1. Department of Chemical and Petroleum Engineering, University of Pittsburgh , Pittsburgh, PA , United States
2. Chemical Engineering Department, Pohang University of Science and Technology (POSTECH) , Pohang, Gyeongbuk , Republic of Korea
3. Environmental TEM Catalysis Consortium (ECC), University of Pittsburgh , Pittsburgh, PA , United States
4. Center for Integrated Nanotechnologies , Sandia National Laboratories, Albuquerque, NM , United States
5. Mechanical Engineering and Materials Science Department, University of Pittsburgh , Pittsburgh, PA , United States
6. National Energy Technology Laboratory , Pittsburgh, PA , United States
7. Department of Physics and Astronomy, University of Pittsburgh , Pittsburgh, PA , United States
8. Center for Functional Nanomaterials, Brookhaven National Lab , Upton, NY , United States