1. College of Chemistry and Chemical Enginerring, Shanghai University of Engineering Science, Shanghai 201620, P. R. China
2. Department of Mechanical, Aerospace & Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, Tennessee 37388, United States
3. Department of Mathematical Sciences, Zibo Normal College, Zibo Shandong 255130, P. R. China
4. Department of Mathematics, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia