1. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, P. R. China
2. State Key Laboratory of Bio-Fibers and Eco-Textiles & College of Textiles & Clothing, College of Physics, Qingdao University, No. 308 Ningxia Road, Qingdao 266071, P. R. China