1. Chongqing Key Laboratory of Catalysis and New Environmental Materials College of Environment and Resources Chongqing Technology and Business University Chongqing 400067 P. R. China
2. College of Arts Chongqing Technology and Business University Chongqing 400067 P. R. China
3. Department of Mechanical and Construction Engineering Faculty of Engineering and Environment Northumbria University Newcastle upon Tyne NE1 8ST UK
4. Department of Materials School of Natural Sciences University of Manchester Manchester M13 9PL UK
5. School of Chemistry and Materials Chemistry Jiangsu Normal University Xuzhou Jiangsu 221116 P. R. China