1. Department of Chemical Engineering and SUNCAT Center for Interface Science and Catalysis, Stanford University, 443 Via Ortega, Stanford, California 94304, United States
2. Stanford Synchrotron Radiation Lightsource (SSRL), SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, 606 Menlo Park, California 94025, United States
3. Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, 1 Bethel Valley Rd, Oak Ridge, Tennessee 37830, United States
4. National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, 72 Lawrence Rd, Berkeley, California 94720, United States