1. Chemistry and Biochemistry Division, Department of Integrated Engineering, National Institute of Technology, Yonago College, 4448 Hikona-cho, Yonago, Tottori 683-8502, Japan
2. College of New Energy, Zhengzhou University of Light Industry, Zhengzhou 450002, P. R. China
3. Department of Materials Science, School of Engineering Kwansei Gakuin University, Gakuen 2-1, Sanda 669-1337, Japan