Synthesis of hybrid silver–doped graphene oxide material as a superior antibacterial performance and cadmium ion sensor

Linh Nguyen Thi Thuy, Cong Che Quang, Dat Nguyen Minh, Diep Tran Chau, Tinh Ninh Thi, Thinh Doan Ba, Nam Nguyen Thanh Hoai, Khang Chau Gia, Lieu Le Thi Bich, Oanh Doan Thi Yen, Nam Hoang Minh, Phong Mai Thanh, Hieu Nguyen Huu

Abstract


In this study, in-situ method was applied for synthesizing silver-doped graphene oxide (Ag/GO). The material was extensively characterized by X-ray diffraction, Transmission electron microscopy, Scanning electron microscope, Raman spectroscopy, energy-dispersive X-ray spectroscopy, and UV-Vis spectroscopy. The characterization analysis results demonstrated that Ag/GO nanocomposite was successfully synthesized, revealing the formation of AgNPs on GO sheets with an average diameter ranging from 15 to 30 nm. The Ag/GO nanocomposite exhibited excellent antibacterial effect against three strains of  Gram-negative (Escherichia coli, Pseudomonas aeruginosa), and Gram-positive (Staphylococcus aureus) bacteria using the zone inhibition method. Moreover, the Ag/GO nanocomposite was also useful for the detection of Cd2+ ions in an aqueous solution with a detection limit of 10.15 mg/L. This study developed an eco-friendly route for the fabrication of Ag/GO nanocomposite using a non-toxic procedure that could be a great potential for biomedical-related applications and colorimetric detection of heavy metal present in water.

Keywords


Silver–doped graphene oxide; antibacterial; cadmium ion

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References


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DOI: https://doi.org/10.51316/jca.2021.119

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