1. Department of Metallurgy and Resource Engineering, Guilin University of Technology at Nanning, Nanning 530003, China
2. Innovation Center of Yangtze River Delta, Zhejiang University, Hangzhou 311400, China
3. Department of Chemistry, Government Post Graduate College, Lower Dir, Timergara 18300, Pakistan
4. College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China