1. Department of Chemical and Biomolecular Engineering, Rice University, 6100 Main Street, MS-362, Houston, Texas 77005, United States
2. Shared Equipment Authority, Rice University, 6100 Main Street, Houston, Texas 77005, United States
3. Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, MS-364, Houston, Texas 77005, United States
4. Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment Rice University, 6100 Main Street, Houston, Texas 77005, United States