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Yamin M, Ghouri ZK, Rohman N, Syed JA, Skelton A, Ahmed K. Unravelling pH/pKa influence on pH-responsive drug carriers: Insights from ibuprofen-silica interactions and comparative analysis with carbon nanotubes, sulfasalazine, and alendronate. J Mol Graph Model 2024; 128:108720. [PMID: 38324969 DOI: 10.1016/j.jmgm.2024.108720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 01/04/2024] [Accepted: 01/23/2024] [Indexed: 02/09/2024]
Abstract
This study employs density functional theory to explore the interaction between ibuprofen (IBU) and silica, emphasizing the influence of the trimethylsilyl (TMS) functional group for designing pH-responsive drug carriers. The surface (S) and drug (D) molecules' neutral (0) or deprotonated (-1) states were taken into consideration during the investigation. The likelihood of these states was determined based on the pKa values and the desired pH conditions. To calculate the pH-dependent interaction energy (EintpH), four different situations have been identified: S0D0, S0D-1, S-1D0, and S-1D-1.The electrostatic component of interaction energy aligns favorably with its theoretical value in both the Debye-Hückel and Grahame models. The investigation has gathered first-hand experimental data on the drug loading and release of pH-responsive mesoporous silica nanoparticles. Effective drug loading was observed in the acidic environment of the stomach (pH 2-5), followed by a release in the slightly basic to neutral pH of the small intestine (pH 7.4), These findings align with existing literature. The results revealed horizontal drug adherence on silica surfaces, improving binding capabilities. Comparisons were made with combinations involving carboxylated carbon nanotubes and ibuprofen, silica, and sulfasalazine, and silica and alendronate, exploring drug loading/release dynamics associated with positive/negative interaction energies. The investigation, supported by experimental data, contributes valuable insights into pH-responsive mesoporous silica nanoparticles, offering new design possibilities for drug carriers.
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Affiliation(s)
- Marriam Yamin
- Department of Biosciences, Salim Habib University, Karachi, Pakistan
| | - Zafar Khan Ghouri
- L. E. J. Nanotechnology Centre, H. E. J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan; Net Zero Industry Innovation Centre, Teesside University, Middlesbrough, Tees Valley TS1 3BX, UK
| | - Nashiour Rohman
- Department of Chemistry, College of Science, Sultan Qaboos University, P. O. Box 36, Al-khoudh, Muscat P. C. 123, Oman
| | - Junaid Ali Syed
- L. E. J. Nanotechnology Centre, H. E. J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Adam Skelton
- Department of Pharmaceutical Sciences, University of KwaZulu-Natal, Durban, 4000, South Africa.
| | - Khalid Ahmed
- L. E. J. Nanotechnology Centre, H. E. J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan.
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Rohman N, Ahmed K, Skelton AA, Mohiuddin T, Khan I, Selvaraj R, Yamin M. Theoretical insights and implications of pH-dependent drug delivery systems using silica and carbon nanotube. J Mol Graph Model 2023; 125:108609. [PMID: 37647724 DOI: 10.1016/j.jmgm.2023.108609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/14/2023] [Accepted: 08/21/2023] [Indexed: 09/01/2023]
Abstract
In this paper we have studied the density functional theory of four drugs ibuprofen, alendronate, Sulfasalazine and paracetamol with quartz, propylamine, trimethylamine functionalized quartz and carboxyl modified carbon nanotube. The attractive and repulsive interaction energies between drugs and quartz is obtained at various pH values. The attractive and repulsive energies are well correlated with experimental drug loading and releasing behavior by mesoporous silica nanoparticles. Further, a theoretical model is developed that accounts the electrostatic interaction between silica and drug and the model can predict the drug loading and releasing behavior by silica nanoparticles at various pH values. Sulfasalazine can be taken orally and loaded with trimethyl ammonium functionalized mesoporous silica nanoparticles, which keeps the drug in tact with the carrier in the acidic environment of the stomach and releases it into the neutral or basic medium of the small intestine. Alendronate may be loaded and released from propylamine functionalized mesoporous silica nanoparticles in the ranges of 1-5 and > 8, respectively. Ibuprofen is absorbed in an acidic environment and released in basic conditions for carboxyl modified carbon nanotube. The loading and releasing pH ranges for paracetamol in trimethylammonium functionalized mesoporous silica nanoparticles are 4-8 and >8, respectively. We also convert the pH-dependent variant of the diffusion-controlled Higuchi equation. We have changed the original Higuchi equation to produce the pH-dependent variation by incorporating the Nernst-Planck equation into Flick's first law. The updated equation could be used to forecast when medication particles with varying release times will emerge from a nanoparticles matrix.
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Affiliation(s)
- Nashiour Rohman
- Department of Physics, College of Science, Sultan Qaboos University, P. O. Box 36, Al-khoudh, Muscat, P. C. 123, Oman.
| | - Khalid Ahmed
- L. E. J. Nanotechnology Centre, H. E. J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Adam A Skelton
- Department of Pharmaceutical Sciences, University of KwaZulu-Natal, Durban, 4000, South Africa.
| | - Tariq Mohiuddin
- Department of Physics, College of Science, Sultan Qaboos University, P. O. Box 36, Al-khoudh, Muscat, P. C. 123, Oman
| | - Imran Khan
- Department of Chemistry, College of Science, Sultan Qaboos University, P. O. Box 36, Al-khoudh, Muscat, P. C. 123, Oman
| | - Rengaraj Selvaraj
- Department of Chemistry, College of Science, Sultan Qaboos University, P. O. Box 36, Al-khoudh, Muscat, P. C. 123, Oman
| | - Marriam Yamin
- Department of Biosciences, Salim Habib University, Karachi, Pakistan
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Saini S, Saini P, Kumar K, Sethi M, Meena P, Gurjar A, Dandia A, Dhuria T, Parewa V. Unlocking the Molecular Behavior of Natural Amine-Targeted Carbon Quantum Dots for the Synthesis of Diverse Pharmacophore Scaffolds via an Unusual Nanoaminocatalytic Route. ACS APPLIED MATERIALS & INTERFACES 2023; 15:49083-49094. [PMID: 37819203 DOI: 10.1021/acsami.3c08812] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Despite the fact that carbon quantum dots (CQDs) have significant catalytic potential, only emblematic applications that rely on simple acid-base or hydrogen-bonding activation pathways have been reported. In this study, natural amine-targeted CQDs (NAT-CQDs) have been successfully fabricated using a sustainable technique that harnesses a renewable green source. Based on a holistic sustainable assessment, the present approach for the synthesis of NAT-CQDs surpasses previously reported methods in terms of estimated circular and good-manufacturing-practice metrics. A set of spectroscopic and analytical techniques, including FTIR, XPS, conductometric assay, pH titration, 19FNMR, and 13CNMR confirms the presence of the assessable amino-rich groups (0.0083N) at the surface of NAT-CQDs. The occurrence of surface amine groups unlocked the molecular behavior of as-prepared NAT-CQDs and makes them an unprecedented nanoaminocatalytic platform for the synthesis of diverse pharmacophore scaffolds (>40 examples) via a one-pot Knoevenagel/(aza) Michael addition reaction in water at room temperature. The assessable amine group can covalently activate carbonyl groups through nucleophilic iminium activation modes in water and facilitate the ability to build valuable and therapeutic scaffolds on a gram scale. By transferring significant molecular primacy at the frontier of nanoscale materials, NAT-CQDs can thus bridge the gap between the nanoscale and molecular domains. This protocol can also be applied for the preparation of therapeutic anticoagulant drugs, warfarin, and coumachlor. All the reactions exhibited a high atom economy, low E-factor, low process mass intensity (PMI), high reaction mass efficiency (RME), high carbon efficiency (CE), and high catalyst reusability with overall high sustainable values. NAT-CQDs show high recyclability, and the spectral data of reused catalysts indicate that the NAT-CQDs maintained their surface chemistry and electronic properties, suggesting their stability under the tested conditions. This study presents a remarkable instance of NAT-CQDs showcasing covalent catalysis. Expanding on the aforementioned design concept, the utilization of NAT-CQDs' "potential" as distinct colloidal organocatalysts in aqueous environments at the molecular level introduces valuable prospects for aminocatalytic pathways.
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Affiliation(s)
- Surendra Saini
- Centre of Advanced Studies, Department of Chemistry, University of Rajasthan, Jaipur 302004, India
| | - Pratibha Saini
- Centre of Advanced Studies, Department of Chemistry, University of Rajasthan, Jaipur 302004, India
- Institute Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, D-07743 Jena, Germany
| | - Krishan Kumar
- Centre of Advanced Studies, Department of Chemistry, University of Rajasthan, Jaipur 302004, India
| | - Mukul Sethi
- Centre of Advanced Studies, Department of Chemistry, University of Rajasthan, Jaipur 302004, India
| | - Priyanka Meena
- Centre of Advanced Studies, Department of Chemistry, University of Rajasthan, Jaipur 302004, India
| | - Aditya Gurjar
- Centre of Advanced Studies, Department of Chemistry, University of Rajasthan, Jaipur 302004, India
| | - Anshu Dandia
- Centre of Advanced Studies, Department of Chemistry, University of Rajasthan, Jaipur 302004, India
| | - Tanya Dhuria
- Centre of Advanced Studies, Department of Chemistry, University of Rajasthan, Jaipur 302004, India
| | - Vijay Parewa
- Centre of Advanced Studies, Department of Chemistry, University of Rajasthan, Jaipur 302004, India
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Asefi S, Moghimi H. Removal of carboxylated multi-walled carbon nanotubes (MWCNT-COOH) from the environment by Trametes versicolor: a simple, cost-effective, and eco-friendly method. Sci Rep 2023; 13:16139. [PMID: 37752200 PMCID: PMC10522686 DOI: 10.1038/s41598-023-43517-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 09/25/2023] [Indexed: 09/28/2023] Open
Abstract
Nanotechnology has increased the release of nanoparticles into the environment, which poses a risk to human health and the ecosystem. Therefore, finding ways to eliminate these hazardous particles from the environment is crucial. This research studied the ability of Trametes versicolor fungi to remove carboxylated multi-walled carbon nanotubes. The study analyzed the impact of pH, MWCNT-COOH concentration, and initial fungal growth time on the removal process. The properties of the adsorbent were measured before and after the biosorption process using SEM, FTIR, and EDS techniques. The results showed that the live biomass of T. versicolor was more effective in removing nanoparticles than dead biomass at 30 °C and pH 7. An increase in carbon nanotube concentration from 5 to 20 mg. mL-1 decreased biosorption potential from 100% to 28.55 ± 1.7%. The study also found that an increase in initial fungal growth time led to higher biomass production and adsorption capacity, increasing biosorption ability for concentrations > 5mg. ml-1. The biosorption kinetics followed a pseudo-second-order model and corresponded most closely to the Freundlich isotherm model. The adsorption capacity of live fungal biomass to remove multi-walled carbon nanotubes was 945.17 mg. g-1, indicating that T. versicolor fungi have significant potential for removing carbon nanostructures from the environment.
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Affiliation(s)
- Shaqayeq Asefi
- Department of Microbial Biotechnology, School of Biology, College of Science, University of Tehran, Tehran, Iran
| | - Hamid Moghimi
- Department of Microbial Biotechnology, School of Biology, College of Science, University of Tehran, Tehran, Iran.
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Liu X, Qin H, Xing S, Liu Y, Chu C, Yang D, Duan X, Mao S. Selective Removal of Organic Pollutants in Groundwater and Surface Water by Persulfate-Assisted Advanced Oxidation: The Role of Electron-Donating Capacity. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:13710-13720. [PMID: 37639499 DOI: 10.1021/acs.est.3c04870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
The efficiency of persulfate-assisted advanced oxidation processes (PS-AOPs) in degrading organic pollutants is affected by the electron-donating capability of organic substances present in the water source. In this study, we systematically investigate the electron-donating capacity (EDC) difference between groundwater and surface water and demonstrate the dependence of removal efficiency on the EDC of target water by PS-AOPs with carbon nanotubes (CNTs) as a catalyst. Laboratory analyses and field experiments reveal that the CNT/PS system exhibits higher performance in organic pollutant removal in groundwater with a high concentration of phenols, compared to surface water, which is rich in quinones. We attribute this disparity to the selective electron transfer pathway induced by potential difference between PS-CNT and organic substance-CNT intermediates, which preferentially degrade organic substances with stronger electron-donating capability. This study provides valuable insights into the inherent selective removal mechanism and application scenarios of electron transfer process-dominated PS-AOPs for water treatment based on the electron-donating capacity of organic pollutants.
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Affiliation(s)
- Xinru Liu
- College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai 200092, China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Hehe Qin
- College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai 200092, China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Siyang Xing
- College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai 200092, China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Ying Liu
- College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai 200092, China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Chengcheng Chu
- College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai 200092, China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Dianhai Yang
- College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai 200092, China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Xiaoguang Duan
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Shun Mao
- College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai 200092, China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
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6
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Li X, Zhang J, Jin Y, Liu Y, Li N, Wang Y, Du C, Xue Z, Zhang N, Chen Q. Effect of pH-Dependent Homo/Heteronuclear CAHB on Adsorption and Desorption Behaviors of Ionizable Organic Compounds on Carbonaceous Materials. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:12118. [PMID: 36231423 PMCID: PMC9566536 DOI: 10.3390/ijerph191912118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 09/19/2022] [Accepted: 09/22/2022] [Indexed: 06/16/2023]
Abstract
Herein, the adsorption/desorption behaviors of benzoic acid (BA) and phthalic acid (PA) on three functionalized carbon nanotubes (CNTs) at various pH were investigated, and the charge-assisted H-bond (CAHB) was verified by DFT and FTIR analyses to play a key role. The results indicated that the adsorption order of BA and PA on CNTs was different from Kow of that at pH 2.0, 4.0, and 7.0 caused by the CAHB interaction. The strength of homonuclear CAHB (≥78.96 kJ·mol-1) formed by BA/PA on oxidized CNTs is stronger than that of heteronuclear CAHB formed between BA/PA and amino-functionalized CNTs (≤51.66 kJ·mol-1). Compared with the heteronuclear CAHB (Hysteresis index, HI ≥ 1.47), the stronger homonuclear CAHB leads to clearly desorption hysteresis (HI ≥ 3.51). Additionally, the contribution of homonuclear CAHB (≥52.70%) was also greater than that of heteronuclear CAHB (≤45.79%) at pH 7.0. These conclusions were further confirmed by FTIR and DFT calculation, and the crucial evidence of CAHB formation in FTIR was found. The highlight of this work is the identification of the importance and difference of pH-dependent homonuclear/heteronuclear CAHB on the adsorption and desorption behaviors of ionizable organic compounds on carbonaceous materials, which can provide a deeper understanding for the removal of ionizable organic compounds by designed carbonaceous materials.
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Affiliation(s)
- Xiaoyun Li
- Department of Environmental Science, School of Geography and Tourism, Shaanxi Normal University, Xi’an 710119, China
- International Joint Research Centre of Shaanxi Province for Pollutants Exposure and Eco-Environmental Health, Xi’an 710119, China
| | - Jinlong Zhang
- Department of Environmental Science, School of Geography and Tourism, Shaanxi Normal University, Xi’an 710119, China
| | - Yaofeng Jin
- Department of Environmental Science, School of Geography and Tourism, Shaanxi Normal University, Xi’an 710119, China
| | - Yifan Liu
- Department of Environmental Science, School of Geography and Tourism, Shaanxi Normal University, Xi’an 710119, China
| | - Nana Li
- Department of Environmental Science, School of Geography and Tourism, Shaanxi Normal University, Xi’an 710119, China
| | - Yue Wang
- Department of Environmental Science, School of Geography and Tourism, Shaanxi Normal University, Xi’an 710119, China
| | - Cong Du
- Department of Environmental Science, School of Geography and Tourism, Shaanxi Normal University, Xi’an 710119, China
| | - Zhijing Xue
- Department of Environmental Science, School of Geography and Tourism, Shaanxi Normal University, Xi’an 710119, China
| | - Nan Zhang
- Environmental Protection Department of Mahe Town, Yuyang District, Yulin 719000, China
| | - Qin Chen
- Northwest Land and Resource Research Center, Shaanxi Normal University, Xi’an 710119, China
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Chen Q, Sun T, Fan H, Yan J, Wu Z. Graphene oxide/epoxy composites with enhanced fracture toughness for liquid hydrogen storage. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Qiang Chen
- State Key Laboratory of Technology in Space Cryogenic Propellants Beijing Special Engineering Design and Research Institute Beijing China
| | - Tao Sun
- College of Textile Science and Engineering Jiangnan University Wuxi China
| | - Hongyu Fan
- School of Physics and Materials Engineering Dalian Minzu University Dalian China
| | - Jia Yan
- School of Aeronautics and Astronautics Dalian University of Technology Dalian China
| | - Zhanjun Wu
- School of Aeronautics and Astronautics Dalian University of Technology Dalian China
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8
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Sapna K, Tarique M, Asiamma A, Ravi Kumar TN, Shashidhar V, Arun AB, Prasad KS. Early detection of leptospirosis using Anti-LipL32 carbon nanotube immunofluorescence probe. J Biosci Bioeng 2020; 130:424-430. [PMID: 32674981 DOI: 10.1016/j.jbiosc.2020.06.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 05/11/2020] [Accepted: 06/02/2020] [Indexed: 10/23/2022]
Abstract
Leptospirosis is a widespread zoonosis and an emerging public health problem. Leptospirosis symptoms are often confused or misdiagnosed with other febrile illness like malaria, viral hepatitis, influenza, dengue, typhoid, melioidosis, and scrub typhus as the clinical manifestations are almost similar. Therefore, early and accurate diagnosis of leptospirosis is indeed critical for proper and prompt treatment. Herein, we report the development of single-walled carbon nanotubes based immunofluorescence probe (Carbo-Lip) for the detection of leptospirosis at an early phase by utilising major outer membrane protein, LipL32 of Leptospira. The Carbo-Lip probe was fabricated through immuno recognition method with fluorescent dye functionalized LipL32 monoclonal antibodies (mAbs), secondary antibody and Leptospira. Surface characterization studies such as Fourier transform infrared spectroscopy with the attenuated total reflectance, scanning electron microscopy, transmission electron microscopy, Zeta potential, and X-ray photoelectron spectroscopy techniques were used to demonstrate the successful fabrication of Carbo-Lip probe. The sensor probe was capable of detecting the presence of leptospires at a lower concentration of 103/ml, and could detect 102 leptospires in 100 μL of sample within 3 h of the test conditions, and was stable up to 2 weeks. This Carbo-Lip probe was further tested and validated for its capacity to detect Leptospira in clinical samples, which exhibited high selectivity and specificity towards Leptospira even in the presence of malaria and dengue. Our results were consistent with microscopic agglutination test, which is known as gold standard, immunoglobulin M (IgM) enzyme-linked immunoassay (ELISA), IgM spot test, and culture tests for the diagnosis of Leptospira infection.
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Affiliation(s)
- Kannan Sapna
- Nanomaterial Research Laboratory (NMRL), Nano Division, Yenepoya Research Centre, Yenepoya (Deemed to Be University), Deralakatte, Mangalore 575 018, India; Yenepoya Research Centre, Yenepoya (Deemed to Be University), Deralakatte, Mangalore 575 018, India
| | - Mohammed Tarique
- Yenepoya Research Centre, Yenepoya (Deemed to Be University), Deralakatte, Mangalore 575 018, India
| | - Ashaiba Asiamma
- Yenepoya Research Centre, Yenepoya (Deemed to Be University), Deralakatte, Mangalore 575 018, India
| | - Terikere Nagaraj Ravi Kumar
- Department of Microbiology, Kasturba Medical College, Manipal Academy of Higher Education, Manipal 576 104, India
| | - Vishwanath Shashidhar
- Department of Microbiology, Kasturba Medical College, Manipal Academy of Higher Education, Manipal 576 104, India
| | | | - Kariate Sudhakara Prasad
- Nanomaterial Research Laboratory (NMRL), Nano Division, Yenepoya Research Centre, Yenepoya (Deemed to Be University), Deralakatte, Mangalore 575 018, India; Centre for Nutrition Studies, Yenepoya (Deemed to Be University), Deralakatte, Mangalore 575 018, India.
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9
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Curing Kinetics and the Properties of KH560-SiO2/Polyethersulfone/Bismaleimide-Phenolic Epoxy Resin Composite. J Inorg Organomet Polym Mater 2019. [DOI: 10.1007/s10904-019-01290-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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10
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Najjar A, Sabri S, Al-Gaashani R, Atieh MA, Kochkodan V. Antibiofouling Performance by Polyethersulfone Membranes Cast with Oxidized Multiwalled Carbon Nanotubes and Arabic Gum. MEMBRANES 2019; 9:membranes9020032. [PMID: 30813347 PMCID: PMC6410110 DOI: 10.3390/membranes9020032] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 02/15/2019] [Accepted: 02/17/2019] [Indexed: 12/07/2022]
Abstract
Despite extensive research efforts focusing on tackling membrane biofouling, one of the biggest problems associated with membrane technology, there has been little headway in this area. This study presents novel polyethersulfone (PES) membranes synthesized via a phase inversion method at incremental loadings of functionalized oxidized multiwalled carbon nanotubes (OMWCNT) along with 1 wt. % arabic gum (AG). The synthesized OMWCNT were examined using scanning electron microscopy and transmission electron microscopy for morphological changes compared to the commercially obtained carbon nanotubes. Additionally energy-dispersive X-ray spectroscopy was carried out on the raw and OMWCNT materials, indicating an almost 2-fold increase in oxygen content in the latter sample. The cast PES/OMWCNT membranes were extensively characterized, and underwent a series of performance testing using bovine serum albumin solution for fouling tests and model Gram-positive (Bacillus subtilis) and Gram-negative (Escherichia coli) bacterial species for anti-biofouling experiments. Results indicated that the composite PES membranes, which incorporated the OMWCNT and AG, possessed significantly stronger hydrophilicity and negative surface charge as evidenced by water contact angle and zeta potential data, respectively, when compared to plain PES membranes. Furthermore atomic force microscopy analysis showed that the PES/OMWCNT membranes exhibited significantly lower surface roughness values. Together, these membrane surface features were held responsible for the anti-adhesive nature of the hybrid membranes seen during biofouling tests. Importantly, the prepared membranes were able to inhibit bacterial colonization upon incubation with both Gram-positive and Gram-negative bacterial suspensions. The PES/OMWCNT membranes also presented more resilient normalized flux values when compared to neat PES and commercial membrane samples during filtration of both bacterial suspensions and real treated sewage effluents. Taken together, the results of this study allude to OMWCNT and AG as promising additives, for incorporation into polymeric membranes to enhance biofouling resistance.
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Affiliation(s)
- Ahmad Najjar
- College of Life and Health Sciences, Hamad Bin Khalifa University (HBKU), P.O. Box 34110 Doha, Qatar.
| | - Souhir Sabri
- Qatar Environment and Energy Research Institute (QEERI), Hamad Bin Khalifa University (HBKU), P.O. Box 34110 Doha, Qatar.
| | - Rashad Al-Gaashani
- Qatar Environment and Energy Research Institute (QEERI), Hamad Bin Khalifa University (HBKU), P.O. Box 34110 Doha, Qatar.
| | - Muataz Ali Atieh
- Qatar Environment and Energy Research Institute (QEERI), Hamad Bin Khalifa University (HBKU), P.O. Box 34110 Doha, Qatar.
| | - Viktor Kochkodan
- Qatar Environment and Energy Research Institute (QEERI), Hamad Bin Khalifa University (HBKU), P.O. Box 34110 Doha, Qatar.
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11
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Beneš H, Popelková D, Šturcová A, Popelka Š, Jůza J, Pop-Georgievski O, Konefał M, Hrubý M. Aqueous-Based Functionalizations of Titanate Nanotubes: A Straightforward Route to High-Performance Epoxy Composites with Interfacially Bonded Nanofillers. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01204] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Hynek Beneš
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic
| | - Daniela Popelková
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic
| | - Adriana Šturcová
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic
| | - Štěpán Popelka
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic
| | - Josef Jůza
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic
| | - Ognen Pop-Georgievski
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic
| | - Magdalena Konefał
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic
| | - Martin Hrubý
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic
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12
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Goyat MS, Jaglan V, Tomar V, Louchaert G, Kumar A, Kumar K, Singla A, Gupta R, Bhan U, Rai SK, Sharma S. Superior thermomechanical and wetting properties of ultrasonic dual mode mixing assisted epoxy-CNT nanocomposites. HIGH PERFORM POLYM 2017. [DOI: 10.1177/0954008317749021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
High-performance epoxy-carbon nanotube (CNT) nanocomposites were prepared by simultaneous use of ultrasonication and mechanical stirring. The dynamic and static mechanical properties and wetting properties of the nanocomposites were investigated. The dynamic mechanical analysis presented significant enhancement in storage modulus (approximately 124%) and glass transition temperature (approximately 25.6%) of epoxy-CNT nanocomposite at an optimized concentration of the CNT (0.25 wt%) possibly due to the formation of a strong interface between the epoxy and CNT. The tensile test results showed the significant improvement in tensile strength (approximately 47%) and Young’s modulus (approximately 40%) of the epoxy-CNT (0.25 wt%) nanocomposite without significantly affecting its stiffness. The homogeneous dispersion of CNTs in the epoxy matrix resulted in the significant enhancement in the dynamic and static mechanical properties of the nanocomposites. The hydrophilic character of the neat epoxy was tuned to a highly hydrophobic one by incorporation of CNTs in it. A direct relation between the average roughness of the tensile fracture surfaces and the contact angle of the nanocomposites was identified with respect to the concentration of the CNTs. These high-performance highly hydrophobic nanocomposites have the great potential to be used as the structural and functional materials in humid environments.
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Affiliation(s)
- MS Goyat
- Department of Physics, School of Engineering, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
| | - Vikram Jaglan
- Department of Mechanical Engineering, School of Engineering, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
| | - Vikram Tomar
- Department of Mechanical Engineering, School of Engineering, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
| | | | - Arun Kumar
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, India
| | - Kaushal Kumar
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, India
| | - Amneesh Singla
- Department of Mechanical Engineering, School of Engineering, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
| | - Rajeev Gupta
- Department of Physics, School of Engineering, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
| | - Uday Bhan
- Department of Petroleum Engineering and Earth Sciences, School of Engineering, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
| | - Santosh Kumar Rai
- Petrology and Geochemistry, Wadia Institute of Himalayan Geology, Dehradun, Uttarakhand, India
| | - Sudesh Sharma
- Department of Physics, School of Engineering, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
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13
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Wang C, Xu J, Yang J, Qian Y, Liu H. In-situ polymerization and multifunctional properties of surface-modified multiwalled carbon nanotube-reinforced polyimide nanocomposites. HIGH PERFORM POLYM 2017. [DOI: 10.1177/0954008316657862] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this study, strong multiwalled carbon nanotube (MWNT)–polyimide (PI) matrix interfaces were designed and constructed to obtain high-performance nanocomposites via in-situ polymerization. MWNTs with reactive amino groups were produced by the covalent linking of phenylenediamine to the surface of MWNTs by amide bonds; this material exhibited excellent dispersibility and compatibility with the PI matrix. The incorporation of amine-functionalized MWNT (MWNT-NH2) significantly improved the macroscopic properties of the PI-based nanocomposites. A 50.5% increase in the tensile strength and an 83.1% increase in the Young’s modulus were achieved by 3.0 wt% MWNT-NH2 loading. Furthermore, the storage modulus, thermal stability, and glass transition temperature of the nanocomposite clearly increased by adding MWNT-NH2. The success of this method provides a good rational for developing high-performance polymer-based nanocomposites.
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Affiliation(s)
- Chunyan Wang
- Department of Materials Science and Engineering, Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, East China University of Technology, Nanchang, Jiangxi, China
| | - Jianping Xu
- Department of Materials Science and Engineering, Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, East China University of Technology, Nanchang, Jiangxi, China
| | - Junxin Yang
- Department of Materials Science and Engineering, Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, East China University of Technology, Nanchang, Jiangxi, China
| | - Yong Qian
- Department of Materials Science and Engineering, Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, East China University of Technology, Nanchang, Jiangxi, China
| | - Hesheng Liu
- Department of Materials Science and Engineering, Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, East China University of Technology, Nanchang, Jiangxi, China
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14
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Zhu K, Wang G. Fabrication of high-performance ultrafiltration membranes using zwitterionic carbon nanotubes and polyethersulfone. HIGH PERFORM POLYM 2017. [DOI: 10.1177/0954008317711234] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Kai Zhu
- Key Laboratory of High Performance Plastics, Ministry of Education, College of Chemistry, Jilin University, Changchun, People’s Republic of China
| | - Guibin Wang
- Key Laboratory of High Performance Plastics, Ministry of Education, College of Chemistry, Jilin University, Changchun, People’s Republic of China
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15
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Wu Y, Gu Z, Chen M, Zhu C, Liao H. Effect of functionalization of multi-walled carbon nanotube on mechanical and viscoelastic properties of polysulfide-modified epoxy nanocomposites. HIGH PERFORM POLYM 2016. [DOI: 10.1177/0954008316632290] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In order to obtain epoxy compounds with excellent mechanical properties without compromising other desired properties, pristine- or carboxyl-functionalized multi-walled carbon nanotube (p-MWCNT or f-MWCNT) along with polysulfide were incorporated into an amine-cured epoxy resin. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy analyses proved the existence of carboxyl groups on the surface of f-MWCNT. Adding 0.1 wt% f-MWCNT significantly improved the tensile strength and impact strength of the epoxy nanocomposites by 104% and 47%, respectively. However, adding p-MWCNT had little effect on the mechanical properties of the nanocomposites. The glass transition temperature of the f-MWCNT/epoxy nanocomposites were also much higher than neat epoxy matrix and p-MWCNT/epoxy nanocomposites. The fracture surface morphology and dynamic mechanical analysis results indicated that the interfacial interactions between f-MWCNT and the epoxy matrix were much stronger than that of p-MWCNT, which ensured the much-improved mechanical properties.
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Affiliation(s)
- Yeping Wu
- Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, Sichuan, China
| | - Zhongyun Gu
- Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, Sichuan, China
| | - Maobin Chen
- Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, Sichuan, China
| | - Chunhua Zhu
- Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, Sichuan, China
| | - Hong Liao
- Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, Sichuan, China
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16
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Li S, Lin Q, Zhu H, Hou H, Li Y, Wu Q, Cui C. Improved mechanical properties of epoxy-based composites with hyperbranched polymer grafting glass-fiber. POLYM ADVAN TECHNOL 2016. [DOI: 10.1002/pat.3746] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Shuiping Li
- School of Materials Engineering; Yancheng Institute of Technology; Yancheng Jiangsu 224051 China
- College of Materials Science and Engineering; Nanjing University of Science and Technology; Nanjing Jiangsu 210094 China
| | - Qin Lin
- College of Materials Engineering; Jinling Institute of Technology; Nanjing Jiangsu 211169 China
| | - Huajun Zhu
- School of Materials Engineering; Yancheng Institute of Technology; Yancheng Jiangsu 224051 China
| | - Haijun Hou
- School of Materials Engineering; Yancheng Institute of Technology; Yancheng Jiangsu 224051 China
| | - Yanbo Li
- School of Materials Engineering; Yancheng Institute of Technology; Yancheng Jiangsu 224051 China
| | - Qisheng Wu
- School of Materials Engineering; Yancheng Institute of Technology; Yancheng Jiangsu 224051 China
| | - Chong Cui
- College of Materials Science and Engineering; Nanjing University of Science and Technology; Nanjing Jiangsu 210094 China
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17
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García C, Fittipaldi M, Grace LR. Epoxy/montmorillonite nanocomposites for improving aircraft radome longevity. J Appl Polym Sci 2015. [DOI: 10.1002/app.42691] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Carla García
- Mechanical & Aerospace Engineering Department; University of Miami; Coral Gables Florida 33146
| | - Mauro Fittipaldi
- Mechanical & Aerospace Engineering Department; University of Miami; Coral Gables Florida 33146
| | - Landon R. Grace
- Mechanical & Aerospace Engineering Department; University of Miami; Coral Gables Florida 33146
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