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Upadhyay S, Kumar A, Srivastava M, Srivastava A, Dwivedi A, Singh RK, Srivastava SK. Recent advancements of smartphone-based sensing technology for diagnosis, food safety analysis, and environmental monitoring. Talanta 2024; 275:126080. [PMID: 38615454 DOI: 10.1016/j.talanta.2024.126080] [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: 01/29/2024] [Revised: 04/04/2024] [Accepted: 04/07/2024] [Indexed: 04/16/2024]
Abstract
The emergence of computationally powerful smartphones, relatively affordable high-resolution camera, drones, and robotic sensors have ushered in a new age of advanced sensible monitoring tools. The present review article investigates the burgeoning smartphone-based sensing paradigms, including surface plasmon resonance (SPR) biosensors, electrochemical biosensors, colorimetric biosensors, and other innovations for modern healthcare. Despite the significant advancements, there are still scarcity of commercially available smart biosensors and hence need to accelerate the rates of technology transfer, application, and user acceptability. The application/necessity of smartphone-based biosensors for Point of Care (POC) testing, such as prognosis, self-diagnosis, monitoring, and treatment selection, have brought remarkable innovations which eventually eliminate sample transportation, sample processing time, and result in rapid findings. Additionally, it articulates recent advances in various smartphone-based multiplexed bio sensors as affordable and portable sensing platforms for point-of-care devices, together with statistics for point-of-care health monitoring and their prospective commercial viability.
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Affiliation(s)
- Satyam Upadhyay
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Anil Kumar
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Monika Srivastava
- School of Materials Science and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, India
| | - Amit Srivastava
- Department of Physics TDPG College, VBS Purvanchal University, Jaunpur, 222001, India
| | - Arpita Dwivedi
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Rajesh Kumar Singh
- School of Physical and Material Sciences, Central University of Himachal Pradesh, Dharamshala, Kangra, 176215, India
| | - S K Srivastava
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
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Parida VK, Srivastava SK, Chowdhury S, Gupta AK. Visible Light-Assisted Degradation of Sulfamethoxazole on 2D/0D Sulfur-Doped Bi 2O 3/MnO 2 Z-Scheme Heterojunction Immobilized Photocatalysts. Langmuir 2023; 39:18846-18865. [PMID: 38095629 DOI: 10.1021/acs.langmuir.3c02733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
Retrieving the spent photocatalysts from the reaction system is always a challenging task. Therefore, the present work is focused on immobilizing sulfur-doped-Bi2O3/MnO2 (S-BOMO) heterojunction photocatalysts over different support matrices and evaluating their performance for the removal of sulfamethoxazole (SMX) in water under visible light. Our findings revealed S-BOMO coated clay beads (S-BOMO CCB) achieving more than 86% (240 min) SMX degradation ∼3, ∼1.3, and ∼2 times higher compared to S-BOMO coated on the different substrates, including glass beads, floating stones, and polymer material substrates, respectively. Mott-Schottky measurements confirmed the construction of the Z-scheme heterojunction involving MnO2 and 2S-Bi2O3. This Z-scheme mechanism, along with its narrow band gap of 1.58 eV, resulted in a rapid spatial transfer of the photogenerated charge carriers between the semiconductors and is believed to enhance the overall photocatalytic activity of the nanocomposite. Radical trapping and electron paramagnetic resonance results clearly established the active role of hydroxyl radicals and hydrogen peroxide in the degradation of SMX. Further, the 2S-BOMO CCB demonstrated excellent stability and photocatalytic activity over multiple runs. According to the sensitivity analysis and the results of anion effect experiments, phosphate and sulfate ions exhibit a significant impact on sulfamethoxazole degradation. Toxicity analysis revealed that 2S-BOMO CCB and sulfamethoxazole degradation byproducts were apparently innocuous. Additionally, the practical applicability of 2S-BOMO CCB was examined in various real water matrices, with the degradation efficiency followed the order: tap water < groundwater < surface water < hospital wastewater < municipal wastewater < pharmaceutical industry wastewater. The economic assessment revealed the reduction in the overall cost of the immobilized 2S-BOMO following the recovery process. Overall, the findings of this work provided critical insights into the synthesis and performance of incredibly effective and stable immobilized photocatalysts for the degradation of pharmaceutical pollutants.
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Affiliation(s)
- Vishal Kumar Parida
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | | | - Shamik Chowdhury
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Ashok Kumar Gupta
- Environmental Engineering Division, Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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Dwivedi A, Srivastava M, Srivastava A, Kumar A, Chaurasia RN, Srivastava SK. A Eu 3+doped functional core-shell nanophosphor as fluorescent biosensor for highly selective and sensitive detection of dsDNA. J Photochem Photobiol B 2023; 249:112802. [PMID: 37918122 DOI: 10.1016/j.jphotobiol.2023.112802] [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] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 10/18/2023] [Accepted: 10/24/2023] [Indexed: 11/04/2023]
Abstract
Lanthanide-doped core-shell nanomaterials have illustrated budding potential as luminescent materials, but their biological applications have still been very limited due to their aqueous solubility and biocompatibility. Here, we report a simple and cost-effective approach to construct a water-stable chitosan-functionalized lanthanoid-based core shell (Ca-Eu:Y2O3@SiO2) nanophosphor. The as-synthesized Ca-Eu:Y2O3@SiO2-chitosan (CEY@SiO2-CH) nanophosphor has been characterized for its structural, morphological, and optical properties, by employing different analytical tools. This sensing platform is suitable for dsDNA probing by tracing the "turn on" fluorescence signal generated by CEY@SiO2-CH nanophosphor with the addition of dsDNA. The ratio of fluorescence intensity enhancement is proportional to the concentration of dsDNA in the range 0.1-90 nM, with the limit of detection at ⁓16.1 pM under optimal experimental conditions. The enhancement in fluorescence response of functionalized core-shell phosphor with dsDNA is due to the antenna effect. Additionally, response of probe has been studied for the real samples displaying percent recovery in between 101 and 105, maximum RSD% upto 5.23 (n = 3). This outcome can be applied to the selective sensing of dsDNA through optical response. These findings establish the CEY@SiO2-CH a simple, portable, and potential candidate as a sensor for rapid and analytical detection of dsDNA.
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Affiliation(s)
- Arpita Dwivedi
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
| | - Monika Srivastava
- School of Materials Science and Technology, IIT (BHU), Varanasi 221005, India
| | - Amit Srivastava
- Department of Physics, TDPG College, VBS Purvanchal University, Jaunpur 222001, India
| | - Abhai Kumar
- Department of Botany, Deen Dayal Upadhyaya Gorakhpur University, Gorakhpur 273009, India
| | - Rameshwar Nath Chaurasia
- Department of Neurology, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
| | - S K Srivastava
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
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Gupta VK, Srivastava SK, Ghosh SK, Srivastava N, Singh G, Verma MR, Katiyar R, Muthu R, Bhutia L, Kumar A, Singh R. Effect of endogenous hormones, antisperm antibody and oxidative stress on semen quality of crossbred bulls. Anim Biotechnol 2022; 33:1441-1448. [PMID: 33866921 DOI: 10.1080/10495398.2021.1905656] [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: 12/30/2022]
Abstract
The present study was designed to evaluate the effect of factors like hormones, antisperm antibody (ASA), and oxidative stress and its relation with semen quality in crossbred bulls. Ejaculates from two bulls were categorized into good (n = 12) and poor (n = 12) based on initial progressive motility, that is, ≥70% and ≤50%, respectively. The level of hormones like Testosterone (p < 0.05) and PGE2 (p < 0.01) was significantly higher in good-quality ejaculates compared to poor-quality ejaculates; however, estradiol (p < 0.05), progesterone, oxidative stress, and ASAs were significantly higher (p < 0.01) in poor-quality ejaculates compared to good-quality ejaculates. Therefore, it could be concluded that oxidative stress and hormonal imbalance might have resulted in high number of dead and defective spermatozoa which was ultimately responsible for poor quality semen ejaculates.
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Affiliation(s)
- Vinod Kumar Gupta
- Division of Animal Reproduction, Indian Veterinary Research Institute, Izatnagar, India
| | - S K Srivastava
- Division of Animal Reproduction, Indian Veterinary Research Institute, Izatnagar, India
| | - S K Ghosh
- Division of Animal Reproduction, Indian Veterinary Research Institute, Izatnagar, India
| | - N Srivastava
- Division of Animal Reproduction, Indian Veterinary Research Institute, Izatnagar, India
| | - G Singh
- Division of Animal Physiology and Climatology, Indian Veterinary Research Institute, Izatnagar, India
| | - M R Verma
- Division of Livestock Economics and Statistics, Indian Veterinary Research Institute, Izatnagar, India
| | - Rahul Katiyar
- Division of Animal Reproduction, Indian Veterinary Research Institute, Izatnagar, India
| | - Ramamoorthy Muthu
- Division of Animal Reproduction, Indian Veterinary Research Institute, Izatnagar, India
| | - L Bhutia
- Division of Animal Reproduction, Indian Veterinary Research Institute, Izatnagar, India
| | - Abhishek Kumar
- Division of Animal Reproduction, Indian Veterinary Research Institute, Izatnagar, India
| | - Rohit Singh
- Division of Pathology, ICAR - Indian Veterinary Research Institute, Izatnagar, India
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Gupta A, Hillier AD, Telling MTF, Srivastava SK. Local magnetic behaviour of highly disordered undoped and Co-doped Bi2Se3 nanoplates: a muon spin relaxation study. Nanotechnology 2022; 33:215701. [PMID: 35130523 DOI: 10.1088/1361-6528/ac5285] [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: 11/19/2021] [Accepted: 02/07/2022] [Indexed: 06/14/2023]
Abstract
Magnetism induced by defects in nominally non-magnetic solids has attracted intense scientific interest in recent years. The local magnetism in highly disordered undoped and Co-doped topological insulator (TI) Bi2Se3nanoplates has been investigated by muon spin relaxation (μSR). UsingμSR spectroscopy, together with other macroscopic characterizations, we find that these nanoplates are composed of a core with both static fields and dynamically fluctuating moments, and a shell with purely dynamically fluctuating moments. The fluctuations in the core die out at low temperatures, while those in the shell continue till 2 K. When Bi2Se3is doped with Co, the static magnetic component increases, whilst keeping the dual (static-plus-dynamic) nature intact. The findings indicate that highly disordered TI's could constitute a new class of promising magnetic materials that can be engineered by magnetic impurity doping.
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Affiliation(s)
- Anu Gupta
- Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - A D Hillier
- ISIS Neutron and Muon Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot OX11 0QX, United Kingdom
| | - M T F Telling
- ISIS Neutron and Muon Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot OX11 0QX, United Kingdom
| | - S K Srivastava
- Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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Dutta S, Srivastava SK, Gupta B, Gupta AK. Hollow Polyaniline Microsphere/MnO 2/Fe 3O 4 Nanocomposites in Adsorptive Removal of Toxic Dyes from Contaminated Water. ACS Appl Mater Interfaces 2021; 13:54324-54338. [PMID: 34727690 DOI: 10.1021/acsami.1c15096] [Citation(s) in RCA: 13] [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] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Dyes are considered as recalcitrant compounds and are not easily removed through conventional water treatment processes. The present study demonstrated the fabrication of polyaniline hollow microsphere (PNHM)/MnO2/Fe3O4 composites by in situ deposition of MnO2 and Fe3O4 nanoparticles on the surface of PNHM. The physicochemical characteristics and adsorption behavior of the prepared PNHM/MnO2/Fe3O4 composites towards the removal of toxic methyl green (MG) and Congo red (CR) dyes have been investigated. The characterization study revealed the successful synthesis of the prepared PNHM/MnO2/Fe3O4 adsorbent with a high Brunauer-Emmett-Teller (BET) surface area of 191.79 m2/g. The batch adsorption study showed about 88 and 98% adsorption efficiencies for MG and CR dyes, respectively, at an optimum dose of 1 g/L of PNHM/MnO2/Fe3O4 at pH ∼6.75 at room temperature (303 ± 3 K). The adsorption phenomena of MG and CR dyes were well described by the Elovich and pseudo-second-order kinetics, respectively, and Freundlich isotherm model. The thermodynamics study shows that the adsorption reactions were endothermic and spontaneous in nature. The maximum adsorption capacity (Qmax) for MG and CR dyes was observed as 1142.13 and 599.49 mg/g, respectively. The responsible adsorption mechanisms involved in dye removal were electrostatic interaction, ion exchange, and the formation of the covalent bonds. The coexisting ion study revealed that the presence of phosphate co-ion considerably reduced the CR dye removal efficiency. However, the desorption-regeneration study demonstrated the successful reuse of the spent PNHM/MnO2/Fe3O4 material for the adsorption of MG and CR dyes for several cycles. Given the aforementioned findings, the PNHM/MnO2/Fe3O4 nanocomposites could be considered as a promising adsorbent for the remediation of dye-contaminated water.
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Affiliation(s)
- Soumi Dutta
- School of Water Resources, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | | | - Bramha Gupta
- School of Water Resources, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Ashok Kumar Gupta
- Environmental Engineering Division, Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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Mondal J, Srivastava SK. Room-Temperature One-Step Synthesis of Silver/Reduced Graphene Oxide Nanocomposites as an Excellent Microwave Absorber. Langmuir 2021; 37:13409-13419. [PMID: 34736324 DOI: 10.1021/acs.langmuir.1c02110] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The present study is focused on room-temperature synthesis carried out by reduction of an aqueous silver nitrate (AgNO3) and AgNO3/graphene oxide (GO) dispersion using a low-cost commercial Fehling B solution in one step to form silver quantum dots (Ag QDs) and their Ag/reduced graphene oxide (Ag/RGO) nanocomposites and their characterization. The crystallinity, surface chemistry, structural, and morphological studies indicated the formation of crystalline small-sized quasispherical-functionalized Ag particles distributed uniformly on the surface of RGO. The conductivity measurements further showed an improvement in the conductivity of Ag/RGO nanocomposites as compared to neat Ag QDs. Our findings showed that Ag/RGO nanocomposites prepared by using 0.055 wt % of GO exhibited a total enhanced electromagnetic interference (EMI)-shielding efficiency (SET) of ∼39.2-42.3 dB (2-8 GHz) with a maximum value of ∼43.8 dB at 7. 5 GHz due to conduction loss, an interconnected conducting network, and a synergistic effect, and it followed an absorption mechanism. Furthermore, this superior absorption-dominated shielding conferred reflection loss (RL) in the range of -79 to -82.5 dB with a RL minima of -88 dB at 7.5 GHz, considering an effective absorption bandwidth of ∼6 GHz with 99.9% absorptivity. It is anticipated that Ag/RGO nanocomposites prepared in one step at room temperature could find potential EMI-shielding applications.
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Affiliation(s)
- Jayanta Mondal
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302 West Bengal, India
| | - Suneel Kumar Srivastava
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302 West Bengal, India
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Dwivedi A, Srivastava M, Srivastava A, Srivastava SK. Synthesis of high luminescent Eu 3+ doped nanoparticle and its application as highly sensitive and selective detection of Fe 3+ in real water and human blood serum. Spectrochim Acta A Mol Biomol Spectrosc 2021; 260:119942. [PMID: 34015746 DOI: 10.1016/j.saa.2021.119942] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [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: 02/04/2021] [Revised: 04/30/2021] [Accepted: 05/06/2021] [Indexed: 06/12/2023]
Abstract
The present work reports a highly efficient Ca doped Eu: Y2O3 i.e Ca0.05Eu0.01Y1.94O3 (CEY.) nanophosphor material synthesized through a facile combustion method, as a simple and selective turn-off fluorescence probe for the quantitative analysis of iron ions (Fe3+). The proposed sensor allows the quantification of iron in the range of 10 µM-90 µM with a limit of detection (LOD) ∼ 63.2 nM under the natural pH range. Moreover, CEY nanophosphor shows an excellent fluorescence phenomenon with a gradual increase in the Fe3+ ion concentration. It has been observed that the corresponding PL intensity gets completely quenched with 500 µM Fe3+ ion concentration. Furthermore, the applicability of the sensor as an efficient probe has been investigated with real water samples, iron tablets, and human blood serum (HBS). The selectivity of the probe has also been analyzed with various metal ions and biomolecules. Thus, in turn, the as-obtained sensing probe illustrates an excellent accuracy, sensitivity, and selectivity, and offers potential application in clinical diagnosis, biological and real water sample studies, with the detection of Fe3+ ion. Furthermore, it does not require any acidic medium for a level-free, and non-enzymic detection of a real sample with almost not affecting the sample quality and henceforth provides more reliable results.
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Affiliation(s)
- Arpita Dwivedi
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Monika Srivastava
- School of Materials Science and Technology, IIT (BHU), Varanasi 221005, India
| | - Amit Srivastava
- Department of Physics TDPG College, VBS Purvanchal University, Jaunpur 222001, India
| | - S K Srivastava
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
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Mondai J, Kumar Srivastava S. Electromagnetic Interference Shielding Effectiveness of Room Temperature Fabricated Manganese Dioxide/Carbon Dots Nanocomposites. J Nanosci Nanotechnol 2021; 21:5542-5555. [PMID: 33980364 DOI: 10.1166/jnn.2021.19473] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The present work is focused on the fabrication of manganese dioxide/carbon dots (MnO₂/CDs) nanocomposites at room temperature in situ co-participation method in an aqueous medium and characterized. Our study showed that the concentration of CDs controls the morphology of MnO₂/CDs nanocomposite and also acted as a reducing agent to convert potassium permanganate (KMnO₄) to MnO₂. Subsequently, nanoflowers, quasi-spherical particles, broken, and interconnected chain type of morphology was observed by adding dispersion of 0.5, 1.0, 1.5, and 2.0 ml CDs in acetone to 1 mmol KMnO₄ aqueous solution in the corresponding MnO₂/CDs-0.5, MnO₂/CDs-1.0, MnO₂/CDs-1.5, and MnO₂/CDs-2.0 composites, respectively. A plausible mechanism on the transformation of morphology of MnO₂/CDs with CDs concentration is also provided. Further, the present work also focused for the first time on the application in the electromagnetic interference (EMI) shielding of MnO₂/CD nanocomposites due to the high dielectric and conductivity. Interestingly, MnO₂/CDs-2.0 (nanochains) exhibited the highest total EMI shielding efficiency (SET) of ~39.4 dB following reflection as dominant shielding mechanism due to the high aspect ratio, highest conductivity, high dielectric loss, and impendence mismatch.
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Affiliation(s)
- Jayanta Mondai
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Suneel Kumar Srivastava
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
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Manna R, Kumar Srivastava S, Mittal V. Fabrication of High Dielectric Materials Through Selective Insertion of Functionalized Reduced Graphene Oxide on Hard Segment of Thermoplastic Polyurethane. J Nanosci Nanotechnol 2021; 21:5569-5582. [PMID: 33980366 DOI: 10.1166/jnn.2021.19468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The presence of microcapacitors near percolatrion threshold determines dielectric permittivity of a material. Motivated by this concept, we focused our work by preferentially allocating functionalized reduced graphene oxide (FRGO) in hard segment (disperse phase) of Thermoplastic polyurethane (TPU) by solution blending method and characterized. Morphological studies of TPU/FRGO nanocomposites established homogeneous dispersion of FRGO throughout the TPU matrix. It is noted that TPU/FRGO (1 phr) nanocomposites exhibit maximum increase in tensile strength (33%) and elongation at break (10%). Thermogravimetric analysis (TGA) showed maximum enhancement in onset of decomposition temperature (~6 °C) in 2 phr FRGO loaded TPU. Differential scanning calorimetry (DSC) analysis showed maximum reduction (~2 °C) in glass transition temperature (Tg) of soft segment of TPU followed by maximum improvements in melting temperature (~4 °C) as well as crystallization temperature (~22 °C) of hard segment compared to neat TPU. Further, a significantly high value of dielectric permittivity (401) is achieved in 1.5 phr loaded FRGO at 100 Hz due to the formation of significantly higher number of microcapacitors near the percolation threshold. It is anticipated that such thermally stable and mechanically strong high dielectric TPU/FRGO nanocomposites can find applications in the field of electronic devices.
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Affiliation(s)
- Rakesh Manna
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
| | | | - Vikas Mittal
- Department of Chemical Engineering, Khalifa University of Science and Technology (KUST), Sas Al Nakh! Campus, Abu Dhabi, P.O. 2533, United Arab Emirates
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Manna R, Ghosh K, Srivastava SK. Functionalized Graphene/Nickel/Polyaniline Ternary Nanocomposites: Fabrication and Application as Electromagnetic Wave Absorbers. Langmuir 2021; 37:7430-7441. [PMID: 34115512 DOI: 10.1021/acs.langmuir.1c00804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The evolution of high electromagnetic absorption materials is essential in the fast growing electronic industry in overcoming electromagnetic pollution. In view of this, a series of Ni nanoparticle-decorated functionalized graphene sheets (FG/Ni) are synthesized by a solvothermal method using different ratios of FG/Ni precursors. Subsequently, FG/Ni is subjected to in situ polymerization of aniline to form FG/Ni/PANI ternary composites and characterized. The total electromagnetic interference shielding efficiency (SET) measurements on FG/Ni/PANI with an optimized FG/Ni ratio (50 mg:600 mg NiCl2·6H2O) exhibit enhanced performance, i.e., ∼47-65 dB (2-3.8 GHz) and ∼65-45 dB (3.8-8 GHz), following absorption as the dominant mechanism due to the matching of dielectric loss and magnetic loss. It is anticipated that such excellent performance of robust FG/Ni/PANI ternary composites at a very low thickness (0.5 mm) has great potential in the application of microwave-absorbing materials.
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Affiliation(s)
- Rakesh Manna
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, West Bengal, India
| | - Kalyan Ghosh
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, West Bengal, India
| | - Suneel Kumar Srivastava
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, West Bengal, India
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Kumar A, Srivastava SK, Srivastava M, Prakash R. Electrochemical sensing of pioglitazone hydrochloride on N-doped r-GO modified commercial electrodes. Analyst 2021; 146:3578-3588. [PMID: 33913938 DOI: 10.1039/d1an00224d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
In this paper, we explain the electrochemical sensing of commercially available pioglitazone hydrochloride (PIOZ) tablets on a nitrogen (N) doped r-GO (Nr-GO) modified commercial glassy carbon electrode (GCE) and a commercial screen printed graphite electrode (SPGE). Nr-GO is synthesized by the chemical reduction of graphene oxide (GO) and simultaneous insertion of an N-dopant by hydrazine monohydrate. Pristine GO itself is prepared by chemical exfoliation of bulk graphite. Upon chemical reduction, the exfoliated GO sheets restack together leaving behind the doped N-atom as evidenced by XRD and Raman spectroscopy. The N-atom exists in the pyrrolinic and pyridinic form at the edge of graphitic domains which is confirmed by XPS. The as-synthesized Nr-GO is used for the preparation of electro-active electrodes with the help of the GCE and SPGE. These electrodes have the capability to oxidize PIOZ by a diffusion dominated process as evidenced by the impedance spectroscopic technique. The differential pulse voltammetric responses of different concentrations of PIOZ are assessed over the Nr-GO modified GCE and SPGE, which exhibit better limits of detection (LODs) of 67 nM and 29 nM, respectively, compared to those from earlier reports. These assays exhibit non-interfering capability in the presence of various body interferents at pH = 7.0.
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Affiliation(s)
- Ashish Kumar
- School of Materials Science and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi-221005, UP, India.
| | - S K Srivastava
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi - 221005, UP, India
| | - Monika Srivastava
- School of Materials Science and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi-221005, UP, India.
| | - Rajiv Prakash
- School of Materials Science and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi-221005, UP, India.
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Sagar P, Gupta GK, Srivastava M, Srivastava A, Srivastava SK. Tagetes erecta as an organic precursor: synthesis of highly fluorescent CQDs for the micromolar tracing of ferric ions in human blood serum. RSC Adv 2021; 11:19924-19934. [PMID: 35479259 PMCID: PMC9033680 DOI: 10.1039/d1ra01571k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Accepted: 05/24/2021] [Indexed: 01/28/2023] Open
Abstract
The present article illustrates the green synthesis of novel carbon quantum dots (CQDs) from biomass viz. Tagetes erecta (TE), and subsequently fabrication of a metal ion probe for the sensing of Fe3+ in real samples. TE-derived CQDs (TE-CQDs) have been synthesized by a facile, eco-friendly, bottom-up hydrothermal approach using TE as a carbon source. The successful synthesis and proper phase formation of the envisaged material has been confirmed by various characterization techniques (Raman, XRD, XPS, TEM, and EDS). Notably, the green synthesized TE-CQDs show biocompatibility, good solubility in aqueous media, and non-toxicity. The as-synthesized TE-CQDs show an intense photoluminescence peak at 425 nm and exhibit excitation dependent photoluminescence behavior. The proposed TE-CQD-based probe offers a remarkable fluorescence (FL) quenching for Fe3+ with high selectivity (Kq ∼ 10.022 × 1013 M−1 s−1) and a sensitive/rapid response in a linear concentration range 0–90 μM (regression coefficient R2 ∼ 0.99) for the detection of Fe3+. The limit of detection (LOD) of the probe for Fe3+ has been found as 0.37 μM in the standard solution. It has further been applied for the detection of Fe3+ in real samples (human blood serum) and displays good performance with LOD ∼ 0.36 μM. The proposed TE-CQD-based ion sensing probe has potential prospects to be used effectively in biological studies and clinical diagnosis. TE-CQDs synthesized via the hydrothermal method for the detection of Fe3+ in HBS.![]()
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Affiliation(s)
- Pinky Sagar
- Department of Physics, Institute of Science, Banaras Hindu University Varanasi India 221005
| | - Gopal Krishna Gupta
- Department of Physics, TDPG College, VBS Purvanchal University Jaunpur India 222001
| | - Monika Srivastava
- School of Materials Science and Technology, IIT (BHU) Varanasi India 221005
| | - Amit Srivastava
- Department of Physics, TDPG College, VBS Purvanchal University Jaunpur India 222001
| | - S K Srivastava
- Department of Physics, Institute of Science, Banaras Hindu University Varanasi India 221005
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Gupta GK, Sagar P, Pandey SK, Srivastava M, Singh AK, Singh J, Srivastava A, Srivastava SK, Srivastava A. In Situ Fabrication of Activated Carbon from a Bio-Waste Desmostachya bipinnata for the Improved Supercapacitor Performance. Nanoscale Res Lett 2021; 16:85. [PMID: 33987738 PMCID: PMC8119520 DOI: 10.1186/s11671-021-03545-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 05/05/2021] [Indexed: 06/01/2023]
Abstract
Herein, we demonstrate the fabrication of highly capacitive activated carbon (AC) using a bio-waste Kusha grass (Desmostachya bipinnata), by employing a chemical process followed by activation through KOH. The as-synthesized few-layered activated carbon has been confirmed through X-ray powder diffraction, transmission electron microscopy, and Raman spectroscopy techniques. The chemical environment of the as-prepared sample has been accessed through FTIR and UV-visible spectroscopy. The surface area and porosity of the as-synthesized material have been accessed through the Brunauer-Emmett-Teller method. All the electrochemical measurements have been performed through cyclic voltammetry and galvanometric charging/discharging (GCD) method, but primarily, we focus on GCD due to the accuracy of the technique. Moreover, the as-synthesized AC material shows a maximum specific capacitance as 218 F g-1 in the potential window ranging from - 0.35 to + 0.45 V. Also, the AC exhibits an excellent energy density of ~ 19.3 Wh kg-1 and power density of ~ 277.92 W kg-1, respectively, in the same operating potential window. It has also shown very good capacitance retention capability even after 5000th cycles. The fabricated supercapacitor shows a good energy density and power density, respectively, and good retention in capacitance at remarkably higher charging/discharging rates with excellent cycling stability. Henceforth, bio-waste Kusha grass-derived activated carbon (DP-AC) shows good promise and can be applied in supercapacitor applications due to its outstanding electrochemical properties. Herein, we envision that our results illustrate a simple and innovative approach to synthesize a bio-waste Kusha grass-derived activated carbon (DP-AC) as an emerging supercapacitor electrode material and widen its practical application in electrochemical energy storage fields.
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Affiliation(s)
- Gopal Krishna Gupta
- Department of Physics, TDPG College, VBS Purvanchal University, Jaunpur, 222001, India
| | - Pinky Sagar
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Sumit Kumar Pandey
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Monika Srivastava
- School of Materials Science and Technology, Indian Institute of Technology (BHU), Varanasi, 221005, India
| | - A K Singh
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Jai Singh
- Department of Pure and Applied Physics, Guru Ghasidas Vishwavidyalaya, Bilaspur, 495009, India
| | - Anchal Srivastava
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - S K Srivastava
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
| | - Amit Srivastava
- Department of Physics, TDPG College, VBS Purvanchal University, Jaunpur, 222001, India.
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Manna R, Srivastava SK. Reduced Graphene Oxide/Fe 3O 4/Polyaniline Ternary Composites as a Superior Microwave Absorber in the Shielding of Electromagnetic Pollution. ACS Omega 2021; 6:9164-9175. [PMID: 33842785 PMCID: PMC8028133 DOI: 10.1021/acsomega.1c00382] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 03/08/2021] [Indexed: 05/11/2023]
Abstract
The present work is focused on fabrication of reduced graphene oxide/iron(II/III) oxide/polyaniline (RGO/Fe3O4/PANI) ternary composite by a hydrothermal method, its characterization, and application in the development of a high microwave absorbing shielding material. The RGO/Fe3O4/PANI composite showed dramatic enhancement of dielectric loss and magnetic loss compared to Fe3O4/PANI and RGO/Fe3O4 binary composites. This is ascribed to the embedment of more heterostructure phases. As a result, RGO/Fe3O4/PANI showed remarkably high SET (∼28 dB) through the absorption dominant mechanism. Our findings also showed maximum R L of Fe3O4/PANI, RGO/Fe3O4, and RGO/Fe3O4/PANI in the range of 2-8 GHz corresponding to -25 to -35, -40 to -46, and approximately -64 dB, respectively. This is in all probability due to the good impedance matching between permittivity/permeability and dielectric/magnetic losses.
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16
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Ghosh K, Srivastava SK. Enhanced Supercapacitor Performance and Electromagnetic Interference Shielding Effectiveness of CuS Quantum Dots Grown on Reduced Graphene Oxide Sheets. ACS Omega 2021; 6:4582-4596. [PMID: 33644566 PMCID: PMC7905797 DOI: 10.1021/acsomega.0c05034] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 12/30/2020] [Indexed: 05/05/2023]
Abstract
This study is focused on the preparation of the CuS/RGO nanocomposite via the hydrothermal method using GO and Cu-DTO complex as precursors. X-ray diffraction, Fourier-transform infrared spectroscopy, and Raman and X-ray photoelectron spectroscopy study revealed the formation of the CuS/RGO nanocomposite with improved crystallinity, defective nanostructure, and the presence of the residual functional group in the RGO sheet. The morphological study displayed the transformation of CuS from nanowire to quantum dots with the incorporation of RGO. The galvanostatic charge/discharge curve showed that the CuS/RGO nanocomposite (12 wt % Cu-DTO complex) has tremendous and outperforming specific capacitance of 3058 F g-1 at 1 A g-1 current density with moderate cycling stability (∼60.3% after 1000 cycles at 10 A g-1). The as-prepared nanocomposite revealed excellent improvement in specific capacitance, cycling stability, Warburg impedance, and interfacial charge transfer resistance compared to neat CuS. The fabricated nanocomposites were also investigated for their bulk DC electrical conductivity and EMI shielding ability. It was observed that the CuS/RGO nanocomposite (9 wt % Cu-DTO) exhibited a total electromagnetic shielding efficiency of 64 dB at 2.3 GHz following absorption as a dominant shielding mechanism. Such a performance is ascribed to the presence of interconnected networks and synergistic effects.
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Affiliation(s)
- Kalyan Ghosh
- Department of Chemistry, Indian
Institute of Technology Kharagpur, Kharagpur 721302, India
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17
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Ghosh K, Srivastava SK. Fabrication of N-Doped Reduced Graphite Oxide/MnCo 2O 4 Nanocomposites for Enhanced Microwave Absorption Performance. Langmuir 2021; 37:2213-2226. [PMID: 33541084 DOI: 10.1021/acs.langmuir.0c03641] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The present work reports on the fabrication of a lightweight microwave absorber comprising MnCo2O4 prepared from the urea complex of manganese (Mn)/cobalt (Co) and nitrogen-doped reduced graphite oxide (NRGO) by facile hydrothermal method followed by annealing process and characterized. The phase analysis, compositional, morphological, magnetic, and conductivity measurements indicated dispersion of paramagnetic MnCo2O4 spherical particles on the surface of NRGO. Our findings also showed that Mn, Co-urea complex, and GO in the weight ratio of 1:4 (NGMC3) exhibited maximum shielding efficiency in the range of 55-38 dB with absorption as an overall dominant shielding mechanism. The reflection loss of NGMC3 was found to be in the range of -90 to -77 dB with minima at -103 dB (at 2.9 GHz). Such outstanding electromagnetic wave absorption performance of NRGO/MnCo2O4 nanocomposite compared to several other metal cobaltates could be attributed to the formation of percolated network assisted electronic polarization, interfacial polarization and associated relaxation losses, conductance loss, dipole polarization and corresponding relaxation loss, impedance matching, and magnetic resonance to some extent.
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Affiliation(s)
- Kalyan Ghosh
- Department of Chemistry, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
| | - Suneel Kumar Srivastava
- Department of Chemistry, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
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18
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Roy A, Srivastava SK, Shrivastava SL, Mandal AK. Hierarchical Assembly of Nanodimensional Silver-Silver Oxide Physical Gels Controlling Nosocomial Infections. ACS Omega 2020; 5:32617-32631. [PMID: 33376899 PMCID: PMC7758962 DOI: 10.1021/acsomega.0c04957] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 11/27/2020] [Indexed: 05/15/2023]
Abstract
Microbial infections originating from medical care facilities are raising serious concerns across the globe. Therefore, nanotechnology-derived nanostructures have been investigated and explored due to their promising characteristics. In view of this, silver-based antimicrobial hydrogels as an alternative to antibiotic-based creams could play a crucial role in combating such infections. Toward this goal, we report a simple method for the synthesis and assembly of silver nanoparticles in a biopolymer physical gel derived from Abroma augusta plant in imparting antimicrobial properties against nosocomial pathogens. Synthesized silver nanoparticles (diameter, 30 ± 10 nm) were uniformly distributed inside the hydrogel. Such synthesized hydrogel assembly of silver nanoparticles dispersed in the biopolymer matrix exhibited hemocompatibility and antimicrobial and antibiofilm characteristics against nosocomial pathogens. The developed hydrogel as a surface coating offers reduced hardness and modulus value, thereby minimizing the brittleness tendency of the gel in the dried state. Hence, we believe that the hierarchical assembly of our hydrogel owing to its functional activity, host toxicity, and stability could possibly be used as an antimicrobial ointment for bacterial infection control.
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Affiliation(s)
- Anupam Roy
- Laboratory
of Food Chemistry and Technology, Department of Chemical Engineering, Birla Institute of Technology Mesra, Ranchi 835215, Jharkhand, India
- Agricultural
and Food Engineering Department, Indian
Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Suneel Kumar Srivastava
- Inorganic
Nanomaterials and Polymer Nanocomposite Laboratory, Department of
Chemistry, Indian Institute of Technology
Kharagpur, Kharagpur 721302, India
| | - Shanker Lal Shrivastava
- Agricultural
and Food Engineering Department, Indian
Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Amit Kumar Mandal
- Chemical
Biology Laboratory, Department of Sericulture, Raiganj University, Raiganj 733134, West Bengal, India
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Abstract
The present work is focused on the synthesis of bismuth sulfide (Bi2S3) nanorod/reduced graphene oxide (RGO) composites via a one-step hydrothermal method using GO and bismuth nitrate in 5 : 1, 3 : 1 and 2 : 1 weight ratios and their characterization. The morphological studies revealed the formation of homogeneously dispersed Bi2S3 nanorods on RGO sheets along with occasional wrapping in the Bi2S3 nanorod/RGO (3 : 1) composite. XRD, FTIR, Raman and XPS studies suggested the incorporation of Bi2S3 in RGO sheets. The galvanostatic charge-discharge measurements showed that the Bi2S3 nanorod/RGO (3 : 1) composite exhibited the highest specific capacitance (1932 F g-1) at 1 A g-1 in the presence of 2 M aqueous KOH in a three-electrode cell. This is ascribed to the enhanced contact area between metal sulfide nanoparticles and RGO, increased conductivity and synergistic effect of Bi2S3 and RGO. The optimized Bi2S3 nanorod/RGO (3 : 1) composite also maintained an excellent cycling stability with ∼100% capacitance retention after 700 cycles. It is noted that the supercapacitor performance of the Bi2S3 nanorod/RGO (3 : 1) composite was better than group V and VI metal chalcogenides and their nanocomposites reported in several previous studies.
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Affiliation(s)
- Kalyan Ghosh
- Department of Chemistry, Indian Institute of Technology, Kharagpur-721302, India.
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20
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Ahmad A, Srivastava SK, Das AK. Phase stability and the effect of lattice distortions on electronic properties and half-metallic ferromagnetism of Co 2FeAl Heusler alloy: an ab initiostudy. J Phys Condens Matter 2020; 32:415606. [PMID: 32575089 DOI: 10.1088/1361-648x/ab9f4f] [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: 02/25/2020] [Accepted: 06/23/2020] [Indexed: 06/11/2023]
Abstract
Density functional theory calculations within the generalized gradient approximation are employed to study the ground state of Co2FeAl. Various magnetic configurations are considered to find out its most stable phase. The ferromagnetic ground state of the Co2FeAl is energetically observed with an optimized lattice constant of 5.70 Å. After that, the system was subjected under uniform and non-uniform strains, to see their effects on spin polarization (P) and half-metallicity. The effect of spin-orbit coupling is considered in the present study. Half-metallicity (and 100%P) is retained only under uniform strains started from 0 to +4%, and dropped rapidly from 90% to 16% for the negative strains started from -1% to -6%. We find that the present system is much sensitive under tetragonal distortions as half-metallicity (and 100%P) is preserved only for the cubic case. The main reason for the loss of half-metallicity is due to the shift of the bands with respect to the Fermi level (EF). We also discuss the influence of these results on spintronics devices.
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Affiliation(s)
- Aquil Ahmad
- Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - S K Srivastava
- Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - A K Das
- Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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21
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Sagar P, Srivastava M, Prakash R, Srivastava SK. The fabrication of an MoS 2 QD-AuNP modified screen-printed electrode for the improved electrochemical detection of cefixime. Anal Methods 2020; 12:3014-3024. [PMID: 32930161 DOI: 10.1039/d0ay00899k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Herein, we report a voltammetric method for the nanomolar detection of cefixime, a third-generation antibiotic. The determination of cefixime is validated on a glassy carbon electrode (GCE) as well as on a screen-printed carbon electrode (SPCE). In the present study, we have reported a facile "one step simple hydrothermal synthesis" of MoS2 quantum dots and with the oxidation of aurochloric acid for the further formation of an MoS2 QD-AuNP composite. The as-synthesized nanocomposite was characterized via UV-Vis spectroscopy, FTIR spectroscopy, XRD, TEM and EDX techniques, and further applied in the modification of working electrodes, showing excellent electroactivity. The sensing of cefixime was done via cyclic and differential pulse voltammetry techniques. The presence of the only anodic peak in the voltammogram reveals the irreversible oxidation of cefixime in the potential range of about 1.3 ± 0.1 V vs. Ag/AgCl. The study was also performed at different scan rates, which indicate a diffusion-controlled mechanism. The proposed cefixime sensor showed a linear response in the concentration range of 0.33-90.82 μM (at S/N = 3) with a limit of detection (LOD) of 3.9-4.5 nm. The electrochemical sensitivity is calculated as 8.63 μA μM-1 cm-2 and 7.07 μA μM-1 cm-2 in buffer and pharmaceutical formulation (commercially available cefixime tablet), respectively. The effects of several interferents were also investigated. The proposed sensor is effectively used for estimating cefixime in phosphate buffer and the commercially available cefixime tablets with no cross-reactivity or matrix effects and shows a promising prospect for real applications.
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Affiliation(s)
- Pinky Sagar
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
| | - Monika Srivastava
- School of Materials Science and Technology, IIT (BHU) Varanasi, 221005, India
| | - Rajiv Prakash
- School of Materials Science and Technology, IIT (BHU) Varanasi, 221005, India
| | - S K Srivastava
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
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Manna K, Srivastava SK. Tuning of Shells in Trilaminar Core@Shell Nanocomposites in Controlling Electromagnetic Interference through Switching of the Shielding Mechanism. Langmuir 2020; 36:4519-4531. [PMID: 32237716 DOI: 10.1021/acs.langmuir.9b03313] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Fe3O4@SiO2@PPy core-shell nanocomposites were fabricated by the coating of SiO2 on Fe3O4 through base catalyzed hydrolysis of tetraethyl orthosilicate followed by encapsulation of polypyrrole (PPy). Subsequently, these trilaminar composites have been characterized by Fourier-transform infrared spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, Brunauer-Emmett-Teller, superconducting quantum interference devices, and measurement of the total shielding efficiency in the frequency range of 2-8 GHz. Our findings showed the highest total shielding efficiency (∼32 dB) of Fe3O4@SiO2@PPy (Fe3O4@SiO2/pyrrole wt/wt = 1:9) and followed reflection as the dominant shielding mechanism. Such performance was attributed to poor impedance matching between the PPy (conducting)/SiO2 (insulating) and high electrical conductivity of Fe3O4@SiO2@PPy. Alternatively, electromagnetic (EM) waves incident on the SiO2@PPy interface could also account for enhancing the total shielding efficiency of Fe3O4@SiO2@PPy because of multireflection/refraction. Our earlier work also showed excellent total shielding efficiency of Fe3O4@C@PANI nanocomposites, through absorption as the dominant shielding mechanism. These findings clearly suggest that EM interference shielding in Fe3O4@SiO2@PPy and Fe3O4@C@PANI trilaminar core@shell nanocomposites is controlled by tuning of the shells through switching of the mechanism.
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Affiliation(s)
- Kunal Manna
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, India 721302
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Dutta S, Manna K, Srivastava SK, Gupta AK, Yadav MK. Hollow Polyaniline Microsphere/Fe 3O 4 Nanocomposite as an Effective Adsorbent for Removal of Arsenic from Water. Sci Rep 2020; 10:4982. [PMID: 32188897 PMCID: PMC7080834 DOI: 10.1038/s41598-020-61763-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 12/20/2019] [Indexed: 11/10/2022] Open
Abstract
Polyaniline hollow microsphere (PNHM)/Fe3O4 magnetic nanocomposites have been synthesized by a novel strategy and characterized. Subsequently, PNHM/Fe3O4-40 (Fe3O4 content: 40 wt.%) was used as an adsorbent for the removal of arsenic (As) from the contaminated water. Our investigations showed 98–99% removal of As(III) and As(V) in the presence of PNHM/Fe3O4-40 following pseudo-second-order kinetics (R2 > 0.97) and equilibrium isotherm data fitting well with Freundlich isotherm (R2 > 0.98). The maximum adsorption capacity of As(III) and As(V) correspond to 28.27 and 83.08 mg g−1, respectively. A probable adsorption mechanism based on X-ray photoelectron spectroscopy analysis was also proposed involving monodentate-mononuclear/bidentate-binuclear As-Fe complex formation via legend exchange. In contrast to NO3− and SO42− ions, the presence of PO43− and CO32− co-ions in contaminated water showed decrease in the adsorption capacity of As(III) due to the competitive adsorption. The regeneration and reusability studies of spent PNHM/Fe3O4-40 adsorbent showed ~83% of As(III) removal in the third adsorption cycle. PNHM/Fe3O4-40 was also found to be very effective in the removal of arsenic (<10 μg L−1) from naturally arsenic-contaminated groundwater sample.
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Affiliation(s)
- Soumi Dutta
- School of Water Resources, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Kunal Manna
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Suneel Kumar Srivastava
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India. .,School of Energy Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
| | - Ashok Kumar Gupta
- School of Water Resources, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
| | - Manoj Kumar Yadav
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
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Maiti A, Srivastava SK. N, Ru Codoped Pellet Drum Bundle-Like Sb 2S 3: An Efficient Hydrogen Evolution Reaction and Hydrogen Oxidation Reaction Electrocatalyst in Alkaline Medium. ACS Appl Mater Interfaces 2020; 12:7057-7070. [PMID: 31944656 DOI: 10.1021/acsami.9b17368] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Though investigations have been made on several metal chalcogenides in hydrogen evolution reactions (HERs) and hydrogen oxidation reactions (HORs), antimony sulfide (Sb2S3) has not generated much attention. In this direction, the present work reports on the synthesis of N, Ru codoped pellet drum bundle-like antimony sulfide (Sb2S3) via a simple reflux method. Subsequent HER and HOR electrocatalytic investigations in 1 M KOH revealed their suitability as an efficient and inexpensive alternative to platinum, as is evident from the overpotential (72 mV at a current density of 10 mA cm-2), Tafel slope (193 mV/decade), exchange current density (1.42 mA/cm2), and breakdown potential at ∼0.6 V vs RHE, respectively. Such remarkable HER and HOR performance of N, Ru codoped Sb2S3 could be ascribed to the presence of relatively larger active sites compared to Sb2S3 and N-doped Sb2S3 individually due to synergistic effects arising from N and Ru dopants. Further, N, Ru codoped Sb2S3 demonstrated high intrinsic catalytic activity as indicated by its turnover frequency (2.03 s-1) and current loss, corresponding to 35% after 10 h of continuous amperometric i-t operation. Alternatively, such excellent catalytic performance of N, Ru codoped Sb2S3 arises due to geometric lattice defects with surface oxygen vacancy, and the availability of abundant edges and its pellet drum-like morphology also cannot be overruled.
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25
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Panwar P, Maurya SC, Nag RK, Srivastava SK, Chowdhary S. Incidence of Tuberculosis after Routine IPT (Isoniazid Preventive Therapy) in HIV Infected Patients at a Tertiary Center. J Assoc Physicians India 2020; 68:77. [PMID: 31979757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
| | - S C Maurya
- Ram Manohar Lohiya combined hospital, Lucknow
| | - R K Nag
- Ram Manohar Lohiya combined hospital, Lucknow
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26
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Gupta A, Chowdhury RK, Ray SK, Srivastava SK. Selective photoresponse of plasmonic silver nanoparticle decorated Bi 2Se 3 nanosheets. Nanotechnology 2019; 30:435204. [PMID: 31320602 DOI: 10.1088/1361-6528/ab3382] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The plasmon-enhanced photoresponse properties of a Ag nanoparticle decorated Bi2Se3 nanosheet (AGBS)/p-Si heterojunction device have been studied. The Ag nanoparticles, Bi2Se3 nanosheets, and AGBS nanocomposite are synthesized chemically. Microscopic investigations, ultimately of the AGBS nanocomposite, reveal that the Bi2Se3 nanosheets of thickness ∼20 nm and lateral dimension ∼1 μm are decorated with Ag nanoparticles of sizes 20-40 nm in the nanocomposite. The x-ray diffraction pattern of AGBS shows that apart from being in a metallic state, the Ag in the AGBS is also in the form of compounds with Bi, Se, and additionally O. This observation is further complemented by the x-ray photoelectron spectrum, which shows the presence of Ag0 and Ag+ states of Ag in AGBS. The UV-visible absorption spectra show the plasmonic peak of the Ag nanoparticles occurs at 420 nm; the peak is shifted to ∼500 nm in AGBS due to the modified dielectric environment of the nanoparticles. The AGBS/p-Si heterojunction shows excellent photoresponse properties, with a responsivity of 0.28 A/W, a fairly high detectivity of 4 × 1010 Jones, and an EQE of 71% under 10 V reverse bias at a 500 nm wavelength. The plasmon enhanced photoresponse at the selective wavelength makes this material attractive for high performance optoelectronic devices.
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Affiliation(s)
- Anu Gupta
- Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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Patra P, Khan SA, Bala M, Avasthi DK, Srivastava SK. Assessing a thermal spike model of swift heavy ion-matter interactions via Pd 1-xNi x/Si interface mixing. Phys Chem Chem Phys 2019; 21:16634-16646. [PMID: 31317146 DOI: 10.1039/c9cp02052g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The thermal spike model (TSM), a widely accepted mechanism of swift heavy ion (SHI)-matter interactions, provides explanation for various SHI induced effects, including mixing across interfaces. We assess the validity of the model via tuning the electron-phonon coupling strength (G) by taking a series Pd1-xNix of a completely solid soluble binary, and then observing Pd1-xNix/Si interface mixing induced by a combination of 100 MeV Au ion irradiation and 4 keV Ar ion sputtering. If the TSM truly describes the SHI-matter interaction mechanism, any non-linearity in x-variation of G must also result in a similar non-linearity in the x-dependence of mixing. Experimentally, the extent of mixing has been parametrized by the irradiation induced change Δσ2 in variances of Pd and Ni depth profiles derived from XPS. Computationally, G determined using density functional theory has been used to solve the equations appropriate to the TSM, and then an equivalent quantity L2, proportional to Δσ2, has been calculated. Both Δσ2(x) and L2(x) show non-linearities, albeit in slightly dissimilar ways, leading to a conjecture that the present work at least does not invalidate the TSM.
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Affiliation(s)
- Paramita Patra
- Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
| | - S A Khan
- Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - M Bala
- Department of Physics and Astrophysics, University of Delhi, New Delhi 110007, India
| | - D K Avasthi
- Amity Institute of Nanotechnology, Amity University, Sector 125, Noida 201313, India
| | - S K Srivastava
- Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
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Ghosh K, Srivastava SK, Puravankara S. Nanostructured ZrO₂/MWCNT Hybrid Materials: Fabrication, Characterization and Applications in Shielding of Electromagnetic Pollution. J Nanosci Nanotechnol 2019; 19:3367-3375. [PMID: 30744764 DOI: 10.1166/jnn.2019.15417] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
ZrO₂/MWCNT nanocomposites have been prepared by simple refluxing method and characterized by X-ray diffraction (XRD). Fourier-transform infrared spectroscopy (FTIR), and Raman analysis suggests chemical interactions present between zirconia and Multiwalled carbon nanotube (MWCNT) in the as prepared nanocomposites. Electromagnetic inteference shielding efficiencies (EMI SE) for the nanocomposites were found to increase with increasing amount of MWCNT loading. Highest EMI SE value of 29.1-30.5 dB was obtained for nanocomposite containing 15 wt% loading of MWCNT in the microwave frequency range of 2-8 GHz. This optimum performance is due to several factors like highest percentage of intermolecular H-bonding, highly defective, interconnected network structure, high conductivity and dielectric permittivities of the nanocomposites.
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Affiliation(s)
- Kalyan Ghosh
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
| | | | - Sreeraj Puravankara
- School of Energy Science and Engineering, Indian Institute of Technology, Kharagpur 721302, India
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Abstract
The present study is conducted on 300 PG-level college students in Haridwar, Uttarakhand (India). The aim of the present study is to examine the level of spiritual intelligence and mental health, to observe relationship between these two variables and also to identify the difference in spiritual intelligence and mental health across gender and educational background (arts and science). The purposive sampling technique is used to select 300 college students of both disciplines of arts and science from the four different government degree colleges/campuses in Haridwar. Integrated Spiritual Intelligence Scale and Mithila Mental Health Status Inventory are used to observe the level of these variables among college students. In the present study, correlational design is employed. All the statistical analyses are done with the help of computer software SPSS. To observe relationship Pearson correlation and to identify the difference t test are used. Findings of the study revealed that spiritual intelligence and mental health relate significantly among arts students, and male and female arts students separately have significant relationship between spiritual intelligence and mental health. Spiritual intelligence and mental health relate significantly among science students, and male and female science students separately have significant relationship between spiritual intelligence and mental health. No significant difference is found between male and female students in terms of spiritual intelligence. No significant difference is found between arts and science students in terms of spiritual intelligence. No significant difference is found between male and female students in terms of mental health. No significant difference is found between arts and science students in terms of mental health.
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Affiliation(s)
- Naveen Pant
- Department of Psychology, Gurukula Kangri University, Haridwar, U.K., India.
| | - S K Srivastava
- Department of Psychology, Gurukula Kangri University, Haridwar, U.K., India
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Srivastava SK, Mishra YK. Nanocarbon Reinforced Rubber Nanocomposites: Detailed Insights about Mechanical, Dynamical Mechanical Properties, Payne, and Mullin Effects. Nanomaterials (Basel) 2018; 8:E945. [PMID: 30453541 PMCID: PMC6266093 DOI: 10.3390/nano8110945] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [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: 09/23/2018] [Revised: 10/25/2018] [Accepted: 11/08/2018] [Indexed: 11/23/2022]
Abstract
The reinforcing ability of the fillers results in significant improvements in properties of polymer matrix at extremely low filler loadings as compared to conventional fillers. In view of this, the present review article describes the different methods used in preparation of different rubber nanocomposites reinforced with nanodimensional individual carbonaceous fillers, such as graphene, expanded graphite, single walled carbon nanotubes, multiwalled carbon nanotubes and graphite oxide, graphene oxide, and hybrid fillers consisting combination of individual fillers. This is followed by review of mechanical properties (tensile strength, elongation at break, Young modulus, and fracture toughness) and dynamic mechanical properties (glass transition temperature, crystallization temperature, melting point) of these rubber nanocomposites. Finally, Payne and Mullin effects have also been reviewed in rubber filled with different carbon based nanofillers.
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Affiliation(s)
- Suneel Kumar Srivastava
- Inorganic Materials and Polymer Nanocomposite Laboratory, Department of Chemistry, Indian Institute of Technology, Kharagpur-72102, India.
| | - Yogendra Kumar Mishra
- Functional Nanomaterials, Institute for Materials Science, Kiel University, Kaiserstr, D-24143 Kiel, Germany.
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Affiliation(s)
- Jayanta Mondal
- Department of Chemistry; Indian Institute of Technology Kharagpur; 721302 India
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Bhuyan B, Srivastava SK, Puravankara S, Mittal V. Magnesium Aluminium Layered Double Hydroxide Assisted Dispersion of Multiwalled Carbon Nanotubes for Enhanced Reinforcement of Ethylene-co-Vinyl Acetate Matrix. Macromol Res 2018. [DOI: 10.1007/s13233-018-6133-x] [Citation(s) in RCA: 3] [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: 11/30/2022]
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Bhuyan B, Srivastava SK, Pionteck J. Multiwalled Carbon Nanotubes/Hectorite Hybrid Reinforced Styrene Butadiene Rubber Nanocomposite: Preparation and Properties. POLYM-PLAST TECH MAT 2018. [DOI: 10.1080/03602559.2018.1493117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Bhagabat Bhuyan
- Department of Chemistry, Indian Institute of Technology, Kharagpur India
| | | | - Jürgen Pionteck
- Department of Functional Nanocomposites and Blends, Leibniz Institute of Polymer Research Dresden, Dresden, Germany
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Bhuyan B, Srivastava SK, Mittal V. Ethylene-co-Vinyl Acetate/MWCNTs/Hectorite Elastomeric Nanocomposites: Characterization and Electrical Properties. J Nanosci Nanotechnol 2018; 18:4057-4064. [PMID: 29442743 DOI: 10.1166/jnn.2018.15029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
MWCNTs/hectorite 3D hybrid filler was prepared from the 1:1 combination by weight of constituent MWCNTs (1D) and hectorite (2D) through simple dry grinding method. The resulting hybrid filler was subsequently utilized for the preparation of Ethylene-co-vinyl acetate (EVA)/MWCNTs/hectorite nanocomposites by solution intercalation method. Transmission electron microscopy and X-ray diffraction studies of the nanocomposites confirm homogeneous dispersion of the fillers in the polymer matrix. Mechanical, thermal and dielectric properties of neat EVA are significantly enhanced with increase in filler content. The improvement in tensile properties observed at 4 wt.% filler content are: 243% in tensile strength (1.78 MPa to 6.11 MPa), 105% in elongation at break (366% to 750%) and 426% in toughness (3.36 MPa to 17.67 MPa) without significant change (1.12 MPa to 1.31 MPa) in Young's modulus. Differential scanning calorimetry confirms significant increase in crystallinity, crystallisation temperature (Tc) and crystallite melting temperature (Tm) of the nanocomposites vis-a-vis neat EVA. Observed shift in Tc by more than 10 °C (~87 to ~98 °C) and Tm by more than 30 °C (~118 to ~151 °C) are really significant confirming the improved thermal stability of the nanocomposites. Maximum improvements in dielectric constant and AC conductivity observed at 5 wt.% hybrid filler content are ~25% and ~50% respectively. Superior mechanical properties of the nanocomposites combined with enhanced thermal stability and dielectric properties make it a prospective material for flexible dielectric applications. Properties attained can be attributed to improved polymer-filler interaction on account of homogeneous dispersion.
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Affiliation(s)
- Bhagabat Bhuyan
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
| | | | - Vikas Mittal
- Department of Chemical Engineering, The Petroleum Institute, Abu Dhabi, United Arab Emirates
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Raj S, Kumar S, Srivastava SK, Kar P, Roy P. Deposition of Tin Oxide Thin Films by Successive Ionic Layer Adsorption Reaction Method and Its Characterization. J Nanosci Nanotechnol 2018; 18:2569-2575. [PMID: 29442928 DOI: 10.1166/jnn.2018.14301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Tin oxide thin films were uniformly deposited by successive ionic layer adsorption reaction (SILAR) method on glass substrates using ethylene diamine as a complexing agent. The proper annealing treatment in air converts as-deposited amorphous films into crystalline and removes defects, reducing strain in the crystal lattice. The films were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), Atomic Force Microscopy (AFM), Fourier Transform Infrared (FTIR) spectroscopy. The film shows good optical transparency in the range of 200-1000 nm wavelength and electrical resistivity decreases upon annealing.
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Affiliation(s)
- Shipra Raj
- Department of Chemistry, Birla Institute of Technology, Mesra, Ranchi 835215, Jharkand, India
| | - Sharad Kumar
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Suneel Kumar Srivastava
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Pradip Kar
- Department of Chemistry, Birla Institute of Technology, Mesra, Ranchi 835215, Jharkand, India
| | - Poulomi Roy
- Department of Chemistry, Birla Institute of Technology, Mesra, Ranchi 835215, Jharkand, India
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Srivastava M, Nirala NR, Srivastava SK, Prakash R. A comparative Study of Aptasensor Vs Immunosensor for Label-Free PSA Cancer Detection on GQDs-AuNRs Modified Screen-Printed Electrodes. Sci Rep 2018; 8:1923. [PMID: 29386538 PMCID: PMC5792442 DOI: 10.1038/s41598-018-19733-z] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 11/27/2017] [Indexed: 12/02/2022] Open
Abstract
Label-free and sensitive detection of PSA (Prostate Specific Antigen) is still a big challenge in the arena of prostate cancer diagnosis in males. We present a comparative study for label-free PSA aptasensor and PSA immunosensor for the PSA-specific monoclonal antibody, based on graphene quantum dots-gold nanorods (GQDs-AuNRs) modified screen-printed electrodes. GQDs-AuNRs composite has been synthesized and used as an electro-active material, which shows fast electron transfer and catalytic property. Aptamer or anti-PSA has immobilized onto the surface of modified screen printed electrodes. Three techniques are used simultaneously, viz. cyclic voltammetry (CV), differential pulse voltammetry (DPV) and electrochemical impedence spectroscopy (EIS) to investigate the analytical performance of both PSA aptasensor and PSA immunosensor with its corresponding PSA antigen. Under optimum conditions, both sensors show comparable results with an almost same limit of detection (LOD) of 0.14 ng mL-1. The results developed with aptasensor and anti-PSA is also checked through the detection of PSA in real samples with acceptable results. Our study suggests some advantages of aptasensor in terms of better stability, simplicity and cost effectiveness. Further our present work shows enormous potential of our developed sensors for real application using voltammetric and EIS techniques simultaneous to get reliable detection of the disease.
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Affiliation(s)
- Monika Srivastava
- School of Materials Science and Technology, Indian Institute of Technology, Banaras Hindu University, Varanasi, 221005, India
| | - Narsingh R Nirala
- School of Materials Science and Technology, Indian Institute of Technology, Banaras Hindu University, Varanasi, 221005, India
| | - S K Srivastava
- School of Materials Science and Technology, Indian Institute of Technology, Banaras Hindu University, Varanasi, 221005, India
- Department of Physics, Banaras Hindu University, Varanasi, 221005, India
| | - Rajiv Prakash
- School of Materials Science and Technology, Indian Institute of Technology, Banaras Hindu University, Varanasi, 221005, India.
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Behera MD, Tripathi P, Das P, Srivastava SK, Roy PS, Joshi C, Behera PR, Deka J, Kumar P, Khan ML, Tripathi OP, Dash T, Krishnamurthy YVN. Remote sensing based deforestation analysis in Mahanadi and Brahmaputra river basin in India since 1985. J Environ Manage 2018; 206:1192-1203. [PMID: 29153551 DOI: 10.1016/j.jenvman.2017.10.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 05/20/2017] [Revised: 10/05/2017] [Accepted: 10/07/2017] [Indexed: 06/07/2023]
Abstract
Land use and land cover (LULC) change has been recognized as a key driver of global climate change by influencing land surface processes. Being in constant change, river basins are always subjected to LULC changes, especially decline in forest cover to give way for agricultural expansion, urbanization, industrialization etc. We used on-screen digital interpretation technique to derive LULC maps from Landsat images at three decadal intervals i.e., 1985, 1995 and 2005 of two major river basins of India. Rain-fed, Mahanadi river basin (MRB) attributed to 55% agricultural area wherein glacier-fed, Brahmaputra river basin (BRB) had only 16% area under agricultural land. Though conversion of forest land for agricultural activities was the major LULC changes in both the basins, the rate was higher for BRB than MRB. While water body increased in MRB could be primarily attributed to creation of reservoirs and aquaculture farms; snow and ice melting attributed to creation of more water bodies in BRB. Scrub land acted as an intermediate class for forest conversion to barren land in BRB, while direct conversion of scrub land to waste land and crop land was seen in MRB. While habitation contributed primarily to LULC changes in BRB, the proximity zones around habitat and other socio-economic drivers contributed to LULC change in MRB. Comparing the predicted result with actual LULC of 2005, we obtained >97% modelling accuracy; therefore it is expected that the Dyna-CLUE model has very well predicted the LULC for the year 2025. The predicted LULC of 2025 and corresponding LULC changes in these two basins acting as early warning, and with the past 2-decadal change analysis this study is believed to help the land use planners for improved regional planning to create balanced ecosystem, especially in a changing climate.
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Affiliation(s)
- M D Behera
- Centre for Oceans, Rivers, Atmosphere and Land Sciences (CORAL), Indian Institute of Technology Kharagpur, W.B., 721302, India.
| | - P Tripathi
- Centre for Oceans, Rivers, Atmosphere and Land Sciences (CORAL), Indian Institute of Technology Kharagpur, W.B., 721302, India.
| | - P Das
- Centre for Oceans, Rivers, Atmosphere and Land Sciences (CORAL), Indian Institute of Technology Kharagpur, W.B., 721302, India.
| | - S K Srivastava
- Indian Institute of Remote Sensing (ISRO), DehraDun, Uttarakhand, 248001, India.
| | - P S Roy
- Center for Earth & Space Sciences, University of Hyderabad, P.O. Central University, Telengana, 500046, India.
| | - C Joshi
- Indian Institute of Remote Sensing (ISRO), DehraDun, Uttarakhand, 248001, India.
| | - P R Behera
- Centre for Oceans, Rivers, Atmosphere and Land Sciences (CORAL), Indian Institute of Technology Kharagpur, W.B., 721302, India.
| | - J Deka
- Department of Forestry, NERIST, Itanagar, Arunachal Pradesh, 791109, India.
| | - P Kumar
- Odisha State Remote Sensing Applications Centre, Bhubaneswar, Odisha, 751023, India.
| | - M L Khan
- Department of Botany, Dr. Hari Singh Gour Central University, Sagar, M.P., 470003, India.
| | - O P Tripathi
- Department of Forestry, NERIST, Itanagar, Arunachal Pradesh, 791109, India.
| | - T Dash
- Odisha State Remote Sensing Applications Centre, Bhubaneswar, Odisha, 751023, India.
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Panigrahi R, Srivastava SK, Pionteck J. FABRICATION OF ELASTOMER BLENDS INVOLVING CORE (POLYSTYRENE)@SHELL (POLYANILINE) APPROACH, THEIR CHARACTERIZATION AND APPLICATIONS IN ELECTROMAGNETIC SHIELDING. Rubber Chemistry and Technology 2018. [DOI: 10.5254/rct.17.83730] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
ABSTRACT
Fabrication of rubber blends (EPDM, NBR, and NR) with the polystyrene (PS)-polyaniline (PANI) core-shell (PS@PANI) approach are reported for the first time, and their performance is compared with similar blends prepared by simple individual mixing of PS, PANI, and rubber under identical conditions. It is noted that the unique core-shell morphology accounted for its high surface to volume ratio, leading to the homogeneous dispersion of polyaniline shell and the slow release of polystyrene core into rubber matrix as established by high-resolution transmission electron microscopy. Fourier transform infrared studies show that property enhancement of rubber blends is not significantly affected by the interaction between respective blend components. Conductivity of core-shell rubber blends is found to be relatively higher due to the presence of the interconnected conducting network of PS@PANI within the rubber matrix. These rubber blends also exhibit superior mechanical and thermal properties due to dispersion and slow release of polystyrene core from the polyaniline shell. Electromagnetic interference (EMI) shielding analysis indicated the high shielding efficiency of rubber/PS@PANI blends (∼30 dB: 1–8 GHz) compared to the blends prepared individually from PS, PANI, and rubber (∼18 dB: 1–8 GHz). Such high performance of rubber blends is attributed to the trapping of electromagnetic waves through enhanced internal reflection due to the typical core-shell morphology of PS@PANI. It is anticipated that such low cost, light weight, corrosion resistant and environmentally stable sheets of PS@PANI rubber blends could provide an effective alternative as EMI shielding material for commercial application purposes.
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Affiliation(s)
- Ritwik Panigrahi
- Department of Chemistry, Indian Institute of Technology, Kharagpur-721302, India
| | | | - Jürgen Pionteck
- Leibniz-Institut für Polymerforschung Dresden e.v., Abt. Funktionale Nanokomposite und Blends Hohe Str. 6, D-01069 Dresden, Germany
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Srivastava SK, Marathe N, Bhosale S, Purohit S, Raj A, Manghwani J. Paratesticular Paraganglioma with Metastasis to D1 Vertebra- A Case Report and Review of Literature. J Orthop Case Rep 2018; 8:92-95. [PMID: 30915305 PMCID: PMC6424310 DOI: 10.13107/jocr.2250-0685.1276] [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] [Indexed: 11/29/2022] Open
Abstract
INTRODUCTION Paragangliomas are relatively rare tumors, accounting for only about 0.3% of all neoplasms. Most paragangliomas are defined as benign in nature, but 10-% possess metastatic potential. There have been scattered reports of metastatic paraganglioma in the literature, but in rare circumstances, paragangliomas can metastasize to the spinal column causing destruction or compression of the spinal cord, clinically manifesting as pain or neurological deficit. CASE REPORT We present a case of a 43-year-old man who presented with paresthesia and paraparesis and was found to have pathologic fracture involving D1 vertebra as a manifestation of metastasis from a non-secretory right paratesticular paraganglioma. CONCLUSIONS We will review the literature on the topic of metastatic paraganglioma, management of paragangliomas involving spine, and touch on the importance of angioembolization, staged procedures, and a team approach.
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Affiliation(s)
- S K Srivastava
- Department of Orthopedics, Seth GS Medical College and KEM Hospital, Mumbai, Maharashtra, India
| | - Nandan Marathe
- Department of Orthopedics, Seth GS Medical College and KEM Hospital, Mumbai, Maharashtra, India,Address of Correspondence: Dr. Nandan Marathe, Saraswati Prasad, Gaul Wada, Vasai (w), Palghar—, Maharashtra, India. E-mail:
| | - Sunil Bhosale
- Department of Orthopedics, Seth GS Medical College and KEM Hospital, Mumbai, Maharashtra, India
| | - Shaligram Purohit
- Department of Orthopedics, Seth GS Medical College and KEM Hospital, Mumbai, Maharashtra, India
| | - Aditya Raj
- Department of Orthopedics, Seth GS Medical College and KEM Hospital, Mumbai, Maharashtra, India
| | - Jitesh Manghwani
- Department of Orthopedics, Seth GS Medical College and KEM Hospital, Mumbai, Maharashtra, India
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Karmakar A, Srivastava SK. Interconnected Copper Cobaltite Nanochains as Efficient Electrocatalysts for Water Oxidation in Alkaline Medium. ACS Appl Mater Interfaces 2017; 9:22378-22387. [PMID: 28598596 DOI: 10.1021/acsami.7b03029] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The present work is focused on the protective-agent-free synthesis of interconnected copper cobaltite (Cu0.3Co2.7O4) nanochains by temperature-controlled solvothermal method followed by post-thermal treatment of the precursors. Furthermore, Cu0.3Co2.7O4 interconnected nanochains are employed as electrocatalyst for water oxidation in alkaline medium for the first time. Extensive studies of physiochemical properties showed the formation of interconnected 1D nanochains of Cu0.3Co2.7O4 exhibiting a larger specific surface area (139.5 m2 g-1) and enhanced electrochemical water oxidation ability. It delivered excellent mass activity (∼50.0 A g-1), high anodic current density (∼124.9 mA cm-2 at 1.75 V versus reversible hydrogen electrode), and turnover frequency (∼4.26 × 10-2 s-1) in 1.0 M KOH. These Cu0.3Co2.7O4 nanochains also demonstrated low overpotential (∼351 mV) and good cycling stability (1000 cycles) in strong alkaline media. The fabricated Cu0.3Co2.7O4 nanochains could be a good alternative to the commercial OER electrocatalysts (RuO2 and IrO2) and also advantageous to the development of efficient, cost-effective, and durable electrocatalysts for electrochemical water splitting.
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Affiliation(s)
- Ayon Karmakar
- Inorganic Materials and Nanocomposite Laboratory, Department of Chemistry, Indian Institute of Technology , Kharagpur 721302, India
| | - Suneel Kumar Srivastava
- Inorganic Materials and Nanocomposite Laboratory, Department of Chemistry, Indian Institute of Technology , Kharagpur 721302, India
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Srivastava SK, Shinde S, Singh SK, Mehrotra S, Verma MR, Singh AK, Nandi S, Srivastava N, Singh SK, Goswami TK, Bhure SK, Kumar H, Ghosh SK. Antisperm antibodies in repeat-breeding cows: Frequency, detection and validation of threshold levels employing sperm immobilization, sperm agglutination and immunoperoxidase assay. Reprod Domest Anim 2017; 52:195-202. [DOI: 10.1111/rda.12877] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Accepted: 09/24/2016] [Indexed: 11/30/2022]
Affiliation(s)
- SK Srivastava
- Division of Animal Reproduction; ICAR-Indian Veterinary Research Institute; Izatnagar India
| | - S Shinde
- Division of Animal Reproduction; ICAR-Indian Veterinary Research Institute; Izatnagar India
| | - SK Singh
- Division of Animal Reproduction; ICAR-Indian Veterinary Research Institute; Izatnagar India
| | - S Mehrotra
- AI Laboratory, LPM; ICAR-Indian Veterinary Research Institute; Izatnagar India
| | - MR Verma
- Division of LES & IT; ICAR-Indian Veterinary Research Institute; Izatnagar India
| | - AK Singh
- Division of Animal Reproduction; ICAR-Indian Veterinary Research Institute; Izatnagar India
| | - S Nandi
- Centre for Animal Disease Research and Diagnosis; ICAR-Indian Veterinary Research Institute; Izatnagar India
| | - N Srivastava
- Quality Control, Semen Freezing Laboratory; ICAR-Central Institute for Research on Cattle; Meerut India
| | - SK Singh
- Division of Animal Reproduction; ICAR-Indian Veterinary Research Institute; Izatnagar India
| | - TK Goswami
- Immunology Section; Indian Veterinary Research Institute; Izatnagar India
| | - SK Bhure
- Biochemistry and Food Science Sections; Indian Veterinary Research Institute; Izatnagar India
| | - H Kumar
- Division of Animal Reproduction; ICAR-Indian Veterinary Research Institute; Izatnagar India
| | - SK Ghosh
- Division of Animal Reproduction; ICAR-Indian Veterinary Research Institute; Izatnagar India
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Perumal P, Srivastava SK, Ghosh SK, Baruah KK, Bag S, Rajoria JS, Kumar K, Rajkhowa C, Pande M, Srivastava N. Effects of low-density lipoproteins as additive on quality parameters and oxidative stress following cryopreservation of mithun (Bos frontalis
) spermatozoa. Reprod Domest Anim 2016; 51:708-16. [DOI: 10.1111/rda.12735] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 06/20/2016] [Indexed: 11/26/2022]
Affiliation(s)
- P Perumal
- Animal Reproduction Laboratory; ICAR-NRC on Mithun; Jharnapani Nagaland India
| | - SK Srivastava
- Division of Animal Reproduction; ICAR-Indian Veterinary Research Institute; Izatnagar UP India
| | - SK Ghosh
- Division of Animal Reproduction; ICAR-Indian Veterinary Research Institute; Izatnagar UP India
| | - KK Baruah
- Division of Physiology; NRC on Mithun, ICAR; Jharnapani Nagaland India
| | - S Bag
- Division of Physiology and Climatology; ICAR-Indian Veterinary Research Institute; Izatnagar UP India
| | - JS Rajoria
- Division of Animal Reproduction; ICAR-Indian Veterinary Research Institute; Izatnagar UP India
| | - K Kumar
- Division of Physiology and Climatology; ICAR-Indian Veterinary Research Institute; Izatnagar UP India
| | - C Rajkhowa
- ICAR-NRC on Mithun; Jharnapani Nagaland India
| | - M Pande
- Semen Freezing Laboratory; ICAR-Central Institute for Research on Cattle; Meerut UP India
| | - N Srivastava
- Semen Freezing Laboratory; ICAR-Central Institute for Research on Cattle; Meerut UP India
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43
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Yadav UCS, Srivastava SK. Cysteinyl Leukotrienes (CysLTs): Role in Obesity-Induced Asthma. Curr Mol Med 2016; 15:598-605. [PMID: 26321758 DOI: 10.2174/1566524015666150831130954] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Revised: 07/25/2015] [Accepted: 08/25/2015] [Indexed: 11/22/2022]
Abstract
Epidemiological studies associate obesity with onset of asthma, especially in obese children, suggesting obesity as the risk factor for asthma. Obesity-induced chronic inflammation has been implicated in the lung inflammation, yet specific mediators and mechanisms are lacking. Obesity is associated with increased expression of 5-lipoxygenase (5-LO) pathway and increased Leukotrienes (LTs) production has been observed in obese asthma patients. However, the precise mechanism that predisposes lungs inflammation in obese is not clearly understood. This article discusses the production and regulation of LTs in obese individuals and presents probable mechanisms regarding the role of LTs in lung inflammation that may lead to obesity-induced asthma. Leukotrienes are well known mediators of asthma but their role in obesity-induced asthma is not clearly understood and thus needs further research. Since efficient antagonists and inhibitors of 5-LO pathways are known, understanding of molecular mechanism of LTs, especially Cysteinyl-LTs, in obesity-induced asthma could lead to optimal treatment regimens for the prevention and treatment of asthma in obese individuals.
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Affiliation(s)
- U C S Yadav
- School of Life Sciences, Central University of Gujarat, Gandhinagar, Gujarat - 382030, India.
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Chhetri S, Samanta P, Murmu NC, Srivastava SK, Kuila T. Effect of Dodecyal Amine Functionalized Graphene on the Mechanical and Thermal Properties of Epoxy-Based Composites. POLYM ENG SCI 2016. [DOI: 10.1002/pen.24355] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Suman Chhetri
- Surface Engineering and Tribology Division; Council of Scientific and Industrial Research-Central Mechanical Engineering Research Institute; Durgapur West Bengal 713209 India
- CSIR-CMERI, Campus; Academy of Scientific and Innovative Research (AcSIR); Durgapur West Bengal 713209 India
| | - Pranab Samanta
- Surface Engineering and Tribology Division; Council of Scientific and Industrial Research-Central Mechanical Engineering Research Institute; Durgapur West Bengal 713209 India
- CSIR-CMERI, Campus; Academy of Scientific and Innovative Research (AcSIR); Durgapur West Bengal 713209 India
| | - Naresh Chandra Murmu
- Surface Engineering and Tribology Division; Council of Scientific and Industrial Research-Central Mechanical Engineering Research Institute; Durgapur West Bengal 713209 India
- CSIR-CMERI, Campus; Academy of Scientific and Innovative Research (AcSIR); Durgapur West Bengal 713209 India
| | | | - Tapas Kuila
- Surface Engineering and Tribology Division; Council of Scientific and Industrial Research-Central Mechanical Engineering Research Institute; Durgapur West Bengal 713209 India
- CSIR-CMERI, Campus; Academy of Scientific and Innovative Research (AcSIR); Durgapur West Bengal 713209 India
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Kartick B, Srivastava SK, Chandra A. Graphene/Nickel Nanofiber Hybrids for Catalytic and Microbial Fuel Cell Applications. J Nanosci Nanotechnol 2016; 16:303-311. [PMID: 27398458 DOI: 10.1166/jnn.2016.10667] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The present work deals with the preparation of fcc-nickel (Ni) nanofibers and Graphene/Ni hybrids. The analysis of XRD, FTIR and Raman data confirms the formation of pure Ni, graphite oxide, reduced graphene and their hybrids. SEM micrographs clearly show the decoration of Ni nanofibers on the graphene flakes. The synthesized Ni-based hybrid systems can have applications in areas ranging from: magnetism, catalysis to microbial fuel cells. The vibrating sample magnetometer (VSM) investigations reveal that the hybrid structure shows hysteresis loop similar to that expected from a superparamagnetic system. When the same hybrid structure is used as catalyst for decolourization of 4-nitrophenol, the maximum rate constant of 0.1 min⁻¹ can be obtained. The catalytic activity also shows dependence on the loading concentration of Ni. The enhanced performance can be explained on the basis of synergistic effect between graphene and nickel nanofibers. The developed hybrids have also been applied as catalyst for cathode in microbial fuel cells and the studies showed improved power density compared to conventional microbial fuel cells (MFCs).
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Raj S, Srivastava SK, Kar P, Roy P. Three-dimensional NiCo2O4/NiCo2S4hybrid nanostructure on Ni-foam as a high-performance supercapacitor electrode. RSC Adv 2016. [DOI: 10.1039/c6ra19376e] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The high performance electrode for supercapacitor based on NiCo2O4/NiCo2S4hybrid nanostructures on Ni-foam were successfully fabricated by a facile pH-controlled ammonia evaporation technique.
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Affiliation(s)
- Shipra Raj
- Department of Chemistry
- Birla Institute of Technology Mesra
- Ranchi 835215
- India
| | | | - Pradip Kar
- Department of Chemistry
- Birla Institute of Technology Mesra
- Ranchi 835215
- India
| | - Poulomi Roy
- Department of Chemistry
- Birla Institute of Technology Mesra
- Ranchi 835215
- India
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Roy S, Srivastava SK, Pionteck J, Mittal V. Assembly of layered double hydroxide on multi-walled carbon nanotubes as reinforcing hybrid nanofiller in thermoplastic polyurethane/nitrile butadiene rubber blends. POLYM INT 2015. [DOI: 10.1002/pi.5032] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Saheli Roy
- Department of Chemistry; Indian Institute of Technology; Kharagpur - 721302 India
| | | | - Jürgen Pionteck
- Leibniz Institute of Polymer Research Dresden; Hohe Strasse 6 D-01069 Dresden Germany
| | - Vikas Mittal
- Department of Chemical Engineering; Petroleum Institute; Abu Dhabi United Arab Emirates
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Panicker CY, Varghese HT, Nayak PS, Narayana B, Sarojini BK, Fun HK, War JA, Srivastava SK, Van Alsenoy C. Infrared spectrum, NBO, HOMO-LUMO, MEP and molecular docking studies (2E)-3-(3-nitrophenyl)-1-[4-piperidin-1-yl]prop-2-en-1-one. Spectrochim Acta A Mol Biomol Spectrosc 2015; 148:18-28. [PMID: 25863456 DOI: 10.1016/j.saa.2015.03.065] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [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: 10/24/2014] [Revised: 01/25/2015] [Accepted: 03/05/2015] [Indexed: 06/04/2023]
Abstract
FT-IR spectrum of (2E)-3-(3-nitrophenyl)-1-[4-piperidin-1-yl]prop-2-en-1-one was recorded and analyzed. The vibrational wavenumbers were computed using HF and DFT quantum chemical calculations. The data obtained from wavenumber calculations are used to assign IR bands. Potential energy distribution was done using GAR2PED software. The geometrical parameters of the title compound are in agreement with the XRD results. NBO analysis, HOMO-LUMO, first and second hyperpolarizability and molecular electrostatic potential results are also reported. The possible electrophile attacking sites of the title molecule is identified using MEP surface plot study. Molecular docking results predicted the anti-leishmanic activity for the compound.
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Affiliation(s)
- C Yohannan Panicker
- Department of Physics, TKM College of Arts and Science, Kollam, Kerala, India.
| | | | - Prakash S Nayak
- Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Karanataka, India
| | - B Narayana
- Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Karanataka, India
| | - B K Sarojini
- Industrial Chemistry-Division, Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Karanataka, India
| | - H K Fun
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, Penang 11800 Malaysia; Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Javeed Ahamad War
- Department of Chemistry, Dr.H.S.Gour Central University, Sagar, M.P., India
| | - S K Srivastava
- Department of Chemistry, Dr.H.S.Gour Central University, Sagar, M.P., India
| | - C Van Alsenoy
- University of Antwerp, Chemistry Department, Universiteitsplein 1, B2610 Antwerp, Belgium
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Ulahannan RT, Panicker CY, Varghese HT, Musiol R, Jampilek J, Van Alsenoy C, War JA, Srivastava SK. Molecular structure, FT-IR, FT-Raman, NBO, HOMO and LUMO, MEP, NLO and molecular docking study of 2-[(E)-2-(2-bromophenyl)ethenyl]quinoline-6-carboxylic acid. Spectrochim Acta A Mol Biomol Spectrosc 2015; 151:184-197. [PMID: 26142173 DOI: 10.1016/j.saa.2015.06.077] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [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: 11/10/2014] [Revised: 06/20/2015] [Accepted: 06/22/2015] [Indexed: 06/04/2023]
Abstract
The optimized molecular structure, vibrational frequencies, corresponding vibrational assignments of 2-[(E)-2-(2-bromophenyl)ethenyl]quinoline-6-carboxylic acid have been investigated experimentally and theoretically using Gaussian09 software package. Potential energy distribution of the normal modes of vibrations was done using GAR2PED program. (1)H NMR chemical shifts calculations were carried out by using B3LYP functional with SDD basis set. The HOMO and LUMO analysis is used to determine the charge transfer within the molecule. The stability of the molecule arising from hyper-conjugative interaction and charge delocalization has been analyzed using NBO analysis. MEP was performed by the DFT method and the predicted infrared intensities and Raman activities have also been reported. The calculated geometrical parameters are in agreement with that of similar derivatives. The title compound forms a stable complex with PknB as is evident from the binding affinity values and the molecular docking results suggest that the compound might exhibit inhibitory activity against PknB and this may result in development of new anti-tuberculostic agents.
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Affiliation(s)
- Rajeev T Ulahannan
- Department of Physics, TKM College of Arts and Science, Kollam, Kerala, India
| | - C Yohannan Panicker
- Department of Physics, TKM College of Arts and Science, Kollam, Kerala, India.
| | | | - Robert Musiol
- Institute of Chemistry, University of Silesia, Szkolna 9, 40007 Katowice, Poland
| | - Josef Jampilek
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1/3, 61242 Brno, Czech Republic
| | - Christian Van Alsenoy
- University of Antwerp, Chemistry Department, Universiteitsplein 1, B2610 Antwerp, Belgium
| | - Javeed Ahmad War
- Department of Chemistry, Dr. H.S. Gour Central University, Sagar, M.P. 470003, India
| | - S K Srivastava
- Department of Chemistry, Dr. H.S. Gour Central University, Sagar, M.P. 470003, India
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Panicker CY, Varghese HT, Manjula PS, Sarojini BK, Narayana B, War JA, Srivastava SK, Van Alsenoy C, Al-Saadi AA. FT-IR, HOMO-LUMO, NBO, MEP analysis and molecular docking study of 3-Methyl-4-{(E)-[4-(methylsulfanyl)-benzylidene]amino}1H-1,2,4-triazole-5(4H)-thione. Spectrochim Acta A Mol Biomol Spectrosc 2015; 151:198-207. [PMID: 26142174 DOI: 10.1016/j.saa.2015.06.076] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [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: 10/24/2014] [Revised: 06/21/2015] [Accepted: 06/22/2015] [Indexed: 06/04/2023]
Abstract
FT-IR spectrum of 3-Methyl-4-{(E)-[4-(methylsulfanyl)-benzylidene]amino}1H-1,2,4-triazole-5(4H)-thione was recorded and analysed. The vibrational wavenumbers were computed and at HF and DFT levels of theory. The data obtained from wavenumber calculations are used to assign the vibrational bands obtained in the IR spectrum. The NH stretching wavenumber is red shifted in the IR spectrum from the computed value, which indicates the weakening of the NH bond. The geometrical parameters of the title compound are in agreement with the XRD results. NBO analysis, HOMO-LUMO, first and second order hyperpolarizability and molecular electrostatic potential results are also reported. From the MEP map it is evident that the negative regions are localized over the sulphur atoms and N3 atom of triazole ring and the maximum positive region is localized on NH group, indicating a possible site for nucleophilic attack. Prediction of Activity Spectra analysis of the title compound predicts anti-tuberculostic activity with probability to be active value of 0.543. Molecular docking studies reveal that the triazole nitrogen atoms and the thione sulphur atom play vital role in bonding and results draw us to the conclusion that the compound might exhibit anti-tuberculostic activity.
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Affiliation(s)
- C Yohannan Panicker
- Department of Physics, TKM College of Arts and Science, Kollam, Kerala, India.
| | | | - P S Manjula
- Department of Chemistry, P.A. College of Engineering, Nadupadavu, D.K., Mangalore, Karnataka, India
| | - B K Sarojini
- Industrial Chemistry-Division, Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Karnataka, India
| | - B Narayana
- Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Karanataka, India
| | - Javeed Ahamad War
- Department of Chemistry, Dr. H.S. Gour Central University, Sagar, M.P., India
| | - S K Srivastava
- Department of Chemistry, Dr. H.S. Gour Central University, Sagar, M.P., India
| | - C Van Alsenoy
- University of Antwerp, Chemistry Department, Universiteitsplein 1, B2610 Antwerp, Belgium
| | - Abdulaziz A Al-Saadi
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
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