1. Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan
2. Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300, Taiwan
3. Research Center for Sustainable Energy and Nanotechnology (RCSEN) and Innovation and Development Center of Sustainable Agriculture (IDCSA), National Chung Hsing University, Taichung 402, Taiwan