1. Group of Biomimetic Smart MaterialsQingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of Sciences Songling Road 189 Qingdao 266101 P. R. China
2. College of Chemistry and Chemical EngineeringQingdao University 308 Ningxia Road Qingdao Shandong 266071 P. R. China
3. Center of Material and Optoelectronics EngineeringUniversity of Chinese Academy of Sciences 19A Yuquan Road Beijing 100049 P. R. China
4. State Key Joint Laboratory of Environment Simulation and Pollution ControlSchool of EnvironmentTsinghua University Shuangqing Road 30 Beijing 100084 P. R. China