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Full-Text Articles in Physical Sciences and Mathematics

Expanding The Applicability Of Raman Spectroscopy For Monitoring Photocatalytic Degradation, Franklyn Wallace Sep 2016

Expanding The Applicability Of Raman Spectroscopy For Monitoring Photocatalytic Degradation, Franklyn Wallace

Mahurin Honors College Capstone Experience/Thesis Projects

Compared to other types of wastewater pollutants, dangerous chemical compounds such as pharmaceuticals, pesticides, and herbicides are difficult to remove and consequently being detected (at least in part because detection limits have decreased) in drinking water at increasing concentrations. Photocatalytic degradation degrades harmful compounds to innocuous end products using energy from light. Although it is effective and cost-efficient, the underlying chemical mechanisms are not understood well enough to ensure that dangerous intermediate products are not formed during the degradation process. Raman spectroscopy can be used to analyze photocatalytic degradation reactions in real time, identifying intermediate products based on spectral features. …


Low-Cost Quartz Crystal Microbalance System Platform Designed For Chemical Nanoparticle, Danming Wei Jul 2016

Low-Cost Quartz Crystal Microbalance System Platform Designed For Chemical Nanoparticle, Danming Wei

Masters Theses & Specialist Projects

QCM sensor is a response to a kind of broad spectrum, high sensitivity, and simple structure, low-cost detection device, and particularly its quality as a type of gas sensor is widely used. With the successful oscillation in liquid phase, QCM sensor has been involved in the application analytical chemistry, surface chemistry, biochemistry and environmental monitoring side and many other scientific fields. With sensitive surface film as the sensitive element, AT-cut quartz crystal as energy transducer components by changes of the relationship between mass of surface film and frequency of QCM sensor transduces signals of mass or concentration into output frequency …