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Yan T, Cao S, Shi Y, Huang L, Ou Y, Gong RH. Multi-Functional Electrospun AgNO 3/PVB and Its Ag NP/PVB Nanofiber Membrane. Molecules 2023; 28:6157. [PMID: 37630409 PMCID: PMC10459384 DOI: 10.3390/molecules28166157] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/10/2023] [Accepted: 08/16/2023] [Indexed: 08/27/2023] Open
Abstract
This study focuses on the fabrication of fiber membranes containing different concentrations of AgNO3 via the electrospinning technique. The AgNO3 present in the fibers is subsequently reduced to silver nanoparticles (Ag NPs) through UV irradiation. The resulting nanofiber film is characterized using scanning electron microscopy, X-ray diffraction, and evaluations of its anti-UV and anti-electromagnetic radiation properties. Experimental results demonstrate that increasing the AgNO3 content initially decreases and then increases the fiber diameter and fiber diameter deviation. Under UV light, the nanofibers fuse and bond, leading to an increase in the fiber diameter. AgNO3 is effectively reduced to Ag NPs after UV irradiation for more than 60 min, as confirmed by the characteristic diffraction peaks of Ag NPs in the XRD spectrum of the irradiated AgNO3/PVB fibers. The nanofiber film containing AgNO3 exhibits superior anti-UV performance compared to the film containing AgNO3-derived Ag NPs. The anti-electromagnetic radiation performances of the nanofiber films containing AgNO3 and AgNO3-derived Ag NPs are similar, but the nanofiber film containing AgNO3-derived Ag NPs exhibits higher performance at approximately 2.5 GHZ frequency. Additionally, at an AgNO3 concentration of less than 0.5 wt%, the anti-electromagnetic radiation performance is poor, and the shielding effect of the nanofiber film on medium- and low-frequency electromagnetic waves surpasses that on high-frequency waves. This study provides guidance for the preparation of polyvinyl butyral nanofibers, Ag NPs, and functional materials with anti-ultraviolet and anti-electromagnetic radiation properties.
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Affiliation(s)
- Taohai Yan
- Fujian Key Laboratory of Novel Functional Textile Fibers and Materials, Minjiang University, Fuzhou 350108, China; (T.Y.); (Y.S.); (Y.O.)
| | - Shengbin Cao
- School of Materials, Shanghai Dianji University, Shanghai 201306, China
| | - Yajing Shi
- Fujian Key Laboratory of Novel Functional Textile Fibers and Materials, Minjiang University, Fuzhou 350108, China; (T.Y.); (Y.S.); (Y.O.)
| | - Luming Huang
- Department of Materials, University of Manchester, Manchester M13 9PL, UK; (L.H.); (R.H.G.)
| | - Yang Ou
- Fujian Key Laboratory of Novel Functional Textile Fibers and Materials, Minjiang University, Fuzhou 350108, China; (T.Y.); (Y.S.); (Y.O.)
| | - R. Hugh Gong
- Department of Materials, University of Manchester, Manchester M13 9PL, UK; (L.H.); (R.H.G.)
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Fayadoglu M, Fayadoglu E, Er S, Koparal AT, Koparal AS. Determination of biological activities of nanoparticles containing silver and copper in water disinfection with/without ultrasound technique. J Environ Health Sci Eng 2023; 21:73-83. [PMID: 37159741 PMCID: PMC10163176 DOI: 10.1007/s40201-022-00839-6] [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] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 08/30/2022] [Accepted: 10/12/2022] [Indexed: 05/11/2023]
Abstract
The final and most crucial step in obtaining clean water is disinfection. More innovative methods of water disinfection have recently been sought. Water disinfection is a promising application for nanoparticles as disinfectants. As a contribution to the literature, biofilm and metal-containing nanoparticles as antiadhesion inhibitors were used in conjunction with ultrasound in this study. The microbroth dilution test was used to reveal the microbiological antibacterial activities of different concentrations of AgNO3 and CuCl2 containing nanoparticles against the Escherichia coli ATCC 25,922 strain, which is an indicator bacterium in water systems. Antibiofilm activities were then investigated using biofilm attachment and biofilm inhibition tests. The inhibitory effect of nanoparticle ultrasonic waves on biofilm contamination was determined using a novel approach. Human keratinocyte cells (HaCaT cell line) were used in cell culture studies after water disinfection, and their cytotoxic effects were demonstrated using the MTT assay. The findings suggest that the nanoparticles utilized might be a viable choice for water disinfection applications. Furthermore, employing ultrasound at low doses with nanoparticles resulted in greater results. One feasible option is to employ nanoparticles to cleanse water without producing cytotoxicity.
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Affiliation(s)
- Mustafa Fayadoglu
- Stem Cell Institute, Ankara University, TR-06100 Ankara, Turkey
- Institute of Graduate Programs, Department of Advanced Technologies, Programme of Biotechnology, Eskişehir Technical University, Eskişehir, Turkey
| | - Elif Fayadoglu
- Institute of Graduate Programs Department of Biology, Programme of Molecular Biology, Eskişehir Technical University, 26470 Tepebaşı, Eskişehir Turkey
| | - Sevda Er
- Yunus Emre Vocational School of Health Services, Department of Pharmacy, Anadolu University, Eskişehir, Turkey
| | - A Tansu Koparal
- Yunus Emre Vocational School of Health Services, Department of Medical Services and Techniques, Anadolu University, Eskişehir, Turkey
| | - A Savas Koparal
- Open Education Faculty, Anadolu University, Eskişehir, Turkey
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Markuniene I, Rabiei M, Nasiri S, Urbaite S, Palevicius A, Janusas G. Biocompatible Piezoelectric PVDF/HA/AgNO 3 Thin Film Prepared by the Solvent Casting Method. Sensors (Basel) 2022; 23:289. [PMID: 36616887 PMCID: PMC9823978 DOI: 10.3390/s23010289] [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] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/22/2022] [Accepted: 12/26/2022] [Indexed: 06/17/2023]
Abstract
In this study, new composites based on polyvinylidene fluoride (PVDF) were ornamented and prepared with hydroxyapatite (HA) and silver nitride (AgNO3). Taking into account the polarity of the solvent dimethyl sulfoxide, this solvent was used to disperse the particles. The aim of using DMSO was to create amorphous phases and the strong dipoles of the C-F bond to reduce the energy barrier and improve the electrical properties. The PVDF played the role of matrix in HA, and AgNO3 was used as reinforcing elements. X-ray diffraction of the samples directly showed the amorphous phase and mixed amorphous and crystalline phases when all three materials were used simultaneously for preparing the composite. The scanning electron microscopy (SEM) images of the samples confirmed the role of PVDF, HA, and AgNO3. Furthermore, the energy dispersive X-ray (EDX) analysis was performed and proved that the HA structure did not change when the ratio of CaP was equal to the ratio of natural HA. The electrical properties were investigated, and the amount of energy ranged from 56.50 to 125.20 mV. The final results showed that a designed device consisting of an active layer made of 0.1 g HA:0.5 g PVDF showed the highest energy barrier, the highest polarity, and surface energy, thus proving its relevance as potential material for energy harvesting applications.
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Sarkar S, Shekoofa A, McClure A, Gillman JD. Phenotyping and Quantitative Trait Locus Analysis for the Limited Transpiration Trait in an Upper-Mid South Soybean Recombinant Inbred Line Population ("Jackson" × "KS4895"): High Throughput Aquaporin Inhibitor Screening. Front Plant Sci 2022; 12:779834. [PMID: 35126412 PMCID: PMC8811256 DOI: 10.3389/fpls.2021.779834] [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] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Accepted: 12/09/2021] [Indexed: 06/14/2023]
Abstract
Soybean is most often grown under rainfed conditions and negatively impacted by drought stress in the upper mid-south of the United States. Therefore, identification of drought-tolerance traits and their corresponding genetic components are required to minimize drought impacts on productivity. Limited transpiration (TRlim) under high vapor pressure deficit (VPD) is one trait that can help conserve soybean water-use during late-season drought. The main research objective was to evaluate a recombinant inbred line (RIL) population, from crossing two mid-south soybean lines ("Jackson" × "KS4895"), using a high-throughput technique with an aquaporin inhibitor, AgNO3, for the TRlim trait. A secondary objective was to undertake a genetic marker/quantitative trait locus (QTL) genetic analysis using the AgNO3 phenotyping results. A set of 122 soybean genotypes (120-RILs and parents) were grown in controlled environments (32/25-d/n °C). The transpiration rate (TR) responses of derooted soybean shoots before and after application of AgNO3 were measured under 37°C and >3.0 kPa VPD. Then, the decrease in transpiration rate (DTR) for each genotype was determined. Based on DTR rate, a diverse group (slow, moderate, and high wilting) of 26 RILs were selected and tested for the whole plant TRs under varying levels of VPD (0.0-4.0 kPa) at 32 and 37°C. The phenotyping results showed that 88% of slow, 50% of moderate, and 11% of high wilting genotypes expressed the TRlim trait at 32°C and 43, 10, and 0% at 37°C, respectively. Genetic mapping with the phenotypic data we collected revealed three QTL across two chromosomes, two associated with TRlim traits and one associated with leaf temperature. Analysis of Gene Ontologies of genes within QTL regions identified several intriguing candidate genes, including one gene that when overexpressed had previously been shown to confer enhanced tolerance to abiotic stress. Collectively these results will inform and guide ongoing efforts to understand how to deploy genetic tolerance for drought stress.
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Affiliation(s)
- Sayantan Sarkar
- Department of Plant Sciences, University of Tennessee, Knoxville, TN, United States
| | - Avat Shekoofa
- Department of Plant Sciences, University of Tennessee, Knoxville, TN, United States
| | - Angela McClure
- Department of Plant Sciences, University of Tennessee, Knoxville, TN, United States
| | - Jason D Gillman
- Plant Genetics Research Unit, USDA-ARS, University of Missouri, Columbia, MO, United States
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Yen CK, Dutt K, Yao YS, Wu WJ, Shiue YL, Pan CT, Chen CW, Chen WF. Development of Flexible Biceps Tremors Sensing Chip of PVDF Fibers with Nano-Silver Particles by Near-Field Electrospinning. Polymers (Basel) 2022; 14:polym14020331. [PMID: 35054737 PMCID: PMC8780690 DOI: 10.3390/polym14020331] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/08/2022] [Accepted: 01/11/2022] [Indexed: 12/04/2022] Open
Abstract
Polyvinylidene fluoride (PVDF) and AgNO3/PVDF composite piezoelectric fibers were prepared using near-field electrospinning technology. The prepared fibers are attached to the electrode sheet and encapsulated with polydimethylsiloxane to create an energy acquisition device and further fabricated into a dynamic sensing element. The addition of AgNO3 significantly increased the conductivity of the solution from 40.33 μS/cm to 883.59 μS/cm, which in turn made the fiber drawing condition smoother with the increase of high voltage electric field and reduced the fiber wire diameter size from 0.37 μm to 0.23 μm. The tapping test shows that the voltage signal can reach ~0.9 V at a frequency of 7 Hz, and the energy conversion efficiency is twice that of the PVDF output voltage. The addition of AgNO3 effectively enhances the molecular bonding ability, which effectively increases the piezoelectric constants of PVDF piezoelectric fibers. When the human body is exercised for a long period of time and the body is overloaded, the biceps muscle is found to produce 8 to 16 tremors/second through five arm flexion movements. The voltage output of the flexible dynamic soft sensor is between 0.7–0.9 V and shows an orderly alternating current waveform of voltage signals. The sensor can be used to detect muscle tremors after high-intensity training and to obtain advance information about changes in the symptoms of fasciculation, allowing for more accurate diagnosis and treatment.
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Affiliation(s)
- Chung-Kun Yen
- Department of Mechanical and Electro-Mechanical Engineering, National Sun Yat-sen University, Kaohsiung 80424, Taiwan; (C.-K.Y.); (K.D.); (C.-T.P.)
- Department of Mechanical and Automation Engineering, I-Shou University, Kaohsiung 84001, Taiwan
| | - Karishma Dutt
- Department of Mechanical and Electro-Mechanical Engineering, National Sun Yat-sen University, Kaohsiung 80424, Taiwan; (C.-K.Y.); (K.D.); (C.-T.P.)
| | - Yu-Syuan Yao
- Institute of Biomedical Sciences, National Sun Yat-sen University, Kaohsiung 80424, Taiwan; (Y.-S.Y.); (Y.-L.S.)
| | - Wen-Jeng Wu
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80756, Taiwan;
- Department of Urology, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
- Department of Urology, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung 80145, Taiwan
- Center for Stem Cell Research, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
| | - Yow-Ling Shiue
- Institute of Biomedical Sciences, National Sun Yat-sen University, Kaohsiung 80424, Taiwan; (Y.-S.Y.); (Y.-L.S.)
- Institute of Precision Medicine, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Cheng-Tang Pan
- Department of Mechanical and Electro-Mechanical Engineering, National Sun Yat-sen University, Kaohsiung 80424, Taiwan; (C.-K.Y.); (K.D.); (C.-T.P.)
- Institute of Precision Medicine, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Chi-Wen Chen
- Department of Orthopaedics, Kaohsiung Armed Forces General Hospital, Kaohsiung 80284, Taiwan
- Correspondence: (C.-W.C.); (W.-F.C.)
| | - Wen-Fan Chen
- Institute of Medical Science and Technology, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
- Correspondence: (C.-W.C.); (W.-F.C.)
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Chanda D, Dudefoi W, Anadu J, Minghetti M. Evaluation of the effect of silver and silver nanoparticles on the function of selenoproteins using an in-vitro model of the fish intestine: The cell line RTgutGC. Ecotoxicol Environ Saf 2021; 211:111930. [PMID: 33472113 DOI: 10.1016/j.ecoenv.2021.111930] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 12/21/2020] [Accepted: 01/10/2021] [Indexed: 06/12/2023]
Abstract
Emerging research in mammalian cells suggests that ionic (AgNO3) and nano silver (AgNP) can disrupt the metabolism of selenium which plays a vital role in oxidative stress control. However, the effect of silver (Ag) on selenoprotein function in fish is poorly understood. Here we evaluate the effects of AgNO3 and citrate coated AgNP (cit-AgNP) on selenoprotein function and oxidative stress using a fish cell line derived from the rainbow trout (Oncorhynchus mykiss) intestine (RTgutGC). Cell viability was evaluated using a cytotoxicity assay which measures simultaneously metabolic activity, membrane integrity and lysosome integrity. Cells exposed to equimolar amounts of AgNO3 and cit-AgNP accumulated the same amount of silver intracellularly, however AgNO3 was more toxic than cit-AgNP. Selenoenzymes glutathione peroxidase (GPx) and thioredoxin reductase (TrxR) mRNA levels and enzyme activity were measured. While mRNA levels remained unaffected by AgNO3 or cit-AgNP, the enzyme activity of GPx was inhibited by AgNO3 (1 µM) and cit-AgNP (5 µM) and TrxR activity was inhibited by AgNO3 (0.4 µM) and cit-AgNP (1, 5 µM). Moreover, cells exposed to 1 µM of AgNO3 and cit-AgNP showed an increase in metallothionein b (MTb) mRNA levels at 24 h of exposure, confirming the uptake of silver, but returned to control levels at 72 h suggesting silver scavenging by MTb. Oxidative stress was not observed at any of the doses of AgNO3 or cit-AgNP tested. Overall, this study shows that AgNO3 or cit-AgNP can inhibit the activity of selenoenzymes but do not induce oxidative stress in RTgutGC cells.
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Affiliation(s)
- Debarati Chanda
- Department of Integrative Biology, Oklahoma State University, Stillwater, OK, USA
| | - William Dudefoi
- Department of Integrative Biology, Oklahoma State University, Stillwater, OK, USA; Department of Earth and Planetary Sciences, Washington University, Saint Louis, MO, USA
| | - Joshua Anadu
- Department of Integrative Biology, Oklahoma State University, Stillwater, OK, USA
| | - Matteo Minghetti
- Department of Integrative Biology, Oklahoma State University, Stillwater, OK, USA.
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Bednarek PT, Orłowska R. Time of In Vitro Anther Culture May Moderate Action of Copper and Silver Ions that Affect the Relationship between DNA Methylation Change and the Yield of Barley Green Regenerants. Plants (Basel) 2020; 9:E1064. [PMID: 32825181 DOI: 10.3390/plants9091064] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 08/10/2020] [Accepted: 08/17/2020] [Indexed: 12/18/2022]
Abstract
Plant anther culture allows for the regeneration of uniform and homozygous double haploids. However, off-type regenerants may appear as a result of so-called tissue culture-induced variation (TCIV). In addition, the presence of Cu2+ and Ag+ ions in the culture medium might influence the number of green plants. The regenerants were obtained via anther cultures of barley under varying Cu2+ and Ag+ ion concentrations in the induction medium during distinct time conditions. DArTseqMet markers were evaluated based on regenerants and donor plants and delivering data on DNA demethylation (DM) and de novo methylation (DNM) and changes in methylation (Delta). The number of green regenerated plants per 100 anthers (GPs) was evaluated. The Cu2+ and Ag+ ion concentrations moderated relationships between Delta and the number of green plants conditional on time of tissue cultures. Depending on the ions, moderated moderation is valid within the different time of anther culture. When the highest concentration of copper is analyzed, plant regeneration is possible under short ‘Time’ (21 days) of anther culture wherein Delta is negative or under elongated Time when Delta is positive. Under 21 days of culture, the highest concentration of silver ions and when Delta is negative, some regenerants could be evaluated. However, under high Ag+ concentration when Time of culture is long and Delta positive, the highest number of green plants could be obtained.
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Munkager V, Vestergård M, Priemé A, Altenburger A, de Visser E, Johansen JL, Ekelund F. AgNO 3 Sterilizes Grains of Barley ( Hordeum vulgare) without Inhibiting Germination-A Necessary Tool for Plant-Microbiome Research. Plants (Basel) 2020; 9:plants9030372. [PMID: 32192219 PMCID: PMC7154866 DOI: 10.3390/plants9030372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 03/11/2020] [Accepted: 03/12/2020] [Indexed: 11/16/2022]
Abstract
To understand and manipulate the interactions between plants and microorganisms, sterile seeds are a necessity. The seed microbiome (inside and surface microorganisms) is unknown for most plant species and seed-borne microorganisms can persist and transfer to the seedling and rhizosphere, thereby obscuring the effects that purposely introduced microorganisms have on plants. This necessitates that these unidentified, seed-borne microorganisms are removed before seeds are used for studies on plant–microbiome interactions. Unfortunately, there is no single, standardized protocol for seed sterilization, hampering progress in experimental plant growth promotion and our study shows that commonly applied sterilization protocols for barley grains using H2O2, NaClO, and AgNO3 yielded insufficient sterilization. We therefore developed a sterilization protocol with AgNO3 by testing several concentrations of AgNO3 and added two additional steps: Soaking the grains in water before the sterilization and rinsing with salt water (1% (w/w) NaCl) after the sterilization. The most efficient sterilization protocol was to soak the grains, sterilize with 10% (w/w) AgNO3, and to rinse with salt water. By following those three steps, 97% of the grains had no culturable, viable microorganism after 21 days based on microscopic inspection. The protocol left small quantities of AgNO3 residue on the grain, maintained germination percentage similar to unsterilized grains, and plant biomass was unaltered. Hence, our protocol using AgNO3 can be used successfully for experiments on plant–microbiome interactions.
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Affiliation(s)
- Victoria Munkager
- Department of Biology, University of Copenhagen, 2100 Copenhagen, Denmark (J.L.J.)
- Correspondence: ; Tel.: +45-27-12-16-33
| | - Mette Vestergård
- Department of Agroecology, Aarhus University, 4200 Slagelse, Denmark
| | - Anders Priemé
- Department of Biology, University of Copenhagen, 2100 Copenhagen, Denmark (J.L.J.)
| | - Andreas Altenburger
- The Arctic University Museum of Norway, UiT—The Arctic University of Norway, 9006 Tromsø, Norway
| | - Eva de Visser
- Department of Biology, University of Copenhagen, 2100 Copenhagen, Denmark (J.L.J.)
| | | | - Flemming Ekelund
- Department of Biology, University of Copenhagen, 2100 Copenhagen, Denmark (J.L.J.)
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Gu J, Shen C, Fang Z, Yu J, Zheng Y, Tian Z, Shao L, Li X, Xie K. Toward High-Performance Li Metal Anode via Difunctional Protecting Layer. Front Chem 2019; 7:572. [PMID: 31482086 PMCID: PMC6710352 DOI: 10.3389/fchem.2019.00572] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 07/29/2019] [Indexed: 11/29/2022] Open
Abstract
Li-metal batteries are the preferred candidates for the next-generation energy storage, due to the lowest electrode potential and high capacity of Li anode. However, the dangerous Li dendrites and serious interface reaction hinder its practical application. In this work, we construct a difunctional protecting layer on the surface of the Li anode (the AgNO3-modified Li anode, AMLA) for Li-S batteries. This stable protecting layer can hinder the corrosion reaction with intermediate polysulfides (Li2Sx, 4 ≤ x ≤ 8) and suppress the Li dendrites by regulating Li metal nucleation and depositing Li under the layer uniformly. The AMLA can cycle more than 50 h at 5 mA cm−2 with the steady overpotential of lower than 0.2 V and show high capacity of 666.7 mAh g−1 even after 500 cycles at 0.8375 mA cm−2 in Li-S cell. This work makes great contribution to the protection of the Li anode and further promotes the practical application.
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Affiliation(s)
- Jinlei Gu
- State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), Xi'an, China
| | - Chao Shen
- State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), Xi'an, China
| | - Zhao Fang
- School of Metallurgical Engineering, Xi'an University of Architecture and Technology, Xi'an, China
| | - Juan Yu
- School of Metallurgical Engineering, Xi'an University of Architecture and Technology, Xi'an, China
| | - Yong Zheng
- Shaanxi Coal and Chemical Technology Institute Co., Ltd, Xi'an, China
| | - Zhanyuan Tian
- Shaanxi Coal and Chemical Technology Institute Co., Ltd, Xi'an, China
| | - Le Shao
- Shaanxi Coal and Chemical Technology Institute Co., Ltd, Xi'an, China
| | - Xin Li
- State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), Xi'an, China
| | - Keyu Xie
- State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), Xi'an, China
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Vishwakarma K, Shweta, Upadhyay N, Singh J, Liu S, Singh VP, Prasad SM, Chauhan DK, Tripathi DK, Sharma S. Differential Phytotoxic Impact of Plant Mediated Silver Nanoparticles (AgNPs) and Silver Nitrate (AgNO 3) on Brassica sp. Front Plant Sci 2017; 8:1501. [PMID: 29075270 PMCID: PMC5644052 DOI: 10.3389/fpls.2017.01501] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 08/14/2017] [Indexed: 08/23/2023]
Abstract
Continuous formation and utilization of nanoparticles (NPs) have resulted into significant discharge of nanosized particles into the environment. NPs find applications in numerous products and agriculture sector, and gaining importance in recent years. In the present study, silver nanoparticles (AgNPs) were biosynthesized from silver nitrate (AgNO3) by green synthesis approach using Aloe vera extract. Mustard (Brassica sp.) seedlings were grown hydroponically and toxicity of both AgNP and AgNO3 (as ionic Ag+) was assessed at various concentrations (1 and 3 mM) by analyzing shoot and root length, fresh mass, protein content, photosynthetic pigments and performance, cell viability, oxidative damage, DNA degradation and enzyme activities. The results revealed that both AgNPs and AgNO3 declined growth of Brassica seedlings due to enhanced accumulation of AgNPs and AgNO3 that subsequently caused severe inhibition in photosynthesis. Further, the results showed that both AgNPs and AgNO3 induced oxidative stress as indicated by histochemical staining of superoxide radical and hydrogen peroxide that was manifested in terms of DNA degradation and cell death. Activities of antioxidants, i.e., ascorbate peroxidase (APX) and catalase (CAT) were inhibited by AgNPs and AgNO3. Interestingly, damaging impact of AgNPs was lesser than AgNO3 on Brassica seedlings which was due to lesser accumulation of AgNPs and better activities of APX and CAT, which resulted in lesser oxidative stress, DNA degradation and cell death. The results of the present study showed differential impact of AgNPs and AgNO3 on Brassica seedlings, their mode of action, and reasons for their differential impact. The results of the present study could be implied in toxicological research for designing strategies to reduce adverse impact of AgNPs and AgNO3 on crop plants.
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Affiliation(s)
- Kanchan Vishwakarma
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Allahabad, India
| | - Shweta
- D D Pant Interdisciplinary Research Lab, Department of Botany, University of Allahabad, Allahabad, India
| | - Neha Upadhyay
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Allahabad, India
| | - Jaspreet Singh
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Allahabad, India
| | - Shiliang Liu
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, China
- College of Agriculture, Food and Natural Resources, University of Missouri, Columbia, MO, United States
| | - Vijay P. Singh
- Government Ramanuj Pratap Singhdev Post Graduate College, Baikunthpur, India
| | - Sheo M. Prasad
- Ranjan Plant Physiology and Biochemistry Laboratory, Department of Botany, University of Allahabad, Allahabad, India
| | - Devendra K. Chauhan
- D D Pant Interdisciplinary Research Lab, Department of Botany, University of Allahabad, Allahabad, India
| | - Durgesh K. Tripathi
- Centre for Medical Diagnostic and Research, Motilal Nehru National Institute of Technology Allahabad, Allahabad, India
| | - Shivesh Sharma
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Allahabad, India
- Centre for Medical Diagnostic and Research, Motilal Nehru National Institute of Technology Allahabad, Allahabad, India
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Balakrishnan S, Srinivasan M, Mohanraj J. Biosynthesis of silver nanoparticles from mangrove plant (Avicennia marina) extract and their potential mosquito larvicidal property. J Parasit Dis 2016; 40:991-6. [PMID: 27605825 PMCID: PMC4996234 DOI: 10.1007/s12639-014-0621-5] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [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: 11/04/2014] [Accepted: 11/17/2014] [Indexed: 11/27/2022] Open
Abstract
To identify the larvicidal activities of silver nanoparticles synthesised with Avicennia marina leaf extract against the larvae of Aedes aegypti and Anopheleus stephensi, in vitro larvicidal activities such as LC50 and LC90 were assessed. Further, characterisation such as UV and FTIR analysis were carried out for the synthesised silver nanoparticles. The LC50 value of the synthesised silver nanoparticles was identified as 4.374 and 7.406 mg/L for An. stephensi and Ae. aegypti larvae respectively. Further, the LC90 values are also identified as 4.928 and 9.865 mg/L for An. stephensi and Ae. aegypti species respectively. The synthesised silver nanoparticles have maximum absorption at 420 nm with the average size of 60-95 nm. The FTIR data showed prominent peaks in (3940.57, 3929.00, 3803.63, 3712.97, 2918.30, 2231.64, 1610.50, 1377.17, 1257.59, 1041.59, 1041.56, 775.38, 667.37 and 503.21) different ranges. The biosynthesis of silver nanoparticles with leaf aqueous extract of A. marina provides potential source for the larvicidal activity against mosquito borne diseases. The present study proved the mosquitocidal properties of silver nanoparticles synthesised from mangroves of Vellar estuary. This is an ideal eco-friendly approach for the vector control programs.
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Affiliation(s)
- Srinivasan Balakrishnan
- Centre of Advanced Study in Marine Biology, Faculty of Marine Sciences, Annamalai University, Parangipettai, 608 502 Tamil Nadu India
- Marine Gastropod Hatchery & Research Laboratory, Department of Zoology, Kamaraj College, Manonmaniam Sundaranar University, Tuticorin, 628 003 Tamil Nadu India
| | - Muthukumarasamy Srinivasan
- Centre of Advanced Study in Marine Biology, Faculty of Marine Sciences, Annamalai University, Parangipettai, 608 502 Tamil Nadu India
| | - Jeyaraj Mohanraj
- Marine Gastropod Hatchery & Research Laboratory, Department of Zoology, Kamaraj College, Manonmaniam Sundaranar University, Tuticorin, 628 003 Tamil Nadu India
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Mohandass C, Vijayaraj AS, Rajasabapathy R, Satheeshbabu S, Rao SV, Shiva C, De-Mello I. Biosynthesis of Silver Nanoparticles from Marine Seaweed Sargassum cinereum and their Antibacterial Activity. Indian J Pharm Sci 2013; 75:606-10. [PMID: 24403664 PMCID: PMC3877525] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Revised: 07/19/2013] [Accepted: 07/22/2013] [Indexed: 11/30/2022] Open
Abstract
Seaweed extracts of Sargassum cinereum was used as a reducing agent in the eco-friendly extracellular synthesis of silver nanoparticles from an aqueous solution of silver nitrate (AgNO3). High conversion of silver ions to silver nanoparticles was achieved with a reaction temperature of 100(°) and a seaweed extract concentration of 10% with a residential time of 3 h. Formation of silver nanoparticles was characterised by spectrophotometry and the scanning electron microscope. The average particles size was ranging from 45 to 76 nm. Antimicrobial activities indicate the minimum inhibitory concentration of biologically synthesised nanoparticles tested against the pathogen Staphylococcus aureus with 2.5 μl (25 μg/disc). High inhibitions over the growth of Enterobacter aerogenes, Salmonella typhi and Proteus vulgaris were witnessed against the concentrations of 100 μg/disc. Promising potential and the future prospects of S. cinereum nanoparticles in pharmaceutical research are the highlights in this paper.
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Affiliation(s)
- C. Mohandass
- Microbial Technology Lab, Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa-403 004, India
| | - A. S. Vijayaraj
- Microbial Technology Lab, Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa-403 004, India
| | - R. Rajasabapathy
- Microbial Technology Lab, Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa-403 004, India
| | - S. Satheeshbabu
- Microbial Technology Lab, Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa-403 004, India
| | - S. V. Rao
- Microbial Technology Lab, Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa-403 004, India
| | - C. Shiva
- Microbial Technology Lab, Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa-403 004, India
| | - I. De-Mello
- Microbial Technology Lab, Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa-403 004, India
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Zhang FL, Takahata Y, Xu JB. Medium and genotype factors influencing shoot regeneration from cotyledonary explants of Chinese cabbage (Brassica campestris L. ssp. pekinensis). Plant Cell Rep 1998; 17:780-786. [PMID: 30736591 DOI: 10.1007/s002990050482] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Medium conditions for reliable shoot regeneration from cotyledonary explants of Chinese cabbage were examined. Maximum shoot regeneration was obtained in the presence of 5 mg/l BA and 0.5 mg/l NAA. Shoot induction was further improved by the addition of AgNO3 as well as higher concentrations (1.2-1.6%) of agar in the regeneration medium. When 123 genotypes were tested, a large variation in regeneration frequency was observed, ranging from 95% to 0%. Shoot regeneration frequency was not related to origin and days to maturity of the genotypes. Ethylene production from cultured explants seemed to play an important role in shoot regeneration. Explants of highly responsive genotypes or if cultured on the medium solidified with a higher concentration of agar generally showed low levels of ethylene production. However, AgNO3, which also enhanced shoot induction, resulted in an increase in ethylene production. The possible interaction between ethylene and shoot regeneration is discussed.
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Affiliation(s)
- F-L Zhang
- Faculty of Agriculture, Iwate University, Morioka 020-8550, Japan Fax: 81-19-621-6177 e-mail: , , , , , , JP
| | - Y Takahata
- Faculty of Agriculture, Iwate University, Morioka 020-8550, Japan Fax: 81-19-621-6177 e-mail: , , , , , , JP
| | - J-B Xu
- Beijing Vegetable Research Center, Beijing 100081, China, , , , , , CN
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Abstract
The enthalpies of precipitation of silver halides and the enthalpies of solution of AgNO3, KCl, and KBr in H2O were measured in an adiabatic solution calorimeter. From the enthalpy measurements of KCl(c) and KBr(c) in AgNO3(aq), and of AgNO3(c) in KCl(aq), in KBr(aq), and in KI(aq), we calculated (in kJ · mol-1) -65.724, -84.826, and -111.124 for ΔH° pptn(298.15 K) for the averages of the chloride, bromide, and iodide reactions, respectively. A reevaluation of the data for the enthalpy of solution of AgNO3(c) has resulted in our selected best value,Δ H ° ( ∞ ) ( 298.15 K ) = 22.730 + 0.084 kJ ⋅ mol - 1 = 5.433 ± 0.020 kcal ⋅ mol - 1 A table of enthalpies of dilution of AgNO3(aq) is also given. The average standard entropy for the aqueous silver ion at 298.15 K is found to beS ° [ Ag + ( aq ) ] = 73.42 ± 0.20 J ⋅ mol - 1 ⋅ K - 1 = 17.55 ± 0.05 cal ⋅ mol - 1 ⋅ K - 1 . .
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Affiliation(s)
- Donald D Wagman
- Institute for Materials Research, National Bureau of Standards, Washington, D.C. 20234
| | - Marthada V Kilday
- Institute for Materials Research, National Bureau of Standards, Washington, D.C. 20234
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