1 Department of Chemistry, Rice University, Houston, Texas 77005, United States.
2 Nanosystems Engineering Research Center for Nanotechnology Enabled Water Treatment (NEWT), Rice University, Houston, Texas 77005, United States.
3 GSI Environmental, Inc., Houston, Texas 77098, United States.
4 Department of Civil and Environmental Engineering, Rice University, Houston, Texas 77005, United States.
5 Sentinel Environmental LLC, Houston, Texas 77082, United States.
6 School of Environmental Science and Engineering, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China.
7 Department of Materials Science and Nanoengineering, Rice University, Houston, Texas 77005, United States.
8 Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States.