1. Group of Biomimetic Smart Materials, CAS Key Laboratory of Bio-based materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences & Shandong Energy Institute, Songling Road 189, Qingdao 266101, P. R. China
2. Center of Material and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, P. R. China
3. WEEE Research Centre, Research Center of Resource Recycling Science and Engineering, Shanghai Polytechnic University, Shanghai Collaborative Innovation Centre for WEEE Recycling, Shanghai 201209, P. R. China