1. School of Chemical and Biological Engineering The National Creative Research Initiative Center for Intelligent Hybrids The WCU Program of Chemical Convergence for Energy & Environment, Seoul National University, Seoul 151-744, Korea
2. Nanohybrids Research Center, Korea Institute of Science and Technology, Seoul 136-791, Korea
3. Department of Chemical and Biological Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
4. HANARO Center, Korea Atomic Energy Research Institute, Daejeon 305-353, Korea