1. College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang, Hebei 050016, P.R. China
2. Department of Chemistry and Biochemistry, Lamar University, Beaumont, Texas 77710, United States
3. Integrated Composites Laboratory (ICL), Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, Texas 77710, United States