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Usmanova GS, Latypova LR, Mustafin AG. Removal of Anionic Methyl Orange Dye from Water by Poly[2-methyl-1 H-indole] Derivatives: Investigation of Kinetics and Isotherms of Adsorption. J Phys Chem B 2024; 128:4195-4207. [PMID: 38634441 DOI: 10.1021/acs.jpcb.3c07921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
The adsorption properties toward methyl orange (MO) were evaluated for poly[2-methyl-1H-indole] and its derivatives. The influence of pH, ionic strength of solution, composition, and amount of sorbent on the adsorption of MO dye was investigated; the kinetics of dye adsorption was studied. The adsorption isotherms were analyzed using different models of sorption equilibrium. The presence of chemical interaction between polyindoles and dye was proved by IR and UV spectroscopy methods. The sorption of MO with polymers is realized mainly due to the formation of electrostatic interactions between the sulfogroup of the dye and the imino group of the sorbent. Microphotographs demonstrate the change in the morphology of polyindoles after adsorption, which further confirms the structural changes in the polymers. It was found that the main factors affecting the sorption capacity of the studied materials are the position and nature of substituents in the polymers and the sorption conditions. For example, polyindoles containing a methoxy group in their structure (o-OMePIn and m-OMePIn) have the best sorption activity. These polymers are effective in adsorbing dyes, which means that they can be used in wastewater treatment.
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Affiliation(s)
- Gulsum S Usmanova
- Laboratory of Organic Functional Materials, Ufa Institute of Chemistry of the Russian Academy of Sciences, Ufa 450054, Russia
| | - Lyaysan R Latypova
- Laboratory of Organic Functional Materials, Ufa Institute of Chemistry of the Russian Academy of Sciences, Ufa 450054, Russia
| | - Akhat G Mustafin
- Laboratory of Organic Functional Materials, Ufa Institute of Chemistry of the Russian Academy of Sciences, Ufa 450054, Russia
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Dewa L, Tichapondwa SM, Mhike W. Adsorption of hexavalent chromium from wastewater using polyaniline-coated microcrystalline cellulose nanocomposites. RSC Adv 2024; 14:6603-6616. [PMID: 38390514 PMCID: PMC10882266 DOI: 10.1039/d3ra08027g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 02/16/2024] [Indexed: 02/24/2024] Open
Abstract
In this study, the effectiveness of microcrystalline cellulose (MCC) as an adsorbent for the removal of hexavalent chromium, Cr(vi), from synthetic wastewater was enhanced through functionalization with polyaniline (PANI). Scanning electron microscopy (SEM) showed that MCC was an effective scaffold for in situ chemical oxidative polymerization of aniline. Fourier transform infrared spectroscopy (FTIR) spectroscopy and X-ray diffraction confirmed successful PANI synthesis. The MCC/PANI nanocomposites exhibited relatively high specific surface areas, compared to that of the MCC (2.05 m2 g-1). Batch adsorption studies showed that the optimal conditions for the removal of Cr(vi) from wastewater using the MCC/PANI-69 wt% nanocomposite were an initial Cr(vi) concentration of 100 mg L-1, an adsorbent dosage of 4 g L-1 and a Cr(vi) solution pH of 7. The MCC/PANI-69 wt% required only 30 min to reach equilibrium and the equilibrium removal efficiency was 95%. FTIR spectroscopy and energy dispersive X-ray spectrometry results suggest that the Cr(vi) removal mechanism by the MCC/PANI-69 wt% nanocomposite at pH 7 was through electrostatic attraction of Cr(vi) species by PANI, reduction of Cr(vi) into Cr(iii) and precipitation of Cr(iii) on the nanocomposite surface. The kinetics for the removal of the Cr(vi) by the MCC/PANI-69 wt% nanocomposite were adequately described by the pseudo second order (PSO) kinetics model, whereas the Langmuir isotherm adequately described the equilibrium data. The MCC/PANI-69 wt% nanocomposite had a significantly improved maximum adsorption capacity of 35.97 mg g-1, at pH 7, in comparison to that of the MCC (3.92 mg g-1 at pH 1). The study demonstrated that, whereas most of the reported adsorbents for Cr(vi) are only effective at low pH values, the MCC/PANI nanocomposite synthesized in this study was effective at pH 7.
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Affiliation(s)
- Lovejoy Dewa
- Polymer Technology Division, Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology Pretoria 0001 South Africa +27 12 382 5460
| | - Shepherd Masimba Tichapondwa
- Water Utilization Division, Department of Chemical Engineering, University of Pretoria Pretoria 0001 South Africa
| | - Washington Mhike
- Polymer Technology Division, Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology Pretoria 0001 South Africa +27 12 382 5460
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Al-Ithawi WKA, Aluru R, Baklykov AV, Khasanov AF, Kovalev IS, Nikonov IL, Kopchuk DS, Novikov AS, Santra S, Zyryanov GV, Ranu BC. Mechanosynthesis of Polyureas and Studies of Their Responses to Anions. Polymers (Basel) 2023; 15:4160. [PMID: 37896404 PMCID: PMC10611254 DOI: 10.3390/polym15204160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 08/31/2023] [Accepted: 09/05/2023] [Indexed: 10/29/2023] Open
Abstract
Polyureas (PUs) have already found wide practical applications, and various methods of their synthesis have been reported. In this manuscript, we wished to report the very first mechanochemical approach towards aromatic PUs via reactions between isomeric 2,2'-, 3,3'-, and 4,4'-diaminobiphenyls and triphosgene under solvent-free conditions following ball-milling. By using this synthetic approach, both PUs and azomethine-capped Pus were obtained. The fluorescence response of the above-mentioned PUs towards various anions in solutions were studied and selective fluorescence responses towards the hydroxyl and fluoride anions were observed.
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Affiliation(s)
- Wahab K. A. Al-Ithawi
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., Yekaterinburg 620002, Russia; (W.K.A.A.-I.); (R.A.); (A.F.K.); (I.S.K.); (I.L.N.); (D.S.K.); (S.S.); (B.C.R.)
- Energy and Renewable Energies Technology Center, University of Technology-Iraq, Baghdad 10066, Iraq
| | - Rammohan Aluru
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., Yekaterinburg 620002, Russia; (W.K.A.A.-I.); (R.A.); (A.F.K.); (I.S.K.); (I.L.N.); (D.S.K.); (S.S.); (B.C.R.)
| | - Artem V. Baklykov
- I. Ya. Postovsky Institute of Organic Synthesis of RAS (Ural Division), 22/20 S. Kovalevskoy/Akademicheskaya St., Yekaterinburg 620219, Russia;
| | - Albert F. Khasanov
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., Yekaterinburg 620002, Russia; (W.K.A.A.-I.); (R.A.); (A.F.K.); (I.S.K.); (I.L.N.); (D.S.K.); (S.S.); (B.C.R.)
| | - Igor S. Kovalev
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., Yekaterinburg 620002, Russia; (W.K.A.A.-I.); (R.A.); (A.F.K.); (I.S.K.); (I.L.N.); (D.S.K.); (S.S.); (B.C.R.)
| | - Igor L. Nikonov
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., Yekaterinburg 620002, Russia; (W.K.A.A.-I.); (R.A.); (A.F.K.); (I.S.K.); (I.L.N.); (D.S.K.); (S.S.); (B.C.R.)
- I. Ya. Postovsky Institute of Organic Synthesis of RAS (Ural Division), 22/20 S. Kovalevskoy/Akademicheskaya St., Yekaterinburg 620219, Russia;
| | - Dmitry S. Kopchuk
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., Yekaterinburg 620002, Russia; (W.K.A.A.-I.); (R.A.); (A.F.K.); (I.S.K.); (I.L.N.); (D.S.K.); (S.S.); (B.C.R.)
- I. Ya. Postovsky Institute of Organic Synthesis of RAS (Ural Division), 22/20 S. Kovalevskoy/Akademicheskaya St., Yekaterinburg 620219, Russia;
| | - Alexander S. Novikov
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya Nab., 7/9, Saint Petersburg 199034, Russia;
- Research Institute of Chemistry, Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklaya Street, 6, Moscow 117198, Russia
| | - Sougata Santra
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., Yekaterinburg 620002, Russia; (W.K.A.A.-I.); (R.A.); (A.F.K.); (I.S.K.); (I.L.N.); (D.S.K.); (S.S.); (B.C.R.)
| | - Grigory V. Zyryanov
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., Yekaterinburg 620002, Russia; (W.K.A.A.-I.); (R.A.); (A.F.K.); (I.S.K.); (I.L.N.); (D.S.K.); (S.S.); (B.C.R.)
- I. Ya. Postovsky Institute of Organic Synthesis of RAS (Ural Division), 22/20 S. Kovalevskoy/Akademicheskaya St., Yekaterinburg 620219, Russia;
| | - Brindaban C. Ranu
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., Yekaterinburg 620002, Russia; (W.K.A.A.-I.); (R.A.); (A.F.K.); (I.S.K.); (I.L.N.); (D.S.K.); (S.S.); (B.C.R.)
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
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Myasoedova TN, Gadzhieva VA, Miroshnichenko YS. Properties of mesoporous pani nanorods obtained by facil acid-free synthesis as a sorbent for methylene blue and indigo carmine removal. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03206-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Osipenko A, Garkushina I. The Effect of the Synthesis Method on Physicochemical Properties of Selective Granular Polymer Sorbents. Polymers (Basel) 2022; 14:polym14020353. [PMID: 35054763 PMCID: PMC8778989 DOI: 10.3390/polym14020353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 12/28/2021] [Accepted: 01/13/2022] [Indexed: 12/10/2022] Open
Abstract
Investigation of the effect of the polymer synthesis method on physicochemical properties of sorbents is one of the topical problems in the chemistry of macromolecular compounds that has high scientific and practical interest. Determination of the optimal synthesis method will make it possible to create sorbents with physicochemical properties that led to the realization of effective sorption. In this work, we investigated the effect of synthesis methods (Pickering emulsion polymerization and precipitation polymerization in solution) of granular polymers based on 2-hydroxyethyl methacrylate and ethylene glycol dimethacrylate on physicochemical and sorption properties. The synthesis by Pickering emulsion polymerization led to improvement of the n-propyl alcohol diffusion into the polymer network and to the formation of more homogeneous and structurally stable polymer networks. Creating selective polymer networks by Pickering emulsion polymerization compared to precipitation polymerization in solution led to an increase in porosity, creation of more segregated surface of granules, improvement of binding sites availability at the temperature of 37 °C, and formation of the homogeneous sorption surface with high affinity to target molecules at 25 °C and 37 °C. Selective polymers synthesized by both polymerization methods had the largest values of available sorption surfaces areas for target molecules at 37 °C.
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Stejskal J, Pekárek M, Trchová M, Kolská Z. Adsorption of organic dyes on macroporous melamine sponge incorporating conducting polypyrrole nanotubes. J Appl Polym Sci 2022. [DOI: 10.1002/app.52156] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jaroslav Stejskal
- Institute of Macromolecular Chemistry Academy of Sciences of the Czech Republic Prague 6 Czech Republic
| | - Michal Pekárek
- Institute of Macromolecular Chemistry Academy of Sciences of the Czech Republic Prague 6 Czech Republic
| | - Miroslava Trchová
- University of Chemistry and Technology, Prague Prague 6 Czech Republic
| | - Zdeňka Kolská
- Faculty of Science J.E. Purkyně University Ústí nad Labem Czech Republic
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Stejskal J, Trchová M, Kasparyan H, Kopecký D, Kolská Z, Prokeš J, Křivka I, Vajďák J, Humpolíček P. Pressure-Sensitive Conducting and Antibacterial Materials Obtained by in Situ Dispersion Coating of Macroporous Melamine Sponges with Polypyrrole. ACS OMEGA 2021; 6:20895-20901. [PMID: 34423197 PMCID: PMC8374914 DOI: 10.1021/acsomega.1c02330] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 06/16/2021] [Indexed: 05/24/2023]
Abstract
Melamine sponges were coated with polypyrrole during the in situ polymerization of pyrrole. The precipitation polymerization was compared with the dispersion mode, that is, with the preparation in the presence of poly(N-vinylpyrrolidone) and nanosilica as colloidal stabilizers. The coating of sponges during the dispersion polymerization leads to the elimination of the undesired polypyrrole precipitate, improved conductivity, and increased specific surface area. The sponges were tested with respect to their conductivity and as pressure-sensitive conducting materials with antibacterial performance.
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Affiliation(s)
- Jaroslav Stejskal
- Institute
of Macromolecular Chemistry, Academy of
Sciences of the Czech Republic, 162 06 Prague 6, Czech Republic
| | - Miroslava Trchová
- University
of Chemistry and Technology, Prague, 166 28 Prague 6, Czech Republic
| | - Hayk Kasparyan
- University
of Chemistry and Technology, Prague, 166 28 Prague 6, Czech Republic
| | - Dušan Kopecký
- University
of Chemistry and Technology, Prague, 166 28 Prague 6, Czech Republic
| | - Zdeňka Kolská
- Faculty
of Science, J.E. Purkyně University, 400 96 Ústí
nad Labem, Czech Republic
| | - Jan Prokeš
- Faculty
of Mathematics and Physics, Charles University, 180 00 Prague 8, Czech Republic
| | - Ivo Křivka
- Faculty
of Mathematics and Physics, Charles University, 180 00 Prague 8, Czech Republic
| | - Jan Vajďák
- Centre
of Polymer Systems, Tomas Bata University
in Zlín, 760 01 Zlín, Czech Republic
| | - Petr Humpolíček
- Centre
of Polymer Systems, Tomas Bata University
in Zlín, 760 01 Zlín, Czech Republic
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Stejskal J, Sapurina I, Vilčáková J, Humpolíček P, Truong TH, Shishov MA, Trchová M, Kopecký D, Kolská Z, Prokeš J, Křivka I. Conducting polypyrrole-coated macroporous melamine sponges: a simple toy or an advanced material? CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01776-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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