Uv 1650 pc b uv visible spectrophotometer

The SG-stabilized AuNPs suspension was characterized by ultraviolet-visible spectroscopy (UV-Vis), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and energy dispersive X-ray fluorescence spectrometry (EDXRF). The UV-visible spectra were recorded over the 300–1000 nm range with a UV 1650 PC-Shimadzu B UV-visible spectrophotometer (Shimadzu, Osaka, Japan). TEM observations were carried out on a H-7100 electron microscope (Hitachi, Tokyo, Japan), and the particle size distributions determined using the UTHSCSA Image Tool version 3.0 program. SEM was performed using a Philips XL-30 instrument (Philips, Eindhoven, The Netherlands) to examine the morphology of Au/SG. The EDXRF was carried out on a DX-700HS spectrometer (Shimadzu).

The reduction of Ag-NPs was monitored using UV 1650 PC-Shimadzu B UV-visible spectrophotometer (Shimadzu, Osaka, Japan). TEM analysis was carried out using a JEOL JEM 2100 (TEM) operated at 200 KV. Samples were mounted on a carbon coated grid. FTIR analysis was done by using a Perkin Elmer Spectrophotometer (Los Angeles, CA, USA).