1. School of Environmental and Municipal Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi Province 710055, China
2. Organic Chemistry, School of Chemical Science and Engineering, Royal Institute of Technology, 114 28 Stockholm, Sweden
3. Laboratory of Photomolecular Sciences, Department of Chemistry and Chemical Engineering, Swiss Federal Institute of Technology, Station 6, CH-1015 Lausanne, Switzerland