1. Particles and Catalysis Research Group School of Chemical Engineering The University of New South Wales Sydney NSW 2052 Australia
2. Department of Chemistry The George Washington University 800 22 nd St NW Washington DC 20052 USA
3. College of Chemical and Pharmaceutical Engineering Hebei University of Science and Technology 26 Yuxiang Road Shijiazhuang Hebei 050018 P. R. China
4. Qingdao International Academician Park Research Institute Qingdao Shandong 266000 P. R. China