1. Department of Chemical and Biomolecular Engineering, University of Houston, 4226 Martin Luther King Blvd., Houston, Texas 77204, United States
2. Molecular Nanotechnology Lab, Department of Inorganic Chemistry, University of Alicante, Campus de San Vicente del Raspeig, 03690 San Vicente del Raspeig Alicante, Spain
3. Earth Systems Science Division, Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
4. Shared Equipment Authority, SIMS Laboratory, Rice University, 6100 Main Street, Houston, Texas 77005, United States
5. Albemarle Corporation, 13000 Bay Park Road, Pasadena, Texas 77507, United States