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La DD, Pham KTT, Lai HT, Tran DL, Van Bui C, Nguyen PHT, Chang SW, Um MJ, Nguyen DD. Fabrication of Antibacterial Ag/Graphene-Integrated Non-woven Polypropylene Textile for Air Pollutant Filtering. WASTE AND BIOMASS VALORIZATION 2023:1-10. [PMID: 37363338 PMCID: PMC10034908 DOI: 10.1007/s12649-023-02101-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 02/25/2023] [Indexed: 06/28/2023]
Abstract
Air pollution and infectious diseases (such as the COVID-19 pandemic) have attracted considerable attention from governments and scientists worldwide to find the best solutions to address these issues. In this study, a new simultaneous antibacterial and particulate matter (PM) filtering Ag/graphene-integrated non-woven polypropylene textile was fabricated by simply immersing the textile into a Ag/graphene-containing solution. The Ag/graphene nanocomposite was prepared by reducing Ag ions on the surface of graphene nanoplatelets (GNPs) using the leaf extract. The prepared Ag/graphene textile was characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), Energy Dispersive X-ray (EDX), and contact angle measurements. The results showed excellent integration of the Ag/GNP nanocomposite into the non-woven polypropylene textile matrix. The prepared textile exhibited superhydrophobicity with a contact angle of 152°. The maximum PM removal percentage of the Ag/GNP-integrated textile was determined to be 98.5% at an Ag/GNP content of 1.5% w/w and a silicon adhesive of 1% w/w. The Ag/GNP textile exhibited high antibacterial activity toward Escherichia coli with no sign of bacteria on the surface. Remarkably, the as-prepared Ag/GNP textile was highly durable and stable and could be reused many times after washing. Graphical Abstract
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Affiliation(s)
- Duong Duc La
- Institute of Chemistry and Materials, Nghia Do, Cau Giay, Hanoi, Vietnam
| | - Kieu Trang Thi Pham
- School of Chemical Engineering, Hanoi University of Science and Technology, 1 Dai Co Viet, Hanoi, Vietnam
- Applied Nano Technology Joint Stock Company, Xuan La, Tay Ho, Hanoi, Vietnam
| | - Hoan Thi Lai
- University of Transport and Communications, 3 Cau Giay, Dong Da, Hanoi, Vietnam
| | - Duc Luong Tran
- Faculty of Fundamental Science, Nam Dinh University of Nursing, Nam Dinh, Vietnam
| | - Cong Van Bui
- Applied Nano Technology Joint Stock Company, Xuan La, Tay Ho, Hanoi, Vietnam
| | - Phuong Hong Thi Nguyen
- School of Chemical Engineering, Hanoi University of Science and Technology, 1 Dai Co Viet, Hanoi, Vietnam
| | - S. Wong Chang
- Department of Environmental Energy Engineering, Kyonggi University, Suwon, Republic of Korea
| | - Myoung-Jin Um
- Department of Environmental Energy Engineering, Kyonggi University, Suwon, Republic of Korea
- Department of Civil Engineering, Kyonggi University, Suwon, Republic of Korea
| | - D. Duc Nguyen
- Department of Environmental Energy Engineering, Kyonggi University, Suwon, Republic of Korea
- Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University, Ho Chi Minh, Vietnam
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Duy LNP, Bui C, Nguyen LT, Nguyen TH, Tung NT, La DD. Dioctyl Phthalate-Modified Graphene Nanoplatelets: An Effective Additive for Enhanced Mechanical Properties of Natural Rubber. Polymers (Basel) 2022; 14:polym14132541. [PMID: 35808586 PMCID: PMC9269448 DOI: 10.3390/polym14132541] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 06/14/2022] [Accepted: 06/17/2022] [Indexed: 11/16/2022] Open
Abstract
Graphene has been extensively considered an ideal additive to improve the mechanical properties of many composite materials, including rubbers, because of its novel strength, high surface area, and remarkable thermal and electron conductivity. However, the pristine graphene shows low dispersibility in the rubber matrix resulting in only slightly enhanced mechanical properties of the rubber composite. In this work, graphene nanoplatelets (GNPs) were modified with dioctyl phthalate (DOP) to improve the dispersibility of the graphene in the natural rubber (NR). The distribution of the DOP-modified GNPs in the NR matrix was investigated using scanning electron microscopy, X-ray diffraction, and Raman spectroscopy. The effect of the modified GNPs’ contents on the mechanical properties of the GNPs/NR composite was studied in detail. The results showed that the abrasion resistance of the graphene-reinforced rubber composite significantly improved by 10 times compared to that of the rubber without graphene (from 0.3 to 0.03 g/cycle without and with addition of the 0.3 phr modified GNPs). The addition of the modified GNPs also improved the shear and tensile strength of the rubber composite. The tensile strength and shear strength of the NR/GNPs composite with a GNPs loading of 0.3 phr were determined to be 23.63 MPa and 42.69 N/mm, respectively. Even the presence of the graphene reduced the other mechanical properties such as Shore hardness, elongation at break, and residual elongation; however, these reductions were negligible, which still makes the modified GNPs significant as an effective additive for the natural rubber in applications requiring high abrasion resistance.
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Affiliation(s)
- Linh Nguyen Pham Duy
- Center for Polymer Composite and Paper, School of Chemical Engineering, Hanoi University of Science and Technology, Hai Ba Trung, Hanoi 100000, Vietnam; (L.N.P.D.); (C.B.); (L.T.N.); (T.H.N.)
| | - Chuong Bui
- Center for Polymer Composite and Paper, School of Chemical Engineering, Hanoi University of Science and Technology, Hai Ba Trung, Hanoi 100000, Vietnam; (L.N.P.D.); (C.B.); (L.T.N.); (T.H.N.)
| | - Liem Thanh Nguyen
- Center for Polymer Composite and Paper, School of Chemical Engineering, Hanoi University of Science and Technology, Hai Ba Trung, Hanoi 100000, Vietnam; (L.N.P.D.); (C.B.); (L.T.N.); (T.H.N.)
| | - Tung Huy Nguyen
- Center for Polymer Composite and Paper, School of Chemical Engineering, Hanoi University of Science and Technology, Hai Ba Trung, Hanoi 100000, Vietnam; (L.N.P.D.); (C.B.); (L.T.N.); (T.H.N.)
| | - Nguyen Thanh Tung
- Institute of Materials Science and Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18-Hoang Quoc Viet, Hanoi 100000, Vietnam;
| | - Duong Duc La
- Institute of Chemistry and Materials, Hoang Sam, Nghia Do, Cau Giay, Hanoi 100000, Vietnam
- Correspondence:
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Wong LY, Lau SY, Pan S, Lam MK. 3D graphene-based adsorbents: Synthesis, proportional analysis and potential applications in oil elimination. CHEMOSPHERE 2022; 287:132129. [PMID: 34509009 DOI: 10.1016/j.chemosphere.2021.132129] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 08/24/2021] [Accepted: 08/31/2021] [Indexed: 06/13/2023]
Abstract
The suitability and efficacy of three-dimensional (3D) graphene, including its derivatives, have garnered widespread attention towards the development of novel, sustainable materials with ecological amenability. This is especially relevant towards its utilization as adsorbents of wastewater contaminants, such as heavy metals, dyes, and oil, which could be majorly attributed to its noteworthy physicochemical features, particularly elevated chemical and mechanical robustness, advanced permeability, as well as large specific surface area. In this review, we emphasize on the adsorptive elimination of oil particles from contaminated water. Specifically, we assess and collate recent literature on the conceptualization and designing stages of 3D graphene-based adsorbents (3DGBAs) towards oil adsorption, including their applications in either batch or continuous modes. In addition, we analytically evaluate the adsorption mechanism, including sorption sites, physical properties, surface chemistry of 3DGBA and interactions between the adsorbent and adsorbate involving the adsorptive removal of oil, as well as numerous effects of adsorption conditions on the adsorption performance, i.e. pH, temperature, initial concentration of oil contaminants and adsorbent dosage. Furthermore, we focus on the equilibrium isotherms and kinetic studies, in order to comprehend the oil elimination procedures. Lastly, we designate encouraging avenues and recommendations for a perpetual research thrust, and outline the associated future prospects and perspectives.
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Affiliation(s)
- Lee Yi Wong
- Department of Chemical Engineering, Curtin University, CDT 250, 98009, Miri, Sarawak, Malaysia
| | - Sie Yon Lau
- Department of Chemical Engineering, Curtin University, CDT 250, 98009, Miri, Sarawak, Malaysia.
| | - Sharadwata Pan
- TUM School of Life Sciences, Technical University of Munich, Freising, 85354, Germany
| | - Man Kee Lam
- Chemical Engineering Department, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak Darul Ridzuan, Malaysia
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La DD, Truong TN, Pham TQ, Vo HT, Tran NT, Nguyen TA, Nadda AK, Nguyen TT, Chang SW, Chung WJ, Nguyen DD. Scalable Fabrication of Modified Graphene Nanoplatelets as an Effective Additive for Engine Lubricant Oil. NANOMATERIALS 2020; 10:nano10050877. [PMID: 32370058 PMCID: PMC7279219 DOI: 10.3390/nano10050877] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 04/10/2020] [Accepted: 04/11/2020] [Indexed: 02/07/2023]
Abstract
The use of nano-additives is widely recognized as a cheap and effective pathway to improve the performance of lubrication by minimizing the energy loss from friction and wear, especially in diesel engines. In this work, a simple and scalable protocol was proposed to fabricate a graphene additive to improve the engine lubricant oil. Graphene nanoplates (GNPs) were obtained by a one-step chemical exfoliation of natural graphite and were successfully modified with a surfactant and an organic compound to obtain a modified GNP additive, that can be facilely dispersed in lubricant oil. The GNPs and modified GNP additive were characterized using scanning electron microscopy, X-ray diffraction, atomic force microscopy, Raman spectroscopy, and Fourier-transform infrared spectroscopy. The prepared GNPs had wrinkled and crumpled structures with a diameter of 10–30 µm and a thickness of less than 15 nm. After modification, the GNP surfaces were uniformly covered with the organic compound. The addition of the modified GNP additive to the engine lubricant oil significantly enhanced the friction and antiwear performance. The highest reduction of 35% was determined for the wear scar diameter with a GNP additive concentration of approximately 0.05%. The mechanism for lubrication enhancement by graphene additives was also briefly discussed.
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Affiliation(s)
- Duong Duc La
- Institute of Chemistry and Materials, Nghia Do, Cau Giay, Hanoi 10000, Vietnam; (T.N.T.); (T.Q.P.)
- Correspondence: (D.D.L.); (N.T.T.); or (D.D.N.); Tel.: +84-966-185368 (D.D.L.)
| | - Tuan Ngoc Truong
- Institute of Chemistry and Materials, Nghia Do, Cau Giay, Hanoi 10000, Vietnam; (T.N.T.); (T.Q.P.)
| | - Thuan Q. Pham
- Institute of Chemistry and Materials, Nghia Do, Cau Giay, Hanoi 10000, Vietnam; (T.N.T.); (T.Q.P.)
| | - Hoang Tung Vo
- Environmental Institute, Vietnam Maritime University, Haiphong city 180000, Vietnam;
| | - Nam The Tran
- Environmental Institute, Vietnam Maritime University, Haiphong city 180000, Vietnam;
- Correspondence: (D.D.L.); (N.T.T.); or (D.D.N.); Tel.: +84-966-185368 (D.D.L.)
| | - Tuan Anh Nguyen
- Advanced Nanomaterial Lab, Applied Nano Technology Jsc., Xuan La, Tay Ho, Hanoi 100000, Vietnam;
| | - Ashok Kumar Nadda
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Waknaghat 173215, India;
| | - Thanh Tung Nguyen
- Institute of Materials Science, Vietnam Academy of Science and Technology, Hanoi 100000, Vietnam;
| | - S. Woong Chang
- Department of Environmental Energy Engineering, Kyonggi University, Suwon 16227, Korea; (S.W.C.); (W.J.C.)
| | - W. Jin Chung
- Department of Environmental Energy Engineering, Kyonggi University, Suwon 16227, Korea; (S.W.C.); (W.J.C.)
| | - D. Duc Nguyen
- Institution of Research and Development, Duy Tan University, Da Nang 550000, Vietnam
- Correspondence: (D.D.L.); (N.T.T.); or (D.D.N.); Tel.: +84-966-185368 (D.D.L.)
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