1. School of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Road, Hongqiao District, Tianjin 300130, P. R. China
2. College of Chemical Engineering, Hebei Normal University of Science and Technology, 360 West Section of Hebei Street, Qinhuangdao 066004, P. R. China
3. College of Materials Science and Engineering, Yanshan University, 438 West Section of Hebei Street, Qinhuangdao 066600, P. R. China