Evaluation of green-synthesized silver nanoparticle-loaded graphene oxide (AgNPs@GO) nanocomposite toward bio logical wastewater filtration
Although silver nanoparticles have long attracted scientists due to their remarkable antibacterial properties, the tendency of AgNPs to agglomerate results in diminished antibacterial activities and increased toxicity against normal cells. Among carbon-based nanomaterials, graphene oxide (GO), the o...
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Elsevier
2024-12-01
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| Series: | Case Studies in Chemical and Environmental Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666016424001592 |
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| author | Mai Thanh Phong Thanh An Nguyen Nhi Nguyen Thi Yen Van Khai Tran Vinh-Dat Vuong Minh Hien Nguyen Tan Thi Pham Thang Van Le |
| author_facet | Mai Thanh Phong Thanh An Nguyen Nhi Nguyen Thi Yen Van Khai Tran Vinh-Dat Vuong Minh Hien Nguyen Tan Thi Pham Thang Van Le |
| author_sort | Mai Thanh Phong |
| collection | DOAJ |
| description | Although silver nanoparticles have long attracted scientists due to their remarkable antibacterial properties, the tendency of AgNPs to agglomerate results in diminished antibacterial activities and increased toxicity against normal cells. Among carbon-based nanomaterials, graphene oxide (GO), the oxidized form of graphene, can be utilized as a base for AgNPs to grow and disperse. Regarding the chemical approach, it is conventional to engage sodium borohydride (NaBH4) or hydrazine to reduce silver ions. However, using excessive amounts of these chemicals raises concerns about toxicity in biomedical applications and environmental issues. Here, this work report the synthesis of AgNPs@GO nanocomposites by reducing silver nitrate on GO using various green reducing agents, including ascorbic acid, Houttuynia cordata Thunb. leaf extract, Coffea robusta L. Linden (Robusta green coffee) bean extract, and Camellia sinensis (L.) Kuntze (green tea) leaf extract. The synthesized AgNPs@GO were characterized by X-ray diffraction spectrum, UV–Vis analysis, and dynamic light scattering, followed by an evaluation of the antibacterial activity using the diffusion agar method. The results demonstrate the high potential of green tea as a green-reducing agent in the synthesis procedure of AgNPs. The synthesized AgNPs@GO using green tea extract showed a similar UV–Vis spectral shape compared to the AgNPs@GO synthesized using NaBH4 with the maximum absorption wavelengths of AgNPs at 428 nm and GO at 203.5 nm. The AgNPs@GO synthesized also had the smallest average diameter (609.67 nm) and the highest magnitude of the zeta potential (29.83 mV) among all synthesized samples. Noteworthy is that AgNPs@GO synthesized with green tea extract demonstrated significant stability over 40 days. Furthermore, the results of the antibacterial experiments reveal that the diameter of the inhibitory zone was approximately 2 mm, half that of the control drug amoxicillin (1 mg/mL). In summary, green tea leaf extract emerged as the most effective reducing agent for the eco-friendly synthesis of stable and durable AgNPs@GO. This indicates a suitable and straightforward process for large-scale antibacterial production with potential applications in biological wastewater treatment. |
| format | Article |
| id | doaj-art-649cef25d207486db551242cba8f42d5 |
| institution | Kabale University |
| issn | 2666-0164 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
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| series | Case Studies in Chemical and Environmental Engineering |
| spelling | doaj-art-649cef25d207486db551242cba8f42d52024-12-02T05:05:27ZengElsevierCase Studies in Chemical and Environmental Engineering2666-01642024-12-0110100765Evaluation of green-synthesized silver nanoparticle-loaded graphene oxide (AgNPs@GO) nanocomposite toward bio logical wastewater filtrationMai Thanh Phong0Thanh An Nguyen1Nhi Nguyen Thi Yen2Van Khai Tran3Vinh-Dat Vuong4Minh Hien Nguyen5Tan Thi Pham6Thang Van Le7Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet, Ward 14, District 10, Ho Chi Minh City, Viet Nam; Vietnam National University Ho Chi Minh City, Quarter 6, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Viet NamHo Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet, Ward 14, District 10, Ho Chi Minh City, Viet Nam; Vietnam National University Ho Chi Minh City, Quarter 6, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Viet NamVietnam National University Ho Chi Minh City, Quarter 6, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Viet Nam; School of Medicine, Vietnam National University Ho Chi Minh City, YA1 Administrative Building, Hai Thuong Lan Ong, Di An City, Binh Duong Province, Viet NamHo Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet, Ward 14, District 10, Ho Chi Minh City, Viet Nam; Vietnam National University Ho Chi Minh City, Quarter 6, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Viet NamHo Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet, Ward 14, District 10, Ho Chi Minh City, Viet Nam; Vietnam National University Ho Chi Minh City, Quarter 6, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Viet NamVietnam National University Ho Chi Minh City, Quarter 6, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Viet Nam; School of Medicine, Vietnam National University Ho Chi Minh City, YA1 Administrative Building, Hai Thuong Lan Ong, Di An City, Binh Duong Province, Viet NamHo Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet, Ward 14, District 10, Ho Chi Minh City, Viet Nam; Vietnam National University Ho Chi Minh City, Quarter 6, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Viet Nam; Corresponding author. Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet, Ward 14, District 10, Ho Chi Minh City, Viet Nam.Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet, Ward 14, District 10, Ho Chi Minh City, Viet Nam; Vietnam National University Ho Chi Minh City, Quarter 6, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Viet Nam; Corresponding author. Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet, Ward 14, District 10, Ho Chi Minh City, Viet Nam.Although silver nanoparticles have long attracted scientists due to their remarkable antibacterial properties, the tendency of AgNPs to agglomerate results in diminished antibacterial activities and increased toxicity against normal cells. Among carbon-based nanomaterials, graphene oxide (GO), the oxidized form of graphene, can be utilized as a base for AgNPs to grow and disperse. Regarding the chemical approach, it is conventional to engage sodium borohydride (NaBH4) or hydrazine to reduce silver ions. However, using excessive amounts of these chemicals raises concerns about toxicity in biomedical applications and environmental issues. Here, this work report the synthesis of AgNPs@GO nanocomposites by reducing silver nitrate on GO using various green reducing agents, including ascorbic acid, Houttuynia cordata Thunb. leaf extract, Coffea robusta L. Linden (Robusta green coffee) bean extract, and Camellia sinensis (L.) Kuntze (green tea) leaf extract. The synthesized AgNPs@GO were characterized by X-ray diffraction spectrum, UV–Vis analysis, and dynamic light scattering, followed by an evaluation of the antibacterial activity using the diffusion agar method. The results demonstrate the high potential of green tea as a green-reducing agent in the synthesis procedure of AgNPs. The synthesized AgNPs@GO using green tea extract showed a similar UV–Vis spectral shape compared to the AgNPs@GO synthesized using NaBH4 with the maximum absorption wavelengths of AgNPs at 428 nm and GO at 203.5 nm. The AgNPs@GO synthesized also had the smallest average diameter (609.67 nm) and the highest magnitude of the zeta potential (29.83 mV) among all synthesized samples. Noteworthy is that AgNPs@GO synthesized with green tea extract demonstrated significant stability over 40 days. Furthermore, the results of the antibacterial experiments reveal that the diameter of the inhibitory zone was approximately 2 mm, half that of the control drug amoxicillin (1 mg/mL). In summary, green tea leaf extract emerged as the most effective reducing agent for the eco-friendly synthesis of stable and durable AgNPs@GO. This indicates a suitable and straightforward process for large-scale antibacterial production with potential applications in biological wastewater treatment.http://www.sciencedirect.com/science/article/pii/S2666016424001592NanocompositeAntibacterialSilver nanoparticlesGraphene oxideGreen synthesis |
| spellingShingle | Mai Thanh Phong Thanh An Nguyen Nhi Nguyen Thi Yen Van Khai Tran Vinh-Dat Vuong Minh Hien Nguyen Tan Thi Pham Thang Van Le Evaluation of green-synthesized silver nanoparticle-loaded graphene oxide (AgNPs@GO) nanocomposite toward bio logical wastewater filtration Case Studies in Chemical and Environmental Engineering Nanocomposite Antibacterial Silver nanoparticles Graphene oxide Green synthesis |
| title | Evaluation of green-synthesized silver nanoparticle-loaded graphene oxide (AgNPs@GO) nanocomposite toward bio logical wastewater filtration |
| title_full | Evaluation of green-synthesized silver nanoparticle-loaded graphene oxide (AgNPs@GO) nanocomposite toward bio logical wastewater filtration |
| title_fullStr | Evaluation of green-synthesized silver nanoparticle-loaded graphene oxide (AgNPs@GO) nanocomposite toward bio logical wastewater filtration |
| title_full_unstemmed | Evaluation of green-synthesized silver nanoparticle-loaded graphene oxide (AgNPs@GO) nanocomposite toward bio logical wastewater filtration |
| title_short | Evaluation of green-synthesized silver nanoparticle-loaded graphene oxide (AgNPs@GO) nanocomposite toward bio logical wastewater filtration |
| title_sort | evaluation of green synthesized silver nanoparticle loaded graphene oxide agnps go nanocomposite toward bio logical wastewater filtration |
| topic | Nanocomposite Antibacterial Silver nanoparticles Graphene oxide Green synthesis |
| url | http://www.sciencedirect.com/science/article/pii/S2666016424001592 |
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