This work was supported by the National Natural Science Foundation of China (grant number 11605087), China's Post-doctoral Science Fund (grant number 2017M610500), and Graduate's research projects in Environmental Protection and Safety Engineering, University of South China (grant number 2017YCCXXM15). All the support is greatly appreciated. *Corresponding author at: 28 Changsheng West Road, Hengyang, Hunan 421001, China. E-mail address: nhwftan@163.com