Tên bài báo:

Graphene Oxide/Silver Nanohybrid as Multi-functional Material for Highly Efficient Bacterial Disinfection and Detection of Organic Dye
Tác giả:
Ngô Xuân Đinh
Tham gia cùng:
Nguyễn Văn Cường
Tạp chí:
Năm xuất bản:
Từ trang 5321 đến trang 5333
Lĩnh vực:
Khoa học cơ bản
Phạm vi:
Quốc tế

Tóm tắt:

In this work, a multi-functional hybrid system consisting of graphene oxide and silver nanoparticles (GO-Ag NPs) was successfully synthesized by using a two-step chemical process. We firstly demonstrated noticeable bactericidal ability of the GO-Ag hybrid system. We provide more chemo-physical evidence explaining the antibacterial behavior of GO-Ag nanohybrid against Gramnegative Escherichia Coli and Gram-positive Staphylococcus aureus in light of ultrastructural damage analyses and Ag1+ ions release rate onto the cells/ medium. A further understanding of the mode of antimicrobial action is very important for designing and developing advanced antimicrobial systems. Secondly, we have also demonstrated that the GO-Ag nanohybrid material could be used as a potential surface enhanced Raman scattering (SERS) substrate to detect and quantify organic dyes, e.g., methylene blue (MB), in aqueous media. Our findings revealed that the GO-Ag hybrid system showed better SERS performance of MB detection than that of pure Ag-NPs. MB could be detected at a concentration as low as 1 ppm. The GO-Ag-based SERS platform can be effectively used to detect trace concentrations of various types of organic dyes in aqueous media. With the aforementioned properties, the GO-Ag hybrid system is found to be very promising as a multi-functional material for advanced biomedicine and environmental monitoring applications.

Từ khóa:

GO-Ag nanohybrid bactericidal electron microscopy MB detection surface enhanced Raman scattering
Thông tin tác giả
Ngô Xuân Đinh

Ngô Xuân Đinh

Thạc sỹ

Lý lịch khoa học