Title
A Study of Pt-Sn Nanoparticles by Scanning Tunneling Microscopy (STM) and Ultraviolet-visible (UV-vis) Absorption
Document Type
Article
Publication Date
2010
Abstract
This study focused on visually and electrochemically characterizing tin (Sn), and platinum (Pt) nanoparticles by Scanning Tunneling Microscopy and UV-Absorption. The purpose of this study was to analyze the correlation between the distribution of nanoparticles in a given area and the amount of time spent waiting for an initial reaction to occur after adding our reducing agent sodium borohydride. Pt and Sn nanoparticles were synthesized, purified, cleaned, and deposited onto a graphite surface to characterize the surface nanostructure using STM. Samples of Pt and Sn nanoparticle solution were also analyzed using UV-vis absorption to properly depict at what point in time the metal in the solution will drop down to a ground state where no absorption would occur, signaling the completion of an initial reaction. Together STM and UV-vis absorption were used to determine the particle size distribution and its relationship to time associated with the synthesis.
Recommended Citation
Hernandez, Christian, " A Study of Pt-Sn Nanoparticles by Scanning Tunneling Microscopy (STM) and Ultraviolet-visible (UV-vis) Absorption" (2010). URC Student Scholarship.
http://scholar.oxy.edu/urc_student/36
Advisor
Adrian Hightower
Department
physics
Support
Ford Research Endowment
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