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Mostovoy A, Bekeshev A, Shcherbakov A, Tastanova L, Akhmetova M, Apendina A, Lopukhova M. Investigating the Structure and Properties of Epoxy Nanocomposites Containing Nanodiamonds Modified with Aminoacetic Acid. Polymers (Basel) 2024; 16:449. [PMID: 38399827 PMCID: PMC10891925 DOI: 10.3390/polym16040449] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 02/01/2024] [Accepted: 02/03/2024] [Indexed: 02/25/2024] Open
Abstract
This paper presents a study on the prospects of functionalizing nanodiamonds (NDs) with aminoacetic acid to obtain high-strength composites based on an epoxy matrix. The impact of the functionalization of the ND surface with aminoacetic acid in various concentrations on the properties of the epoxy composite was assessed. The success of grafting amine onto the ND surface was confirmed by X-ray phase analysis and IR spectroscopy. The results show a significant decrease in the average size of ND particles, from 400 nm for the pristine ones to 35 nm, and the contact angle, from 27° to 22°, with an increase in the specific surface area after treatment with a 5% solution of aminoacetic acid. Reducing the average size of NDs allows them to be better distributed throughout the epoxy matrix, which, as a result of the formation of chemical interaction at the matrix-nanofiller phase interface, can significantly increase the strength of the obtained composite. The addition of NDs treated with aminoacetic acid ensures an increase in the deformation-strength properties of epoxy composites by 19-23% relative to an epoxy composite containing the pristine NDs. Moreover, the presence of functionalized NDs significantly influences the structure and thermal stability of the epoxy nanocomposite.
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Affiliation(s)
- Anton Mostovoy
- Laboratory of Modern Methods of Research of Functional Materials and Systems, Yuri Gagarin State Technical University of Saratov, Polytechnichskaya Str., 77, 410054 Saratov, Russia
| | - Amirbek Bekeshev
- Laboratory of Polymer Composites, K. Zhubanov Aktobe Regional State University, Aliya Moldagulova Avenue 34, Aktobe 030000, Kazakhstan;
| | - Andrey Shcherbakov
- Laboratory of Support and Maintenance of the Educational Process, Yuri Gagarin State Technical University of Saratov, Polytechnichskaya Str., 77, 410054 Saratov, Russia;
| | - Lyazzat Tastanova
- Department “Chemistry and Chemical Technology”, K. Zhubanov Aktobe Regional State University, Aliya Moldagulova Avenue 34, Aktobe 030000, Kazakhstan; (L.T.); (A.A.)
| | - Marzhan Akhmetova
- Department “Physics”, K. Zhubanov Aktobe Regional State University, Aliya Moldagulova Avenue 34, Aktobe 030000, Kazakhstan;
| | - Ainagul Apendina
- Department “Chemistry and Chemical Technology”, K. Zhubanov Aktobe Regional State University, Aliya Moldagulova Avenue 34, Aktobe 030000, Kazakhstan; (L.T.); (A.A.)
| | - Marina Lopukhova
- Department of Economics and Humanitarian Sciences, Yuri Gagarin State Technical University of Saratov, Polytechnichskaya Str., 77, 410054 Saratov, Russia;
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Adotey EK, Amouei Torkmahalleh M, Tastanova L, Bekeshev A, Shah D, Hopke PK, Lee W, Balanay MP. Ultrasensitive fluorescent carbon dot sensor for quantification of soluble and insoluble Cr(VI) in particulate matter. J Hazard Mater 2024; 462:132671. [PMID: 37827102 DOI: 10.1016/j.jhazmat.2023.132671] [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: 06/23/2023] [Revised: 09/13/2023] [Accepted: 09/27/2023] [Indexed: 10/14/2023]
Abstract
This study investigates advanced functional materials to address the need for practical and affordable analytical techniques for monitoring large amounts of insoluble Cr(VI). N,S-doped fluorescent carbon dots (f-CDs) were fabricated through microwave synthesis, with an average diameter of 10 nm. These f-CDs were explored as potential sensors for detecting Cr(VI) in ambient particulate matter (PM). Laboratory experiments yielded positive results, showing average recoveries of 106.0%, 102.3%, 96.4%, and 101.7% for PbCrO4, BaCrO4, CaCrO4, and (NH4)2CrO4, respectively. Applying the fluorescence method to field PM samples, a method detection limit (MDL) of 0.32 ng/m3 for total Cr(VI) quantification was achieved. The fluorescence decay of carbon dots remained stable over time, suggesting that Cr(VI) quenching primarily occurred due to the internal filter effect through a static quenching mechanism. These f-CDs exhibited advantageous properties, including affordability, solubility, luminescence, and sensitivity, positioning them as a promising alternative for Cr(VI) detection in ambient air particulates. This study contributes to further developing carbon-based functional materials for detecting metallic air pollutants.
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Affiliation(s)
- Enoch Kwasi Adotey
- Department of Chemical and Materials Engineering, Nazarbayev University, Astana 010000, Kazakhstan
| | - Mehdi Amouei Torkmahalleh
- Division of Environmental and Occupational Health Sciences, School of Public Health, University of Illinois at Chicago, Chicago, IL 60612, USA.
| | - Lyazzat Tastanova
- K. Zhubanov Aktobe University, A. Moldagulova Ave., 34, 030000 Aktobe, Kazakhstan
| | - Amirbek Bekeshev
- K. Zhubanov Aktobe University, A. Moldagulova Ave., 34, 030000 Aktobe, Kazakhstan
| | - Dhawal Shah
- Department of Chemical and Materials Engineering, Nazarbayev University, Astana 010000, Kazakhstan
| | - Philip K Hopke
- Department of Public Health Sciences, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, USA
| | - Woojin Lee
- Department of Civil and Environmental Engineering, Nazarbayev University, Astana 010000, Kazakhstan
| | - Mannix P Balanay
- Department of Chemistry, Nazarbayev University, Astana 010000, Kazakhstan.
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Adotey EK, Burkutova L, Tastanova L, Bekeshev A, Balanay MP, Sabanov S, Rule AM, Hopke PK, Amouei Torkmahalleh M. Quantification and the sources identification of total and insoluble hexavalent chromium in ambient PM: A case study of Aktobe, Kazakhstan. Chemosphere 2022; 307:136057. [PMID: 35995192 DOI: 10.1016/j.chemosphere.2022.136057] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 05/03/2022] [Revised: 08/08/2022] [Accepted: 08/09/2022] [Indexed: 06/15/2023]
Abstract
Hexavalent chromium (Cr(VI)), a known carcinogen, emanates from both anthropogenic and natural sources. A pilot study of the ambient Cr(VI) concentrations was conducted at the center of Aktobe which is a few kilometers away from major industrial chromium plants. Total Cr(VI) concentrations were measured in the fall and winter seasons with mean values (S.D) of 5.30 (2.16) ng/m3 and 2.26 (1.80) ng/m3, respectively. Insoluble Cr(VI) levels were 4.80 (1.96) and 2.19 (1.75) ng/m3 for the fall and winter, respectively. The total and insoluble Cr(VI) concentrations in the fall season were significantly higher than in winter, likely due to the higher rate of Cr(III) oxidation in the presence of ozone and ROS in fall compared to the rate of Cr(VI) reduction in the presence of VOCs at higher temperatures. On average, total Cr(VI) constituted 34.49% of the total Cr concentrations suggesting that the dominant valence state of Cr in the atmosphere is Cr(III). The previous reference values of exposure to Cr(VI) must be revisited by taking into account the insoluble Cr(VI) concentration since it is more prevalent in the atmosphere compared to soluble Cr(VI). The influence of the chromium plants as potential sources was not obvious in this study.
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Affiliation(s)
- Enoch K Adotey
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan, 010000, Kazakhstan
| | - Lyailya Burkutova
- K. Zhubanov Aktobe University, A. Moldagulova Ave., 34, 030000, Aktobe, Kazakhstan
| | - Lyazzat Tastanova
- K. Zhubanov Aktobe University, A. Moldagulova Ave., 34, 030000, Aktobe, Kazakhstan
| | - Amirbek Bekeshev
- K. Zhubanov Aktobe University, A. Moldagulova Ave., 34, 030000, Aktobe, Kazakhstan
| | - Mannix P Balanay
- Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan, 010000, Kazakhstan
| | - Sergei Sabanov
- Department of Mining, School of Mining and Geosciences, Nazarbayev University, Nur-Sultan, 010000, Kazakhstan
| | - Anna M Rule
- Department of Public Health Sciences, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, USA
| | - Philip K Hopke
- Institute for a Sustainable Environment, Clarkson University, Potsdam, NY 13699, USA; Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 20209, USA
| | - Mehdi Amouei Torkmahalleh
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan, 010000, Kazakhstan; Division of Environmental and Occupational Health Sciences, School of Public Health, University of Illinois at Chicago, Chicago, IL 60612, USA.
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Meiramkulova K, Devrishov D, Marzanov N, Marzanova S, Kydyrbekova A, Uryumtseva T, Tastanova L, Mkilima T. Performance of Graphite and Titanium as Cathode Electrode Materials on Poultry Slaughterhouse Wastewater Treatment. Materials (Basel) 2020; 13:E4489. [PMID: 33050440 PMCID: PMC7601237 DOI: 10.3390/ma13204489] [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] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 10/01/2020] [Accepted: 10/05/2020] [Indexed: 11/24/2022]
Abstract
Despite the potential applicability of the combination between aluminium (anode) and graphite or titanium (cathode) for poultry slaughterhouse wastewater treatment, their technical and economic feasibilities have not been comprehensively captured. In this study, aluminium (anode) and graphite and titanium as cathode electrode materials were investigated and compared in terms of their performance on poultry slaughterhouse wastewater treatment. The wastewater samples collected from the Izhevsk Production Corporative (PC) poultry farm in Kazakhstan were treated using a lab-based electrochemical treatment plant and then analyzed after every 20 and 40 min of the treatment processes. Cost analysis for both electrode combinations was also performed. From the analysis results, the aluminium-graphite electrode combination achieved high removal efficiency from turbidity, color, nitrite, phosphates, and chemical oxygen demand, with removal efficiency ranging from 72% to 98% after 20 min, as well as 88% to 100% after 40 min. A similar phenomenon was also observed from the aluminium-titanium electrode combination, with high removal efficiency achieved from turbidity, color, total suspended solids, nitrite, phosphates, and chemical oxygen demand, ranging from 81% to 100% after 20 min as well as from 91% to 100% after 40 min. This means the treatment performances for both aluminium-graphite and aluminium-titanium electrode combinations were highly affected by the contact time. The general performance in terms of removal efficiency indicates that the aluminium-titanium electrode combination outperformed the aluminium-graphite electrode combination. However, the inert character of the graphite electrode led to a positive impact on the total operating cost. Therefore, the aluminium-graphite electrode combination was observed to be cheaper than the aluminium-titanium electrode combination in terms of the operating cost.
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Affiliation(s)
- Kulyash Meiramkulova
- Department of Environmental Engineering and Management, Faculty of Natural Sciences, L.N. Gumilyov Eurasian National University, Satpayev Street 2, Nur-Sultan 010000, Kazakhstan; (K.M.); (A.K.)
| | - Davud Devrishov
- Department of Immunology and Biotechnology, Moscow State Academy of Veterinary Medicine and Biotechnology, 23 Scryabin Street, Moscow 109472, Russian; (D.D.); (S.M.)
| | - Nurbiy Marzanov
- Laboratory of molecular basis of breeding, L.K.Ernst Federal Science Center for Animal Husbandry, Dubrovitsy 60, Podolsk Municipal District, Moscow Region 142132, Russia;
| | - Saida Marzanova
- Department of Immunology and Biotechnology, Moscow State Academy of Veterinary Medicine and Biotechnology, 23 Scryabin Street, Moscow 109472, Russian; (D.D.); (S.M.)
| | - Aliya Kydyrbekova
- Department of Environmental Engineering and Management, Faculty of Natural Sciences, L.N. Gumilyov Eurasian National University, Satpayev Street 2, Nur-Sultan 010000, Kazakhstan; (K.M.); (A.K.)
| | - Tatyana Uryumtseva
- Department of Agriculture and Bioresources, Innovative University of Eurasia, Lomov Street 45, Pavlodar 14008, Kazakhstan;
| | - Lyazzat Tastanova
- Department of Chemistry and Technology, K.Zhubanov, Aktobe Regional State University, A.Moldagulova Avenue 34, Aktobe 030000, Kazakhstan;
| | - Timoth Mkilima
- Department of Civil Engineering, Faculty of Architecture and Construction, L.N. Gumilyov Eurasian National University, Satpayev Street 2, Nur-Sultan 010000, Kazakhstan
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