TAILIEUCHUNG - UV assisted in situ synthesis of silver nanostructures in a metallogel network
In this paper, we represent the green synthesis of silver nanostructures using a metallogel of silver ions incorporated with Cholesteryl Pyridine Carbamate (CPC) gelator as a soft template and the UV-induced reduction of silver ions to silver nanoparticles (AgNPs). | Journal of Science & Technology 126 (2018) 063-066 UV-Assisted in Situ Synthesis of Silver Nanostructures in a Metallogel Network Nguyen Ngoc Thang1,*, Liu Jui Hsiang2 1 Hanoi University of Science and Technology – No. 1, Dai Co Viet Str., Hai Ba Trung, Ha Noi, Viet Nam 2 National Cheng Kung University - No. 1, Daxue Road, East District, Tainan, Taiwan Received: October 03, 2017; Accepted: May 25, 2018 Abstract In this paper, we represent the green synthesis of silver nanostructures using a metallogel of silver ions incorporated with Cholesteryl Pyridine Carbamate (CPC) gelator as a soft template and the UV-induced reduction of silver ions to silver nanoparticles (AgNPs). The metallogel and AgNPs were characterized by UV–Vis spectroscopy, scanning electron microscopy (SEM) coupled with an energy dispersive spectrometer (EDS), and transmission electron microscopy (TEM). The results from UV-Vis analysis confirmed a 1/2 ratio of silver ion to the CPC ligand in the complex, and the stability constant of the complex (K c) was about × 1015 M-2, indicative of very stable coordination of the complex in ethanol. Morphological measurements revealed the highly fibrous network structure observed in both the neat CPC gel and the metallogel. Furthermore, the formation of “hairy stem-like” hollow fibers containing AgNPs were observed in the metallogel after UV irradiation, which is a rare observation in other metallogels. Keywords: Cholesteryl Pyridine Carbamate, Metallogel, Silver nanoparticles, UV-assisted synthesis. 1. Introduction* synthesized [8]. The CPC molecule and its metallic complex exhibited gelation ability the mixture solvent of water and anisole to form tubular structures in the 3D gel networks. These organized nanotubes acted as a structure-directing template for the in situ construction of AgNPs linear arrays and ultralong silver nanowires via the classic silver mirror reaction. In continuation to our previous efforts, present interest is to perform in .
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