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Liu Y, Zhuge X, Liu T, Luo Z, Luo K, Li Y, Ren Y, Bayati M, Liu X. Cold-plasma activation converting conductive agent in spent Li-ion batteries to bifunctional oxygen reduction/evolution electrocatalyst for zinc-air batteries. J Colloid Interface Sci 2024; 665:793-800. [PMID: 38554469 DOI: 10.1016/j.jcis.2024.03.169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 03/04/2024] [Accepted: 03/25/2024] [Indexed: 04/01/2024]
Abstract
Considerable amount of high-value transition metals components can be recycled in spent ternary lithium-ion batteries. In this study, we utilized the conductive agent carbon black, obtained from the leaching waste resulting from the chemical recovery of spent lithium-nickel-manganese-cobalt (NCM) oxide cathode materials. This process allows us to create valuable bifunctional catalysts for the oxygen reduction reaction and oxygen evolution reaction (ORR/OER), facilitated by a facile cold plasma activation method, as a part of lithium batteries circular economy. The activated conductive agent (RCA-30) exhibited an ORR half-wave potential of 0.74 V (vs. RHE) in 0.1 mol/L KOH solution, and an OER overpotential of 360 mV at 10 mA cm-2 in 1 mol/L KOH electrolyte, owing to nitrogen doping of carbon black and activation of surface metal oxides. The complete zinc-air batteries incorporating the activated catalysts at the cathode exhibited an open circuit potential of up to 1.48 V and sustained cycling for 100 h at a current density of 5 mA cm-2. Additionally, the activated catalysts contributed to a power density of 92 mW cm-2 and a full discharge capacity of 640 mAh/g.
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Affiliation(s)
- Yifan Liu
- Jiangsu Province Engineering Research Centre of Intelligent Manufacturing Technology for the New Energy Vehicle Power Battery, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, PR China
| | - Xiangqun Zhuge
- Jiangsu Province Engineering Research Centre of Intelligent Manufacturing Technology for the New Energy Vehicle Power Battery, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, PR China
| | - Tong Liu
- Jiangsu Province Engineering Research Centre of Intelligent Manufacturing Technology for the New Energy Vehicle Power Battery, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, PR China
| | - Zhihong Luo
- College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, PR China
| | - Kun Luo
- Jiangsu Province Engineering Research Centre of Intelligent Manufacturing Technology for the New Energy Vehicle Power Battery, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, PR China.
| | - Yibing Li
- College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, PR China.
| | - Yurong Ren
- Jiangsu Province Engineering Research Centre of Intelligent Manufacturing Technology for the New Energy Vehicle Power Battery, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, PR China
| | - Maryam Bayati
- Department of Mechanical and Construction Engineering, Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne NE1 8QH, UK
| | - Xiaoteng Liu
- Jiangsu Province Engineering Research Centre of Intelligent Manufacturing Technology for the New Energy Vehicle Power Battery, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, PR China; Department of Mechanical and Construction Engineering, Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne NE1 8QH, UK.
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Nabi S, Sofi FA, Jan Q, Bhat AY, Ingole PP, Bayati M, Bhat MA. The enhanced electrocatalytic performance of nanoscopic Cu 6Pd 12Fe 12 heterometallic molecular box encaged cytochrome c. Nanoscale 2023; 16:411-426. [PMID: 38073595 DOI: 10.1039/d3nr03451h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
Designing molecular cages for atomic/molecular scale guests is a special art used by material chemists to harvest the virtues of the otherwise vile idea known as "the cage". In recent years, there has been a notable surge in research investigations focused on the exploration and utilization of the distinct advantages offered by this art in the advancement of efficient and stable bio-electrocatalysts. This usually is achieved through encapsulation of biologically accessible redox proteins within specifically designed molecular cages and matrices. Herein, we present the first successful method for encaging cytochrome c (Cyt-c), a clinically significant enzyme system, inside coordination-driven self-assembled Cu6Pd12Fe12 heterometallic hexagonal molecular boxes (Cu-HMHMB), in order to create a Cyt-c@Cu-HMHMB composite. 1H NMR, FTIR, and UV-Vis spectroscopy, ICP-MS, TGA and voltammetric investigations carried out on the so-crafted Cyt-c@Cu-HMHMB bio-inorganic composite imply that the presented strategy ensures encaging of Cyt-c in a catalytically active, electrochemically stable and redox-accessible state inside the Cu-HMHMB. Cyt-c@Cu-HMHMB is demonstrated to exhibit excellent stability and electrocatalytic activity toward very selective, sensitive electrochemical sensing of nitrite exhibiting a limit of detection as low as 32 nanomolar and a sensitivity of 7.28 μA μM-1 cm-2. Importantly, Cyt-c@Cu-HMHMB is demonstrated to exhibit an excellent electrocatalytic performance toward the 4ē pathway oxygen reduction reaction (ORR) with an onset potential of 0.322 V (vs. RHE) and a Tafel slope of 266 mV dec-1. Our findings demonstrate that Cu-HMHMB is an excellent matrix for Cyt-c encapsulation. We anticipate that the entrapment-based technique described here will be applicable to other enzyme systems and Cyt-c for various electrochemical and other applications.
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Affiliation(s)
- Shazia Nabi
- Department of Chemistry, University of Kashmir, Srinagar-190006, J & K, India.
| | - Feroz Ahmad Sofi
- Department of Chemistry, University of Kashmir, Srinagar-190006, J & K, India.
| | - Qounsar Jan
- Department of Chemistry, University of Kashmir, Srinagar-190006, J & K, India.
| | - Aamir Y Bhat
- Department of Chemistry, Indian Institute of Technology (IIT) Delhi, New Delhi 110016, India
| | - Pravin P Ingole
- Department of Chemistry, Indian Institute of Technology (IIT) Delhi, New Delhi 110016, India
| | - Maryam Bayati
- Department of Mechanical & Construction Engineering, Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne, NE1 8ST, UK
| | - Mohsin Ahmad Bhat
- Department of Chemistry, University of Kashmir, Srinagar-190006, J & K, India.
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Karbasy SH, Sabertanha A, Bayati M, Meshkini A, Fatemeh Shakhs Emampour B. Study of the effect of added bronchoscopic suction to routine treatment of ventilator associated pneumonia patients in surgical ICU. J PAK MED ASSOC 2021; 71:1326-1331. [PMID: 34091608 DOI: 10.47391/jpma.1086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
OBJECTIVE Comparing BAL and antibiotic therapy with antibiotic therapy itself for treating VAP patients in ICU. METHODS In this randomized clinical trial, the first group was treated using antibiotics and closed-suction was performed daily, using 50 cc of sterile normal saline. The second group was treated with antibiotics and daily closed-suction with 50 cc of sterile normal saline, plus bronchoscopic suction every other day. Patients of both groups were followed and investigated one, 3, 7, and 10 days after initial diagnosis. RESULTS Mean blood leukocyte count and body temperature was measured in groups one (no bronchoscopy) and two (with bronchoscopy) in first, 3rd, 7th, and 10th days which was higher in the second group. Mean treatment status was also measured using APACHE II index. There was also a statistically significant difference in 3rd day (p-value < 0.05). There was also no difference in final culture result or mortality rate between two groups. CONCLUSIONS According to the results of this study like lower body temperature, higher leukocyte count reduction, and lower APACHE II scores in the second group, treated with bronchoscopic suction, adding bronchoscopy seems to be more useful than normal method.
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Affiliation(s)
| | - Amir Sabertanha
- Department of Anesthesiology, Birjand University of Medical Sciences, Iran
| | - Maryam Bayati
- Department of Anesthesiology, Birjand University of Medical Sciences, Iran
| | - Aram Meshkini
- Department of Anesthesiology, Birjand University of Medical Sciences, Iran
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Bayati M, Molavynejad S, Taheri N, Cheraghian B. Investigating the effect of Integrated Educational Program on the Quality of Life among Cancer Patients: A Clinical Trial Study. Asian Pac J Cancer Prev 2019; 20:3457-3463. [PMID: 31759372 PMCID: PMC7063000 DOI: 10.31557/apjcp.2019.20.11.3457] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Indexed: 01/31/2023] Open
Abstract
Background: cancer is one of the most common causes of death around the world. The process of this disease and the resulting complications reduce the quality of life of cancer patients. Taking the necessary measures for improving the quality of life of these patients seems to be essential. This study was performed to investigate the effect of integrated educational program on the quality of life of cancer patients. Methods: in this clinical trial study, 64 patients hospitalized in the specialized cancer hospital affiliated with Ahvaz Jundishapur University of Medical Sciences, Iran, were selected according to the inclusion criteria. Then, through blocked randomization method, they were assigned into intervention and control groups. The intervention group received the necessary trainings over four 60-min sessions (one session per week). The data collection in this study included demographic questionnaire and quality-of-life questionnaire of cancer patients (QLQ-C30). The quality of life was examined before the training as well as one and two months after the training. The data were analyzed by SPSS 20. Independent t-test was used to compare the means of the life quality dimensions of the studied groups. Results: all of the functional dimensions [physical, role function, emotional, cognitive, social(P≤0.05)] and symptomatic [fatigue, nausea and vomiting, pain, dyspnea, sleep disorders, diminished appetite, constipation, and diarrhea (P≤0.05)] of the quality of life of the intervention group increased significantly one and two months after running the integrated educational program. Conclusion: integrated training causes improved symptoms and enhanced quality of life in cancer patients. Thus, it is recommended that integrated training be conducted alongside the routine care of cancer patients. This can improve the therapeutic outcomes, and also highlights the important role of nurses as well as nursing cares.
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Affiliation(s)
- Maryam Bayati
- Nursing Care Research Center in Chronic Diseases, School of Nursing and Midwifery, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Shahram Molavynejad
- Nursing Care Research Center in Chronic Diseases, School of Nursing and Midwifery, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | | | - Bahman Cheraghian
- Department of Epidemiology and Biostatistics, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Affiliation(s)
| | - Keith Scott
- CEAM; Newcastle University; Newcastle upon Tyne UK
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Haresabadi M, Bibak B, Hosein zadeh E, Bayati M, Arki M, Akbari H. Assessing burden of family caregivers of patients with schizophrenia Admitted in IMAM REZA hospital- Bojnurd 2010. ACTA ACUST UNITED AC 2012. [DOI: 10.29252/jnkums.4.2.165] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Bayati M, Valizadeh A. Effect of synaptic plasticity on the structure and dynamics of disordered networks of coupled neurons. Phys Rev E Stat Nonlin Soft Matter Phys 2012; 86:011925. [PMID: 23005470 DOI: 10.1103/physreve.86.011925] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2012] [Revised: 06/08/2012] [Indexed: 06/01/2023]
Abstract
In an all-to-all network of integrate-and-fire neurons in which there is a disorder in the intrinsic oscillatory frequencies of the neurons, we show that through spike-timing-dependent plasticity the synapses which have the high-frequency neurons as presynaptic tend to be potentiated while the links originated from the low-frequency neurons are weakened. The emergent effective flow of directed connections introduces the high-frequency neurons as the more influential elements in the network and facilitates synchronization by decreasing the synaptic cost for onset of synchronization.
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Affiliation(s)
- M Bayati
- Institute for Advanced Studies in Basic Sciences, PO Box 45195-1159, Zanjan, Iran
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Abstract
Fabrication of tailored nanomaterials with desired structure and properties is the greatest challenge of modern nanotechnology. Herein, we describe a wet chemical method for the preparation of large area metal nanoring arrays. This method is based on self-assembly of polystyrene sphere template on a flat substrate and wicking/reducing metal precursor into the interstices between the template and the substrate. In this article, platinum, gold, and copper nanorings were fabricated by applying 505 nm polystyrene spheres onto highly oriented pyrolytic graphite (HOPG) and Si(100) substrates, followed by reducing the templated metal salt with NaBH(4). AFM images reveal formation of arrays of metal nanorings comprising metal nanoparticles with the average ring height of 5.7 +/- 0.8 nm and diameter of 167.3 +/- 8.9 nm. XPS confirms that these structures are metallic.
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Affiliation(s)
- Maryam Bayati
- Laboratoire des Matériaux, Surfaces et Procèdes pour la Catalyse, UMR 7515 CNRS-UdS-ECPM, Université de Strasbourg, 67087, Strasbourg, France
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Ruvinskiy PS, Bonnefont A, Bayati M, Savinova ER. Mass transport effects in CO bulk electrooxidation on Pt nanoparticles supported on vertically aligned carbon nanofilaments. Phys Chem Chem Phys 2010; 12:15207-16. [DOI: 10.1039/c0cp00593b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bayati M, Abad JM, Bridges CA, Rosseinsky MJ, Schiffrin DJ. Size control and electrocatalytic properties of chemically synthesized platinum nanoparticles grown on functionalised HOPG. J Electroanal Chem (Lausanne) 2008. [DOI: 10.1016/j.jelechem.2008.06.011] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
The minimum weight Steiner tree (MST) is an important combinatorial optimization problem over networks that has applications in a wide range of fields. Here we discuss a general technique to translate the imposed global connectivity constrain into many local ones that can be analyzed with cavity equation techniques. This approach leads to a new optimization algorithm for MST and allows us to analyze the statistical mechanics properties of MST on random graphs of various types.
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Affiliation(s)
- M Bayati
- Microsoft Research, One Microsoft Way, 98052 Redmond, Washington, USA
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Abstract
Fullerene-Pt nanoparticle assemblies were prepared by attachment and immobilisation of different Pt nanoparticles on a gold electrode using molecular layers of C60 as a linker system. These assemblies were active for the methanol oxidation following treatment with CO.
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Affiliation(s)
- C Roth
- Centre for Nanoscale Science, Department of Chemistry, The University of Liverpool, Liverpool, UKL69 7ZD.
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