1. Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province; Yancheng Institute of Technology; Yancheng 224051 P. R. China
2. Jiangsu Collaborative Innovation Center for Ecological Building Materials and Environmental Protection Equipments; Yancheng Institute of Technology; Yancheng 224051 P. R. China
3. School of Electrical, Computer and Energy Engineering; Arizona State University; Tempe AZ 85287 USA