1. School of Resources and Environmental Engineering, Shanghai Polytechnic University, Shanghai 201209, P. R. China
2. Shanghai Collaborative Innovation Centre for WEEE Recycling, Shanghai 201209, P. R. China
3. Group of Biomimetic Smart Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences & Shandong Energy Institute, Songling Road 189, Qingdao 266101, P. R. China
4. Center of Material and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, P. R. China