1. Faculty of Energy and Electric Engineering, Qinghai University, Xining 810016, P. R. China
2. Qinghai Engineering and Technology Research Center of Comprehensive Utilization of Salt Lake Resources; Key Laboratory of Green and High-end Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, P. R. China
3. Key Laboratory of Functional Molecule Design and Interface Process, Anhui Jianzhu University, Hefei 230601, P. R. China
4. State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, P. R. China