1. Department of Chemistry; National Taiwan University; Taipei 106 Taiwan
2. Current address: CSIR-Advanced Materials and Process Research Institute; Bhopal India
3. Department of Mechanical Engineering and Graduate Institute of Manufacturing Technology; National Taipei University of Technology; Taipei 106 Taiwan
4. EaStCHEM, School of Chemistry; University of St. Andrews; St. Andrews KY16 9ST UK
5. Instrumental Analysis & Research Center; Sun Yat-sen University; Guangzhou 510275 P. R. China
6. Energy & Environment Research Laboratories; Industrial Technology Research Institute; Hsinchu 300 Taiwan