CHED 248 |
| X-ray diffraction is a powerful tool for characterization on the nanoscale, yet actual student use of diffractometers is rare, especially in introductory laboratories. A hands-on powder X-ray diffraction experiment has been incorporated into general chemistry courses at Southern Illinois University Edwardsville (SIUE) in an NSF-sponsored project using a Rigaku/MSC MiniFlex+ powder X-ray diffractometer. First-year students at SIUE synthesize nanocrystalline europium-doped yttrium oxide in a combustion reaction, load samples, collect diffraction data, plot powder patterns, and analyze results. Simple instrument design, an automated sample changer, and user-friendly software allow high throughput of samples in a short period of time. Over the past two years, over 1500 general chemistry students have performed hands-on powder X-ray diffraction analysis of their own samples. Experimental details, strategies for managing multiple laboratory sections, the preparation of teaching assistants, training of students on instrument use, and results from student assessment will be presented. |
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Nanotechnology in Undergraduate Education
8:30 AM-11:55 AM, Monday, March 26, 2007 McCormick Place North -- Room N227B, Level 2, Oral
Division of Chemical Education |