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Review of advances in improving thermal, mechanical and electrochemical properties of polyaniline composite for supercapacitor application. Polym Bull (Berl) 2023. [DOI: 10.1007/s00289-023-04710-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
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Aziz K, Aziz F, Mamouni R, Aziz L, Saffaj N. Engineering of highly Brachychiton populneus shells@polyaniline bio-sorbent for efficient removal of pesticides from wastewater: Optimization using BBD-RSM approach. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117092] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Attia AAM, Abas KM, Ahmed Nada AA, Shouman MAH, Šišková AO, Mosnáček J. Fabrication, Modification, and Characterization of Lignin-Based Electrospun Fibers Derived from Distinctive Biomass Sources. Polymers (Basel) 2021; 13:2277. [PMID: 34301035 PMCID: PMC8309332 DOI: 10.3390/polym13142277] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/06/2021] [Accepted: 07/09/2021] [Indexed: 11/16/2022] Open
Abstract
From the environmental point of view, there is high demand for the preparation of polymeric materials for various applications from renewable and/or waste sources. New lignin-based spun fibers were produced, characterized, and probed for use in methylene blue (MB) dye removal in this study. The lignin was extracted from palm fronds (PF) and banana bunch (BB) feedstock using catalytic organosolv treatment. Different polymer concentrations of either a plasticized blend of renewable polymers such as polylactic acid/polyhydroxybutyrate blend (PLA-PHB-ATBC) or polyethylene terephthalate (PET) as a potential waste material were used as matrices to generate lignin-based fibers by the electrospinning technique. The samples with the best fiber morphologies were further modified after iodine handling to ameliorate and expedite the thermostabilization process. To investigate the adsorption of MB dye from aqueous solution, two approaches of fiber modification were utilized. First, electrospun fibers were carbonized at 500 °C with aim of generating lignin-based carbon fibers with a smooth appearance. The second method used an in situ oxidative chemical polymerization of m-toluidine monomer to modify electrospun fibers, which were then nominated by hybrid composites. SEM, TGA, FT-IR, BET, elemental analysis, and tensile measurements were employed to evaluate the composition, morphology, and characteristics of manufactured fibers. The hybrid composite formed from an OBBL/PET fiber mat has been shown to be a promising adsorbent material with a capacity of 9 mg/g for MB dye removal.
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Affiliation(s)
- Amina Abdel Meguid Attia
- Laboratory of Surface Chemistry and Catalysis, National Research Center, 33 El-Bohouth St., Giza 12622, Egypt; (K.M.A.); (M.A.H.S.)
| | - Khadiga Mohamed Abas
- Laboratory of Surface Chemistry and Catalysis, National Research Center, 33 El-Bohouth St., Giza 12622, Egypt; (K.M.A.); (M.A.H.S.)
| | - Ahmed Ali Ahmed Nada
- Pretreatment and Finishing of Cellulose Based Textiles Department, National Research Center, Giza 12622, Egypt;
- Centre for Advanced Materials Application, Slovak Academy of Sciences, Dubravska Cesta 9, 845 11 Bratislava, Slovakia
| | - Mona Abdel Hamid Shouman
- Laboratory of Surface Chemistry and Catalysis, National Research Center, 33 El-Bohouth St., Giza 12622, Egypt; (K.M.A.); (M.A.H.S.)
| | - Alena Opálková Šišková
- Polymer Institute, Slovak Academy of Sciences, Dubravska Cesta 9, 845 41 Bratislava, Slovakia;
| | - Jaroslav Mosnáček
- Centre for Advanced Materials Application, Slovak Academy of Sciences, Dubravska Cesta 9, 845 11 Bratislava, Slovakia
- Polymer Institute, Slovak Academy of Sciences, Dubravska Cesta 9, 845 41 Bratislava, Slovakia;
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Abstract
Nowadays, we are assisting in the exceptional growth in research relating to the development of wearable devices for sweat analysis. Sweat is a biofluid that contains useful health information and allows a non-invasive, continuous and comfortable collection. For this reason, it is an excellent biofluid for the detection of different analytes. In this work, electrochemical sensors based on polyaniline thin films deposited on the flexible substrate polyethylene terephthalate coated with indium tin oxide were studied. Polyaniline thin films were abstained by the potentiostatic deposition technique, applying a potential of +2 V vs. SCE for 90 s. To improve the sensor performance, the electronic substrate was modified with reduced graphene oxide, obtained at a constant potential of −0.8 V vs. SCE for 200 s, and then polyaniline thin films were electrodeposited on top of the as-deposited substrate. All samples were characterized by XRD, SEM, EDS, static contact angle and FT-IR/ATR analysis to correlate the physical-chemical features with the performance of the sensors. The obtained electrodes were tested as pH sensors in the range from 2 to 8, showing good behavior, with a sensitivity of 62.3 mV/pH, very close to a Nernstian response, and a reproducibility of 3.8%. Interference tests, in the presence of competing ions, aimed to verify the selectivity, were also performed. Finally, a real sweat sample was collected, and the sweat pH was quantified with both the proposed sensor and a commercial pH meter, showing an excellent concordance.
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Sokolov AV, Limareva LV, Iliasov PV, Gribkova OV, Sustretov AS. Methods of Encapsulation of Biomacromolecules and Living Cells. Prospects of Using Metal–Organic Frameworks. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2021. [PMCID: PMC8141827 DOI: 10.1134/s1070428021040011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The review discusses different methods of encapsulation and biomineralization of macromolecules and living cells. Main advantages and disadvantages of most commonly used carriers, matrices, and materials for immobilization of proteins, enzymes, nucleic acids, and living cells are briefly surveyed. Examples of delivery vehicles for multifunctional encapsulation of protein-like substances are presented. Particular attention is paid to prospects of using metal–organic frameworks in medicine and biotechnology.
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Affiliation(s)
- A. V. Sokolov
- Institute of Experimental Medicine and Biotechnologies, Samara State Medical University, Ministry of Health of the Russian Federation, 443099 Samara, Russia
| | - L. V. Limareva
- Institute of Experimental Medicine and Biotechnologies, Samara State Medical University, Ministry of Health of the Russian Federation, 443099 Samara, Russia
| | - P. V. Iliasov
- Institute of Experimental Medicine and Biotechnologies, Samara State Medical University, Ministry of Health of the Russian Federation, 443099 Samara, Russia
| | - O. V. Gribkova
- Institute of Experimental Medicine and Biotechnologies, Samara State Medical University, Ministry of Health of the Russian Federation, 443099 Samara, Russia
| | - A. S. Sustretov
- Institute of Experimental Medicine and Biotechnologies, Samara State Medical University, Ministry of Health of the Russian Federation, 443099 Samara, Russia
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Salar-Garcia M, Montilla F, Quijada C, Morallon E, Ieropoulos I. Improving the power performance of urine-fed microbial fuel cells using PEDOT-PSS modified anodes. APPLIED ENERGY 2020; 278:115528. [PMID: 33311834 PMCID: PMC7722509 DOI: 10.1016/j.apenergy.2020.115528] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/25/2020] [Accepted: 07/15/2020] [Indexed: 05/04/2023]
Abstract
The need for improving the energy harvesting from Microbial Fuel Cells (MFCs) has boosted the design of new materials in order to increase the power performance of this technology and facilitate its practical application. According to this approach, in this work different poly(3,4-ethylenedioxythiophene)-polystyrenesulfonate (PEDOT-PSS) modified electrodes have been synthesised and evaluated as anodes in urine-fed MFCs. The electrochemical synthesis of PEDOT-PSS was performed by potentiostatic step experiments from aqueous solution at a fixed potential of 1.80 V (vs. a reversible hydrogen electrode) for different times: 30, 60, 120 and 240 s. Compared with other methods, this technique allowed us not only to reduce the processing time of the electrodes but also better control of the chemical composition of the deposited polymer and therefore, obtain more efficient polymer films. All modified anodes outperformed the maximum power output by MFCs working with the bare carbon veil electrode but the maximum value was observed when MFCs were working with the PEDOT-PSS based anode obtained after 30 s of electropolymerisation (535.1 µW). This value was 24.3% higher than using the bare carbon veil electrode. Moreover, the functionality of the PEDOT-PSS anodes was reported over 90 days working in continuous mode.
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Affiliation(s)
- M.J. Salar-Garcia
- Bristol BioEnergy Centre, Bristol Robotics Laboratory, University of the West of England, Coldharbour Lane, BS16 1QY Bristol, United Kingdom
| | - F. Montilla
- Departamento de Química Física e Instituto Universitario de Materiales, Universidad de Alicante, Crtra. San Vicente s/n 03690, E-03080 Alicante, Spain
| | - C. Quijada
- Departamento de Ingeniería Textil y Papelera, Universitat Politècnica de València, Pza Ferrandiz y Carbonell, E-03801 Alcoy, Alicante, Spain
| | - E. Morallon
- Departamento de Química Física e Instituto Universitario de Materiales, Universidad de Alicante, Crtra. San Vicente s/n 03690, E-03080 Alicante, Spain
| | - I. Ieropoulos
- Bristol BioEnergy Centre, Bristol Robotics Laboratory, University of the West of England, Coldharbour Lane, BS16 1QY Bristol, United Kingdom
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Special Issue: Conductive Polymers: Materials and Applications. MATERIALS 2020; 13:ma13102344. [PMID: 32443686 PMCID: PMC7287700 DOI: 10.3390/ma13102344] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 05/18/2020] [Indexed: 01/24/2023]
Abstract
Intrinsically conductive polymers (CPs) combine the inherent mechanical properties of organic polymers with charge transport, opto-electronic and redox properties that can be easily tuned up to those typical of semiconductors and metals. The control of the morphology at the nanoscale and the design of CP-based composite materials have expanded their multifunctional character even further. These virtues have been exploited to advantage in opto-electronic devices, energy-conversion and storage systems, sensors and actuators, and more recently in applications related to biomedical and separation science or adsorbents for pollutant removal. The special issue “Conductive Polymers: Materials and Applications” was compiled by gathering contributions that cover the latest advances in the field, with special emphasis upon emerging applications.
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