1. School of Chemical Sciences University of Chinese Academy of Sciences Beijing 100049 P. R. China
2. National Engineering Laboratory for VOCs Pollution Control Material & Technology Research Center for Environmental Material and Pollution Control Technology University of Chinese Academy of Sciences Beijing 100049 P. R. China
3. Institute of Materials Science University of Connecticut Storrs CT 06269 USA
4. Chemistry and Chemical Engineering of Guangdong Laboratory Shantou 515063 P. R. China