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Rajeshkumar S, Jayakodi S, Tharani M, Alharbi NS, Thiruvengadam M. Antimicrobial activity of probiotic bacteria-mediated cadmium oxide nanoparticles against fish pathogens. Microb Pathog 2024; 189:106602. [PMID: 38408546 DOI: 10.1016/j.micpath.2024.106602] [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] [Received: 12/27/2023] [Revised: 02/23/2024] [Accepted: 02/24/2024] [Indexed: 02/28/2024]
Abstract
The current research was designed to investigate the antibacterial activity of probiotic bacteria mediated cadmium oxide nanoparticles (CdO NPs) on common fish pathogenic bacteria like Serratia marcescens, Aeromonas hydrophila, Vibrio harveyi, and V. parahaemolyticus. CdO NPs were synthesized using probiotic bacteria as follows: Lactobacillus species with different precursor of cadmium sulfate concentrations (5, 10, and 20 mM). The average crystalline sizes of the CdO NPs were determined based on the XRD patterns using the Debye-Scherrer equation for different precursor concentrations. Specifically, sizes of 40, 48, and 67 nm were found at concentrations of 5, 10, and 20 mM, respectively. The antibacterial efficacy of CdO NPs was estimated using a well diffusion assay, which demonstrated the best efficacy of 20 mM CdO NPs against all pathogens. AFM analysis of nanoparticle-treated and untreated biofilms was performed to further validate the antibacterial effect. Antibacterial activity of CdO nanoparticles synthesized at varying concentrations (5, 10, and 20 mM) against fish pathogens (S. marcescens, A. hydrophila, V. harveyi, and V. parahaemolyticus). The results indicated the highest inhibitory effect of 20 mM CdO NPs across all concentrations (30, 60, and 90 μg/mL), demonstrating significant inhibition against S. marcescens. These findings will contribute to the development of novel strategies for combating aquatic diseases and advancing aquaculture health management practices.
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Affiliation(s)
- Shanmugam Rajeshkumar
- Nanobiomedicine Lab, Centre for Global Health Research, Saveetha Medical College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai, 602105, Tamil Nadu, India.
| | - Santhoshkumar Jayakodi
- Department of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Science (SIMATS), Chennai, 602105, Tamil Nadu, India
| | - M Tharani
- Nanobiomedicine Lab, Centre for Global Health Research, Saveetha Medical College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai, 602105, Tamil Nadu, India
| | - Naiyf S Alharbi
- Department of Botany and Microbiology, College of Science, King Saud University, P. O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Muthu Thiruvengadam
- Department of Applied Bioscience, College of Life and Environmental Science, Konkuk University, Seoul, 05029, Republic of Korea.
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Prakash R, Maurya IC, Srivastava P, Mondal S, Ray B, Maiti P. Functionalized polyurethane composite gel electrolyte with cosensitized photoanode for higher solar cell efficiency using a passivation layer. NANOSCALE ADVANCES 2022; 4:1199-1212. [PMID: 36131776 PMCID: PMC9419732 DOI: 10.1039/d1na00801c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 01/12/2022] [Indexed: 06/15/2023]
Abstract
Graphene oxide was chemically tagged with thermoplastic polyurethane, chain extended using butanediol to obtain the varying molecular weight of the polymer. Graphene-tagged polyurethane was functionalized using propane sultone to introduce the polar sulphonate groups in the main chain. The chain extension, tagging of GO and functionalization have been verified through spectroscopic techniques such as NMR, FTIR, UV and gel permeation chromatography. Thermal stability and the nature of the interaction were explored through thermal measurements to understand the effect of GO and functionalization. Electrical conduction was improved by the chemical attachment of graphene with the polymer (5.08 × 10-7 S cm-1), which further increases through functionalization and subsequent use of the additive (1.07 × 10-3 S cm-1) and make them suitable for gel electrolyte, being in the range of semiconductors. Quantum dots of CdS and CdSe were prepared using a capping agent and their characteristic properties and dimensions were worked out for their suitability as active materials in a solar cell. The optical band gap of quantum dots and HOMO/LUMO band structure of functionalized polyurethanes were measured using UV-vis and cyclic voltammetry, and thereby, constructing the overall energy diagrams for a possible combination of materials. Conducting carbon has been incorporated in the gel electrolyte to modulate the conductivity, while the ZnSe layer has been inserted as a passivation layer between the active material and the gel electrolyte. Solar cell devices were fabricated using the suitable materials, through the suitable energy diagram, and found a significantly high power conversion efficiency of 1.71%. The reason behind the improved efficiency is understood from the greater light harvesting behaviour, higher level of conductivity and blocking capacity of the various layered structures to reduce the electron-hole pair recombination.
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Affiliation(s)
- Ravi Prakash
- School of Materials Science and Technology, Indian Institute of Technology (BHU) Varanasi-221005 India
| | - Ishwar Chandra Maurya
- Department of Chemistry, Institute of Science, Banaras Hindu University Varanasi-221005 India
| | - Pankaj Srivastava
- Department of Chemistry, Institute of Science, Banaras Hindu University Varanasi-221005 India
| | - Sourov Mondal
- Department of Chemistry, Institute of Science, Banaras Hindu University Varanasi-221005 India
| | - Biswajit Ray
- Department of Chemistry, Institute of Science, Banaras Hindu University Varanasi-221005 India
| | - Pralay Maiti
- School of Materials Science and Technology, Indian Institute of Technology (BHU) Varanasi-221005 India
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Devendran P, Selvakumar D, Ramadoss G, Sivaramakrishnan R, Alagesan T, Jayavel R, Pandian K. A novel visible light active rare earth doped CdS nanoparticles decorated reduced graphene oxide sheets for the degradation of cationic dye from wastewater. CHEMOSPHERE 2022; 287:132091. [PMID: 34523436 DOI: 10.1016/j.chemosphere.2021.132091] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 08/09/2021] [Accepted: 08/27/2021] [Indexed: 06/13/2023]
Abstract
A variety of rare earth metals (La, Sm, Nd, Ce, Gd) doped cadmium sulfide (RE-CdS) grafted reduced graphene oxide (G) sheet nanocomposites estimated imperative attention due to their visible light-driven, tunable band gap and high surface to volume ratio were investigated for the photocatalytic degradation of cationic dye from aqueous solution. The formation of wurtzite (hexagonal) crystal structures of cadmium sulfide nanoparticles (NPs) was confirmed by Powder X-ray diffraction spectra and the average crystallite size was determined to be 10 ± 2 nm. HRTEM analysis confirmed the homogeneous distribution of RE-CdS NPs over the G sheets. The photocatalytic behaviour of the RE-CdS decorated G sheets was studied using a textile dye methylene blue (MB) under sunlight. The result indicates that among the various RE-CdS nanocomposites studied, Cerium-cadmium sulfide-reduced graphene oxide (Ce-CdS-G) shows highest MB degradation of 99.0 ± 0.4% within 90 min under sunlight. The result confirms that RE-CdS-G nanocatalyst efficiently accelerates the separation and slows down the recombination rate in photo excited charge carriers. The catalytic activity was retained over 80% of its original value even after four successive runs and the present method can be employed for the large-scale synthesis of RE-CdS-G nanocatalyst.
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Affiliation(s)
- Pazhanivel Devendran
- Department of Physics, International Research Centre, Kalasalingam Academy of Research and Education, Krishnankoil, 626126, Tamil Nadu, India.
| | - Duraisamy Selvakumar
- Research and Development Centre, Sri Krishna College of Engineering and Technology, Coimbatore, 641008, India; Centre for Nanoscience and Technology, Anna University, Chennai, 600 025, India
| | - Govindarajan Ramadoss
- School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur, 613401, India
| | - Ramachandran Sivaramakrishnan
- Laboratory of Cyanobacterial Biotechnology, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | | | - Ramasamy Jayavel
- Centre for Nanoscience and Technology, Anna University, Chennai, 600 025, India
| | - Kannaiyan Pandian
- Department of Inorganic Chemistry, Guindy Campus University of Madras, Chennai, 600 025, India
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Ali ZI, Ebraheem O, Saleh HH, Salam FHA, Sokary R. In situ
preparation of CdS/PVA nanocomposites using gamma radiation. POLYM ENG SCI 2015. [DOI: 10.1002/pen.24151] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Zakaria I. Ali
- National Center for Radiation Research and Technology, Atomic Energy Authority; Nasr City Cairo Egypt
| | - Omayma Ebraheem
- Faculty of Science (Girls), Al-Azhar University; Nasr City Cairo Egypt
| | - Hoda H. Saleh
- National Center for Radiation Research and Technology, Atomic Energy Authority; Nasr City Cairo Egypt
| | | | - Rehab Sokary
- National Center for Radiation Research and Technology, Atomic Energy Authority; Nasr City Cairo Egypt
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Mbese JZ, Ajibade PA. Synthesis, structural and optical properties of ZnS, CdS and HgS nanoparticles from dithiocarbamato single molecule precursors. J Sulphur Chem 2014. [DOI: 10.1080/17415993.2014.912280] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ajibade PA, Ejelonu BC. Group 12 dithiocarbamate complexes: synthesis, spectral studies and their use as precursors for metal sulfides nanoparticles and nanocomposites. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 113:408-414. [PMID: 23747381 DOI: 10.1016/j.saa.2013.04.113] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2013] [Revised: 04/14/2013] [Accepted: 04/24/2013] [Indexed: 06/02/2023]
Abstract
Zn(II), Cd(II) and Hg(II) dithiocarbamate complexes have been synthesized and characterized by elemental analysis, thermogravimetric analysis, UV-Vis, FTIR, (1)H- and (13)C NMR spectroscopy. The complexes were thermolysed at 180 °C and used as single molecule precursors for the synthesis of HDA capped ZnS, CdS and HgS nanoparticles and polymethylmethacrylate (PMMA) nanocomposites. The optical and structural properties of the nanoparticles and nanocomposites were studied by UV-Vis, PL, XRD and SEM. The crystallites sizes of the nanoparticles varied between 3.03 and 23.45 nm. SEM and EDX analyses of the nanocomposites confirmed the presence of the nanoparticles in the polymer matrix.
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Affiliation(s)
- Peter A Ajibade
- Department of Chemistry, University of Fort Hare, Private Bag X1314, Alice 5700, South Africa.
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Agarwal S, Patidar D, Saxena N. Study on glass transition temperature and mechanical properties of cadmium sulfide/polystyrene nanocomposites. POLYM ENG SCI 2012. [DOI: 10.1002/pen.23382] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Sundarrajan P, Eswaran P, Marimuthu A, Subhadra LB, Kannaiyan P. One Pot Synthesis and Characterization of Alginate Stabilized Semiconductor Nanoparticles. B KOREAN CHEM SOC 2012. [DOI: 10.5012/bkcs.2012.33.10.3218] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Maillard D, Kumar SK, Fragneaud B, Kysar JW, Rungta A, Benicewicz BC, Deng H, Brinson LC, Douglas JF. Mechanical properties of thin glassy polymer films filled with spherical polymer-grafted nanoparticles. NANO LETTERS 2012; 12:3909-14. [PMID: 22817546 DOI: 10.1021/nl301792g] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
It is commonly accepted that the addition of spherical nanoparticles (NPs) cannot simultaneously improve the elastic modulus, the yield stress, and the ductility of an amorphous glassy polymer matrix. In contrast to this conventional wisdom, we show that ductility can be substantially increased, while maintaining gains in the elastic modulus and yield stress, in glassy nanocomposite films composed of spherical silica NPs grafted with polystyrene (PS) chains in a PS matrix. The key to these improvements are (i) uniform NP spatial dispersion and (ii) strong interfacial binding between NPs and the matrix, by making the grafted chains sufficiently long relative to the matrix. Strikingly, the optimal conditions for the mechanical reinforcement of the same nanocomposite material in the melt state is completely different, requiring the presence of spatially extended NP clusters. Evidently, NP spatial dispersions that optimize material properties are crucially sensitive to the state (melt versus glass) of the polymeric material.
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Affiliation(s)
- Damien Maillard
- Department of Chemical Engineering, Columbia University, New York, New York, USA
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Rahmansyah N, Lo CT, Syu CM, Lee CL. Non-isothermal crystallization of poly(ethylene oxide)/silver nanoplate composites. POLYM INT 2011. [DOI: 10.1002/pi.3091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Wang D, Zhang Z, Yuan Q, Dong Z, Xiao C. The isothermal crystallization kinetics of ethyl cellulose /poly(ethylene oxide)/ ethyl cellulose sandwich films. JOURNAL OF POLYMER RESEARCH 2009. [DOI: 10.1007/s10965-009-9365-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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