Primary Submission Contact
Kelsey Weber
Faculty Sponsor
Jennifer Holt
Faculty Sponsor Email Address
jennifer.holt@valpo.edu
College
Arts and Sciences
Department/Program
Department of Chemistry
Document Type
Poster Presentation
Date
Fall 10-28-2016
Abstract
Zeolites are porous, crystalline substances that have very unique atomic organizations which allow for the formation of complex channels within the crystals. Each type of zeolite has a distinct shape and structure. To better understand the properties of zeolite channels, a dye molecule known as Brooker’s merocyanine was inserted into Zeolite L. Maximum dye loading into the zeolite channels was achieved by altering different experimental variables, such as heat, solution concentration, stirring, cation exchange, and light exposure. X-ray diffraction was used to verify the synthesis of zeolites, the cation exchange process, and dye loading. UV-Vis spectroscopy was used to measure the amount of dye adsorbed by the zeolite. By using the UV-Vis absorbance values and Beer’s Law, the concentration of dye in the zeolites was determined. The results showed that an increase of heat and stirring correlated to an increase of adsorption of dye by the zeolite. Due to the light sensitivity of Brooker’s merocyanine, it was found that limiting the amount of light exposure of the dye solutions also resulted in higher dye adsorption by the zeolites. An increase of the concentration of the dye solution increased the rate of adsorption in the channels. However, exchanging the potassium ions found within the synthesized Zeolite L channels with smaller hydrogen ions did not have an affect on the adsorption of dye in the channels. Characterizing how to achieve a maximum of dye adsorption in the zeolites allows for a better understanding of how dye molecules interact within the zeolite channels.
Recommended Citation
Weber, Kelsey L.; Henning, Benjamin; Dabertin, Thomas; and Holt, Jennifer, "Spectroscopic Studies of Brooker's Merocyanine in Zeolite L" (2016). Fall Interdisciplinary Research Symposium. 26.
https://scholar.valpo.edu/fires/26
Additional Presentation Information
Wall Poster
Biographical Information about Author(s)
Kelsey Weber is a junior chemistry student who plans on attending either pharmacy or graduate school after graduation.
Ben Henning is a junior biochemistry student who plans on attending graduate school after graduation.
Tom Dabertin is a junior chemistry student with a business minor who plans on getting an MBA following graduation.