1. College
of Chemistry and Molecular Engineering, Zhengzhou University, Daxue Road 75, Zhengzhou, Henan 450052, PR China
2. School
of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, Henan 450001, PR China
3. Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, Henan 450001, PR China