1. Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
2. Sinopec Research Institute of Petroleum Processing, Beijing 100728, P. R. China
3. State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China
4. Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai
New City, Fuzhou 350207, P. R. China