A Convenient Ultraviolet Irradiation Technique for Synthesis of Antibacterial Ag-Pal Nanocomposite.
In the present work, palygorskite (Pal) was initially subjected to an ion-exchange reaction with silver ions (Pal-Ag(+)). Subsequently, Ag-Pal nanocomposites were assembled by a convenient ultraviolet irradiation technique, using carbon dots (CDs) derived from wool fiber as the reducing agent. The obtained nanocomposites were characterized by powder X-ray diffraction (XRD), ultraviolet-visible (UV-vis) spectroscopy, transmission electron microscopy (TEM), and Fourier transform infrared spectroscopy. The XRD patterns and UV-vis absorption spectra confirmed the formation of the Ag nanoparticles (NPs). Meanwhile, the TEM images showed that the Ag NPs, which exhibited sizes in the range of 3-7 nm, were located on the surface of the Pal nanofiber structures. Furthermore, the antibacterial activity of the nanocomposites was evaluated against Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria by applying the disc diffusion method and minimum inhibitory concentration test. Owing to their good antibacterial properties, the Ag-Pal nanocomposites are considered to be a promising bactericide with great potential applications.
College of Science, Hebei University of Engineering, Handan, 056038, Hebei, People's Republic of China.|Hebei Collaborative Innovation Center of Coal Exploitation, Hebei University of Engineering, Handan, 056038, People's Republic of China.
Shuai
S
Han
College of Life Science, Lanzhou University, Lanzhou, 730000, People's Republic of China.
He
H
Zhang
College of Science, Hebei University of Engineering, Handan, 056038, Hebei, People's Republic of China.
Lianwei
L
Kang
College of Science, Hebei University of Engineering, Handan, 056038, Hebei, People's Republic of China.
Xiaoliang
X
Li
College of Science, Hebei University of Engineering, Handan, 056038, Hebei, People's Republic of China.
Chong
C
Zhang
College of Science, Hebei University of Engineering, Handan, 056038, Hebei, People's Republic of China.
Yongjie
Y
Dong
College of Science, Hebei University of Engineering, Handan, 056038, Hebei, People's Republic of China. qsjhbhd@163.com.|Hebei Collaborative Innovation Center of Coal Exploitation, Hebei University of Engineering, Handan, 056038, People's Republic of China. qsjhbhd@163.com.
Shenjun
S
Qin
Ag NPs; Antibacterial activities; Carbon dots; Nanocomposite; Palygorskite
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