06/26/2023]
Abstract
Nanomaterials and nanotechnology have this unassailable position for environmental remediation and medicine. Currently, global environmental pollution and public health problems are increasing and need to be urgently addressed. Manganese (Mn) is one of the essential metal elements for plants and animals, it is necessary to integrate with nanotechnology. Mn and Mn oxide (MnO) nanoparticles (NPs) have applications in dye degradation, biomedicine, electrochemical sensors, plant and animal growth, and catalysis. However, the current research is limited, especially in terms of optimal synthesis of Mn and MnO NPs, separation, purification conditions, and the development of potential application areas is too basic and do not support by in-depth studies. Hence, this review comprehensively discusses the classification, green synthesis methods, and applications of Mn and MnO NPs in biomedical, environmental, and other fields and gives a perspective for the future.
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Affiliation(s)
- Xin Zhang
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon, 24341, Republic of Korea.
| | - Anbazhagan Sathiyaseelan
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon, 24341, Republic of Korea.
| | - Kumar Vishven Naveen
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon, 24341, Republic of Korea.
| | - Yuting Lu
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon, 24341, Republic of Korea.
| | - Myeong-Hyeon Wang
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon, 24341, Republic of Korea.
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Biochar Derived from Palm Waste Supported Greenly Synthesized MnO2 Nanoparticles as a Novel Adsorbent for Wastewater Treatment. Catalysts 2023. [DOI: 10.3390/catal13020451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
Abstract
Water pollution with dye effluents from different industries is a broadly established environmental and health problem that needs serious attention. In this study, making use of Acacia nilotica seed extract, greenly synthesized MnO2 nanoparticles were loaded on the surface of biochar derived from palm waste (MnO2/PF), with specific surface areas of 70.97 m2/g. Batch experiments were adopted, aiming to evaluate the performance of palm fronds, biochar, and the MnO2/PF adsorbents in methyl orange (MO) removal from an aqueous solution. The feedstock and synthesized biochars were comprehensively characterized using XRD, SEM-EDX, FTIR, and BET surface area techniques. Moreover, the influences of the modification of palm fronds, initial dye concentrations, pH, and adsorbent dosage on MO uptake were examined. The results demonstrated that MnO2/PF biochar nanocomposite led to an increase in the removal efficiency by 6 and 1.5 times more than those of palm fronds and biochar, respectively. In addition, it was found that the second-order kinetic model presented the kinetic adsorption very well. This paper demonstrates that the depositing of greenly synthesized MnO2 nanoparticles on the date palm waste biochar forms a novel adsorbent (MnO2/PF) for the removal of MO from aqueous solutions. Furthermore, this adsorbent was easy to synthesize under moderate conditions without the need for chemical capping agents, and would thus be cost-effective and eco-friendly.
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Tran TV, Nguyen DTC, Kumar PS, Din ATM, Qazaq AS, Vo DVN. Green synthesis of Mn 3O 4 nanoparticles using Costus woodsonii flowers extract for effective removal of malachite green dye. ENVIRONMENTAL RESEARCH 2022; 214:113925. [PMID: 35868583 DOI: 10.1016/j.envres.2022.113925] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 07/11/2022] [Accepted: 07/15/2022] [Indexed: 06/15/2023]
Abstract
The pollution of organic dyes such as malachite green is one of the globally critical issues, calling for efficient mitigation methods. Herein, we developed green Mn3O4 nanoparticles synthesized using natural compounds extracted from Costus woodsonii flowers under an ultrasound-assisted mode. The materials were characterized using several physicochemical techniques such as Fourier-transform infrared spectroscopy, X-ray diffraction, Energy-dispersive X-ray spectroscopy, scanning electron microscopy, Raman spectroscopy, and N2 adsorption desorption isotherm measurement. The X-ray diffraction and N2 isotherm plots confirmed the presence of tetragonal γ-Mn3O4 phase and mesoporous structure, respectively. Carbonyl groups derived from flavonoids or carboxylic compounds were found in the surface of green Mn3O4 nanoparticles. The effect of pH, contact time, dose, and concentration on the adsorption of malachite green over green Mn3O4 was carried out. The maximum malachite green adsorption capacity for green Mn3O4 nanoparticles was 101-162 mg g-1. Moreover, kinetic and isotherm adsorption of malachite green obeyed Langmuir (Radj.2 = 0.980-0.995) and pseudo first-order models (Radj.2 = 0.996-1.00), respectively. Adsorption of malachite green over green Mn3O4 was a thermodynamically spontaneous process due to negative Gibbs free energy values (ΔGο < 0). Green Mn3O4 nanoparticles offered a high stability through the FR-IR spectra analysis. With a good recyclability of 4 cycles, green Mn3O4 nanoparticles can be used as potential adsorbent for removing malachite green dye from water.
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Affiliation(s)
- Thuan Van Tran
- Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Viet Nam; NTT Hi-Tech Institute, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Viet Nam
| | - Duyen Thi Cam Nguyen
- Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Viet Nam; NTT Hi-Tech Institute, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Viet Nam
| | - Ponnusamy Senthil Kumar
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai 603110, India
| | - Azam Taufik Mohd Din
- School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus, 14300, Nibong Tebal, Penang, Malaysia
| | - Amjad Saleh Qazaq
- Prince Sattam Bin Abdulaziz University, College of Engineering, Civil Engineering Department, Al Kharj 16273, Saudi Arabia
| | - Dai-Viet N Vo
- Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Viet Nam; School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus, 14300, Nibong Tebal, Penang, Malaysia.
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Song TB, Huang ZH, Niu XQ, Zhang XR, Wei JS, Xiong HM. In-Situ Growth of Mn 3 O 4 Nanoparticles on Nitrogen-Doped Carbon Dots-Derived Carbon Skeleton as Cathode Materials for Aqueous Zinc Ion Batteries. CHEMSUSCHEM 2022; 15:e202102390. [PMID: 35122400 DOI: 10.1002/cssc.202102390] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/11/2021] [Indexed: 06/14/2023]
Abstract
Mn3 O4 is a promising cathode material for aqueous zinc ion batteries (ZIBs) which is a new type of low cost, eco-friendly, high security energy storage system, while those previously reported electrochemical capacities of Mn3 O4 are far from its theoretical value. In this work, Mn3 O4 nanoparticles and nitrogen-doped carbon dots (NCDs) are synthesized together through an in-situ hydrothermal route, and then calcined to be a nanocomposite in which Mn3 O4 nanoparticles are anchored on a nitrogen-doped carbon skeleton (designated as Mn3 O4 /NCDs). Although the carbon content is only 3.9 wt.% in the Mn3 O4 /NCDs, the NCDs-derived carbon skeleton provides an electrically conductive network and a stable structure. Such a special nanocomposite has a large specific surface area, plenty of active sites, excellent hydrophilicity and good electronic conductivity. Owing to these structural merits, the Mn3 O4 /NCDs electrode exhibits a preeminent specific capacity of 443.6 mAh g-1 and 123.3 mAh g-1 at current densities of 0.1 and 1.5 A g-1 in ZIBs, respectively, which are far beyond the bare Mn3 O4 nanoparticles synthesized under the similar condition. The electrochemical measurement results prove that carbon dots, as a new type of carbon nanomaterials, have strong ability to modify and improve the performance of existing electrode materials, which may push these electrode materials forward to practical applications.
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Affiliation(s)
- Tian-Bing Song
- Department of Chemistry and Shanghai Key Laboratory of Molecular, Catalysis and Innovative Materials, Fudan University, Shanghai, 200438, P. R. China
| | - Zun-Hui Huang
- Department of Chemistry and Shanghai Key Laboratory of Molecular, Catalysis and Innovative Materials, Fudan University, Shanghai, 200438, P. R. China
| | - Xiao-Qing Niu
- Department of Chemistry and Shanghai Key Laboratory of Molecular, Catalysis and Innovative Materials, Fudan University, Shanghai, 200438, P. R. China
| | - Xi-Rong Zhang
- Department of Chemistry and Shanghai Key Laboratory of Molecular, Catalysis and Innovative Materials, Fudan University, Shanghai, 200438, P. R. China
| | - Ji-Shi Wei
- Department of Chemistry and Shanghai Key Laboratory of Molecular, Catalysis and Innovative Materials, Fudan University, Shanghai, 200438, P. R. China
| | - Huan-Ming Xiong
- Department of Chemistry and Shanghai Key Laboratory of Molecular, Catalysis and Innovative Materials, Fudan University, Shanghai, 200438, P. R. China
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