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Seelajaroen H, Mayr F, Wielend D, Cobet M, Ulbricht C, Serdar Sariciftci N, Tekoglu S. Sustainable One-Pot Electrochemical Approach for Entrapment of Multi-Enzymes and Biocompatible Redox Mediator. Chempluschem 2025; 90:e202400577. [PMID: 39918853 DOI: 10.1002/cplu.202400577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2024] [Revised: 02/04/2025] [Accepted: 02/05/2025] [Indexed: 02/22/2025]
Abstract
Enzyme immobilization is regarded as a key factor for their effective utilization in various fields such as biofuel production, wastewater treatment, and biosensors. Designing new electrodes with biocompatible support matrices is essential to improve the stability in bioelectrocatalysis. Modified carbon felt electrodes were prepared and tested as bioelectrocatalyst under mild conditions - aqueous media at room temperature and basically neutral pH. Co-immobilization of dehydrogenase enzymes and neutral red (NR) dye at carbon felt electrodes was successfully achieved during electropolymerization of pyrrole in a facile one-step approach. Neutral red was incorporated to operate as a redox mediator supporting efficient electron transfer to the enzymes' active sites. Electrodes modified with alcohol dehydrogenase (ADH) have been employed to reduce acetaldehyde to ethanol in a chronoamperometic setting with Faradaic efficiency (FE) of up to 33 %. By incorporating the cascade reaction with three enzymes - ADH, formate dehydrogenase, and formaldehyde dehydrogenase - an electroreduction sequence could be established to produce methanol from CO2 reaching a FE of 10 %. The proposed approach shows good stability. Together with the simple implementation and application, this process is promising for employment in enzymatic electrocatalysis.
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Affiliation(s)
- Hathaichanok Seelajaroen
- Linz Institute for Organic Solar Cells (LIOS), Institute of Physical Chemistry, Johannes Kepler University Linz, Altenberger Str 69, A-4040, Linz, Austria
| | - Felix Mayr
- Linz Institute for Organic Solar Cells (LIOS), Institute of Physical Chemistry, Johannes Kepler University Linz, Altenberger Str 69, A-4040, Linz, Austria
| | - Dominik Wielend
- Linz Institute for Organic Solar Cells (LIOS), Institute of Physical Chemistry, Johannes Kepler University Linz, Altenberger Str 69, A-4040, Linz, Austria
| | - Munise Cobet
- Linz Institute for Organic Solar Cells (LIOS), Institute of Physical Chemistry, Johannes Kepler University Linz, Altenberger Str 69, A-4040, Linz, Austria
| | - Christoph Ulbricht
- Linz Institute for Organic Solar Cells (LIOS), Institute of Physical Chemistry, Johannes Kepler University Linz, Altenberger Str 69, A-4040, Linz, Austria
| | - Niyazi Serdar Sariciftci
- Linz Institute for Organic Solar Cells (LIOS), Institute of Physical Chemistry, Johannes Kepler University Linz, Altenberger Str 69, A-4040, Linz, Austria
| | - Serpil Tekoglu
- Linz Institute for Organic Solar Cells (LIOS), Institute of Physical Chemistry, Johannes Kepler University Linz, Altenberger Str 69, A-4040, Linz, Austria
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Jafari Zadegan MS, Moosaei R, Choopani L, Salehi MM, Maleki A, Zare EN. Remediation of Safranin-O and Acid Fuchsin by Using Ti 3C 2 MXene /rGo-Cu 2O Nanocomposite: Preparation, Characterization, Isotherm, Kinetics and Thermodynamic Studies. ENVIRONMENTAL RESEARCH 2024; 258:119469. [PMID: 38936496 DOI: 10.1016/j.envres.2024.119469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Revised: 06/03/2024] [Accepted: 06/19/2024] [Indexed: 06/29/2024]
Abstract
In recent years, MXene has become one of the most intriguing two-dimensional layered (2Dl) materials extensively explored for various applications. In this study, a Ti3C2 MXene/rGo-Cu2O Nanocomposite (TGCNCs) was developed to eliminate Safranin-O effectively (SO) and Acid Fuchsin (AF) as cationic dyes from the aquatic environment. Multistep was involved in the preparation of the adsorbent system, including the Preparation of Ti3C2, after that, GO synthesis by the Humer method, followed by rGO production, then added CuSO4 to obtain a final Nanocomposite (NCs) called "TGCNCs". The structure of TGCNCs can be varied in several ways, including FTIR, SEM, TGA, Zeta, EDX, XRD, and BET, to affirm the efficacious preparation of TGCNCs. A novel adsorbent system was developed to remove SO and AF, both cationic dyes. Various adsorption conditions have been optimized through batch adsorption tests, including the pH of the solution (4-12), the effect of dosage (0.003-0.03 g), the impact of the contact time (5-30 min), and the effect of beginning dye concentration (25-250 mg/L). Accordingly, the TGCNCs exhibited excellent fitting for Freundlich isotherm mode, resulting in maximum AF and SO adsorption capacities of 909.09 and 769.23 mg.g-1. This research on adsorption kinetics suggests that a pseudo-second-order (PSO) model would fit well with the experimental data ( = 0.998 and = 0.990). It is evident from the thermodynamic parameters that adsorption is an endothermic process that is spontaneous and favourable. During the adsorption of SO and AF onto NCs, it is hypothesized that these molecules interact intramolecularly through stacking interactions, H-bond interactions, electrostatic interactions, and entrapment within the polymeric Poros structure nanocomposite. Regeneration studies lasting up to five cycles were the most effective for both organic dyes under study.
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Affiliation(s)
| | - Roya Moosaei
- Department of Nano-Chemical Engineering, Faculty of Advanced Technologies, Shiraz University, Shiraz, Iran
| | - Leila Choopani
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran
| | - Mohammad Mehdi Salehi
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran
| | - Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran.
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Tumacder DV, Minisy IM, Taboubi O, Bober P. Highly Electroactive Frozen-State Polymerized Polypyrrole Nanostructures for Flexible Supercapacitors. Polymers (Basel) 2023; 15:4140. [PMID: 37896384 PMCID: PMC10610487 DOI: 10.3390/polym15204140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/14/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
The polymerization of pyrrole in the frozen state with the presence of organic dyes (methyl orange (MO) and Acid Blue 25 (AB)) has proven to produce polypyrrole (PPy) nanostructures. Herein, we explore the electrochemical properties of PPy prepared under frozen-state conditions (-24 °C) with and without the presence of organic dyes. The electroactivity of PPy prepared with MO and AB significantly increased in all electrolytic media with a capacitance higher than this of the PPy prepared at room temperature. The highest capacitance (1914 F g-1) was obtained for PPy-MO in 0.2 M HCl solution. The impedance spectra of PPy showed a decrease in charge transfer resistance when the dyes were present. This indicates a conductivity increase of PPy. Improved electrochemical stability was observed for PPy, PPy-MO, and PPy-AB prepared at -24 °C, wherein a steady gain of capacitance was maintained during 5000 potential cycling. In addition, a PPy-based supercapacitor device was fabricated to demonstrate the energy storage characteristics of PPy, where it showed good capacitive behavior and stability. Overall, frozen-state polymerized PPy posed an impressive capacitive performance for flexible supercapacitors.
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Affiliation(s)
- Doebner Von Tumacder
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, 162 00 Prague, Czech Republic; (D.V.T.); (I.M.M.); (O.T.)
- Faculty of Science, Charles University, 128 43 Prague, Czech Republic
| | - Islam M. Minisy
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, 162 00 Prague, Czech Republic; (D.V.T.); (I.M.M.); (O.T.)
| | - Oumayma Taboubi
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, 162 00 Prague, Czech Republic; (D.V.T.); (I.M.M.); (O.T.)
| | - Patrycja Bober
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, 162 00 Prague, Czech Republic; (D.V.T.); (I.M.M.); (O.T.)
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Seike M, Uda M, Suzuki T, Minami H, Higashimoto S, Hirai T, Nakamura Y, Fujii S. Synthesis of Polypyrrole and Its Derivatives as a Liquid Marble Stabilizer via a Solvent-Free Chemical Oxidative Polymerization Protocol. ACS OMEGA 2022; 7:13010-13021. [PMID: 35474829 PMCID: PMC9026107 DOI: 10.1021/acsomega.2c00327] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 03/02/2022] [Indexed: 05/25/2023]
Abstract
Solvent-free chemical oxidative polymerizations of pyrrole and its derivatives, namely N-methylpyrrole and N-ethylpyrrole, were conducted by mechanical mixing of monomer and solid FeCl3 oxidant under nitrogen atmosphere. Polymerizations occurred at the surface of the oxidant, and optical and scanning electron microscopy studies confirmed production of atypical grains with diameters of a few tens of micrometers. Fourier transform infrared spectroscopy studies indicated the presence of hydroxy and carbonyl groups which were introduced during the polymerization due to overoxidation. The polymer grains were doped with chloride ions, and the chloride ion dopant could be removed by dedoping using an aqueous solution of sodium hydroxide, which was confirmed by elemental microanalysis and X-ray photoelectron spectroscopy studies. Water contact angle measurements confirmed that the larger the alkyl group on the nitrogen of pyrrole ring the higher the hydrophobicity and that the contact angles increased after dedoping in all cases. The grains before and after dedoping exhibited photothermal properties: the near-infrared laser irradiation induced a rapid temperature increase to greater than 430 °C. Furthermore, dedoped poly(N-ethylpyrrole) grains adsorbed to the air-water interface and could work as an effective liquid marble stabilizer. The resulting liquid marble could move on a planar water surface due to near-infrared laser-induced Marangoni flow and could disintegrate by exposure to acid vapor via redoping of the poly(N-ethylpyrrole) grains.
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Affiliation(s)
- Musashi Seike
- Division
of Applied Chemistry, Environmental and Biomedical Engineering, Graduate
School of Engineering, Osaka Institute of
Technology, 5-16-1 Omiya, Asahi-ku, Osaka 535-8585, Japan
| | - Makoto Uda
- Division
of Applied Chemistry, Environmental and Biomedical Engineering, Graduate
School of Engineering, Osaka Institute of
Technology, 5-16-1 Omiya, Asahi-ku, Osaka 535-8585, Japan
| | - Toyoko Suzuki
- Department
of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Rokko, Nada, Kobe 657-8501, Japan
| | - Hideto Minami
- Department
of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Rokko, Nada, Kobe 657-8501, Japan
| | - Shinya Higashimoto
- Department
of Applied Chemistry, Faculty of Engineering,
Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka 535-8585, Japan
| | - Tomoyasu Hirai
- Department
of Applied Chemistry, Faculty of Engineering,
Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka 535-8585, Japan
- Nanomaterials
Microdevices Research Center, Osaka Institute
of Technology, 5-16-1
Omiya, Asahi-ku, Osaka 535-8585, Japan
| | - Yoshinobu Nakamura
- Department
of Applied Chemistry, Faculty of Engineering,
Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka 535-8585, Japan
- Nanomaterials
Microdevices Research Center, Osaka Institute
of Technology, 5-16-1
Omiya, Asahi-ku, Osaka 535-8585, Japan
| | - Syuji Fujii
- Department
of Applied Chemistry, Faculty of Engineering,
Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka 535-8585, Japan
- Nanomaterials
Microdevices Research Center, Osaka Institute
of Technology, 5-16-1
Omiya, Asahi-ku, Osaka 535-8585, Japan
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